535 fault, warning and safety-shutdown messages documented by the manufacturer for the YORK YK, from 39 manuals. A message in bold has a page of its own: what it means, why it appears, what to check and how the unit restarts — from the manual that documents it. The others link to their row in the manual, with the page it was taken from.
Section 2 - Installation
| Message on the display | What it means | Manual |
|---|---|---|
| Print functions enabled (03478 microboard note) | Enabling any part of Print functions disrupts BAS/SC-EQ communications. | 450.50-N1 p.33 |
| MS/TP Bus conflict | Conflict on the MS/TP Bus resulting in no communication between the chiller IPU I board and the… | 450.50-N1 p.34 |
Section 3 - Troubleshooting
| Message on the display | What it means | Manual |
|---|---|---|
| Power LED OFF | If the power source is present at the SC-EQ power terminals (J9 +12 VDC [Red wire + Black wire -]… | 450.50-N1 p.37 |
| BRX LED illuminates solid | BAS Port receive LED stays on continuously instead of blinking with data packets sent on the BAS… | 450.50-N1 p.37 |
| ETX illuminated, microboard Receive LED illuminated, no response transmitted from the microboard | No response transmitted from the microboard to the SC-EQ request for data. | 450.50-N1 p.38 |
| BS BUS LED off continuously | The SC-EQ board is not likely seeing any valid communications occurring on the BAS bus. | 450.50-N1 p.38 |
| Fault LED blinks at a 500 ms cycle Unable to Load Firmware | The SC-EQ could not load a firmware update. | 450.50-N1 p.39 |
| Fault LED blinks at a 1 second cycle Firmware Validation Failure | The SC-EQ fails to validate the firmware at intial power up or after a firmware upgrade. | 450.50-N1 p.39 |
| Fault LED ON solid Firmware Programming Required | No firmware is present. | 450.50-N1 p.39 |
Section 4 - SC-AP gateway
| Message on the display | What it means | Manual |
|---|---|---|
| No Protocol | Status displayed on the SC-EQ Data tab (viewed via the SC-AP) for the BAS or EQ port. | 450.50-N1 p.43 |
| Invalid points offline | If an E-Link is replaced by an SC-EQ, the BAS shows the points that were previously nonrelevant as… | 450.50-N1 p.45 |
| Unreliable remote setpoints | Points that are commandable show as unreliable. | 450.50-N1 p.45 |
| Auto Detected Chiller Model: NONE (No chiller model type detected) | Auto Detected Chiller Protocol is displayed as YorkTalk2 but the Auto Detected Chiller Model is… | 450.50-N1 p.46 |
| SC-EQ fails to retrieve point data | The SC-EQ continues to use the old or invalid Modbus address. The SC-EQ never times out and then… | 450.50-N1 p.46 |
Section 6 - LON ProtoNode
| Message on the display | What it means | Manual |
|---|---|---|
| ERR (SYS ERR LED) | A steady red light indicates a system error on the unit. (The LED normally lights up 15 seconds… | 450.50-N1 p.56 |
Safety controls
| Message on the display | What it means | Manual |
|---|---|---|
| Airflow reduced below minimum required flow or failure of the permanent mechanical extraction | The unit shuts down, safe mode, within 10 s. | 160.75-O1.EN.CE p.8 |
| Refrigerant detector - first threshold reached (10% of the LFL) | Triggers an alarm which alerts authorized persons to take the appropriate action. | 160.75-O1.EN.CE p.9 |
| Refrigerant detector - second threshold reached (25% of the LFL) | Triggers the emergency stop for the facility and its safety measures are implemented. | 160.75-O1.EN.CE p.9 |
| Failure of the ventilation system, refrigerant detector, or alarm system | Any failure must be indicated. | 160.75-O1.EN.CE p.8 |
| Leaving Chilled Liquid - Low Temperature Control | The chiller is shut down by this control. | 160.75-O1.EN.CE p.25 |
| Oil pressure safety cutout | Actuates and stops the system. | 160.75-O1.EN.CE p.31 |
| high oil temperature (HOT) | Unit shutting down on high oil temperature. | 160.75-O1.EN.CE p.57 |
| low oil pressure (OP) | Unit shutting down on low oil pressure. | 160.75-O1.EN.CE p.57 |
A2L refrigerant application
| Message on the display | What it means | Manual |
|---|---|---|
| Ventilation airflow failure / failure of the permanent mechanical extraction | The unit shuts down, into safe mode, within 10 s in the event that airflow is reduced below the… | 160.76-O1-EN.CE p.8 |
| Refrigerant concentration reaches 10% of the LFL (first detection threshold) | First refrigerant detection threshold. | 160.76-O1-EN.CE p.9 |
| Refrigerant concentration reaches 25% of the LFL (second detection threshold) | Second refrigerant detection threshold. | 160.76-O1-EN.CE p.9 |
Troubleshooting - Table 5: Operation analysis chart
| Message on the display | What it means | Manual |
|---|---|---|
| abnormally high discharge pressure | The temperature difference between the condensing temperature and water off condenser is higher… | 160.76-O1-EN.CE p.31 |
| abnormally low suction pressure | Insufficient charge of refrigerant. | 160.76-O1-EN.CE p.31 |
| high evaporator pressure | Pre-rotation vanes fail to open. | 160.76-O1-EN.CE p.31 |
| no oil pressure when system start button pushed | Low oil pressure displayed on control center; compressor does not start. | 160.76-O1-EN.CE p.31 |
| unusually high oil pressure develops when oil pump runs | Unusually high oil pressure is displayed when the oil pressure display key is pressed when the oil… | 160.76-O1-EN.CE p.31 |
| oil pump vibrates or is noisy | Oil pump vibrates or is extremely noisy with some oil pressure when pressing OIL PRESSURE display… | 160.76-O1-EN.CE p.31 |
| Reduced oil pump capacity | Oil pump pumping capacity. | 160.76-O1-EN.CE p.31 |
| oil pressure gradually decreases, noted by observing the daily log sheets | When the oil pump VSD frequency increases to 55 + Hz to maintain target oil pressure. | 160.76-O1-EN.CE p.31 |
| oil pressure system ceases to return an oil/refrigerant sample | Oil refrigerant return not functioning. | 160.76-O1-EN.CE p.32 |
| Oil pump fails to deliver oil pressure | No oil pressure registers when pressing OIL PRESSURE display key when oil pump runs. | 160.76-O1-EN.CE p.32 |
Motor relubrication instruction
| Message on the display | What it means | Manual |
|---|---|---|
| Re-lubrication warning message | Current YORK OptiView panels provide a warning message to re-lubricate beginning at a programmed… | 160.76-O1-EN.CE p.52 |
| Bearing temperature warning (above 65°C) | Normal operating temperature for grease lubricated bearings on YORK chillers is 40°C to 65°C. If… | 160.76-O1-EN.CE p.56 |
| Bearing RTD motor shutdown (90°C) | Bearing RTDs are normally set to shut down the motors at 90°C, although once this temperature is… | 160.76-O1-EN.CE p.54 |
Safety shutdowns and warnings
| Message on the display | What it means | Manual |
|---|---|---|
| warning message to re-lubricate | OptiView panels provide a warning message to re-lubricate beginning at a programmed number of… | 160.95-O1 p.43 |
| bearing temperature warning - 149°F (65°C) | If the temperature exceeds 149°F (65°C), a warning is issued. | 160.95-O1 p.47 |
| bearing RTD shutdown - 194°F (90°C) | Bearing RTDs are normally set to shut down the motors at 194°F (90°C), although when this… | 160.95-O1 p.44 |
| quarterly maintenance warning item | Monthly items appear on OptiView as a quarterly maintenance warning item. | 160.95-O1 p.20 |
Start inhibit messages
| Message on the display | What it means | Manual |
|---|---|---|
| Anti-recycle XX/sec | Anti-recycle setting enabled on the setup screen and the anti-recycle time has not yet elapsed;… | 160.95-O2 p.185 |
| LCSSS - High phase A, B, or C heatsink temperature - Stopped | Chiller stopped and the LCSSS trigger board detected the temperature of the phase A, B, or C (X in… | 160.95-O2 p.185 |
| Setup - Line Frequency Not Set | The line frequency programmed on the setup screen is Invalid. | 160.95-O2 p.185 |
| Setup - Line voltage not set | HYP model drives: the line voltage programmed on the setup screen is Invalid. | 160.95-O2 p.186 |
| MVSSS - High heatsink 1, 2, or 3 temperature - Stopped | Temperature sensed on the stated phase stack has exceeded 194°F (90°C) while not running. | 160.95-O2 p.186 |
| Motor controller - Initialization in progress | For Y.OPT.01.07.308 and later. OptiView is waiting for a response from the starter to initialize or… | 160.95-O2 p.186 |
| Oil - High sump pressure - Stopped | Heat pump enabled and the oil sump pressure is greater than 133.0 psig. | 160.95-O2 p.186 |
| Oil - Low Temperature Differential | Instantly set when the oil sump temperature minus the condenser saturation temperature is less than… | 160.95-O2 p.186 |
| Oil - High dilution inhibit | Only applies when oil quality protection is enabled. Oil dilution is greater than the JCI Service… | 160.95-O2 p.186 |
| Oil - Low viscosity inhibit | Only applies when oil quality protection and oil cooling control are enabled. Oil viscosity is less… | 160.95-O2 p.186 |
| Compressor - PRV not calibrated | The PRVs have not been calibrated. | 160.95-O2 p.187 |
| Compressor - PRV motor switch open | The PRVs are not fully closed. | 160.95-O2 p.187 |
Warning messages
| Message on the display | What it means | Manual |
|---|---|---|
| Warning - Auto lube grease level low | Auto lube type is P203; the motor auto lube cycle has been in progress for 30 s and OptiView… | 160.95-O2 p.188 |
| Warning - Auto lube req'd on next shutdown | Auto lube type is P203; operating hours since last motor lube is greater than or equal to the lube… | 160.95-O2 p.189 |
| Warning - Check oil system | Oil pump frequency command is greater than 50 Hz for 30 min consecutively. | 160.95-O2 p.189 |
| Warning - Compressor - Low discharge superheat limit | Compressor discharge superheat has decreased to the capacity control discharge superheat override… | 160.95-O2 p.189 |
| Warning - Condenser - Freeze threat from low pressure | Chiller not running, condenser saturation temperature less than 34°F (1.1°C) and drop leg… | 160.95-O2 p.189 |
| Warning - Condenser - High pressure limit | Condenser pressure exceeds the high pressure warning setpoint threshold. | 160.95-O2 p.189 |
| Warning - Condenser - High small temperature difference | Condenser small temperature difference is greater than the condenser small temperature difference… | 160.95-O2 p.190 |
| Warning - Condenser - Liquid level stability | After 30 min of running, a 10 min condenser liquid level minimum/maximum window starts; the… | 160.95-O2 p.190 |
| Warning - Condenser or evaporator XDCR error | After 10 min of running, the evaporator pressure transducer indicates a higher pressure than the… | 160.95-O2 p.190 |
| Warning - Condenser or VGD sensor failure | Difference between the discharge/stall pressure transducer and the condenser pressure transducer is… | 160.95-O2 p.190 |
| Warning - Conditions override VGD | An extreme stall condition detected while running: stall detector voltage exceeds twice the high… | 160.95-O2 p.191 |
| Warning - Control panel - Internal error | Software detects an error in the timing of the internal processing. Does not impact any functions;… | 160.95-O2 p.191 |
| Warning - Excess surge detected | Applies only if the surge protection shutdown is disabled and any of: hot gas disabled (SSS/EM),… | 160.95-O2 p.192 |
| Warning - External I/O - Serial communication | Microboard has not received valid communication from the optional LTC I/O board for 12 consecutive… | 160.95-O2 p.192 |
| Warning - High auxiliary condenser pressure | High temperature heat pump oil sump condenser enabled and the auxiliary condenser pressure >140.0… | 160.95-O2 p.192 |
| Warning - Harmonic filter - Data loss | Communications between the harmonic filter logic board and the compressor motor VSD logic board is… | 160.95-O2 p.192 |
| Warning - Harmonic filter - Input frequency range | Power line frequency detected by the VSD harmonic filter is outside 58 Hz to 62 Hz (default 60 Hz)… | 160.95-O2 p.193 |
| Warning - Harmonic filter - Invalid model | On power up the VSD checks that the filter model reported by the filter is correct; the reported… | 160.95-O2 p.193 |
| Warning - Harmonic filter - Not running | All of the following true for 20 s continuously: chiller running, filter enabled, filter present… | 160.95-O2 p.193 |
| Warning - Harmonic filter - Operation inhibited | A harmonic filter is present and has been inhibited on the VSD Screen. All harmonic filter data is… | 160.95-O2 p.193 |
| Warning - Liquid level setpoint not achieved | Refrigerant level is not within ±15% of the refrigerant level setpoint for 10 continuous min after… | 160.95-O2 p.193 |
| Warning - Loss of subcooler liquid seal | Chiller running greater than 30 min and the subcooler effectiveness is less than the subcooler… | 160.95-O2 p.193 |
| Warning - MMB - Serial communications | Microboard has not received valid communication from the optional motor monitoring board for 12… | 160.95-O2 p.194 |
| Warning - Motor - Auto lube failed | Auto lube type is P203; the Warning - Auto lube grease low warning is set in the first half of the… | 160.95-O2 p.194 |
| Warning - Motor - Bearing vibration baseline not set | Shaft end and opposite shaft end motor bearing vibration baseline values have not been entered on… | 160.95-O2 p.194 |
| Warning - Motor - High bearing temperature | Either of the enabled motor bearing temperatures exceeds the programmed High Bearing Temperature… | 160.95-O2 p.194 |
| Warning - Motor - High bearing vibration | Either the shaft end or opposite shaft end motor bearing vibration has exceeded the value… | 160.95-O2 p.194 |
| Warning - Motor - High winding temperature | Any of the enabled motor winding temperatures exceed the high winding temperature shutdown… | 160.95-O2 p.195 |
| Warning - Motor - Bearing lube required | Operating hours since last motor lubrication exceeds the set hours. Replaces Warning - Motor… | 160.95-O2 p.195 |
| Warning - Motor - Bearing lube suggested | Operating hours since last motor lubrication exceeds the set hours. Not displayed if the auto lube… | 160.95-O2 p.195 |
| Warning - Motor - Bearing lube not done | Auto lube type is none or P203 and the motor lube shutdown is disabled; operating hours since last… | 160.95-O2 p.196 |
| Warning - Motor - Oil change suggested | Auto lube type is sleeve and the operating hours since last motor lubrication is greater than or… | 160.95-O2 p.196 |
| Warning - Motor - Oil change required | Auto lube type is sleeve and the operating hours since last motor lubrication is greater than or… | 160.95-O2 p.196 |
| Warning - Motor - Oil change not done | Auto lube type is sleeve and the motor lube shutdown is disabled; operating hours since last motor… | 160.95-O2 p.197 |
| Warning - Oil - High supply temperature | Oil cooling control enabled; after 30 min of running, the oil supply temperature is 10°F (5.6°C)… | 160.95-O2 p.197 |
| Warning - Oil - Low supply temperature | Oil cooling control enabled; after 30 min of running, the oil supply temperature is 15°F (8.3°C)… | 160.95-O2 p.197 |
| Warning - Oil - High sump pressure | Heat pump mode enabled. Displayed when the chiller has been running less than 10 min and the oil… | 160.95-O2 p.197 |
| Warning - Quarterly service required - Contact JCI | Days since last quarterly service is equal to or greater than 90 days. | 160.95-O2 p.197 |
| Warning - Yearly service required - Contact JCI | Days since last yearly service is equal to or greater than 365 days, or operating hours since last… | 160.95-O2 p.198 |
| Warning - 3 year service required - Contact JCI | Days since last 3 year service is equal to or greater than 1,095 days. | 160.95-O2 p.198 |
| Warning - Sales order - Invalid serial number | The unit serial number is blank on the Sales Order Screen. | 160.95-O2 p.198 |
| Warning - Standby lube - Low oil pressure | A minimum of 15 psid of oil pressure was not achieved in the first 30 s of a standby lubrication… | 160.95-O2 p.198 |
| Warning - Standby lube - Inhibited | The oil pump pressure is less than 2 psig, the oil sump pressure is less than 2 psig, the Oil -… | 160.95-O2 p.198 |
| Warning - Surge protection - Excess surge limit | Applies only if the surge protection extended run feature is enabled and any of: hot gas disabled… | 160.95-O2 p.199 |
| Warning - VSD - Input voltage imbalance | Variable speed compressor motor drive is a HYP model and the input voltage imbalance is greater… | 160.95-O2 p.199 |
Cycling faults
| Message on the display | What it means | Manual |
|---|---|---|
| Condenser - Flow Switch Open | The condenser flow switch (and the heating condenser flow switch for heat recovery chillers) has… | 160.95-O2 p.200 |
| Condenser - Freeze threat - Flow switch open | The condenser flow switch has remained open for more than 1 min while the chiller is stopped, and… | 160.95-O2 p.200 |
| Control panel - Power failure | When the power failure restart is auto, this is a cycling fault: a control power failure has… | 160.95-O2 p.200 |
| Control panel - Loss of control voltage | When the power failure restart is auto, this is a cycling fault: the line power input signal at I/O… | 160.95-O2 p.201 |
| Control panel - Schedule | Schedule feature enabled; the chiller has been shut down in accordance with the schedule entered. | 160.95-O2 p.201 |
| Evaporator - Low pressure - Smart freeze | Evaporator pressure has decreased to the capacity control low pressure override with the Warning -… | 160.95-O2 p.201 |
| Isolation valves - Not closed | Isolation valves enabled on the setup screen; the isolation close output relay on LTC I/O TB16 has… | 160.95-O2 p.201 |
| Leaving Chilled Liquid - Flow Switch Open | The chilled liquid flow switch has remained open for 5 s continuously while the chiller was… | 160.95-O2 p.202 |
| Chilled liquid - Flow switch open | The chilled liquid flow switch has remained open for 5 s continuously while the chiller was… | 160.95-O2 p.202 |
| Leaving chilled liquid - Low temperature | The leaving chilled liquid temperature has decreased to the programmed shutdown temperature… | 160.95-O2 p.202 |
| Leaving condenser liquid - High temperature | The leaving condenser liquid temperature has increased to the programmed heating shutdown… | 160.95-O2 p.202 |
| Motor controller - Initialization failure | When AC power is restored after a power failure, the control center attempts to establish serial… | 160.95-O2 p.202 |
| Motor controller - Fault contacts open | The motor controller fault contacts connected to TB6-16 and TB6-53 in the OptiView Control Panel… | 160.95-O2 p.203 |
| Motor controller - Loss of current | Compressor motor current decreased to 10% FLA for 25 s continuously while running - possibly caused… | 160.95-O2 p.203 |
| Motor controller - Serial communications | Communications between the control center microboard and the starter cause no response over three… | 160.95-O2 p.203 |
| Motor - Auto lube in progress | Auto lube type is P203 and the lubrication cycle is in progress, either automatically or manually… | 160.95-O2 p.203 |
| Motor - Lack of bearing lubrication | Auto lube type is P203 and the operating hours since last motor lubrication has exceeded the… | 160.95-O2 p.203 |
| Multiunit cycling - Contacts open | The multiunit cycling contacts on the I/O board TB4-9 have opened to initiate a cycling shutdown. | 160.95-O2 p.203 |
| Oil - Low sump temperature | The oil temperature has decreased to less than or equal to 55°F (12.8°C). | 160.95-O2 p.203 |
| Oil - Variable speed pump - Drive contacts open | The oil pump VSD has shut down the chiller by opening its status contacts connected to the I/O… | 160.95-O2 p.204 |
| Power fault | EM starter applications only. After the chiller has been running for 75 s, the CM-2 board has shut… | 160.95-O2 p.204 |
| Proximity probe - Low supply voltage | The +24 VDC power supply voltage to the proximity probe has decreased to +19.0 VDC, below the… | 160.95-O2 p.204 |
| Setup - Refrigerant type not set | The refrigerant type is set to invalid on the Setup Screen. | 160.95-O2 p.204 |
| System cycling - Contacts open | The system cycling contacts on the I/O board TB4-13 have opened to initiate a cycling shutdown. | 160.95-O2 p.204 |
Liquid cooled solid state starter
| Message on the display | What it means | Manual |
|---|---|---|
| LCSSS - Serial receive | After communications were successfully established in the initialization process, the LCSSS does… | 160.95-O2 p.205 |
| LCSSS - Power fault | The LCSSS logic/trigger board detected that the compressor motor current in one or more phases has… | 160.95-O2 p.205 |
| LCSSS - Low phase A, B, or C temperature sensor | The LCSSS logic/trigger board detected that the temperature of the phase A, B, or C (X in message)… | 160.95-O2 p.205 |
| LCSSS - Run signal | The LCSSS receives two start signals from the control center simultaneously - one through the… | 160.95-O2 p.205 |
| LCSSS - Invalid current scale selection | An invalid compressor motor current scale jumper combination is installed in the LCSSS… | 160.95-O2 p.206 |
| LCSSS - Phase locked loop | The LCSSS logic/trigger board phase locked loop circuit was unable to maintain lock with phase A of… | 160.95-O2 p.206 |
| LCSSS - Low supply line voltage | The LCSSS logic/trigger board detected that the compressor motor AC power line voltage, in any… | 160.95-O2 p.206 |
| LCSSS - High supply line voltage | The LCSSS logic/trigger board detected that the compressor motor AC power line voltage, in any… | 160.95-O2 p.207 |
| LCSSS - Logic board processor | Communication between the microprocessor and digital signal processor (DSP) on the LCSSS… | 160.95-O2 p.207 |
| LCSSS - Logic board power supply | Following the application of power. | 160.95-O2 p.207 |
| LCSSS - Phase loss | The LCSSS logic/trigger board detected the line-to-line RMS voltage in any phase has decreased to… | 160.95-O2 p.207 |
Medium voltage solid state starter cycling fault messages
| Message on the display | What it means | Manual |
|---|---|---|
| MVSSS - Low supply line voltage | The starter controller board has detected that the power line voltage (L1 to L2, L2 to L3, or L3 to… | 160.95-O2 p.208 |
| MVSSS - High supply line voltage | The starter controller board has detected that the power line voltage (L1 to L2, L2 to L3, or L3 to… | 160.95-O2 p.208 |
| MVSSS - Run signal | The starter controller board receives two start signals from the control center simultaneously -… | 160.95-O2 p.208 |
| MVSSS - Power fault | One or more phases of motor current has dropped below 10% of FLA for two line cycles. This fault is… | 160.95-O2 p.208 |
| MVSSS - Phase loss | The drive controller board has detected a single phase has dropped more than 30% below the rated… | 160.95-O2 p.209 |
| MVSSS - Logic board power supply | Generated by the starter controller board when it detects that the control power has dropped below… | 160.95-O2 p.209 |
| MVSSS - Serial receive | Set if the starter controller board has lost Modbus communications from OptiView for more than 60 s. | 160.95-O2 p.209 |
Medium voltage variable speed drive cycling fault messages
| Message on the display | What it means | Manual |
|---|---|---|
| VSD - High instantaneous current | Two of the three output lines (T1 and T3) to the motor are continuously monitored by two DC current… | 160.95-O2 p.210 |
| VSD - Initialization failed | When a run signal is received from the control panel, the drive performs an operational check of… | 160.95-O2 p.211 |
| VSD - DC bus voltage imbalance - XY | X denotes the power cell phase location (A, B, or C) and Y the location of the cell within that… | 160.95-O2 p.211 |
| VSD - Precharge - DC bus voltage imbalance - XY | X denotes the power cell phase location (A, B, or C) and Y the location of the cell within that… | 160.95-O2 p.211 |
| VSD - Precharge - Low DC bus voltage | During precharge, all DC bus voltages are compared to a threshold of 330 VDC (20% of 1,650 VDC) 0.5… | 160.95-O2 p.211 |
| VSD - Gate driver - XYZ | X denotes the power cell phase location (A, B, or C), Y the location of the IGBT in the pole in… | 160.95-O2 p.212 |
| VSD - Run signal | Redundant run signals are generated by the OptiView Control Center - one through the start relay on… | 160.95-O2 p.212 |
| VSD - Input power supply | The 120 VAC control supply feeding the various DC power supplies powering the MVVSD controls… | 160.95-O2 p.212 |
| VSD - High DC bus voltage - XY | X denotes the power cell phase location (A, B, or C) and Y the location of the cell within that… | 160.95-O2 p.212 |
| VSD - Low DC bus voltage | All DC bus voltages are continuously monitored; one of the voltages dropped below a threshold level… | 160.95-O2 p.212 |
| VSD - Loss of cooling fan | Any of the fan motor supply voltage is below the minimum threshold, or the manual fan motor starter… | 160.95-O2 p.212 |
| VSD - Single phase input power | The drive monitors each of the three phase line-to-line voltages; the RMS voltage of any of the… | 160.95-O2 p.213 |
Variable speed compressor drive cycling fault messages
| Message on the display | What it means | Manual |
|---|---|---|
| VSD - 105% motor current overload | HYP model drives only. The VSD logic board detects that at least one of the three output phase… | 160.95-O2 p.214 |
| VSD - High Phase A, B, or C input current | HYP model drives. The stated phase input current exceeds 2,796 A. | 160.95-O2 p.214 |
| VSD - High Phase A, B, or C motor current | HYP model drives. The stated phase motor current exceeds 2,164 A. | 160.95-O2 p.215 |
| VSD - High phase A, B, C instantaneous current | TM, VSD, and LVSD model drives. The motor current on that phase exceeds the given limit, sensed by… | 160.95-O2 p.215 |
| VSD - Phase A, B, C gate driver | TM, VSD, and LVSD model drives. Second level of current protection on the VSD driver boards: the… | 160.95-O2 p.215 |
| VSD - Phase A, B, C motor gate driver | HYP model drives. One of the motor gate driver power supplies is operating outside of tolerance, or… | 160.95-O2 p.216 |
| VSD - Phase A, B, C input gate driver | HYP model drives. One of the input gate driver power supplies is operating outside of tolerance, or… | 160.95-O2 p.216 |
| VSD - High DC bus voltage | All model drives. The VSD DC bus voltage is continuously monitored and exceeded the limit.… | 160.95-O2 p.216 |
| VSD - Logic board power supply | All model drives. The low voltage power supplies for the logic boards have dropped below their… | 160.95-O2 p.217 |
| VSD - DC bus voltage imbalance | TM, VSD, and LVSD models. The 1/2 bus voltage is not within ±88 VDC for 400-460 VAC line or ±106… | 160.95-O2 p.217 |
| VSD - DC bus pre-regulation | All model drives. The DC bus voltage has not increased to a value of ±50 V of the DC bus voltage… | 160.95-O2 p.217 |
| VSD - Precharge - DC bus voltage imbalance | All model drives. Same condition as the VSD DC bus voltage imbalance message, except the condition… | 160.95-O2 p.218 |
| VSD - High internal ambient temperature | All model drives. The drive ambient temperature, monitored by a sensor on the drive logic board,… | 160.95-O2 p.218 |
| VSD - Invalid current scale selection | The part number of the VSD logic board is the same on all horsepower sizes; the position of the… | 160.95-O2 p.218 |
| VSD - Invalid setpoints | HYP model drives. The VSD logic board determines which model of drive can run which model of motor;… | 160.95-O2 p.218 |
| VSD - Phase A, B, or C input DCCT offset | HYP model drives. Before the VSD enters the precharge state, the DCCT output is measured to verify… | 160.95-O2 p.218 |
| VSD - Line voltage phase rotation | HYP model drives. Internally to the drive the rotation must remain the same; the output of the line… | 160.95-O2 p.219 |
| VSD - Low phase A, B, C inverter heatsink temperature | TM model drives. A heatsink temperature sensor indicates a temperature less than 37°F (2.8°C); in… | 160.95-O2 p.219 |
| VSD - Low converter heatsink temperature | TM, VSD, and LVSD model drives. A thermistor sensor located on the SCR/diode block side of the… | 160.95-O2 p.219 |
| VSD - Low phase A, B, C input baseplate temperature | HYP model drives. The input/rectifier modules temperature drops below 37°F (2.8°C). | 160.95-O2 p.219 |
| VSD - Low inverter baseplate temperature | Single pole VSD and LVSD model drives. A thermistor sensor located inside the transistor modules on… | 160.95-O2 p.219 |
| VSD - Low phase A, B, or C inverter baseplate temperature | 3-pole VSD and LVSD model drives. A thermistor sensor located inside the transistor modules on the… | 160.95-O2 p.219 |
| VSD - Low phase A, B, or C motor baseplate temperature | HYP model drives. The motor or inverter modules temperature drops below 37°F (2.8°C). | 160.95-O2 p.220 |
| VSD - Phase locked loop | HYP model drives. The drive automatically determines the input voltage frequency via the line… | 160.95-O2 p.220 |
| VSD - Precharge - Low DC bus voltage 1 | All model drives. During precharge, the DC bus voltage must reach at least the low threshold… | 160.95-O2 p.220 |
| VSD - Precharge - Low DC bus voltage 2 | All model drives. Near the end of precharge, the DC link voltage must reach at least the high… | 160.95-O2 p.220 |
| VSD - Logic board processor | All model drives. A communication problem occurs between the two microprocessors on the drive logic… | 160.95-O2 p.221 |
| VSD - Not running | All model drives. OptiView-generated: the VSD logic board communicates that it has received the run… | 160.95-O2 p.221 |
| VSD - Serial receive | Generated by the VSD logic board when communications between the microboard and the drive logic… | 160.95-O2 p.221 |
| Harmonic filter - High DC bus voltage | TM and VSD model drives. The harmonic filter logic board continuously monitors the filter DC link… | 160.95-O2 p.221 |
| Harmonic filter - High phase A, B, or C current | TM and VSD model drives. The maximum instantaneous harmonic filter current, monitored using two… | 160.95-O2 p.222 |
| Harmonic filter - Phase locked loop | TM and VSD model drives. The phase locked loop circuit on the filter logic board has lost… | 160.95-O2 p.222 |
| Harmonic filter - Precharge - Low DC bus voltage 1 | During filter precharge, the filter DC bus voltage must reach at least the high threshold… | 160.95-O2 p.222 |
| Harmonic filter - Precharge - Low DC bus voltage 2 | Near the end of filter precharge, the filter DC bus voltage must reach at least the high threshold… | 160.95-O2 p.223 |
| Harmonic filter - Low DC bus voltage | TM and VSD model drives. The filter generates its own boosted DC bus voltage (higher than… | 160.95-O2 p.223 |
| Harmonic filter - DC bus voltage imbalance | TM and VSD model drives. The DC bus uses series-connected capacitor sets that must share… | 160.95-O2 p.223 |
| Harmonic filter - Input current overload | TM and VSD model drives. One of the three phases of RMS filter current continuously exceeds the… | 160.95-O2 p.223 |
| Harmonic filter - Logic board power supply | TM and VSD model drives. The low voltage power supplies on the filter logic board have decreased… | 160.95-O2 p.224 |
| Harmonic filter - Run signal | TM and VSD model drives. When a digital run command is received at the filter logic board from the… | 160.95-O2 p.224 |
| Harmonic filter - DC current transformer 1 or 2 | TM and VSD model drives. During initialization, with no current flowing through the DCCTs, the DCCT… | 160.95-O2 p.224 |
Safety fault messages
| Message on the display | What it means | Manual |
|---|---|---|
| Auxiliary safety - Contacts closed | The auxiliary safety shutdown contacts, connected to I/O board TB4-31, have closed, initiating a… | 160.95-O2 p.225 |
| Evaporator - Transducer or leaving liquid probe | Possible defective evaporator pressure transducer or LCHLT thermistor: the converted evaporator… | 160.95-O2 p.226 |
| Evaporator - Transducer or temperature sensor | Possible defective evaporator pressure transducer or refrigerant temperature sensor: the difference… | 160.95-O2 p.227 |
| Compressor - Low discharge superheat | The discharge superheat has decreased to less than 1.0°F (0.5°C) for 5 min after the chiller has… | 160.95-O2 p.227 |
| Condenser - High pressure contacts open | The contacts of the electromechanical high pressure safety switch have opened, causing the input to… | 160.95-O2 p.227 |
| Condenser - High pressure | The condenser pressure, as sensed by the condenser transducer, has increased to more than 180.0… | 160.95-O2 p.228 |
| Condenser - High Pressure - Stopped | The condenser pressure exceeded 160.0 psig while the chiller was stopped. High temperature… | 160.95-O2 p.228 |
| Condenser - Pressure transducer out of range | The condenser pressure transducer indicates a pressure less than 0.0 psig or more than 300.0 psig -… | 160.95-O2 p.228 |
| Discharge - High temperature | The discharge temperature, as sensed by the discharge temperature thermistor, has increased to… | 160.95-O2 p.228 |
| Discharge - Low temperature | The discharge temperature, as sensed by the discharge temperature thermistor, has decreased to less… | 160.95-O2 p.228 |
| Internal error - No timer handles available | Set in the unlikely event that the operating system reports an error in providing a requested timer… | 160.95-O2 p.228 |
| Isolation valves - Not opened | Isolation valves enabled on the setup screen; the isolation open output relay on LTC I/O TB17 has… | 160.95-O2 p.229 |
| Oil - High viscosity | Only applies when oil quality protection and oil cooling control are enabled. After 30 min of… | 160.95-O2 p.229 |
| Oil - Low viscosity | Only applies when oil quality protection and oil cooling control are enabled. Either: after 10 min… | 160.95-O2 p.229 |
| Oil - High dilution | Only applies when oil quality protection is enabled. After 10 min of running, the oil dilution is… | 160.95-O2 p.229 |
| Oil - High sump temperature | The oil temperature, as sensed by the oil temperature thermistor, has increased to greater than… | 160.95-O2 p.229 |
| Oil - High sump pressure | Heat pump mode enabled. Displayed when the chiller has been running less than 10 min and the oil… | 160.95-O2 p.230 |
| Oil - High supply temperature | Oil cooling control enabled; after 5 min of running, the oil supply temperature, as sensed by the… | 160.95-O2 p.230 |
| Oil - Low supply temperature | Oil cooling control enabled; after 5 min of running, the oil supply temperature, as sensed by the… | 160.95-O2 p.230 |
| Oil - Low differential pressure | The differential oil pressure (sump oil pressure transducer output minus pump oil pressure… | 160.95-O2 p.230 |
| Oil - High differential pressure | The differential oil pressure (sump oil pressure transducer output minus pump oil pressure… | 160.95-O2 p.230 |
| Oil - Pump pressure transducer out of range | The pump oil pressure transducer (system high pressure) indicates a pressure less than 0.0 psig or… | 160.95-O2 p.231 |
| Oil - Sump pressure transducer out of range | The sump oil pressure transducer (system low pressure) indicates a pressure outside the normal… | 160.95-O2 p.231 |
| Oil - Differential pressure calibration | The sump and pump oil pressure transducers indicated a differential oil pressure of greater than… | 160.95-O2 p.231 |
| Oil - Variable speed pump - Setpoint not achieved | Occurred while in system prelube, system run, or system coastdown: the differential oil pressure is… | 160.95-O2 p.231 |
| Oil - Variable speed pump - High rate of change | After the chiller has been running for 90 s, the current oil pump frequency compared with previous… | 160.95-O2 p.231 |
| Motor or starter - Current imbalance | The 3-phase compressor motor current imbalance was greater than 30% continuously for 45 s. Not… | 160.95-O2 p.232 |
| Motor - Current >15% FLA | Instantly set when the chiller is not running and a motor current of greater than 15% FLA is… | 160.95-O2 p.232 |
| Motor - Lack of bearing oil change | Auto lube type is sleeve and the operating hours since last motor lubrication is greater than or… | 160.95-O2 p.233 |
| Motor - High winding temperature | Either any of the enabled motor winding temperatures exceeded the programmed high winding… | 160.95-O2 p.233 |
| Motor - High bearing temperature | Either of the enabled motor bearing temperatures exceeds the programmed high bearing temperature… | 160.95-O2 p.233 |
| Motor - High bearing vibration | Either the shaft end or opposite shaft end motor bearing vibration has exceeded the value… | 160.95-O2 p.233 |
| Motor - Cooling coil leak | The motor cooling coil leak detector has registered a fault condition for at least 3 s… | 160.95-O2 p.234 |
| Safety stop | The panel safety stop hardware push button was pressed, removing input from the I/O board terminal… | 160.95-O2 p.234 |
| Sales order - Invalid compressor model | The compressor code in positions 7 and 8 of the model number on the Sales Order Screen is invalid. | 160.95-O2 p.234 |
| Sales order - Invalid gear code | The gear code entered on the Sales Order Screen does not match the particular compressor code from… | 160.95-O2 p.234 |
| Surge protection - Excess surge | Applies only if the surge protection shutdown feature is enabled and any of: hot gas disabled… | 160.95-O2 p.235 |
| Thrust bearing - Proximity probe uncalibrated | The high speed thrust bearing proximity reference position has not been calibrated. Only applies to… | 160.95-O2 p.235 |
| Thrust bearing - Proximity probe clearance | The clearance between the compressor high speed thrust collar and the tip of the proximity probe… | 160.95-O2 p.235 |
| Thrust bearing - Proximity probe out of range | The clearance between the compressor high speed thrust collar and the tip of the proximity probe… | 160.95-O2 p.236 |
| Thrust bearing - Limit switch open | The high speed thrust bearing limit switch contacts, connected to TB3-81, have opened - the bearing… | 160.95-O2 p.236 |
| Watchdog - Software reboot | The microboard software watchdog initiated a microprocessor reset because it detected that a… | 160.95-O2 p.237 |
Liquid cooled solid states starter safety fault messages
| Message on the display | What it means | Manual |
|---|---|---|
| LCSSS - 105% motor current overload | The highest phase of the compressor motor current increased to greater than 105% of the programmed… | 160.95-O2 p.238 |
| LCSSS - High instantaneous current | The LCSSS logic/trigger board detected that the compressor motor current in any phase exceeded 1.15… | 160.95-O2 p.238 |
| LCSSS - High phase A, B, or C heatsink temperature | The LCSSS logic/trigger board detected that the temperature of the phase A, B, or C SCR modules has… | 160.95-O2 p.238 |
| LCSSS - Motor or starter - Current imbalance | Set by the LCSSS trigger/logic board; the calculation is the same as the OptiView uses. | 160.95-O2 p.238 |
| LCSSS - Phase A, B, or C shorted SCR | A shorted SCR in phase A, B, or C has been detected by the LCSS logic/trigger board; the voltage… | 160.95-O2 p.238 |
| LCSSS - OPEN SCR | An open SCR in phase A, B, or C has been detected by the LCSSS logic/trigger board; the open… | 160.95-O2 p.239 |
| LCSSS - Phase rotation | The LCSSS logic/trigger board has detected the three phase compressor motor power line voltage… | 160.95-O2 p.239 |
Medium voltage solid state starter safety fault messages
| Message on the display | What it means | Manual |
|---|---|---|
| MVSSS - Failed SCR | The starter has detected an open or shorted SCR. | 160.95-O2 p.240 |
| MVSSS - High instantaneous current | The starter controller board detected that the motor current in any phase exceeded the maximum… | 160.95-O2 p.240 |
| MVSSS - 105% motor current overload | The highest phase of the compressor motor current increased to greater than 105% of the programmed… | 160.95-O2 p.240 |
| MVSSS - Motor or starter current imbalance | A current imbalance greater than 30% difference between phases has been detected for 45 s… | 160.95-O2 p.241 |
| MVSSS - Disconnect fault | The disconnect feedback indicates the switch has opened while running. | 160.95-O2 p.241 |
| MVSSS - Control board fault | The control board in the medium voltage solid state starter has detected a hardware or software… | 160.95-O2 p.241 |
| MVSSS - Ground fault | The ground fault current as detected by the starter has exceeded 50% FLA for 3 s. | 160.95-O2 p.241 |
| MVSSS - Contactor fault | The auxiliary hardwired contacts do not match the contactor status. | 160.95-O2 p.241 |
| MVSSS - Phase rotation | The starter controller board has sensed the three phase power line voltage phase rotation is not… | 160.95-O2 p.241 |
| MVSSS - High Heatsink 1, 2, or 3 temperature | The temperature sensed on the stated phase stack has exceeded 194°F (90°C) while running. | 160.95-O2 p.241 |
Medium voltage variable speed drive safety fault messages
| Message on the display | What it means | Manual |
|---|---|---|
| VSD - High phase A, B, or C inverter baseplate temperature | The stated phase heatsink temperature exceeds 175°F (79.4°C). | 160.95-O2 p.242 |
| VSD - Main control board fault | The drive controller board has detected a hardware or software problem. | 160.95-O2 p.242 |
| VSD - Power transformer high temperature | Any one of the three input power transformer temperature sensors exceeds 392°F (200°C) (Hammond… | 160.95-O2 p.243 |
| VSD - High output frequency | The drive detects the output voltage frequency has exceeded 65 Hz for 60 Hz units or 55 Hz for 50… | 160.95-O2 p.243 |
| MVVSD - Interlock fault | The drive has detected that one of the cabinet door interlocks or microswitches is open, indicating… | 160.95-O2 p.243 |
| MVVSD - Ground fault | During startup and while running, the drive monitors the peak value of the current conducted… | 160.95-O2 p.243 |
| VSD - 105% Motor overload current | The average of the three phase currents exceeds 1.05 times the 100% job FLA limit. | 160.95-O2 p.243 |
| MVVSD - Contactor fault | The auxiliary contact for the input contactor is not in the correct state (precharge contactor open… | 160.95-O2 p.243 |
Variable speed compressor drive safety fault messages
| Message on the display | What it means | Manual |
|---|---|---|
| VSD - DC bus lockout - Do not cycle power | HYP model drives. When the unit is stopped in a mode where no command exists to energize the DC… | 160.95-O2 p.245 |
| VSD - DC bus pre-regulation lockout | HYP model drives. The unit fails to complete pre-regulation due to the VSD - DC bus pre-regulation… | 160.95-O2 p.245 |
| VSD - Frequency > 0 Hz | Set when the chiller is shutdown and a compressor motor VSD output frequency greater than 0 Hz is… | 160.95-O2 p.245 |
| VSD - Ground fault | HYP model drives. The sum of the three phases of instantaneous input current values is greater than… | 160.95-O2 p.245 |
| VSD - High phase A, B, or C inverter heatsink temperature | TM model drives. The heatsink temperature exceeds 158°F (70°C) on any of the output pole assemblies. | 160.95-O2 p.246 |
| VSD - High converter heatsink temperature | TM, VSD, and LVSD model drives. The heatsink temperature exceeds 170°F (76.7°C), or 150°F (65.6°C)… | 160.95-O2 p.246 |
| VSD - High input current TDD | HYP model drives. The 3-phase input current TDD is monitored while the chiller is running; the… | 160.95-O2 p.246 |
| VSD - High phase A, B, or C input baseplate temperature | HYP model drives. The input/rectifier IGBT module temperatures are continuously monitored by the… | 160.95-O2 p.247 |
| VSD - High total demand distortion | HYP model drives. OptiView-generated shutdown when the highest phase of TDD is greater than or… | 160.95-O2 p.248 |
| VSD - High phase A, B, or C instantaneous current | TM, VSD, and LVSD model drives. Becomes a safety fault when the cycling fault has occurred three… | 160.95-O2 p.248 |
| VSD - Inverter program fault | HYP model drives. The drive is used on two different motor designs; the inverter software must be… | 160.95-O2 p.248 |
| VSD - Input DCCT offset lockout | HYP model drives. The drive contains three DCCTs to measure the input current; the Input DCCT… | 160.95-O2 p.248 |
| VSD - Input current overload | HYP model drives. The input current overload value is 1.16 times the input job FLA value (not to… | 160.95-O2 p.249 |
| VSD - Logic board plug | HYP model drives. A jumper is connected across the connector where the input and output currents… | 160.95-O2 p.249 |
| VSD - Logic board hardware | HYP model drives. After power is applied, the VSD logic board performs several internal tests to… | 160.95-O2 p.249 |
| VSD - Low frequency detected | All model drives. After a 20 s bypass after entering system run, the VSD frequency decreases 1 Hz… | 160.95-O2 p.249 |
| VSD - Motor current imbalance | All model drives. Generated by the drive logic board; becomes active when the highest of the three… | 160.95-O2 p.250 |
| VSD - Motor current THD fault | HYP model drives. Protects the compressor motor from overheating due to current harmonics produced… | 160.95-O2 p.250 |
| VSD - Phase A, B, or C motor DCCT | HYP model drives. Determines if the cable at the motor DCCT is connected; generated 1.5 s after the… | 160.95-O2 p.250 |
| VSD - Phase A, B, or C input DCCT | HYP model drives. Determines if the cable at the input DCCT is connected; the input current in each… | 160.95-O2 p.250 |
| VSD - Precharge lockout | All model drives. The VSD fails to make precharge; the precharge relay drops out for 10 s (fans and… | 160.95-O2 p.250 |
| VSD - Rectifier program fault | HYP model drives. After power is applied, the drive logic board verifies that the two software… | 160.95-O2 p.251 |
| Harmonic filter - High heatsink temperature | TM model drives. The temperature on any filter heatsink exceeds 167°F (75°C). | 160.95-O2 p.251 |
| Harmonic filter - High baseplate temperature | VSD and LVSD model drives. The baseplate temperature exceeds the trip temperature. | 160.95-O2 p.251 |
| Harmonic filter - High total demand distortion | TM, VSD, and LVSD model drives. OptiView shutdown indicating the filter is not operating correctly… | 160.95-O2 p.251 |
Safety shutdowns
| Message on the display | What it means | Manual |
|---|---|---|
| LCSSS - HIGH PHASE X HEATSINK TEMPERATURE - RUNNING (X = A, B or C) | Any one of the three SCR heatsink temperature sensors exceeds the 212°F shutdown threshold during a… | 160.00-O2 p.21 |
| LCSSS - MOTOR OR STARTER-CURRENT IMBALANCE | Active after the starter has been running 45 seconds and the highest of the three motor currents… | 160.00-O2 p.22 |
| LCSSS - PHASE X SHORTED SCR (X = A, B or C) | Active any time the starter is not running. Opto-coupler output low (SCR turned on or shorted) for… | 160.00-O2 p.23 |
| MOTOR - PHASE ROTATION | YR chiller fault - this is not a fault of the LCSSS. The motor is turning in the wrong direction. | 160.00-O2 p.23 |
Cycling shutdowns
| Message on the display | What it means | Manual |
|---|---|---|
| LCSSS INITIALIZATION FAILED | After power is applied to the OptiView™ control center, the Micro Board fails to get a response… | 160.00-O2 p.25 |
| LCSSS - LOW PHASE X TEMPERATURE SENSOR (X = A, B or C) | Any one of the three thermistors mounted on the SCR assemblies reads a value corresponding to 37°F… | 160.00-O2 p.26 |
| LCSSS - SERIAL COMMUNICATIONS | Becomes active after successful completion of initialization: the Micro Board has tried to… | 160.00-O2 p.28 |
| LCSSS - STOP CONTACTS OPEN | The K1 relay contacts open and no fault is detected in the serial communications link. | 160.00-O2 p.29 |
Start inhibit
| Message on the display | What it means | Manual |
|---|---|---|
| LCSSS - HIGH PHASE X HEATSINK TEMPERATURE - STOPPED (X = A, B or C) | Any SCR heatsink temperature above the 110°F Start Inhibit threshold while the starter is not… | 160.00-O2 p.21 |
Warning Messages
| Message on the display | What it means | Manual |
|---|---|---|
| WARNING: COND OR EVAP TRANSDUCER ERROR | Probable condenser or evaporator pressure transducer problem - transducer output unreasonable. | 160.52-O1 p.24 |
| WARNING - REFRIGERANT LEVEL OUT OF RANGE | Condenser refrigerant level has gone out of range (level 100%, sensor output greater than 4.4 VDC). | 160.52-O1 p.24 |
System Shutdown Messages
| Message on the display | What it means | Manual |
|---|---|---|
| MON 10:00 AM - LOW WATER TEMP - AUTOSTART | Cycling shutdown - leaving chilled water temperature fell 4°F (2.2°C) below the chilled liquid… | 160.52-O1 p.25 |
| FLOW SWITCH - AUTOSTART | Cycling shutdown - chilled liquid flow switch open. | 160.52-O1 p.25 |
| SYSTEM CYCLING - AUTOSTART | Cycling shutdown - remote cycling command received. | 160.52-O1 p.25 |
| MULTI UNIT CYCLING - AUTOSTART | Cycling shutdown - lead/lag sequence control. | 160.52-O1 p.25 |
| POWER FAILURE - AUTOSTART | Cycling shutdown - utility power interruption, auto-restart configuration. | 160.52-O1 p.25 |
| POWER FAILURE | Cycling shutdown - utility power interruption, manual-restart configuration. | 160.52-O1 p.25 |
| AC UNDERVOLTAGE - AUTOSTART | Cycling shutdown - compressor proved not running while Control Center in RUN mode (AC undervoltage… | 160.52-O1 p.25 |
| INTERNAL CLOCK - AUTOSTART | Cycling shutdown - daily schedule stop time reached. | 160.52-O1 p.26 |
| REMOTE STOP | Cycling shutdown - remote stop command. | 160.52-O1 p.26 |
| LOW EVAP PRESSURE | Safety shutdown - low evaporator pressure. | 160.52-O1 p.26 |
| LOW EVAP PRESSURE - BRINE | Safety shutdown - external brine low evaporator pressure safety tripped. | 160.52-O1 p.26 |
| OIL PUMP DRIVE - AUTOSTART | Shutdown - oil pump variable speed drive protection tripped. | 160.52-O1 p.26 |
| LOW OIL PRESSURE | Safety shutdown - low differential oil pressure. | 160.52-O1 p.26 |
| HIGH OIL FLOW | Shutdown - oil pressure outside expected band (high oil flow condition). | 160.52-O1 p.27 |
| HIGH PRESSURE | Safety shutdown - high condenser pressure. | 160.52-O1 p.26 |
| EVAP TRANS OR PROBE ERROR | Safety shutdown - evaporator transducer/probe plausibility check failed. | 160.52-O1 p.26 |
| MOTOR CONTROLLER - EXT. RESET | Safety shutdown - starter / drive initiated shutdown requiring external reset. | 160.52-O1 p.27 |
| POWER FAULT - AUTOSTART | Cycling shutdown - motor controller power fault. | 160.52-O1 p.27 |
| HIGH DISCHARGE TEMP | Safety shutdown - high discharge temperature. | 160.52-O1 p.27 |
| HIGH OIL TEMP | Safety shutdown - high oil temperature. | 160.52-O1 p.27 |
| HIGH OIL PRESSURE | Safety shutdown - high differential oil pressure. | 160.52-O1 p.27 |
| FAULTY COND PRESSURE XDCR | Safety shutdown - condenser pressure transducer out of range. | 160.52-O1 p.27 |
| FAULTY OIL PRESSURE XDCR | Safety shutdown - oil pressure transducer out of range. | 160.52-O1 p.27 |
| VANE MOTOR SWITCH OPEN | Safety shutdown - prerotation vanes not fully closed at start. | 160.52-O1 p.27 |
| STARTER MALFUNCTION DETECTED | Safety shutdown - motor current detected while compressor-start signal de-energized. | 160.52-O1 p.27 |
| LOW OIL TEMP DIFF - AUTOSTART | Cycling shutdown - insufficient oil-to-condenser saturation temperature difference. | 160.52-O1 p.29 |
| DAY - TIME - OIL PRESSURE XDCR ERROR | Shutdown - oil pressure transducer auto-zero check failed. | 160.52-O1 p.29 |
| FAULTY DISCHARGE TEMP SENSOR | Safety shutdown - discharge temperature sensor fault. | 160.52-O1 p.29 |
| PROX SENSOR SAFETY SHUTDOWN | Safety shutdown - high speed thrust collar axial position out of range. | 160.52-O1 p.29 |
| DAY - TIME - FAULTY PROXIMITY PROBE | Safety shutdown - proximity probe fault (possible compressor damage). | 160.52-O1 p.29 |
| HIGH SPEED DRAIN TEMP | Safety shutdown - high speed drain line temperature. | 160.52-O1 p.29 |
| OPEN DRAIN TEMP THERMOCOUPLE | Safety shutdown - open thermocouple / wiring fault in high speed drain temperature circuit. | 160.52-O1 p.30 |
| DC UNDERVOLTAGE | Safety shutdown - low +24 VDC supply to the Proximity/Temperature Sensor module. | 160.52-O1 p.30 |
| AUX SAFETY SHUTDOWN | Safety shutdown - user-defined auxiliary safety input. | 160.52-O1 p.30 |
| REPLACE RTC U16 - REPROGRAM SETPOINTS | Alarm - real-time clock battery defective. | 160.52-O1 p.30 |
| MON 10:00 AM LOW LINE VOLTAGE | Cycling shutdown - AC line voltage below undervoltage threshold (Solid State Starter applications). | 160.52-O1 p.11 |
| MON 10:00AM HIGH LINE VOLTAGE | Cycling shutdown - AC line voltage above overvoltage threshold (Solid State Starter applications). | 160.52-O1 p.11 |
| Program Initiated Reset | Cycling shutdown - watchdog timer reset of the software program (shutdown cause listed in Table 1). | 160.52-O1 p.47 |
| MTR Phase Current Unbalance (SSS Units only) | Safety shutdown - motor phase current unbalance (Solid State Starter applications; shutdown cause… | 160.52-O1 p.47 |
Table 1 - Operation analysis chart
| Message on the display | What it means | Manual |
|---|---|---|
| No oil pressure when the SYSTEM START button is pressed | Low oil pressure displayed on control center; compressor does not start. | 160.54-O2 p.23 |
| Unusually high oil pressure develops when the oil pump runs | Unusually high oil pressure is displayed when the oil pressure display key is pressed when the oil… | 160.54-O2 p.24 |
| Oil pump vibrates or is too noisy | Oil pump vibrates or is extremely noisy with some oil pressure when pressing OIL PRESSURE display… | 160.54-O2 p.24 |
| Oil pressure gradually decreases (Noted by Observation of Daily Log Sheets) | When oil pump VSD frequency increases to 55 + hz to maintain target oil pressure. | 160.54-O2 p.24 |
| Oil pressure system ceases to return an oil or refrigerant sample | Oil refrigerant return not functioning. | 160.54-O2 p.24 |
Safety controls and panel warnings
| Message on the display | What it means | Manual |
|---|---|---|
| Oil heater thermostat (1HTR) | Protective thermostat, set to open at 180°F (82°C) to prevent overheating of the oil in the event… | 160.76-O1 p.15 |
| Bearing temperature warning | Warning issued when bearing temperature exceeds 65°C (normal operating temperature for grease… | 160.76-O1 p.44 |
| Bearing RTD shutdown | Bearing RTDs are normally set to shut down the motors at 90°C (194°F); once this temperature is… | 160.76-O1 p.42 |
VSD DISPLAY MESSAGES
| Message on the display | What it means | Manual |
|---|---|---|
| VSD SHUTDOWN - REQUESTING FAULT DATA | This shutdown is initiated when the #53 to #16 circuit has been interrupted, and the control panel… | 160.00-O1 p.17 |
| INVERTER INITIATED STOP FAULT | Displayed if the #53 to #16 circuit opens without receiving an accompanying cause for the trip over… | 160.00-O1 p.17 |
| START SEQUENCE INHIBITED BY VSD | Shutdown occurring if a VSD fault takes place during the "Start Sequence Initiated" period; the… | 160.00-O1 p.17 |
| PHASE A (OR B,C) OVERCURRENT FAULT | Shutdown generated by the VSD if the motor current exceeds a given limit. Maximum instantaneous… | 160.00-O1 p.17 |
| PHASE A (B,C) GATE DRIVER FLT | A second level of current protection exists on the VSD driver boards themselves; the entire VSD… | 160.00-O1 p.17 |
| SINGLE PHASE POWER SUPPLY | Shutdown generated by the SCR Trigger control and relayed to the VSD logic board to initiate a… | 160.00-O1 p.17 |
| HIGH PHASE A (B,C) HEATSINK TEMP | This shutdown will occur if the heatsink temperature exceeds 158°F on any of the output pole… | 160.00-O1 p.17 |
| HIGH CONVERTER HEATSINK TEMP | Converter heatsink overtemperature shutdown - reference "High Phase A (B,C) Heatsink Temp" above. | 160.00-O1 p.18 |
| 105% MOTOR CURRENT OVERLOAD | Generated by the VSD logic board; indicates that a motor overload has occurred - at least one of… | 160.00-O1 p.18 |
| BUS OVER-VOLTAGE FAULT | The VSD's DC link voltage exceeded 745 VDC, initiating a Bus Over-Voltage shutdown. | 160.00-O1 p.18 |
| MAIN BOARD POWER SUPPLY | Indicates that the low voltage power supplies for the logic boards have dropped below their… | 160.00-O1 p.18 |
| LOW DC BUS VOLTAGE FLT | The DC link dropped below 500 VDC (or 414 VDC for 50 HZ); the drive initiates a system shutdown. | 160.00-O1 p.18 |
| BUS VOLTAGE IMBALANCE FAULT | The DC link voltage is not shared equally - the center point should be approximately ½ of the total… | 160.00-O1 p.18 |
| HIGH AMBIENT TEMPERATURE FLT | The ambient temperature monitored is actually the temperature detected by a component mounted on… | 160.00-O1 p.18 |
| INVALID CURRENT SCALE FAULT | The logic board found the jumper configuration used to scale the output current to be invalid; the… | 160.00-O1 p.18 |
| LOW (CONV, OR PHASE A,B,C) HEATSINK TEMP. | A heatsink temperature sensor indicating a temperature below 37°F will cause the unit to shut down… | 160.00-O1 p.19 |
| OUTPUT CURRENT IMBALANCE | An imbalance among the three phases of output current. | 160.00-O1 p.19 |
| PRECHARGE BUS V IMBALANCE | Bus voltage imbalance occurring during the precharge period, which begins during pre-lube. | 160.00-O1 p.19 |
| PRECHARGE LOW VOLTAGE FAULT | The precharge DC Link voltage was below the required minimum; the unit is shut down. | 160.00-O1 p.19 |
| PRE-CHARGE HIGH VOLTAGE FAULT | The precharge DC Link failed to reach the required level; the unit is shut down. | 160.00-O1 p.19 |
| PRE-CHARGE FAULT LOCKOUT | The unit failed to make pre-charge on three consecutive tries; the unit shut down and locked out. | 160.00-O1 p.19 |
| PWM COMMUNICATIONS FAULT | Shutdown generated by a communications problem between the two microprocessors on the VSD logic… | 160.00-O1 p.19 |
| RUN RELAY FAULT | The missing run command was not asserted within the 5-second window; the unit shut down. | 160.00-O1 p.19 |
| SERIAL RECEIVE FAULT | Communications between the ACC and VSD logic is disrupted. | 160.00-O1 p.19 |
| VSD INITIALIZATION FAILED | At power-up, all the boards go through a process called initialization (memory locations are… | 160.00-O1 p.19 |
| FLTR HEATSINK OVERTEMP FLT | The temperature on a filter heatsink exceeded 167°F and the unit shut down. The '519' filter power… | 160.00-O1 p.20 |
| FLTR BUS OVER-VOLTAGE FLT | The harmonic filter's DC link voltage exceeded 860 VDC, initiating a Filter Bus Over-Voltage… | 160.00-O1 p.20 |
| FLTR LOW BUS VOLTAGE FLT | The filter's DC link voltage dropped to a level less than 60 VDC below the filter DC link voltage… | 160.00-O1 p.20 |
| FLTR PHASE A (B,C) OVERCURRENT | The maximum instantaneous harmonic filter current exceeded a preset limit; the unit is shut down.… | 160.00-O1 p.20 |
| FLTR PHASE LOCK LOOP FLT | A circuit called a "phase locked loop" on the filter logic board has lost synchronization with the… | 160.00-O1 p.20 |
| FLTR POWER SUPPLY FLT | The low voltage power supplies on the filter logic board have dropped below their permissible… | 160.00-O1 p.20 |
| FLTR BUS V IMBALANCE FLT | The filter DC link voltage is not shared equally - the center point should be approximately ½ of… | 160.00-O1 p.20 |
| FLTR PCHARGE LOW BUS V FLT | During pre-charge the filter's DC link failed to be equal to or greater than 50 VDC (41 VDC for 50… | 160.00-O1 p.21 |
| FLTR PCHARGE HI BUS V FLT | During pre-charge the filter's DC Link failed to reach at least 525 VDC (425 VDC for 50 HZ) 5… | 160.00-O1 p.21 |
| FLTR OVERLOAD FLT | One of the three phases of RMS filter current continuously exceeded a given threshold for seven… | 160.00-O1 p.21 |
| FLTR HIGH TDD FLT | The filter is not operating correctly and the input current to the VSD/filter system is not… | 160.00-O1 p.21 |
| WARNING - FILTER DATA LOSS | The communications link between the VSD logic board and the filter logic board, or the… | 160.00-O1 p.21 |
| FILTER DCCT 1 (OR 2) ERROR | The DCCT's are presumed to be bad and this shutdown is generated. | 160.00-O1 p.21 |
| FLTR RUN RELAY FLT | The redundant run command did not occur on the serial data link before the timer expired; the unit… | 160.00-O1 p.21 |
THE FOLLOWING MESSAGES PERTAIN TO ORIGINAL AND “STYLE A” UNITS ONLY
| Message on the display | What it means | Manual |
|---|---|---|
| FLTR CO-PROCESSOR FLT | A clock timing problem has occurred on the filter logic board. | 160.00-O1 p.21 |
| FLTR SW-BACKGRND FLT (or, FLTR SW-PRECHARGE LOOP FLT on early units) | The software did not complete the program loop in the allotted time - a watchdog timer function on… | 160.00-O1 p.21 |
| FLTR +15 V POWER SUPPLY FLT | A failure of a low voltage DC regulator on the filter logic board. | 160.00-O1 p.21 |
| FLTR -5 V POWER SUPPLY FLT | A failure of a low voltage DC regulator on the filter logic board. | 160.00-O1 p.21 |
| FLTR -15 V POWER SUPPLY FLT | A failure of a low voltage DC regulator on the filter logic board. | 160.00-O1 p.21 |
| FLTR THERMISTOR SUPPLY FLT | A failure of a low voltage DC regulator on the filter logic board. | 160.00-O1 p.21 |
| FLTR LOW HEATSINK TEMP FLT | The temperature as measured by the filter's thermistor (2 thermistors on 790 HP) has dropped below… | 160.00-O1 p.22 |
| FLTR A/D CONVERTER FLT | The '519' Filter logic's ground-level check converted to a digital value greater than zero. | 160.00-O1 p.22 |
| FLTR INPUT FREQUENCY FLT | The input frequency as measured by the Filter Logic is outside the acceptable range of +/- 1 Hertz. | 160.00-O1 p.22 |
| FLTR HIGH INPUT V FLT | The input voltage as measured phase-to-ground, and in "peak" volts, exceeded 424.6 Volts peak for… | 160.00-O1 p.22 |
| FLTR TRIANGLE WAVE FLT | A check of the '519' logic board's internal triangle waveform generator. The accuracy of the… | 160.00-O1 p.22 |
| FLTR SERIAL RECEIVE FAULT | A message which would occur on some early installations with the IEEE-519 Filter option. | 160.00-O1 p.22 |
| FLTR PHASE ROTATION FLT | The filter determines phase rotation upon receiving a run signal; once determined, the phase… | 160.00-O1 p.22 |
| FILTER DSP FAULT | An error occurred during read-back of DSP memory at initialization. | 160.00-O1 p.22 |
| FILTER MEMORY FAULT | An error occurred during read-back of External memory at initialization. | 160.00-O1 p.22 |
Functional identification
Maintenance
| Message on the display | What it means | Manual |
|---|---|---|
| Quarterly maintenance warning item (OptiView) | Monthly items are still required and appear on OptiView as a quarterly maintenance warning item. | 160.96-O1 p.28 |
| High oil temperature (HOT) shutdown | Unit shutting down on high oil temperature. | 160.96-O1 p.33 |
| Low oil pressure (OP) shutdown | Unit shutting down on low oil pressure. | 160.96-O1 p.33 |
| Warning message to re-lubricate (OptiView panel) | Motor bearing relubrication (greasing) due. Current YORK OptiView panels provide a warning message… | 160.96-O1 p.37 |
| Bearing temperature warning (above 149°F (65°C)) | If the temperature exceeds 149°F (65°C), a warning is issued; it is an indication that either the… | 160.96-O1 p.41 |
| Bearing RTD motor shutdown (194°F (90°C)) | Bearing RTDs are normally set to shut down the motors at 194°F (90°C); when this temperature is… | 160.96-O1 p.39 |
Troubleshooting
| Message on the display | What it means | Manual |
|---|---|---|
| The temperature difference between the condensing temperature and water off condenser is higher than normal. | Condenser tubes dirty or scaled. | 160.96-O1 p.Reduce condenser water inlet temperature. Check cooling tower and water circulation.42 |
| The temperature difference between condenser water on and water off is higher than normal, with normal evaporator pressure. | Insufficient condensing water flow. | 160.96-O1 p.Insufficient charge of refrigerant.Check for leaks and charge refrigerant into system.42 |
| The temperature difference between the leaving chilled water and the refrigerant in the evaporator is greater than normal with high discharge temperature. | Variable orifice problem. | 160.96-O1 p.Evaporator tubes dirty or restricted.Clean evaporator tubes.42 |
| The temperature of chilled water is too low with low motor amperes. | Insufficient load for system capacity. | 160.96-O1 p.PRVs fail to open.Check the PRV motor positioning circuit.42 |
| High chilled water temperature. | System overload. | 160.96-O1 p.Low oil pressure is displayed on the control center; the compressor does not start.Oil pump running in wrong direction.Check rotation of oil pump (Electrical Connections).42 |
| Low oil pressure is displayed on the control center; the compressor does not start. | Oil pump not running. | 160.96-O1 p.Unusually high oil pressure is displayed when the oil pressure display key is pressed when the oil pump is running.High oil pressure. The transducer is defective.Replace low or high oil pressure transducer.42 |
| Oil pump vibrates or is extremely noisy with some oil pressure when pressing the Oil Pressure display key. Note: When the oil pump runs without an oil supply, it vibrates and becomes extremely noisy. | Worn or failed oil pump. | 160.96-O1 p.Oil pump pumping capacity.Excessive end clearance pump. Other worn pump parts.Inspect and replace worn parts.42 |
| Oil pump pumping capacity. | The oil supply inlet is partially blocked. | 160.96-O1 p.When the oil pump VSD frequency increases to 55 + Hz to maintain target oil pressure.Oil filter is dirty.Change oil filter.42 |
| Oil refrigerant return not functioning. | Jet or orifice of oil return jet clogged. | 160.96-O1 p.No oil pressure registers when pressing the Oil Pressure display key when the oil pump runs.Faulty oil pressure transducer.Replace oil pressure transducer.43 |
Detection and Removal of Non-Condensible Gases
| Message on the display | What it means | Manual |
|---|---|---|
| Pressure in the storage vessel exceeds the saturation pressure of the refrigerant at the ambient temperature | Presence of non-condensible gases - if the pressure exceeds the saturation pressure by the amount… | 50.40-OM1 p.17 |
Checking Compressor for Performance
| Message on the display | What it means | Manual |
|---|---|---|
| Discharge pressure drops more than 5 Ibs. (34.5 kPa) in one minute | Indicates the discharge valves of the valve assembly are leaking | 50.40-OM1 p.31 |
| Failure of a compressor to reach 25” (85 kPa) vacuum | Indicates leaky suction valves; all compressors should pump a 25” (85 kPa) vacuum against normal… | 50.40-OM1 p.31 |
Gurgling Noise - Vacuum Pump Model CRR-1
| Message on the display | What it means | Manual |
|---|---|---|
| Gurgling noise | The vacuum pump will gurgle when the oil level in the pump is low | 50.40-OM1 p.43 |
Suction and Discharge Pressure Problems - Vacuum Pump Model CRR-1
| Message on the display | What it means | Manual |
|---|---|---|
| Insufficient suction pressure | Insufficient suction or discharge pressure | 50.40-OM1 p.43 |
| Insufficient discharge pressure | Discharge pressure insufficient although the recovery and/or recycle system is free from leaks and… | 50.40-OM1 p.43 |
Display messages
| Message on the display | What it means | Manual |
|---|---|---|
| WARNING - PURGE - EQ LOW SUCTION TEMP | Auto reset warning. Starting with Y.OPT.01.14.308 it does not inhibit purge operation. | SI0610 p.13 |
| WARNING - PURGE - EQ LOW SUCTION TEMP INHIBIT | Manual reset warning. Inhibits purge operation. | SI0610 p.13 |
| WARNING - PURGE - LOW COIL TEMP INHIBIT | Manual reset warning. Inhibits purge operation. | SI0610 p.13 |
| UPS - PERFORM BATTERY HEALTH CHECK | Start inhibit. | SI0610 p.13 |
| MBC - INVALID SOFTWARE | Start inhibit. | SI0610 p.13 |
| WARNING - PURGE - EQUALIZATION LOW SUCTION TEMP | Auto reset warning (name used before Y.OPT.01.14.308). Inhibited purge operation while active.… | SI0610 p.2 |
| MBC - POWER FAIL LANDING | Shutdown event; sets the Power Failing fault. | SI0610 p.2 |
| MOTOR CURRENT > 15 %FLA | Start inhibit. Changed from a 5 second trip time to an immediate shutdown. | SI0610 p.6 |
| VSD - HIGH PHASE A,B,or C INSTANTANEOUS CURRENT | Cycling fault for PYT model variable speed compressor drives only. Becomes a Safety fault if it… | SI0610 p.6 |
| VSD - HIGH PHASE A2,B2,or C2 INSTANTANEOUS CURRENT (dual) | Cycling fault for PYT model variable speed compressor drives only (dual). Becomes a Safety fault if… | SI0610 p.6 |
| MBC - LOW BEARING J TEMPERATURE | MBC generated cycling fault | SI0609 p.5 |
| MBC - LOW BEARING H1 TEMPERATURE | MBC generated cycling fault | SI0609 p.5 |
| MBC - LOW BEARING H2 TEMPERATURE | MBC generated cycling fault | SI0609 p.5 |
| MBC - LOW BEARING K TEMPERATURE | MBC generated cycling fault | SI0609 p.5 |
| MBC - LOW HEATSINK TEMPERATURE | MBC generated cycling fault | SI0609 p.5 |
| WARNING - COMPRESSOR - LOW DISCHARGE SUPERHEAT | Manual reset warning | SI0609 p.6 |
Unit Safety Fault Codes
| Message on the display | What it means | Manual |
|---|---|---|
| MVVSD - Excessive Shutdowns | Unit Safety Fault Code number 113, added with panel software version C.OPT.01.26.308 (P/N… | SI0283 p.4 |
MVVSD Faults
| Message on the display | What it means | Manual |
|---|---|---|
| Input Power Supply fault | Fault generated by the MVVSD drive after 10 seconds of input power loss. During the first 10… | SI0283 p.2 |
| Low Frequency Fault | Fault occurring when the VSD speed remains below the minimum speed longer than the allowed VSD Low… | SI0283 p.3 |
VGD Screens
| Message on the display | What it means | Manual |
|---|---|---|
| Surge Avoidance Surge Detected | LED on the VGD screen (replaces the former "Surge Detected" LED). Illuminates when full speed… | SI0252 p.1 |
| ACC Surge Detected | LED added to the VGD screen; present when the Motor Drive Type setpoint is set to VSD and the Motor… | SI0252 p.1 |
FAULTS
| Message on the display | What it means | Manual |
|---|---|---|
| VSD - High Phase (X) Instantaneous Fault | VSD Cycling fault. | SI0252 p.2 |
SECURITY LOG - MANUAL RESET WARNINGS
| Message on the display | What it means | Manual |
|---|---|---|
| Condenser or Evaporator Transducer Warning | Manual reset warning. When acknowledged (by pressing the WARNING RESET button), the actual warning… | SI0252 p.4 |
| Standby Lube Low Oil Pressure Warning | Manual reset warning. When acknowledged (by pressing the WARNING RESET button), the actual warning… | SI0252 p.4 |
| Excess Surge Detected Warning | Manual reset warning. When acknowledged (by pressing the WARNING RESET button), the actual warning… | SI0252 p.4 |
| Condenser or VGD Sensor Failure warning | Manual reset warning. When acknowledged (by pressing the WARNING RESET button), the actual warning… | SI0252 p.4 |
| Conditions Override VGD Warning Reset | Manual reset warning. When acknowledged (by pressing the WARNING RESET button), the actual warning… | SI0252 p.4 |
| Purge High Pressure Warning | Manual reset warning. When acknowledged (by pressing the WARNING RESET button), the actual warning… | SI0252 p.4 |
| Purge Float Switch Error Warning | Manual reset warning. When acknowledged (by pressing the WARNING RESET button), the actual warning… | SI0252 p.4 |
| Excess Purge Warning | Manual reset warning. When acknowledged (by pressing the WARNING RESET button), the actual warning… | SI0252 p.4 |
| Purge canister #X Full Warning | Manual reset warning. When acknowledged (by pressing the WARNING RESET button), the actual warning… | SI0252 p.4 |
| Setpoint Override Warning | Manual reset warning. When acknowledged (by pressing the WARNING RESET button), the actual warning… | SI0252 p.4 |
| Filter Not Running Warning | Manual reset warning. When acknowledged (by pressing the WARNING RESET button), the actual warning… | SI0252 p.4 |
VSD High Instantaneous Current Fault
| Message on the display | What it means | Manual |
|---|---|---|
| VSD-High Phase X Instantaneous Current (VSD) VSD-High Instaneous Current (MVVSD) | High instantaneous current fault on the variable speed drive; reported per phase (“Phase… | SI0212 p.3 |
VSD Cycling Shutdown Messages
| Message on the display | What it means | Manual |
|---|---|---|
| VSD - Low Phase A Inverter Baseplate Temperature | Cycling shutdown message applicable to this VSD (p/n 371-03789-xxx) | SI0058 p.2 |
| VSD - Low Phase B Inverter Baseplate Temperature | Cycling shutdown message applicable to this VSD (p/n 371-03789-xxx) | SI0058 p.2 |
| VSD - Low Phase C Inverter Baseplate Temperature | Cycling shutdown message applicable to this VSD (p/n 371-03789-xxx) | SI0058 p.2 |
VSD Safety Shutdown Messages
| Message on the display | What it means | Manual |
|---|---|---|
| VSD - High Phase A Inverter Baseplate Temperature | Safety shutdown message applicable to this VSD (p/n 371-03789-xxx) | SI0058 p.2 |
| VSD - High Phase B Inverter Baseplate Temperature | Safety shutdown message applicable to this VSD (p/n 371-03789-xxx) | SI0058 p.2 |
| VSD - High Phase C Inverter Baseplate Temperature | Safety shutdown message applicable to this VSD (p/n 371-03789-xxx) | SI0058 p.2 |
Style B Solid State Starter Faults
| Message on the display | What it means | Manual |
|---|---|---|
| LCSSS - Phase X Open SCR | Open SCR fault message that identifies the defective phase (X replaced by A, B or C as… | SI0089 p.2 |
| LCSSS - Phase X Heatsink Temperature - Stopped | Start Inhibit Fault (X replaced by A, B or C as appropriate) detected by the Style B Liquid Cooled… | SI0089 p.2 |
DIAGNOSTIC DISPLAY CODES
| Message on the display | What it means | Manual |
|---|---|---|
| P2 (remains on LED display) | FPGA configuration failed (note: P2 is also the pass code for “Full memory test… | SI0072 p.4 |
| 05 (remains on LED display) | Display Cont. configuration failed | SI0072 p.4 |
| Flash Query Test - “failed | Flash Query Test failed | SI0072 p.4 |
| Flash checksum - “failed | Flash checksum failed | SI0072 p.4 |
| BRAM Test - “failed | BRAM Test failed | SI0072 p.4 |
Extended Condenser Temperature Range
| Message on the display | What it means | Manual |
|---|---|---|
| Warning - High Pressure Limit | Warning threshold belonging to the warning and safety shutdown thresholds affected by the CONDENSER… | SI0201 p.11 |
Italian Language Corrections
| Message on the display | What it means | Manual |
|---|---|---|
| Condenser-Pressure Transducer out Of Range | Message listed in this bulletin only because its Italian translation was corrected in this software… | SI0201 p.10 |
| VSD-Low Converter Heatsink Temperature | Message listed in this bulletin only because its Italian translation was corrected in this software… | SI0201 p.10 |
| Control Panel-Power Failure | Message listed in this bulletin only because its Italian translation was corrected in this software… | SI0201 p.10 |
CURRENT IMBALANCE MESSAGES
| Message on the display | What it means | Manual |
|---|---|---|
| Motor or Starter - Output Current Imbalance | Safety shutdown message, used for both Variable Speed Drives and Style B Solid State Starters.… | SI0164 p.1 |
| LCSSS - Output Current Imbalance | Former safety shutdown message; combined into "Motor or Starter - Output Current Imbalance" in this… | SI0164 p.1 |
MOTOR LUBRICATION WARNINGS AND SHUTDOWN
| Message on the display | What it means | Manual |
|---|---|---|
| Motor-Bearing Lube Suggested | Motor lubrication warning (reminder); sent to the Microgateway as Warning Code 36. | SI0164 p.3 |
| Motor-Bearing Lube Required | Motor lubrication warning (reminder); sent to the Microgateway as Warning Code 37. | SI0164 p.3 |
| Motor-Lack of Bearing Lubrication | Motor lubrication safety shutdown; sent to the Microgateway as Warning Code 38. | SI0164 p.3 |
MICROGATEWAY - MOTOR LUBRICATION WARNING CODE CORRECTION
| Message on the display | What it means | Manual |
|---|---|---|
| Condenser - High Pressure Limit | Microgateway warning code 5. Listed only as the code that previous software versions incorrectly… | SI0164 p.3 |
FAULTS & WARNINGS
| Message on the display | What it means | Manual |
|---|---|---|
| WARNING - QUARTERLY SERVICE REQUIRED - CONTACT JCI Event Code: 330 GPIC Warning Code: 145 | Manual Reset Warning (planned maintenance alert). Shutdown Type: None. | SI0454 p.2 |
| WARNING - YEARLY SERVICE REQUIRED - CONTACT JCI Event Code: 331 GPIC Warning Code: 146 | Manual Reset Warning (planned maintenance alert). Shutdown Type: None. | SI0454 p.3 |
| WARNING - 3 YEAR SERVICE REQUIRED - CONTACT JCI Event Code: 332 GPIC Warning Code: 147 | Manual Reset Warning (planned maintenance alert). Shutdown Type: None. | SI0454 p.3 |
| WARNING - CONDENSER - HIGH SMALL TEMP DIFFERENCE Event Code: 13 GPIC Warning Code: 149 | Manual Reset Warning. Shutdown Type: None. Uses the “Condenser Small Temp Difference Warning… | SI0454 p.4 |
| WARNING - SYSTEM - REPLACE FILTER-DRIER GPIC Warning Code: 150 | Listed in Unit Warning Codes (SC.4); the Setpoints Report shows “System Replace Filter-Drier… | SI0454 p.7 |
FAULTS & WARNINGS - YTCS BALL TUBE CLEANING (YORK TUBE CLEANING SYSTEM)
| Message on the display | What it means | Manual |
|---|---|---|
| WARNING - CONDENSER - HIGH TUBE CLEANING TIME Event Code: 12 GPIC Warning Code: 8 | Auto Reset Warning. Shutdown Type: None. YTCS total cleaning run time has exceeded the Max Cleaning… | SI0454 p.10 |
System Status
| Message on the display | What it means | Manual |
|---|---|---|
| SYSTEM COASTDOWN (and countdown timer) | Chiller is in coastdown and the highest active event is a Safety Fault. Message is shown in red. | SI0396 p.2 |
| SAFETY SHUTDOWN - MANUAL RESTART | Chiller is stopped and the highest active event is a Safety Fault. Message is shown in red. | SI0396 p.2 |
| CYCLING SHUTDOWN - AUTO RESTART | Chiller is stopped and the highest active event is a Cycling Fault. Message is shown in orange. | SI0396 p.2 |
| START INHIBIT | Chiller is stopped and the highest active event is a Start Inhibit. Message is shown in orange. | SI0396 p.2 |
| MVVSD STARTUP - DRIVE NOT READY | Chiller is in the MVVSD Startup state and the drive is not ready. Message is shown in yellow. | SI0396 p.2 |
YZ Purge Control
| Message on the display | What it means | Manual |
|---|---|---|
| Purge Equalization Low Suction Temp Warning | Low Purge Suction Temperature during the equalization period. | SI0564 p.2 |
Access code entry attempts
| Message on the display | What it means | Manual |
|---|---|---|
| Access Code not processed - Wait 5 seconds between attempts. | Message displayed when an access code entry is attempted too soon after the previous attempt. | SI0564 p.8 |
| Access Code not processed - 1 Minute lockout active. | Message displayed when the system prevents additional logon attempts for 1 minute. | SI0564 p.8 |
| Invalid Access Code | The code entered does not match the encrypted structure for the chiller. | SI0564 p.8 |
| Expired Access Code | The code entered is valid, but the access code duration has expired. | SI0564 p.8 |
| Inactive Access Code | The code entered is valid, but the access time is in the future. | SI0564 p.8 |
Miscellaneous changes
| Message on the display | What it means | Manual |
|---|---|---|
| Chilled Liquid Flow Switch Open | Fault. In software version V09 this fault did not trip during the end Prelube for YK. | SI0564 p.13 |
Miscellaneous
| Message on the display | What it means | Manual |
|---|---|---|
| Condenser High Pressure Warning | Warning (YZ chillers, Condenser Temperature Range set to Extended) | SI0609 p.4 |
YK Low Discharge Superheat
| Message on the display | What it means | Manual |
|---|---|---|
| Low Discharge Superheat | Safety fault (changed behaviour in this software version) | SI0609 p.4 |
Cycling Shutdowns (apply to 575V/60Hz VSD)
| Message on the display | What it means | Manual |
|---|---|---|
| VSD-PRECHARGE-LOW DC BUS VOLTAGE | The DC Link voltage does not reach at least 60VDC (within 4 seconds) or at least 600VDC (within 20… | SI0148 p.1 |
| VSD-PRECHARGE-DC BUS VOLTAGE IMBALANCE | The Half DC Link voltage does not remain within +106VDC of the DC Link Voltage divided by 2 during… | SI0148 p.1 |
| VSD-LOW DC BUS VOLTAGE | The DC Link Voltage falls below 600VDC while running. | SI0148 p.1 |
| VSD-DC BUS VOLTAGE IMBALANCE | The Half DC Link Voltage does not remain within +106VDC of the DC Link Voltage divided by 2 while… | SI0148 p.1 |
| VSD-HARMONIC FILTER-PRECHARGE-LOW DC BUS VOLTAGE | The DC Link voltage does not reach at least 60VDC (within 100 milliseconds) or at least 630VDC… | SI0148 p.1 |
| VSD-HARMONIC FILTER-DC BUS VOLTAGE IMBALANCE | The Half DC Link Voltage does not remain within +63VDC of the DC Link Voltage divided by 2. | SI0148 p.1 |
Safety Shutdowns (apply to 575V/60Hz VSD)
| Message on the display | What it means | Manual |
|---|---|---|
| VSD-HARMONIC FILTER-HIGH BASEPLATE TEMPERATURE | The Baseplate temperature rises above the following limits: 424HP - 70.0°F, 174.2°C 608HP - 88.0°F,… | SI0148 p.2 |
Warning - DC Bus Active
| Message on the display | What it means | Manual |
|---|---|---|
| Warning - VSD - DC Bus Active | Non-annunciating warning, displayed in yellow text, alerting the user that the MVVSD, VSD or… | SI0271 p.2 |
Seal Lubrication Timer and Warning
| Message on the display | What it means | Manual |
|---|---|---|
| Warning - Seal Lubrication In Progress | Non-annunciating warning (changed to be a non-annunciating warning in this software version). | SI0271 p.9 |
Warnings and Safeties
| Message on the display | What it means | Manual |
|---|---|---|
| HARMONIC FILTER: OPERATION INHIBITED | Warning that Harmonic Filter operation has been inhibited. | SI0373 p.3 |
| Loss of Sub-Cooler Liquid Seal Warning | Warning indicating loss of the sub-cooler liquid seal. | SI0373 p.3 |
| Phase Rotation Fault Message | Fault message displayed after a power cycling event. Software version V04 fixes a bug that… | SI0373 p.4 |
YK High Temp Heat Pump
| Message on the display | What it means | Manual |
|---|---|---|
| Oil Sump Pressure is Too High | Trip. | SI0591 p.2 |
| failed to start with start inhibit | Unit failed to start; start inhibit active. | SI0591 p.2 |
UNIT SAFETY FAULT CODES
| Message on the display | What it means | Manual |
|---|---|---|
| 15 Motor - Lack of Motor Oil Change | Unit safety fault - lack of motor oil change. | SI0300 p.5 |
UNIT CYCLING FAULT CODES
| Message on the display | What it means | Manual |
|---|---|---|
| 69 Motor Auto Lubrication In Progress | Unit cycling fault - motor auto lubrication in progress. | SI0300 p.5 |
UNIT WARNING CODES
| Message on the display | What it means | Manual |
|---|---|---|
| 19 Warning - Auto Lube Req'd On Next Shutdown | Auto lubrication required on next shutdown. | SI0300 p.5 |
| 20 Warning - Auto Lube Grease Level Low | Auto-lubrication grease level low. | SI0300 p.5 |
| 21 Warning - Auto Lube Failed | Auto lubrication failed. | SI0300 p.5 |
| 22 Warning - Motor Oil Change Suggested | Motor oil change suggested. | SI0300 p.5 |
| 23 Warning - Motor Oil Change Required | Motor oil change required. | SI0300 p.5 |
| 24 Warning - Lack of Motor Oil Change | Lack of motor oil change. | SI0300 p.5 |
| Warning - Condenser - Freeze Threat - Flow Switch Open | Condenser freeze threat with flow switch open while the chiller is stopped. | SI0300 p.2 |
DETERMINING IF THE CIRCUIT BREAKER TRIPPED BECAUSE OF AN OVER CURRENT, GROUND FAULT, OR DUE TO THE SMART SENSOR SYSTEM
| Message on the display | What it means | Manual |
|---|---|---|
| SSS indicator Red | The SSS has indicated a fault. (Fault condition of the Smart Sensor System flip-dot indicator.) | SI0438 p.3 |
| Circuit breaker has automatically tripped open | The drive circuit breaker has tripped open; the trip must be traced to either the Smart Sensor… | SI0438 p.3 |
PROBLEM: VSD Stop Contacts Open Fault Appears
| Message on the display | What it means | Manual |
|---|---|---|
| VSD Stop Contacts Open | Fault appears on the OptiView panel display when 120 V AC is applied. | SI0440 p.2 |
PROBLEM: Flip Dot Does Not Turn Black or Flips from Black to Red
| Message on the display | What it means | Manual |
|---|---|---|
| Flip Dot Does Not Turn Black or Flips from Black to Red | When power is applied, the flip dot does not turn black or flips from black to red. | SI0440 p.3 |
PROBLEM: Circuit Breaker Does Not Open
| Message on the display | What it means | Manual |
|---|---|---|
| Circuit Breaker Does Not Open | The flip dot is red, but the circuit breaker does not open. | SI0440 p.3 |
PROBLEM: When Conducting the Optical Sensor Test the Flip Dot Does Not Turn Red.
| Message on the display | What it means | Manual |
|---|---|---|
| When Conducting the Optical Sensor Test the Flip Dot Does Not Turn Red. | The flip dot does not turn red during the optical sensor test. | SI0440 p.4 |
PROBLEM: When Conducting the CO Sensor Test the Flip Dot Does Not Turn Red.
| Message on the display | What it means | Manual |
|---|---|---|
| When Conducting the CO Sensor Test the Flip Dot Does Not Turn Red. | The flip dot does not turn red during the CO sensor test. | SI0440 p.5 |
Possible errors when installing the private key
| Message on the display | What it means | Manual |
|---|---|---|
| SD card is not present | The SD card interface port is not detecting that a SD card is installed. | SI0622 p.5 |
| Key file is missing | There is no file on the SD card named NEWCKEY.dat. | SI0622 p.5 |
| Invalid file | The NEWCKEY.dat file does not have the correct file ID. | SI0622 p.5 |
| Signature error | The security signature associated with the software version is not correct. | SI0622 p.5 |
| Incorrect software version | The software version used to create the key does not match the software installed on the panel. | SI0622 p.5 |
| Time error | The private key is more than 30 days old. | SI0622 p.5 |
| Incorrect serial number | The serial number that was used to create the key does not match the serial number entered in the… | SI0622 p.5 |
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