108 fault, warning and safety-shutdown messages documented by the manufacturer for the Simplex 4100ES, from 6 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.
Master Motherboard
| Message on the display | What it means | Manual |
|---|---|---|
| RUI CLASS A TROUBLE (LED1) | Master motherboard LED indicating an RUI Class A trouble. | LT0350 p.27 |
| RUI PRIMARY SHORT TROUBLE (LED2) | Master motherboard LED indicating an RUI primary short trouble. | LT0350 p.27 |
| RUI SECONDARY SHORT TROUBLE (LED3) | Master motherboard LED indicating an RUI secondary short trouble. | LT0350 p.27 |
| Negative Ground Fault | Negative ground fault occurring on the RUI. | LT0350 p.35 |
CPU Card LEDs
| Message on the display | What it means | Manual |
|---|---|---|
| Bad Master CRC or No Master Present | Bootloader status indicated during system start up. LED4 On, LED3 Off, LED2 Off, LED1 Off. | LT0350 p.29 |
| Diagnostic Fail - RAM | Bootloader status indicated during system start up. LED4 On, LED3 Off, LED2 Off, LED1 On. | LT0350 p.29 |
| Diagnostic Fail - Bootloader CRC | Bootloader status indicated during system start up. LED4 On, LED3 Off, LED2 On, LED1 Off. | LT0350 p.29 |
| TROUBLE LED (LED5) FLASHING | CPU has power but the software is failing to hit the watchdog. | LT0394 p.24 |
| TROUBLE LED (LED5) ON | The 5 V is outside the acceptable range. | LT0394 p.24 |
LED/Switch Controller Card
| Message on the display | What it means | Manual |
|---|---|---|
| LED 1 (COMM LOSS LED) | Illuminates if communication loss between the controller and the CPU occurs. It is independent of… | LT0350 p.46 |
| COMM LOSS LED (LED1) | LED on the 64/64 LED/switch controller card. Illuminates if communication loss between the… | LT0394 p.38 |
NIC Card LED Indications
| Message on the display | What it means | Manual |
|---|---|---|
| LED1 (yellow) | Illuminates when: the host 4100 requests it to illuminate; a transmission fails; the NIC is… | LT0350 p.61 |
SPS LED Indications
| Message on the display | What it means | Manual |
|---|---|---|
| LED2 (yellow) | Illuminates when NAC 2 is ON or in Fault. | LT0350 p.79 |
| LED3 (yellow) | Illuminates when NAC 3 is ON or in Fault. | LT0350 p.79 |
| LED4 (yellow) | Illuminates to indicate a communications loss with the system CPU; normally off. | LT0350 p.79 |
| LED5 (yellow) Slow blink | Class A open circuit Fault. | LT0350 p.79 |
| LED5 (yellow) Fast blink | Short circuit Fault. | LT0350 p.79 |
| LED5 (yellow) On steady | No devices detected/ channel failure. | LT0350 p.79 |
| LED6 (yellow) Single blink | Positive earth fault. | LT0350 p.79 |
| LED6 (yellow) Double blink | Negative earth fault. | LT0350 p.79 |
| LED6 (yellow) Triple blink | Battery Fault. | LT0350 p.79 |
| LED6 (yellow) Quadruple blink | Charger Fault. | LT0350 p.79 |
| LED6 (yellow) On steady | Overcurrent fault. | LT0350 p.79 |
| LED5 (yellow) - slow blink | IDNet status: Class A open circuit Fault. | LT0394 p.66 |
| LED5 (yellow) - fast blink | IDNet status: Short circuit Fault. | LT0394 p.66 |
| LED5 (yellow) - on steady | IDNet status: No devices detected / channel failure. | LT0394 p.66 |
| LED6 (yellow) - single blink | Power supply status: Positive earth fault. | LT0394 p.66 |
| LED6 (yellow) - double blink | Power supply status: Negative earth fault. | LT0394 p.66 |
| LED6 (yellow) - triple blink | Power supply status: Battery Fault. | LT0394 p.66 |
| LED6 (yellow) - quadruple blink | Power supply status: Charger Fault. | LT0394 p.66 |
| LED6 (yellow) - on steady | Power supply status: Overcurrent fault. | LT0394 p.66 |
Troubleshooting an SPS
| Message on the display | What it means | Manual |
|---|---|---|
| IDNet Power Monitor Trouble | There is no output voltage from the power supply. | LT0350 p.80 |
| Extra Device | One or more extra devices are present on the loop, i.e. devices that have not been configured for… | LT0350 p.80 |
| Class A Trouble | There is an open circuit fault detected on the IDNet channel. | LT0350 p.80 |
| Earth Fault Search | Displayed during the Earth Fault Search diagnostic function. The front panel display indicates how… | LT0350 p.80 |
| Short Circuit | A short circuit fault is detected on the IDNet channel. | LT0350 p.80 |
| Channel Fail | Each device on the IDNet channel has been configured, but none of the configured devices are… | LT0350 p.80 |
| No Answer/Bad Answer | The 4100ES is put into a diagnostic mode and finds a device not responding, or responding… | LT0350 p.80 |
| Output Abnormal | Abnormal output condition at field devices. | LT0350 p.80 |
| Mains fail fault | AC mains supply failure. | LT0350 p.76 |
| SPS Over Current | SPS over current fault in the system. | LT0350 p.91 |
| No Answer/ Bad Answer | Device communication message. | LT0394 p.67 |
| Noisy Buzz from the SPS | Audible buzz from the SPS. | LT0394 p.67 |
Troubleshooting IDNet Faults
| Message on the display | What it means | Manual |
|---|---|---|
| No Answer | A device is missing. | LT0350 p.107 |
| Bad Answer | A faulty device or a noisy communications channel. | LT0350 p.107 |
Using Install Mode
| Message on the display | What it means | Manual |
|---|---|---|
| Install Mode Active | Single fault indication shown while any device is in the Install Mode list. Devices in the Install… | LT0350 p.109 |
Brigade Interfaces
| Message on the display | What it means | Manual |
|---|---|---|
| SPS CPU Fault | Hardware fault signal; the Fault (Trouble) relay on the Alarm Relay Card is link connected to this… | LT0350 p.122 |
Search Results
| Message on the display | What it means | Manual |
|---|---|---|
| Non-point fault | A ground that cannot be traced to an addressable point (for example, a shield). Non-point faults… | LT0350 p.139 |
| Point fault | A ground at a specific addressable point. Point faults can be found at any point in the system that… | LT0350 p.139 |
| CARD 2, IDNET CARD (250 POINTS) M1, CHANNEL OUTPUT EARTH FAULT | Earth fault between the IDNet channel output and the first isolator on the line. | LT0350 p.139 |
| CARD 2, IDNET CARD (250 POINTS) M1-18, 4009A NAC EARTH FAULT | Earth fault detected on the 4009 IDNet NAC Extender before the repeater connected to that circuit… | LT0350 p.139 |
| CARD 2, IDNET CARD (250 POINTS) M1-18, 4009A REPEATER EARTH FAULT | Earth fault detected after the repeater connected to that circuit is turned on. | LT0350 p.139 |
| CARD 2, IDNET CARD (250 POINTS) M1-3, IDNET ISOLATOR EARTH FAULT | Earth fault detected after the IDNet isolator was turned on. | LT0350 p.139 |
| CARD 2, IDNET CARD (250 POINTS) M1, EARTH FAULT SEARCH FAULT CLEAR FAIL | Fault not cleared - an IDNet channel that has been isolated for fault detection still has the earth… | LT0350 p.139 |
| FAULT NOT FOUND FAULT CLEAR FAIL | The search could not locate the fault, but it acknowledges that a fault exists. FAULT NOT FOUND is… | LT0350 p.140 |
Programming Requirements
| Message on the display | What it means | Manual |
|---|---|---|
| Fault indication after 8 hours of isolate | Function that must be programmed under custom control to comply with AS 4428.1 (contained in the… | LT0394 p.108 |
Earth Fault Detection
| Message on the display | What it means | Manual |
|---|---|---|
| CARD 17, ANALOG AUDIO CONTROLLER AUDIO RISER 1 EARTH FAULT | Example of a non-point fault result: a ground that cannot be traced to an addressable point (for… | LT0394 p.117 |
| CARD 003, FLEX 50 AMPLIFIER 3-10-0 EARTH FAULT | Example of a point fault result: an earth fault at a specific addressable point (3 = card address,… | LT0394 p.117 |
| FAULT NOT FOUND / FAULT CLEAR FAIL | Message in the lower right corner of the LCD: the search could not locate the fault, but it… | LT0394 p.118 |
| NO FAULT | The IDNet channel search could not locate any earth faults on that channel. | LT0394 p.118 |
| RESULT NOT AVAILABLE | There is no result to view. This message comes up only when you have selected “Last Search Result”… | LT0394 p.118 |
The IDNet Card - LEDs
| Message on the display | What it means | Manual |
|---|---|---|
| LED1 - On steady | The IDNet card is not communicating with the 4100U CPU (normally off). | LT0394 p.95 |
| LED2 - Steady on | Channel failure, i.e. communication problems with configured devices. Indicates a problem with the… | LT0394 p.95 |
| LED2 - One repetitive blink | Line short. | LT0394 p.95 |
| LED2 - Two repetitive blinks | Class A failure or an open line. | LT0394 p.95 |
Managing Alarm Conditions
| Message on the display | What it means | Manual |
|---|---|---|
| ***ALARM*** Press <FIRE ALARM ACK> to review. ALARMS = 1 ISOLATED = 0 FAULT = 0 | Fire alarm condition present. Red Fire Alarm and common Zone Alarm LEDs flash, the affected zone's… | LT0351 p.21 |
| ACF ISOLATE PRESS <ACK> key to acknowledsge | The Ancillary Control Facility (ACF) relay outputs, used to control equipment that is not part of… | LT0351 p.23 |
| Alarms Present - System Reset Aborted | The system attempted to reset a point for 25 seconds (displaying "System Reset in Progress") and… | LT0351 p.26 |
Managing Fault and Isolate Conditions
| Message on the display | What it means | Manual |
|---|---|---|
| **FAULT** Press FAULT ACK to review. ALARMS = 0 FAULTS = 1 ISOLATES = 0 | One or more fault conditions are present. The yellow FAULT indicator flashes and the sounder… | LT0351 p.29 |
| ISOLATE (yellow ISOLATE indicator flashing) | One or more zones have been isolated - an abnormal, non-fire condition. The yellow ISOLATE… | LT0351 p.28 |
| Open circuit fault on IDNet communications line (latching) | A latching fault: it remains in the system until it is reset manually, even after the wiring/device… | LT0351 p.29 |
Testing and Controlling Points
| Message on the display | What it means | Manual |
|---|---|---|
| System Fault - point disabled | A fault condition and message indicating that the point is disabled (taken "offline"). A disabled… | LT0351 p.8 |
| Manual Override Fault | Reminder that an output point (notification device, relay) has been manually turned ON or OFF and… | LT0351 p.35 |
Displaying and Modifying Detailed Point Attributes
| Message on the display | What it means | Manual |
|---|---|---|
| Class A Fault (Status of Class "A" Cards) | Display-only attribute (via <MORE INFO>) showing whether the Class A card is experiencing a fault… | LT0351 p.42 |
Setting Access Levels and Logging In
| Message on the display | What it means | Manual |
|---|---|---|
| ERROR. . . INVALID PASSCODE | The passcode entered for the "Change Access Level?" option is not a valid system code. | LT0351 p.48 |
| ACCESS DENIED | Three unsuccessful passcode attempts; the access level will not be altered. | LT0351 p.48 |
| Non-clearable fault - access level 4 login | A non-clearable fault exists while logged in at access level 4. It ensures that the system is… | LT0351 p.50 |
System Test Procedures
| Message on the display | What it means | Manual |
|---|---|---|
| No walk test points configured for: WALK TEST GROUP X | The selected Walk Test group (X equals 0 through 7) has no configured points. | LT0351 p.73 |
| System Fault - Walk Test enabled | Reported to remind you that the Walk Test is enabled: the SYSTEM FAULT LED illuminates, the… | LT0351 p.73 |
| ** FAULT ** Press <FIRE ALARM ACK> to review FIRE = 0 PRI2 = 0 SUPV = 0 FLT = 1 | System fault summary (FLT = 1) shown after a control point is forced OFF; the same display appears… | LT0351 p.74 |
| MONITOR CARD 1 ZONE NUMBER 12 FIRE MONITOR ZONE DISABLE FAULT | The monitor zone point is disabled. The disabled point causes a system fault condition which is… | LT0351 p.76 |
| ** WARNING ** Press <DISABLE> to abort ZN12 will ALARM in 60 seconds | Warning that the zone being enabled is still in alarm and that the system will sound an alarm if… | LT0351 p.77 |
Printing Reports
| Message on the display | What it means | Manual |
|---|---|---|
| Current State: Normal, Fault, Dirty, Excessively Dirty, Almost Dirty | Possible per-point sensor states reported on the TrueAlarm Service Report. The TrueAlarm Status… | LT0351 p.81 |
Maintenance Procedures
| Message on the display | What it means | Manual |
|---|---|---|
| Power supply supervision fault | Power supply supervision fault condition of the control and indicating equipment (AS 1851 Item… | LT0351 p.85 |
Upgrading an Existing Configuration
| Message on the display | What it means | Manual |
|---|---|---|
| Panel reports the existing configuration is an incompatible version | Non-matching configuration - panel repeatedly restarts | LT0400 p.17 |
| the existing configuration is an incompatible version | A panel with a non-matching configuration reports that the existing configuration is an… | LT0400 p.17 |
AS1668 Fan Faults
| Message on the display | What it means | Manual |
|---|---|---|
| Amber "FLT" LED ON | Mechanical Services Board fault | LT0400 p.74 |
| Amber Fault LED ON | AS1668 Fan Start Failure | LT0400 p.74 |
| FAN #1 FAULT | Fan fault trouble point (P1265, point type TROUBLE) that drives the amber fault LED | LT0400 p.82 |
| Mechanical Services Board Fault | Fault indicated on the AS1668 fan control - the amber "FLT" LED turns ON. | LT0400 p.68 |
| AS1668 Fan Start Failure | Fan has been commanded to start but airflow is not confirmed - the amber Fault LED turns ON. | LT0400 p.68 |
| AS1668 Fan Stop Failure | Fan has been commanded to stop but airflow is still present - the amber Fault LED turns ON. | LT0400 p.68 |
System Digital Pseudo Points
| Message on the display | What it means | Manual |
|---|---|---|
| P132 ANALOG SENSOR ALMOST DIRTY LOG ENABLE | Trouble point. When activated, lowers the dirty threshold by 10 analog units so any analog sensors… | LT0400 p.118 |
| P214 Clear Alarm Verification Tallies (Trouble) | When activated, clears all alarm verification tallies in the local panel; the Alarm Verification… | LT0400 p.118 |
| P248 EARTH FAULT LATCH ENABLE | Trouble point that is turned on when earth fault latching is enabled | LT0400 p.118 |
| P447 IDNET DUPLICATE SEARCH ACTIVE | Trouble pseudo that is ON when IDNet Duplicate Search is activated | LT0400 p.118 |
| P448 IDNET WEAK SEARCH ACTIVE | Trouble pseudo that is ON when IDNet Weak Search is activated | LT0400 p.118 |
| P478 Inhibit Device Troubles while Disabled (V12.06) | If this point is on, device level troubles (e.g., head missing, no answer, wrong type) are… | LT0400 p.118 |
| P482 RECURRING TROUBLE FILTERING ACTIVE | Trouble point the master activates whenever the algorithm to filter recurring runaway device… | LT0400 p.118 |
| P484 INSTALL MODE ACTIVE | Trouble point the master activates whenever a point is in Install Mode | LT0400 p.119 |
| P480 COMPACT FLASH MISSING/ FAILED | Trouble point the master activates when the Compact Flash is missing or failed | LT0400 p.119 |
| P499 FIRMWARE NEEDS UPDATE | Trouble point the master activates when the firmware needs update | LT0400 p.119 |
System Analog Pseudo Points
| Message on the display | What it means | Manual |
|---|---|---|
| A98 BATTERY TROUBLE COUNTER | Stores the number of times a Battery Fault has been detected since last reboot | LT0400 p.119 |
| A99 AC POWER FAIL COUNTER | Stores the number of times a Mains Fail Fault has been detected since last reboot | LT0400 p.119 |
| A112 GROUND TROUBLE COUNTER | Stores the number of times an Earth Fault has been detected since last reboot | LT0400 p.120 |
| A115 EXCESSIVELY DIRTY (OUT OF RANGE) | Stores the number of Excessively Dirty detectors | LT0400 p.120 |
| A116 DIRTY SENSOR COUNTER | Stores the number of Dirty detectors | LT0400 p.120 |
| A117 ALMOST DIRTY COUNTER | Stores the number of Almost Dirty detectors | LT0400 p.120 |
11 of 108 messages have a page of their own. Other documentation for this model: installation · operation · specifications · wiring diagrams. All Simplex models: Simplex manuals.