SI0457 — YMC2 Mod B Software Changes V11

Document type	Service Information Letter
Document number	SI0457
Equipment	YMC2 Magnetic Bearing Centrifugal Chiller
Brand	YORK
File size	4.3 MB

Fault codes in this document

1 of these messages are explained on a page of their own — cause, what to check, reset — written from this manual:

FAULTS & WARNINGS

Code / display	Meaning	Cause	Action	Page
WARNING - QUARTERLY SERVICE REQUIRED - CONTACT JCI	Quarterly Service Required Warning — Manual Reset Warning, no shutdown (Shutdown Type: None). Event Code: 330. GPIC Warning Code: 145.	Enable: Always. Allowed States: All. Bypass Time: None. Trip Time: Instantaneous. Set Event: Set when Days Since Last Quarterly Service >= 90 Days.	Release Event: Release after set. Manual reset required; Reset Password: 0726. Manual Reset of this warning shall be added into the Security Log with the message of “Quarterly Service Required Warning Reset”. Days Since Last Quarterly Service is set to 0 when this warning is cleared. Clear/Disable: Quarterly Service Warning is Disabled.	2
WARNING - YEARLY SERVICE REQUIRED - CONTACT JCI	Yearly Service Required Warning — Manual Reset Warning, no shutdown (Shutdown Type: None). Event Code: 331. GPIC Warning Code: 146.	Enable: Always. Allowed States: All. Bypass Time: None. Trip Time: Instantaneous. Set Event: Set when all of the following are true: • Days Since Last Yearly Service >= 365 Days • Operating Hours Since Last Yearly Service > 2,890 Hours (33% of a year’s run hours = 243650.33)	Release Event: Release after set. Manual reset required; Reset Password: 0726. Manual Reset of this warning shall be added into the Security Log with the message of “Yearly Service Required Warning Reset”. When this warning is cleared: Days Since Last Yearly Service is set to 0, Operating Hours Since Last Yearly Service is set to 0, and Purge Count Since Last Filter-Drier Replacement is set to 0. Clear/Disable: Yearly Service Warning is Disabled.	3
WARNING - 3 YEAR SERVICE REQUIRED - CONTACT JCI	3 Year Service Required Warning — Manual Reset Warning, no shutdown (Shutdown Type: None). Event Code: 332. GPIC Warning Code: 147.	Enable: Always. Allowed States: All. Bypass Time: None. Trip Time: Instantaneous. Set Event: Set when Days Since Last 3 Year Service >= 1095 Days.	Release Event: Release after set. Manual reset required; Reset Password: 0726. Manual Reset of this warning shall be added into the Security Log with the message of “3 Year Service Required Warning Reset”. Days Since Last 3 Year Service is set to 0 when this warning is cleared. Clear/Disable: 3 Year Service Warning is Disabled.	3
WARNING - CONDENSER - HIGH SMALL TEMP DIFFERENCE	Condenser High Small Temp Difference — Manual Reset Warning, no shutdown (Shutdown Type: None). Event Code: 13. GPIC Warning Code: 149.	Enable: Always. Allowed States: Running. Bypass Time: None. Trip Time: 30 Minutes. Set Event: Set when Condenser Small Temp Difference > Condenser Small Temp Difference Warning Threshold.	Release Event: Release when Condenser Small Temp Difference <= Condenser Small Temp Difference Warning Threshold. Manual reset required; Reset Password: 0726. Manual Reset of this warning shall be added into the Security Log with the message of “Condenser High Small Temp Difference Warning Reset”. Clear/Disable: Condenser High Small Temp Difference Warning is Disabled.	4

PANEL FAULTS & WARNINGS

Code / display	Meaning	Cause	Action	Page
MBC - HIGH ROTOR ELONGATION RATE	MBC High Rotor Elongation Rate Fault — Safety Fault, Immediate shutdown. Event Code: N/A. GPIC Safety Fault Code: 83.	Enable: When Rotor Elongation > 350 µm. Allowed States: Running, Soft Shutdown. Bypass Time: 1 Minute. Trip Time: 1 Minute / 3 Minutes (see set criteria). Set Event: Set when either of the following are true: • Rotor Elongation Rate > Rotor Elongation Fault Low Rate for 3 Minutes • Rotor Elongation Rate > Rotor Elongation Fault High Rate for 1 Minute	Immediate shutdown. Release Event: Release when set criteria is not true. Clear/Disable: Never. Reset Password: None. Special Handling: None.	9

VSD COOLING PROTECTION — FAULTS & WARNINGS

Code / display	Meaning	Cause	Action	Page
WARNING - VSD - HIGH HX APPROACH TEMPERATURE	VSD High HX Approach Temperature Warning — Manual Reset Warning, no shutdown (Shutdown Type: None). Event Code: N/A. GPIC Warning Code: 45.	Enable: Always. Allowed States: Running, Soft Shutdown. Bypass Time: 20 Minutes. Trip Time: 10 Minutes. Set Event: Set when VSD HX Approach Temp > Expected VSD HX Approach Temp + VSD HX Approach Temp Warning Offset.	Release Event: Release when set criteria not true. Reset Password: None. Special Handling: None. Clear/Disable: VSD Cooling Protection is Disabled.	12
VSD - HIGH HX APPROACH TEMPERATURE	VSD High HX Approach Temperature Fault — Safety Fault, Immediate shutdown. Event Code: N/A. GPIC Safety Fault Code: 94.	Enable: Always. Allowed States: Running, Soft Shutdown. Bypass Time: 20 Minutes. Trip Time: 10 Minutes. Set Event: Set when VSD HX Approach Temp > Expected VSD HX Approach Temp + VSD HX Approach Temp Fault Offset.	Immediate shutdown. Release Event: Release when set criteria is not true. Reset Password: None. Special Handling: None. Clear/Disable: VSD Cooling Protection is Disabled.	13

UNIT WARNING CODES (SC.4)

Code / display	Meaning	Page
6	WARNING - QUARTERLY SERVICE REQUIRED - CONTACT JCI	7
7	WARNING - YEARLY SERVICE REQUIRED - CONTACT JCI	7
8	WARNING - 3 YEAR SERVICE REQUIRED - CONTACT JCI	7
9	WARNING - CONDENSER - HIGH SMALL TEMP DIFFERENCE	7
45	WARNING - VSD - HIGH HX APPROACH TEMPERATURE	18

UNIT SAFETY FAULT CODES (SC.2)

Code / display	Meaning	Cause	Action	Page
83	MBC - HIGH ROTOR ELONGATION RATE			11
94	VSD - HIGH HX APPROACH TEMPERATURE			18

Every row above cites the page of this document it came from, and each one is re-read against that page by an automatic check before publication. The short table of all YORK YMC2 messages: fault codes.

Manufacturer document, published here as reference material for equipment we supply. The original lives at docs.johnsoncontrols.com. The rights holder may ask us to take it down — we will.