Trane IntelliPak CGAF Series - Page 56

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System Testing & Troubleshooting
DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED
Hot Start Load Limit (Auto) Problem: The Leaving Solution Temperature is too hot.
Hot Operation Response is set to "50% CAPACITY PER CKT, AUTO RESET DIAG". The Leaving Solution Temp exceeded the Hot Start Load Limit Setpoint after the Hot Start Time Interval
expired.
While this diagnostic is active, the second compressor on each refrigerant circuit is shut off and/or prevented from staging ON.
(PAR) An automatic reset occurs after the Leaving Solution Temperature decreases 5 deg F or more below the Hot Start Load Limit Setpoint.
Hot Start Load Limit (Info) Problem: The Leaving Solution Temperature is too hot.
Hot Operation Response is set to "ALLOW NORMAL OPERATION, INFO RESET DIAG". The Leaving Solution Temp exceeded the Hot Start Load Limit Setpoint after the Hot Start Time Interval
expired.
No change in unit operation occurs. This diagnostic is for information only.
(INFO) An automatic reset occurs after the Leaving Solution Temperature decreases 5 deg F or more below the Hot Start Load Limit Setpoint.
Hot Start Load Limit (Man) Problem: The Leaving Solution Temperature is too hot.
Hot Operation Response is set to "SHUT OFF COMPRESSORS, MANUAL RESET DIAG". The Leaving Solution Temp exceeded the Hot Start Load Limit Setpoint after the Hot Start Time Interval expired.
A "lockout all Ckts" request is issued to the compressor staging function. The Unit will deenergize the following relays: Compressor Relays, LPC Bypass Relays, Liquid Line Solenoids, and HGBP Relay. Comfort/Process Cooling, and Ice Building are terminated and prevented from occurring until the diagnostic condition is cleared.
(PMR) A manual reset is required after this diagnostic occurs. The Diagnostic can be reset by the unit mounted Human Interface Module or Tracer, or by cycling power to the CGM.
Hot Start Load Limit Setpoint Fail Problem: The Hot Start Load Limit Setpoint is out of range. Check: If Hot Start Load Limit Setpoint Source is assigned to either GBAS module, but this setpoint has not been assigned to one of that GBAS module’s analog inputs, this diagnostic can occur.
The unit is reading a signal that is out of range for the Hot Start Load Limit Setpoint.
The default (HI) Hot Start Load Limit Setpoint will become the active setpoint while this diagnostic is active.
(PAR) An automatic reset occurs after the designated Hot Start Load Limit Setpoint source sends a signal that is within range for 10 continuous seconds, or after a different setpoint source is user-defined.