Trane IntelliPak CGAF Series - Specific Diagnostic Troubleshooting

48
System Testing & Troubleshooting
DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED
CGM ICS Temperature Sensor Fail Problem: CGM is receiving a signal which is out of range from the CGM ICS Temperature Sensor input.
The unit is reading a signal that is out of range for the CGM ICS Temperature sensor input on the CGM. (Temp < -40 F or Temp > 200 F).
No change in unit operation occurs. This diagnostic is for information only.
(INFO) An automatic reset occurs after the CGM ICS Temperature Sensor returns to its allowable range. In order to prevent rapid cycling of the diagnostic, there is a 10 second delay prior to the
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CGM Module Data Storage Error Problem: There was a data transmission error. Check: This can be caused by an intermittent power loss. Turn the unit off for 1-2 minutes, then back on again. If diagnostic persists, then the CGM ma
y
need to be re
p
laced.
An error occurred while the CGM was writing data to its internal non-volatile memory (EEPROM).
An information only diagnostic will be displayed at the Human Interface.
(INFO) A manual reset may be made at the Human Interface, at Tracer, or by cycling power to the CGM.
CGM OA Temp Sensor Failure Problem: The Outside Air Temperature sensor input is out of range. Check: Sensor resistance between 830 ohms (200 F) and 345.7Kohms (-40 F). If so, check field/unit wiring between Sensor and CGM.
The unit is reading a signal that is out of range for the Outside Air Temperature sensor input on the CGM. (Temp < -40 F or Temp > 200 F).
Unit actions that occur when this diagnostic is active include; a. Low Ambient Compressor Lockout function is disabled b. Low Ambient Pump Override function is activated (ie: Solution Pump ON request is issued). c. LPC Bypass Time is set to Minimum Bypass Time (time used for OA Temp >65 degF). d. If Leaving Solution Reset type selected is OA Temp Reset, then the Reset type reverts to NONE for the duration of the failure.
(PAR) An automatic reset occurs after the OA Temp input returns to its allowable range. In order to prevent rapid cycling of the Diagnostic, there is a 10 second delay before the automatic reset.
CGM Zone Temp Sensor Failure Problem: The CGM Zone Temperature sensor input is out of range. Check: Sensor resistance between 830 ohms (200 F) and 345.7Kohms (-40 F). If so, check field/unit wiring between Sensor and CGM.
The Leaving Solution Reset type selected is Zone Temp Reset, and the unit is reading a signal that is out of range for this input (Temp < -40 F or Temp > 200 F).
The Reset type reverts to NONE for the duration of the failure.
(PAR) An automatic reset occurs after the designated Zone Temperature signal returns to its allowable range. In order to prevent rapid cycling of the Diagnostic, there is a 10 second delay before the automatic reset.