Trane CVHE Troubleshooting Manual page 3

Problem 29: Display is locked up. No communication,
Data Not Valid Diagnostic........................................ 15
Problem 30: Display on the CLD is flashing.............. 15
Problem 31: External Chilled Water Setpoint
Problems. .................................................................. 15
Problem 32: External Current Limit setpoint
does not work............................................................ 16
Problem 33: Fault Relay open on an AFD (air cooled
adaptive frequency Drive)......................................... 16
Problem: 34 Fault relay open on Solid State Starter (SSS)
16
Problem 35: Free cooling (FC)
operation problems.................................................... 16
Problem 36: Evaporator Water Temperatures are re-
versed (2 pass units only).......................................... 17
Problem 37: Low Evaporator refrigerant
temperature ............................................................... 17
Problem 38: 2F1, 2F2 and 2F3 Fuses blow - On 200-575
volt units when switching the starter disconnect from
OPEN to CLOSED. .................................................. 17
Problem 39: GPM/Tonnage option problems............. 17
Problem 40: High Vacuum Lockout........................... 17
Problem 41: Hot Gas Bypass (HGBP)
Does Not Work. ........................................................ 18
Problem 42: Ice Making ............................................. 18
Problem 43: IGV will not move in the Service Test Man-
ual mode.................................................................... 19
Problem 44: IPC Buffer Diagnostics .......................... 19
Problem 45: KW reads high by a factor of 3, with option-
al PT installed. .......................................................... 19
Problem 46: Loading Problems ..................................19
Problem 47: Memory Error ........................................20
Problem 48: Momentary Power Loss (MPL) .............20
Problem 49: Motor winding temperatures changing rap-
idly and randomly ..................................................... 21
Problem 50: Differential Oil Pressure Calibration Diag-
nostic following post lube. Secondary problem may be
the oil pump will not shut off after post lube............ 21
Problem 51: Differential Oil Pressure ........................ 21
Problem 52: Oil temperature High. ............................ 22
Problem 53: Oil temperature Low (Startup)............... 22
Problem 54: Low Oil Temperature
(Running) .................................................................. 22
Problem 55: Enhanced oil temperature function not working.
22
Problem 56: Oil Pump Discharge Pressure Sensor Diag-
nostic and Oil Pressure Calibration. Corrective Action.
22
Problem 57: Over/Under Voltage Diagnostic
on Startup. ................................................................. 23
Problem 58: Phase Loss.............................................. 23
Problem 59: Severe Phase Unbalance ........................ 25
Problem 60: Phase Reversal .......................................25
Problem 61: Printer will not work. ............................. 25
Problem 62: Purge Compressor will not run in the man-
ual "ON" mode. ........................................................ 26
Problem 63: Sensor errors .......................................... 26
Problem 64: Transition resistors
stay in too long. ........................................................ 26
Problem 65: Setpoints are not being stored, service tests
will not work and we are calling many diagnostics on
the CLD. ................................................................... 26
Problem 66: Starter Contactor Interrupt Failure Diagnos-
tic when powering up the UCP................................. 27
Problem 67: Starter Dry Run Test Diagnostic upon enter-
ing a Starter Dry Run Test. ....................................... 27
Problem 68: Starter Dry Run will not work. .............. 27
Problem 69: Starter Fault type 1, 2 or 3 ..................... 27
Problem 70: Stepper motor is humming..................... 27
Problem 71: Extended surge....................................... 28
Problem 72: Pressure Transducer shift in calibration. Di-
agnostics will be sensor calibration related such as sen-
sor failure or oil pressure
sensor calibration...................................................... 28
Problem 73: Rapid Time of Day Scrolling or Date jumps
back one day. ............................................................ 28
Problem 74: Unit did not Transition
diagnostics. ............................................................... 28
Problem 75: Tracer Diagnostics e.g.,Tracer loss
of comm with options, starter, etc. as well as
other Tracer related diagnostics. ............................. 29
Problem 76: Unit Tons Read-out on CLD does not
work. ....................................................................... 29
Problem 77: Unknown diagnostics 1217 infor-
mational warning...................................................... 29
CVHE/F/G Trim Balance Procedure ......... 30
Run Procedure: ................................................... 30
Start sequence: ................................................... 30
Stop/Reset sequence .......................................... 30
Sensor And Transducer
Operating Ranges......................................... 31
Temporary Forced Unload Setup............... 32
Communications Test .................................. 33
Troubleshooting IPC Communication
Diagnostics .................................................... 34
For a "No Communication, Data Not Valid"
message on the Clear Language Display: ........ 34
For a "Loss of comm with Stepper"
diagnostic: ........................................................... 34
Heat Sink Temperature ....................................... 35