CVHE-SB-32A 26
~ Diagnostic LED (Red) is OFF
~ Check DIP switches, they should be OFF-OFF-ON
~ RxB (Green LED near J3) is printer receive and should be OFF
~ TxB (Red LED near J3) is printer transmit and blinks only when printing
5 Check the printer cable. Usually a 9-25 pin cable with RX (receive) to Rx, and Tx (transmit) to
Tx connections.
6 Try to print manually (in Operator Settings menu).
Problem 62: Purge Compressor will not run in the manual “ON” mode.
Corrective Action:
1 In the Operator Setting menu, select “ON” for Purge Operating Mode. Note that “ON” means
that the purge compressor and condenser fan will run. The pumpout motor will run only when
the Purge Suction temperature gets below 18°F and turns off when the temperature gets
above 22°F.
2 If you get “Purge Pumpout Rate Exceeded” message then go to the Service Settings menu,
go to Field Startup Group and set “Purge Service Excessive Pumpout Outride Timer” to the
amount of time you would like the pump-out motor to run without it incrementing the pumpout
rate. The maximum allowed time is 72 hours. When this time is reached, you will get the “Max
Pumpout Rate Exceeded” message.
3 Clear all purge diagnostics.
Problem 63: Sensor errors
You may get sensor errors such as: evaporator water temperature, condenser
water temperature, outdoor air temperature, condenser or evaporator refrigerant
temperature sensor.,motor temperature, discharge temperature, oil temperature
or purge suction temperature.
Corrective Action:
1 Check sensor installation.
2 Replace sensor.
3 Check all sensor wiring and connections. Depending on the sensor and which module it
connects to, you may have a bad module such as the Chiller, Stepper Circuit Or Purge.
Problem 64: Transition resistors stay in too long.
Corrective Action:
1 If the J8 terminal on the Starter module is loose, the control does not latch in and extends the
timing keeping the resistors in longer. Reference Trane Service Bulletin CVHE-CSB-35.
Problem 65: Setpoints are not being stored, service tests will not work and we are calling
many diagnostics on the CLD.
Corrective Action:
1 IPC to Starter module disconnected or reversed.
2 Starter module not powered up.
3 One wire of the IPC is not connected.
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