CVHE-SB-32A 17
5 If the chiller is in auto and running powered cooling, the chiller will do a normal friendly
shutdown when the FC command is given before going into FC.
6 FC can be terminated from either the front panel, external switch input or Tracer.
7 Enable free cooling in machine configuration menu.
8 Install compatible modules.
9 Connect power and IPC to the options module.
10 Defective Options module.
11 Free cooling actuator.
Problem 36: Evaporator Water Temperatures are reversed (2 pass units only).
Corrective Action:
1 Reverse the sensor leads at the module.
Problem 37: Low Evaporator refrigerant temperature
Corrective action:
1 Defective Stepper module.
2 Missing or incorrect wiring to Stepper module.
3 Defective sensor.
4 Unit charge.
Problem 38: 2F1, 2F2 and 2F3 Fuses blow - On 200-575 volt units when switching the starter
disconnect from OPEN to CLOSED.
Corrective Action:
See Trane manual CVHE-CSB-31
Problem 39: GPM/Tonnage option problems
Corrective action:
1 Correct Flow Coefficients and Exponents settings.
2 Reference Trane service bulletin CHVE-CSB-45C. For upgrade modifications, CLD X-
13650782-01 or newer is required to see all new screens. Updated chiller module X-
13650450-15 or newer is required.
3 Install GPM/tonnage option in machine configuration.
4 Debris in the strainers.
5 Defective transducer.
6 Defective Chiller module.
7 Automatic calibration performed.
Problem 40: High Vacuum Lockout
Corrective action:
1 Select correct refrigerant type in machine configuration.
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