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Trane CVHG Troubleshooting

Trane CVHG
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CVHE-SB-32A 14
Problem 22: Cond. Pressure 2-10 VDC output will not work.
Corrective Action:
1 The Chiller module must be a X-13650450-04 or later. Earlier versions did not support this
option.
2 Check wiring between transducer (located near the purge) and the Circuit module J7.
3 Faulty transducer (See Transducer Checkout procedure).
Problem 23: Condenser Pressure Delta-pressure output does not show up.
Corrective Action:
1 In the service settings menu, enable% condenser.
2 The Circuit module must be X-13650451-10 or greater.
3 The chiller module must be X-13650450-09 or greater.
4 Clear language display must be X-13650448-09 or greater.
Problem 24: Cond. Refrig. Temp. Sensor diagnostic, when the displayed Cond. Refrig.
Temp. is reading fine.
Corrective Action:
1 Chiller software found in X-13650450-01 Rev. D or earlier mis-diagnosed Cond. Refrig.
Press. Replace with new Chiller module.
Problem 25: Condenser and Evaporator entering and leaving water temps. changing rapid-
ly and reading incorrectly, i.e. -25°F to 900°F.
Corrective Action:
1 Bad Chiller module; it must be replaced.
Problem 26: Condenser Water Flow lost diagnostic. Unit will not restart until manually reset.
Corrective Action:
1 Phase A and B Chiller module software were actually an MMR. Phase C (X-13650450-04)
changed to a MAR. Time changed from 3 minutes to 4-1/4 minutes.
Problem 27: Capacity limited by current limit
Corrective Action:
1 Correct overload settings.
2 Check for correct number of turns through the CTs.
3 Starter module ct input bad.
4 Defective CT.
Problem 28: Custom menu - Unwanted items that you did not install and you cannot re-
move.
Corrective Action:
1 The initial problem was if you had installed an option, put it in the Custom menu, then de-

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Trane CVHG Specifications

General IconGeneral
BrandTrane
ModelCVHG
CategoryChiller
LanguageEnglish

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