Issue:
Evaporator Refrigerant Drain...Circuit 1
Evaporator Refrigerant Drain...Circuit 2
Resolution:
RTAC Remote Evaporator : This diagnostic is effective only with Remote Evaporator units. The liquid level of the respective evaporator was not seen to be below the level of -21.2 mm (-0.83 in.) within 5 minutes of the commanded opening of its Drain Valve Solenoid. The diagnostic will not be active if the drain valve is commanded closed.
- Verify the 7U3 is installed.
- Verify the 7U3 is wired correctly.
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Verify the associated solenoid valves are wired correctly (73L9 & 74L9).
- 73L7 & 74L7 are the Oil Return Solenoid valves; make sure they are wired to the correct LLID (7U4).
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Verify the 7U3 and 7U4 LLIDs are bound correctly and are referring to the correct device/function.
- 7U3 and 7U4 may be crossed or misbound.
- 7U3 - Evaporator Refrigerant Drain Valve Control Module
- 7U4 - Evaporator Oil Return Valve Control Module
Notes:
Changes:
Other Question/Problem/Cause Statements:
- Evaporator Refrigerant Drain...Circuit 1?
- Evaporator Refrigerant Drain...Circuit 2?
- Facts:
- RTAC
- Air-Cooled Chiller (Pueblo) (RTAC)
Document Identifier: DOC-96372
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.