Compressor and condenser fan turning off mid cycle


  #1  
Old 05-20-24, 01:55 PM
J
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Compressor and condenser fan turning off mid cycle

I have a goodman package unit, ac only.the problem is the compressor and condenser fan will turn off mid cycle while the thermostat is still calling for cool, evaporator fan still runs. Ac could work all day without issue or act up minutes after turning on. Very intermittent. Have changed capacitor and thermostat but problem remains, will be changing the contactor and transformer when they arrive in a few days. Air temp at vent is 60 degrees and no signs of refrigerant leak so levels are probably good. Would appreciate any advice on what could be wrong.
 
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Old 05-20-24, 05:40 PM
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Welcome to the forum.

It can get quite expensive throwing parts at a unit and hoping for repair.
You cannot see a refrigerant leak.
If your system gets low on charge it may cycle based on low pressure.

You need to locate where the wiring connects from the house to the packaged unit.
It's typically where the high voltage connects.
You need to check for 24vac on the Y (yellow) wire and the C wire.
You want to confirm power here when the compressor shuts done.
If it's still there then the problem is inside the unit.

Please read first for A/C repair
 
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Old 05-23-24, 08:02 AM
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Unit doesnt have common wire, just red (24v), yellow(compressor) and green (fan)
 
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Old 05-23-24, 08:54 AM
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There are two wires at the outside condenser where you need to be checking..... Y and C.
 
 

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