Question about Carrier 38CKC042 Air Conditioner

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Problem with carrier heat pump

I have a problem with my carrier heat pump. The unit will not change from ac to heat. Not sure what to do. Any suggestions will be appreciated.

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  • cvs48841774 Dec 11, 2008

    Thanks. Works like a champ.

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Check the relays on the main board of your blower/furnace. If one is stuck, then the unit will not change from ac to heat. You may need to replace the entire board.

Posted on Dec 11, 2008

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There are a couple of things to check, with someone by airhandler turn t-stat on to call for heat you should hear the relay switch on if you don't replace jumper wires from t-stat to manualy turn on if that workes replace t-stat

Posted on Jan 10, 2009

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1 Answer

My(38ycc030340)carrier heat Pump ac unit blows 5 amp fuse on board in handler in attic when switch stat to heat.


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1 Answer

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Since you are an AC tech you have probably already checked for stuck relay(s) My experience has been with AC units but not heat pumps-so I am only making a practical guess.

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1 Answer

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Hi,
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The problem could be the reversing valve or the t-stat...those are the most common problems for them not heating if the cooling still works..

heatman101

Jul 14, 2011 | Carrier Air Conditioners

2 Answers

Carrier 38CKC042300. oUTSIDE UNIT FAN WAS TURNING REAL SLOW. ac UNIT IS OFF BUT FAN TO OUTSIDE UNIT IS STILL TURNING. sHOULD NOT BE TURNING AT ALL WITH AC UNIT OFF


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1 Answer

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