air handler transformer keeps blowing!!! - Appliance Repair Forum

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Model: CARRIER AQ40 AIR HANDLER	Brand: -brand-	Age: More than 10 years
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jonzo		#1 Posted : Sunday, January 23, 2011 11:55:20 AM(UTC)
Rank: Member Groups: Registered Joined: 9/30/2010(UTC) Posts: 13		HELP!!!! I've pulling me hair out!!!! Original prob was air handler lost 24 volt output. I replaced transformer with a slightly undersized one....40va instead of the spec'd 60va......and it ran for about 10 mins..then blew. Now I put in a new 75va transformer...and it ran fo 10 mins or so..and then blew. I did check the wiring on the heat pump outside to see if any insulation had melted, creating a possible short circuit...but all seemed fine. Any ideas anyone? Thanks to all!!!!


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jonzo		#2 Posted : Monday, January 24, 2011 5:45:05 PM(UTC)
Rank: Member Groups: Registered Joined: 9/30/2010(UTC) Posts: 13		Hey all! I did find a wire to metal contact inside the heat pump outdoors..so i fixed that and all seems to be running fine...except a spark arced inside the heat pump that MIGHT have damaged something else now!


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