Trane Central Air Unit
Posted 26 August 2006 - 08:35 AM
Posted 26 August 2006 - 12:47 PM
Turn off power to the unit outside and set the tstat to off. Remove the access panel on the heat pump and look for the contactor (image attatched) - see if the contacts are stuck closed. With all power off and no call for cooling they should not be closed. If they are it will be time for a new contactor.
Posted 29 August 2006 - 03:56 PM
The contactor getting stuck closed from the contacts welding is a possibility, but that's usually a one time thing, rather than a recurring problem.
Make sure the wire to the reversing valve (O from the stat and usually orange) isn't tied to the wire to the condenser contactor (Y from the tstst and usually yellow) This is a common shortcut by the guys who don't really know heat pumps, and a quick fix if you have a bad wire. If they are tied together, the condenser will come on when the stat is set to 'cool' event when there is no call for A/C. The condenser will shut off when you set the stat to 'off' or 'heat'
Give that a try.
"The answer is that.......wait...what was the question again?"
Posted 14 September 2006 - 11:37 AM
Posted 15 September 2006 - 01:17 PM
Posted 16 September 2006 - 04:44 AM
Posted 16 September 2006 - 04:55 AM
Posted 16 September 2006 - 06:20 AM
Posted 16 September 2006 - 12:39 PM
Posted 17 September 2006 - 07:15 AM
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