Author Topic: Tempstar heat pump won't initiate defrost cycle  (Read 10489 times)

Offline lgmccoy1

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Re: Tempstar heat pump won't initiate defrost cycle
« Reply #10 on: December 24, 2010, 11:10:54 AM »
Also I forgot to mention when I first started having all the problems I had switched the programmable indoor thermostat I have with an older one thinking the newer one might have went bad and when it turned out that wasn't the problem I switched them back.  Does anything at the indoor thermostat control the reversing valve?  Because I remember there was one wire that I wasn't sure where it went when I reinstalled the newer tstat.

Offline jumptrout51

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Re: Tempstar heat pump won't initiate defrost cycle
« Reply #11 on: December 24, 2010, 11:38:14 AM »
The indoor stat sends a signal usually on orange(o) to the control board to energize the RV in the cool mode.
On your diagram the orange wire would connect to the r/rv on the board where the other t-stat connections are made.
Because you heard the swoosh sound,your problem is in your mis-connected wires.
« Last Edit: December 24, 2010, 11:43:26 AM by jumptrout51 »
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Offline lgmccoy1

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Re: Tempstar heat pump won't initiate defrost cycle
« Reply #12 on: December 24, 2010, 12:21:16 PM »
Yep fixed it that was the problem.  After looking at my wiring diagram on my control panel I had it connected to the wrong terminal.  Thanks for all your help.  Have a Merry Christmas!

Offline jumptrout51

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Re: Tempstar heat pump won't initiate defrost cycle
« Reply #13 on: December 24, 2010, 12:53:31 PM »
 :cheers: :pint1: :santa_cool:
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