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Old 07-25-2012, 04:22 AM   #16
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heat pump wiring problems


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then you have a bad stat and it is sending a signal on W2 during a call for cooling
Or a bad sequencer that is stuck in the closed position. You'd have to check that with a meter, of course.

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Old 07-25-2012, 06:22 PM   #17
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heat pump wiring problems


I think I have it figured out...bought new Honeywell RTH3100C....
double checked wire at package unit, was thinking something not right with that white and brown tstat wires connected to same white coming from unit...looked around and found the brown...

hooked up per instructions, and seems to be ok now...at least heat strip no on during cooling now...so thats an improvement at least.

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Old 07-26-2012, 04:55 AM   #18
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heat pump wiring problems


Just a note that sometimes the Brown and White wires are tied together, depending on the equipment and stat. Often those are Auxilliary heat and Emergency heat wires, which are essentially the same control. Some manufacturers handle them separately, others just tie them together ...

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