Author Topic: Gibson Heatpump  (Read 2639 times)

Offline jdman

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Gibson Heatpump
« on: November 30, 2010, 07:43:50 PM »
Gibson heatpump will run in cooling but not in heating. Have to switch to EM heat. Not getting 24V to contactor in heating mode. What to check?

Offline JWWebster

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Re: Gibson Heatpump
« Reply #1 on: November 30, 2010, 08:49:29 PM »
That would have to be in the wall thermostat I would say. You getting 24 volts out there on the cooling side?
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Offline jumptrout51

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Re: Gibson Heatpump
« Reply #2 on: December 01, 2010, 06:36:02 AM »
A heat pump sends power to the condenser on "Y" (yellow) wire in heat or cool.
Since your cool setting brings on the compressor your problem is in your thermostat.
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