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The heat pump is not working properly. i think the problem is in the switch mechanism. when the heat is on and the thermostat is turned up it blows cold air. sometimes the compressor turns on and off. if you turn the other switch to the off position, then turn the thermostat up then turn it back to heat. it will blow hot air. if you then turn the thermostat down, wait till it turns off, then turn it back up, it will blow room temp air and sometimes the compressor will turn on.

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Hi,
The problem may be the switch, but it sounds more likely that the contactor in the outdoor unit is bad and is not making all of the time...then the compressor will not always run...
To figure it out you will need to catch it at a time when it does not owrk and then follow the electric back till you find out why there is no power...
It would be best to have an electrical meter and have this done by an experience person so that you do not get shocked...

heatman101

Posted on Jan 03, 2011

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