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WHEN TERMOSTAT IS IN AUTO POSITION THE HEAT OR AC WILL START BUT THE FAN WII NOT RUN. THE FAN WILL RUN IN THE ON POSITION.

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You either have a wrong connection or a defective thermostat.

the fan when switch to auto will run as the heater or ac is running and when in the "on " position, it will always run.

there is a problem in the connection of the cool or heat contact to the fan relay that is why it is not running if you place it on auto.

trace the diagram of the thermostat and you would know where the problem is...

i hope i ws able to solve ur problem..

pls rate me

tnx 4 using fixya..

drcool




Posted on Jul 23, 2008

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I am new to a heat pump. The thermostat has an 'auto' setting and an 'on' setting. I am confused as to which one to use for heat. Can you help me?


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Amana ptac during heat mode will blow hot air , then blow cold , but will cycle back to heat eventually is this Normal?


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On ac the fan will not turn on.


Hello, jump the rgy wires togethur at the thermostat subbase and let me know if it starts up. If it does the termostat is bad, if not the relay on the intergrated control bad is bad and must be replaced.

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To turn on the air conditioner, on the thermostat do you click it to Auto and then on the other side click to Cool? Or do you click on Fan and Cool?


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I have a springdale travel trailer with a dometic ac system. When I turn the air on, with the fan in the auto position on the thermostst, the compressor turns on and runs, but the fan does not. The...


Neither.
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