Question about Heating & Cooling
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..
Posted on Jul 23, 2008
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Posted on Jan 02, 2017
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