Question about Heating & Cooling
I have a Trane air handler model #TWV036B140A The fan on my air handler will not shut off no matter what setting I put the thermostat on.
We have tested voltage to the FDR and all is well.
We removed the voltage to the coil of the FDR and the fan stopped.
We then removed the green wire for the terminal strip and waited for a timed period and the fan did not stop.
I wish to confirm that the PCB is at fault and should be replaced or is there more trouble shooting I can do to run down the problem?
Sounds like you have a bad fan relay, the fan should shut of within 30 to 120 seconds after t-stat is satsified.
Posted on Apr 25, 2009
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Posted on Jan 02, 2017
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