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Blower motor My blower motor doesn't run when the heater is on. I was told it might be a relay but im not sure which one it might be i could use a schematic on the wiring.

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  • steelsmith1 Nov 28, 2008

    The blower does not run at all even set in the on position

  • steelsmith1 Nov 28, 2008

    I found the relay that runs the blower motor. the motor tries to come on but does not turn. I taped on the relay that leads to the motor and the motor started running. So im going to try and find the relay today and see if it works.

  • Ken Bledsoe May 11, 2010

    Does the fan run if you switch the themostat fan setting to run from auto?



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Follow the wires back from the motor to either the relay or the circuit board. normally a furnace has a board. check to see if there is any power leaving relay/board to the mtr. if it is a furnace you may need to push in the door saftey switch to get power to system. heat pump mtrs need 230 vlts furnaces 115vlts. If the power is going through to mtr properly than problem is either capacitor or mtr. capacitor can be checked for you by a local hvac supplier or buy a meter that can check it.
PLEASE rate or solution thanks. Brian S.

Posted on Nov 28, 2008

  • cotillionsor Nov 28, 2008

    if you do as i suggested it will let you know the problem it takes my about 30 seconds to trouble shoot this problem when i show up.

  • cotillionsor Nov 30, 2008

    you can bypass the relay for now. if you take the wire sending high voltage to the relay and the one to the moter cut off the spade connectors(buy some to replace these and wire nut them together the blower should run constantly which will let your heater cycle on and off till you get the relay. make sure to turn the power off! first please!



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