Question about Heating & Cooling
The furnace goes through it's process...the last being the blower coming on. However, the blower isn't kicking on. Sometimes if I turn it off and on at the thermostat, I can get it to re-cyle and then the blower will come on. It's sporadic, but it's happening more frequently. I temporarily remedied the situation by turning my blower to the on mode, as opposed to the auto mode. But I hate to run the blower all the time. Any ideas? Thank you!
My guess is the FAN RELAY has loose contacts in it Trace the wires from the motor to where they tie in 1 will go to the power cord (this in L2 or Nut) The other 1 or 2 wires will go to a fan swich/relay or a rotary hi limit fan acutator sw. This rotary fan sw has a lot of cousins. On some Carrier Bryant Paynes and or Day Night furnaces that are over 20 years old the fan switch is a small rectangular cube with a seperate heater inclosed in the rectangular box. This fan sw could also be your problem but Im betting on the fan relay. It usually Click when you turn the Fan from auto to on. And the wire G goes to it (eventually)from the thermostat. CHeck this when its acting up. You could jump around the relay going from the L1 feed on the relay to the Closed motor speed.
I doubt you have a bad fan motor. But I could be wrong. Usually they have a smell associated with a bad one and you dont mention this.
Posted on Mar 02, 2009
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Posted on Jan 02, 2017
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