Air Fan - http://www.hvacmechanic.com/ Forums
Original message
| mo1715
 |  "Air Fan"
, posted Sun 8 Jun 20:33  
I have a Tempstar model "N9MP1 or 2" that is about 5 years old. The Blower motor doesn’t turn on when you turn on the air conditioner from the thermostat or when you switch the thermostat to "Fan on". You get a humming sound that comes from something that looks like a small transformer inside the unit. Outside the unit turns on with no problems. I turned on the heater to see if it would work and it works fine, cycles as is should. Any Ideas??
Matt
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Replies:
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| yuri
| "Re(1):Air Fan" , posted Sun 8 Jun 21:29
Probably the fan relay which is a part of the circuit board is faulty. Not user replaceable unless you are an electronics tech. Need a tech to verify the correct wiring and replace the board if necessary.
Yuri
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