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Discussion Starter · #1 ·
I am new to the forum but I have been trying to troubleshoot my furnace for a while now. Last year I had to replace the exhaust blower I think it is called because the motor burned up and I had no heat since it couldnt pull the fumes out. Now sometimes (although becoming alot more frequent) I have to go to the furnace and turn a (light) switch that is going to the furnace off and back on and it will start right up. I have replaced that switch and still has the same problem. any and all help would be greatly appreciated.
 

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Most furnace have a diognostic light on the curcuit board in the blower compartment. If the door has a peep hole next time it fails count the flashes of light. It can give a direction to start looking in.
 

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Discussion Starter · #7 ·
I checked every single tube coming off the pressure switch and exhaust fan that I saw. I was able to blow through the tubes fine. is there something I need to do to check/clean the switch itself?
 
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