copperhead Posted February 4, 2014 Report Share Posted February 4, 2014 I've got a smallish Intertherm furnace in my house. It will occasionally fail to start the small motor that exhausts any fumes before igniting. The inducer motor? Draft motor? Either way, I've replaced that motor twice now for the same thing so I'm pretty confident it isn't the problem. When it fails to start it puts the control board into lockout. I flip off the thermostat, spin the shaft in the motor, turn the thermostat back on and it fires up fine. It will go weeks between doing this, or it will happen a couple times a day. It's happened the last couple winters and I'm not sure what could be causing it. I don't believe there are any capacitors between the control board and that motor, so should I replace the control board? Or should I look at something else? It's so inconsistent that I don't see how checking voltage is going to get me anywhere. Quote Link to comment Share on other sites More sharing options...
JaSSon Posted February 4, 2014 Report Share Posted February 4, 2014 Can you add a startup capacitor to the motor? Quote Link to comment Share on other sites More sharing options...
Green Bastard Posted February 4, 2014 Report Share Posted February 4, 2014 If the motor was designed to run without a capacitor then you should not have to add one. It sounds to me like you need a motor from a better manufacturer. Quote Link to comment Share on other sites More sharing options...
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