Question about Heating & Cooling
The problem you're facing here could quite possibly be more than just replacing a motor. You could have circuit damage which may be the reason that the furnace quit working. You can try testing the fan that is currently installed. Make sure it is working first before buying new parts. Determine the required voltage for your fan and supply that voltage to it momentarily. Do this while the fan is completely isolated from your furnace (unplug any leads from it to the furnace controllerboard) You may want to get assistance when working with electrical current so you don't accidentally cause harm to yourself and/or your furnace.
Posted on Mar 13, 2011
Generally if the motor has a bad burnt smell it has shorted. Does the wheel spin freely? If it doesn't then a bearing in the motor seized and overheated the windings in the motor. Most likely it would be finished. If the wheel spins freely then you might be lucky and just have bad capacitor. It helps the motor run. You could try letting the motor cool if it's hot by shutting the power off. Then when it is cool turn power back on with the fan switch on the thermostat in the on position. If your furnace has door switch push it in and spin the wheel with your hand quickly. If the motor works the capacitor is probably at fault.
Posted on Mar 21, 2011
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Posted on Jan 02, 2017
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