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If I could swap out the burner & ignition system for a higher efficiency unit that would be fine. If I had to replace the whole standing unit that would be impractical. Just getting a new unit in... |
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Thanks for your reply. It was indeed the fan motor, which I diagnosed without any help from APP. BTW, are you an appliancepartspro employee ? For anyone else who gets down this path; At some point... |
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I am going through a similar furnace fan motor replacement problem right now. The motor happens to be a Westinghouse, 5.6 inch diameter #48 frame, 3 speed, 115 volt, 1/5 HP, etc. It too has 4 wires,... |
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Yesterday I replaced the (combination) fan and limit control. No change. Today I tore apart some flue sections to see if there were any blockages, dead squirrels, etc. Not much soot for 35 years,... |
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On the idea that the thermostat might have been failing to hold the fan relay on, I disconnected the thermostat and shorted the red and white wires together. This simulated the original... |
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I removed the filter temporarily to eliminate the possibility that it is blocking air flow. This made no difference. |
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This furnace is about 35 years old, original equipment, it came with the house. The thermostat is a lot more recent, the gas valve thermocouple was replaced a couple of years ago. SYMPTOMS: The... |
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Join Date: 03-06-2008
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