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#1 |
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Junior Member
Trade: plumbing/electrical
Join Date: Nov 2012
Posts: 1
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ducane model mpga075b3b
had blower motor replaced per hvac contractor. did not solve problem. demand on motor but it hums. old motor bench tested okay. what tells motor to fire up. stat is okay. furnace fires up but shuts down when motor does not start
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#2 |
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Banned
Trade: HVAC DDC Controls
Join Date: Oct 2012
Location: AZ
Posts: 7
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Re: ducane model mpga075b3b
There should be a fan relay of fan contactor that energizes the fan motor. There may be a issue with the fan relay.
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ducane, model, mpga075b3b ![]() |
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