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Furnace/AC blower motor does not turn on consistently
The blower motor is a belt drive 1/2 HP 115V motor with start capacitor attached to a squirrel cage air handler. It does not consistently turn on in the auto mode and has to be cycled a couple of times in the manual mode to get it to turn over. I have checked for free turning of squirrel cage air handler and motor separately and found no problem. I have replaced the start capacitor with no change in results. I have it running in the continuous "on" mode.
The problem occurs when actuated from the thermostat, the emergency switch at the furnace or the "manual/auto" setting on the furnace heat switch. The furnace is an old "Mueller Climatrol" furnace with a A/C evaporator. Any other suggestions? |
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