Thread: Anyone in the HVAC industry?
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Old 03-07-2008, 12:04 AM
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Rick Parker Rick Parker is offline
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Default Anyone in the HVAC industry?
I've got an intermitant problem with my home furnace that I'm attempting to fix. The fan motor is attached directly to the squirrel cage without any belts or pulleys. It is a Rheem Highboy unit, '79 vintage combination heater/AC unit. When the burner lights, the heat/cool fan relay clicks signaling the motor to start. The capacitor start motor just "hums" without begining to spin. I can manually give the squirrel cage a nudge and it starts spinning without any unusual noises. Question: assuming the motor itself is OK, do capacitors fail or loose their ability to store energy to provide the bump? In removing it from the unit, what is the correct way to discharge it.

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Last edited by Rick Parker; 03-07-2008 at 12:13 AM..
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