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My fan motor runs to slow and needs to be speeded up. The fan motor has been changed to a A O Smith. Air conditioner is a Goodman 3 ton.

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AO Smith motor speeds are Red low Blue med. And black high. Just unplug from fan switch plug in new speed. Turn power of first. Rus

Posted on Jun 18, 2009

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1 Answer

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Your main concern is the temperature difference across the indoor coil for both heating and cooling. When you turn your thermostat from auto to on, you are on high speed.

If you have long duct runs and little return air registers then high speed
would help cool the house better. However in the heating mode, you
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What they installed is sized for your house and the speeds should not have to be changed unless the ductwork is not sized right for the house.
Cooling should be High-Black wire.
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1 Answer

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Shastalaker7
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1 Answer

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