Air Conditioning - Blower motor problem only when A/C compressor is on.

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NikoTes
05-07-08, 02:22 PM
Problem:

Blower motor is not a constant speed when A/C compressor is on. You can hear the blower motor try to turn off.

Blower motor is fine when switched to on position and A/C is off.

Blower motor is fine when heat is on.

Installed a new t-stat and it did not work.

Motor and cap were replaced last year.

Any ideas? Thanks...