trane xb1000 freeze up with condenser fan constantly running

Old 06-04-14, 08:25 PM
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trane xb1000 freeze up with condenser fan constantly running

a/c blows cold air in house but the outside condenser fan constantly runs and the line freezes up.. Changed motor fan and capacitor. The fan turns on and stays on when I turn on the breaker
Old 06-04-14, 08:44 PM
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Welcome to the forums.

Do you know what/where the contactor is inside the compressor unit ?
The contactor closes when the thermostat calls for A/C. Either the thermostat is defective and doesn't stop calling for A/C or the contactor is welded in the on position. Does the inside blower come on and off with the call for A/C ?

The picture below is a representative contactor. You can turn the power off to your compressor unit and visually inspect the contactor for black contacts or arced contacts.

Name:  contactor check.jpg
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