Question about Carrier XHB123D X/Y Series Heat/Cool Air Conditioner

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Weathermaker 8000 58zav115

Gas comes on heats up heat exchanger, blower starts up runs for a little while then shuts off, but the gas is still being called to the heat exchanger. so you have to manually shut the furnace off because the blower will not come back on. the board has been replaced as well as the motor.

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The technician sould have replaced the circuit board with part number CESO11057-02 which contains a diagnostic LED that will blink out a code when a fault is senced. If not we have to diagnose the hard and costly way, test each circuit.

There are only a limited number of reasons why the blower would stop running, one being a bad blower relay and another being a overheating of the motor inself causing it to shut off on internal overheat. The relay is part of your circuit board and the overheat is inside the motor, both of which you had replaced. Has anyone checked for a restricted air filter or supply/return restriction? Loose wire?

I'm guessing now. Good Luck and let us know what you find.

Posted on Jan 23, 2008

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See if power is supplied to the gas valve if not replace the valve also should have the heat exchanger inspected before any thing else

Posted on Jan 22, 2008


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