Quote:
Originally Posted by mtdjed
re the condensate drain- There is a sensor that is plugged into the air handler. When the drain backs up, the condensate works it way back into the air handler and will shut the unit down. If that were the problem , I would pull the sensor and if backup condensate is the issue, it would drain and the unit would work. But the drain would still be backed up,and need to be cleared.
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The thermostat should be blank if the condensate switch is activated.
Motor start capacitor's have been a common failure item on recent Carrier systems.