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Air handler will not run clogged up drain?

The air handler will not turn on unless some kind of drain switch is removed, how do yu access the air handler to clear the clogged drain tube?

Posted by rlp29 on


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The air handler is in the attic or in a closet right? most likely the drain switch mentioned is in a pan located underneath the air handler, the switch is actuated when the condensation drain tube is clogged, ( when it cannot drain the water out of the pan), the float switch is actuated and the unit shuts off to prevent any more condensation, thus preventing overflow into your house/apt. the drain line can be sucked out by using a simple wet/dry vacuum of any kind from the end of the drain line ( usually a 3/4 inch PVC pipe located somewhere outside ).

Posted on Aug 14, 2008


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