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How to Test the Dryer Fan

When the final rinse and drain cycle has completed the drying fan may start, depending upon which cycle was selected. If the drying fan does not start, it can result in slower drying and possibly increased water spotting on glasses.

Caution: Please read our safety information before attempting any testing or repairs.

Before testing the drying fan, unplug the dishwasher or shut off the power at the fuse box or breaker panel to avoid an electrical shock hazard.

To access the drying fan, remove the lower panel located beneath the door. The panel is usually held in place with two screws either above or below the panel. It may be necessary to first open the door to the dishwasher to reach the screws over the panel, then close the door to remove the panel.

Note the location of the fan hood inside the dishwasher's tub (usually back right or left) and you will find the dryer fan beneath it in the access area. The fan motor has two wires connected to it. Label the wires and connections so that you can properly reconnect them later. The wires are connected with slip on connectors. Firmly pull the connectors off of the terminals (do not pull on the wire itself). You may need to use a pair of needle-nose pliers to remove the connectors. Inspect the connectors and the terminals for corrosion. If either is corroded they should be cleaned or replaced.

Use a continuity tester or multitester to test for continuity. Set the multitester to the ohms setting X1. Touch one probe to each terminal. You should get a reading of zero.

If the fan fails this test, it should be replaced.




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