If your dishwasher isn’t working properly, you may need to perform some repairs to restore operation. Some dishwasher repairs are simple and can be done by you, while others require the services of a professional repair person. Whether you should hire a professional depends on a few factors, including your comfort level with DIY projects and your budget. If you’re unsure, start with the simpler problems first.
Water Leaks
Most dishwashers use a gasket to seal the door frame, so if you see any leaks around the door, inspect the gasket for cracks or other damage. If the gasket looks brittle or worn, you may need to replace it. You can buy a new door gasket at an appliance parts store, and follow the instructions on the label to install it. Make sure the new gasket fits snugly against the door frame. If it does, tighten the retaining screws and refit the gasket in the clips or door channel. Run the machine through a washing cycle to ensure the new gasket is sealing properly.
Bad Latch
If the door won’t open or close, the latch is probably faulty. Adjusting the latch plate centered at the top of the frame should solve the problem, or you may need to replace the latch. Some latch plates can be repositioned by turning them in small increments and testing the latch’s fit with a finger before readjusting it. If the latch is repositioned correctly, it should close and latch when you turn on the dishwasher.
Faulty Timer and Control Switch
A faulty timer or control switch can prevent your dishwasher from starting or operating properly. Check the timing switch by examining the wiring hookup; if it’s too complicated to diagnose, you may need to call in a professional.
Motor Start Relay
If you can’t fix the timer or control switch, check the motor start relay for continuity. This is located near the pump, behind the lower access panel of most dishwashers. If you can’t find it, use a multimeter to test the relay coil.
Draining Dishes
If your dishwasher drains only partially or stops altogether, you may have a clogged drain line or drain valve. Check the inlet valves and the drain valves for blockages, as well as any flexible hoses or connections to the disposer or dishwasher. If these areas are clear, clean the hoses or the drain lines and replace any damaged hose clamps or fittings.
Float Switch
If the dishes still don’t drain after cleaning the clogs, you may need to replace the float switch in the pump. Some models have a cover over the float switch that you can remove to reach it; follow the steps in your dishwasher’s owner’s manual to access and replace this part.
Racks
The racks that hold the dishes are made of steel, coated in a coating of plastic to help them resist scratches. Many of these racks are molded in-house, but some are manufactured by suppliers to the manufacturer’s specifications.
