Hello, I own a Kenmore dishwasher, model 665.1677580 and the detergent door won't open to release the soap. The detergent cup and door are clean, the dish rack doesn't interfere and the door uses a bimetal switch. Any tips on how to test the switch or a timer?
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Whirlpool dishwashers use a wax motor or a solinoid to release the door at a specific time during the cycle. So for proper cleaning the soap cup is nessesary . The part isn't that expensive and fairly simple repair.
Hello laura.... there are three possible causes of the dispenser not opening:
1.Timer On many dishwashers, a plastic actuator arm mechanically links the timer to the detergent cup. When the timer reaches the proper time in the cycle, the timer activates a lever that opens the detergent cup. If the linkage is broken or defective, the cup stays closed after you've closed it. Check the link and repair or replace it, as necessary. 2. Bi-metal switch or wax motorA bi-metal switch is a simple electrical device that deforms when electricity is applied to it. The degree of this deformation can be engineered to concise standards. The timer energizes the bi-metal switch inside your dishwasher door--directly behind the detergent cup--when the detergent cup should open. When energized, the bi-metal switch deforms away from the detergent cup latch, which opens the detergent cup. If the bi-metal switch is defective, it may not deform enough to open the cup. If that happens, you need to replace it.On some dishwashers, the bimetal switch is wired through the heating element or motor circuit. If the element is broken (or open), or if the motor is drawing low current because of a low-fill situation, the bi-metal switch doesn't open properly.Newer dishwasher models use a wax motor instead of a bi-metal switch. It's a sealed unit with wax that heats up and pushes a piston through to open the door. The wax motor, controlled by the timer, mechanically opens the door. 3. Detergent cup, itselfThe detergent cup itself can become clogged with old dried detergent that prevents it from opening. Sometimes just cleaning the cup takes care of the problem. If not, you probably need to replace the entire cup assemblyThat said, one way around this is to simply add the soap or the soap tab into the dishwasher proper, not into the cup. JoeThanks for choosing Fixya!
Detergent cup, itselfThe
detergent cup itself can become clogged with old dried detergent that
prevents it from opening. Sometimes just cleaning the cup takes care of
the problem. If not, you probably need to replace the entire cup
assembly try cleaning it out with hot soapy water make sur its releasing freely ..Hope this helps if not let me know
Most detergent cups are spring loaded and released by either a mechanical trip or by a bi-metal strip latch. If your model is a simple dial timer type, look for a mechanical linkage between the timer and detergent cover. If it is a touch panel control, look for the other type. The bi-metal strip type has a heating wire wraped around it that can open electrically or burn out physically.
Mechanical types can be checked by rotating the timer knob 360 degrees while watching the detergent cover linkage. Electrical types require use of an ohm meter to check the resistance of the heating element on the bi-metal strip.
If you are using powder type detergent, make sure it is not caked when added to the cup or it can jam the rotating type covers.
The detergent cup itself can become clogged with old dried detergent that prevents it from opening. Sometimes just cleaning the cup takes care of the problem.
In case it will not solve your problem, the unit should be replaced.