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How long does it stay in the wash cycle? Indefinitely? Does the display continuously show "WASH"?. If it stays in the wash cycle indefinitely (i.e. continuously shows "WASH" for significantly beyond approx. 3 minutes), it's probably a control board malfunction. If it continues to wash after the "WASH" indicator goes out, it could be a shorted wash motor relay on the relay board or a fauly control board.
If the internal rinse water booster heater doesn't reach it's programmed setpoint temperature in time, the dishwasher will run an extended wash cycle to give the booster heater more time to finish heating the rinse water. If this is what's happening, the wash cycle would last approximately 3 minutes, then it would rinse regardless of whether the booster heater has finished heating or not.
The booster temperature thermistor may be bad, giving a false booster temperature reading, causing an extended wash cycle as described above. The booster heater elements or contactor may be bad, preventing the booster heater from heating and reaching proper temperature, also causing the same extended wash cycle to give the booster more time to heat.
What temp is your water? You may need to set your water heater up a notch. Try running the dishwasher on the "sani rinse" since this heats to 160 and see if they are drier. Is your heating element working? During the dry cycle with the heat dry on I would open the door and put my hand next to the element to see if it seemed hot. Maybe it isn't working. Also did you put Jet Dry in the dispenser?and also if the setting is adjustable you can dial it up a notch or two. I also like the Jet Dry Turbo. It makes my dishes dry completly, even plastics and this is on the no heat dry.
If there is no heat, then the heating element may be bad. You can get the part, and view diagram at partselect website.
Sounds like the heating element is not working. Usually the hot water temp is OK for the wash cycle (110 to 140 degrees) but the rinse cycle asks for 140 to 160 which requires the heating element. (As does the dry cycle).
The most common cause of film left behind is a broken heating element.
The heating element is not only used during the dry cycle, but also to raise the water temp. during the main wash cycle to activate the dishwasher detergent. Fixing the heating element should "clear" this problem right up!
145 degree is just your hot water temp and that your dishwasher hot water booster is not working assuming that this machine has worked in the past to produce final rinse water above 180 degrees. Remove the bottom panel and to the right you will see the booster tank, look for a nickel size component with a small red button on it. Try pushing on it to reset it. If that does not work, check for voltage at your heating element on your booster tank. (the thicker wires) If voltage is present then your heating elements need replacing.
Dishwashers do have a heating element that heats up during the dry cycle. Warm next to the d/w is normal. There is usually a switch/cycle that you can use "no heat" drying... just open the door when it finishes rinsing... also saves energy.
Do you have high temp rinse or sanitize selected? This will pause the timer during the final rinse cycle to heat the water. The sensor might be bad. Try the quick cycle, I don't think this heats the water.
The wash tank element should be operated through a 3 or pole contactor which gets its power only when the rinse tank has come up to temp and switched the thermostat over(rinse tank heating takes priority). Is the rinse tank element fully intact ie-is it pulling its full amperage or is part of the element blown causing it to take longer to heat? Is the rinse contactor dropping in when the thermostat for the rinse tank is turned fully down?
It sounds like a thermostat or contactor problem- good luck and let me know how you get on.