Question about Maytag Dishwashers
Replaced circuit board and thermal fuse. no lights on control panel. power to circuit board
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Posted on Jan 02, 2017
SOURCE: Thermal fuse keeps blowing
Mr. Larry (guru?)
The thermal fuse is just that It doesn't protect the circuit from over current although it certainly can open in that case. It is there to protect the board from overheating , thus the term thermal. The dishwasher could be allowing the water to heat too hot or the water heater in the home is turned up too much. The heater could also be shorted to case thus allowing it to be on even though the control is not calling for it especially if the polarity is incorrect to the dishwasher or the relay on the board could be welded closed so that the heater can't turn off even though the thermostat is satisfied. The best thing is to get a person who can check these things. You don't necessarily need to change the board with a fuse. I have changed many fuses with no other problems and verified that the machine was still working years later. sometimes the fuse just blows!
Posted on Jan 27, 2009
Try just replacing the Keypad. It is cheap and is usually the cause. Hope this helps and thank you for using FixYa!
Posted on Mar 30, 2009
If there are no lights on the control panel then initially check if connections to the panel are fine.If they look fine then you definitely need a new control panel.
No need for a new touch panel.Its always that the control panel goes faulty,not the touch panel.
you can also check for competitive rates from local dealers and few sites like--repairclinic.com and applianceparts.com
Posted on Aug 28, 2009
Testimonial: "Thank you so much for the quick and informative answer. It is greatly appreciated. "
These control boards do not have fuses on them. I opened mine up when the front panel touch pad stopped working and the LED indicators were anemic. This is a sign of the ribbon cable connections have oxidized. The ribbon cable connects the touch pad to the control board.
Others have written up nice solutions on similar Maytag diswashers with the touch pad.
The previous expert shows that you can diagnose this by using a 10k resistor and connecting pin 6 and 10 on the ribbon cable connector and it will start the dishwasher (you have to trip the door handle and carefully do this with the power on). This proves that the control board is fine and ribbon cable connections are the problem. Don't forget to quickly trip the door latch once the dishwasher starts.
My solution was to purchase a contact cleaner called Deoxit. You can order from RadioShack.com or get at Frys. Spray Deoxit on both the ribbon cable end (removed) and into the connector on the control board. Deoxit removed the oxide on the connectors. The twin pack Deoxit spray comes with a solution that helps prevent corrosion. I am 1 day into the successful repair of this model Maytag dishwasher.
Previous people have suggested heat and steam get into the control board and oxidize this connector. I notice on the top right where the control board sits, there is a gap to allow steam to get into the door/control board area. I used bathroom caulk to seal both sides of the door to hopefully prevent further corrosion.
Posted on Apr 11, 2010
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