Question about Kenmore Dishwashers
Keeps blowing thermal fuse
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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
SOURCE: thermal fuse has blown 2 times
Check for a bad ground wire. Also while you are check the ground check all the other wires to make sure that they are seated properly and nothing has come lose or te wire plastic has come off or rubbed off and grounding itself out
Posted on Feb 21, 2009
The first thing I would inspect is the heating element for damage that may beginning to short out.
If the element checks out good, a failing motor could blow the fuse.
If the motor checks out, look for shorts in the wiring both in the door and under the unit.
It is hard to be more specific without knowing the make & model and the dishwashers approximate age (years.)
Good Luck! Please report back what you found, OK?
Posted on May 26, 2009
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