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Thread: Blown thermal fuse

  1. #1

    Blown thermal fuse

    Model Number: DU1101XTPB1
    Brand: Whirlpool
    Age: 1-5 years

    My dishwasher was making a lot of noise and finally quit. I checked the thermal fuses and door switches and they were fine. I replaced the wash pump assembly and this fixed the noise problem. It ran one cycle through ok (we think). Two day later the control panel would not light up at all. I tested the thermal fuse again and it was blown. What would be the problem? Could it be the new pump assembly was defective or some other problem?: confused:

  2. #2
    Admin/Technician Doc Ryan's Avatar
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    Trying to diagnose why a thermal fuse blew can be very difficult. It's possible that the new pump is defective, but I would think that if it was the circulation pump that caused the fuse to blow, that the dishwasher would have stopped with water still sitting in the bottom of the dishwasher. If the fuse blew while the dishwasher wasn't running, then it could have been caused by a power surge or a control board failure.
    Ryan

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  3. #3
    It must have not completed the complete first time through because there is atleast 1" of water still standing in the bottom. From what you are saying the new pump is defective.
    Thanks for you time.

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