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Dishwasher won't start; start button blinks 3 times then turns off

My Whirlpool dishwasher (WDF520PADM7, about 6 years old) will not start. I press the start button, it blinks 3 times, then turns off. I have turned off the circuit breaker for 10 minutes or so, hoping this will reset the machine, but no change. I have run the 123-123-123 diagnostic, all the lights on the control panel light up, but the machine does not run through the testing protocol. I have checked the latch and it seems to be a tight fit. The control lock is not on. Do you have any suggestions as to what else I can try for a DIY fix? Thank you.

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Gepost: 12 jan. 2026

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Hi @anita47514

The door latch might be tight but this doesn't mean that the door latch switch is working OK electrically.

If you have a DMM (digital multimeter) you could disconnect the power to the dishwasher and then access the door latch and use the meter's Ommeter function to check if the latch switch is working OK electrically or not..

Here's a video that shows how to access the latch assembly that will help.

On p.4 of the tech sheet there's a strip diagram showing the door switch circuit.

If the switch is faulty search online for WPW10653840 to find suppliers that suit you best. (examples only)

Secures the dishwasher door in a closed position during operation. Afbeelding

Product

Whirlpool Dishwasher Door Latch Assembly - WPW10653840

$25.99

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Whirlpool Dishwasher

Dishwasher won't start; start button blinks 3 times then turns off

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Whirlpool Dishwasher Door Latch Assembly - WPW10653840

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