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Whirlpool dishwasher start button not working: what to check

You press Start on your Whirlpool dishwasher and nothing happens, or the lights come on but the cycle won’t run. This page walks through the safe checks first, then the parts a technician tests when the Start key or run circuit has failed.

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Straight answer

A Whirlpool dishwasher start button that doesn't work means the control isn't accepting a start command, either because a setting is blocking it or the door/start circuit isn't proving closed. The single most common repair cause is a door latch switch that doesn't close cleanly, although Control Lock is the first thing to rule out before calling a technician.

Check these first

Safe to do yourself. Unplug the appliance before you start.

  1. Turn off Control Lock

    Look for a lock light or a light that flashes when you press buttons. Press and hold the Lock button for 3 seconds, then try Start again.

  2. Wake the control

    Some Whirlpool dishwashers go into sleep or standby mode. Open and close the door, then press Start/Resume or Cancel to wake the panel.

  3. Cancel Delay Wash

    If Delay is selected, the dishwasher may look ready but wait instead of starting. Press the Delay button again until the delay light or countdown turns off, then press Start/Resume within 30 seconds.

  4. Check the door latch and lower rack

    Push the door closed until it latches, then press Start. If the lower rack is backward or a utensil is sticking out, the door can look closed while the latch switch stays open.

  5. Reset power at the breaker

    Most built-in dishwashers are hardwired, so use the breaker rather than looking for a plug. Turn the dishwasher breaker off for a few seconds, turn it on, then wait for the control to wake up.

  6. Confirm the water valve is open

    Open the sink cabinet and find the dishwasher water valve on the metal supply line. Turn the knob counterclockwise until it stops, since a closed valve can keep some models from starting properly.

When it's a repair

If those checks don't get it running, a technician usually tests the door latch switch first, then the user interface keypad, the thermal fuse on electronic-control models, and the main control. If the dishwasher starts, fills, opens the soap cup, then sits silent with dirty dishes, the wash motor or sump and motor assembly moves higher on the list. A newer Whirlpool in good shape is usually worth diagnosing. At about ten years old, a basic plastic-tub unit with a failed control plus a weak wash motor is often a poor repair choice.

Models where this shows up most

This start or no-wash complaint shows up in reports on Whirlpool Gold dishwashers, including WDT710 family machines. WDF520 and WDT730 families are also commonly discussed for fill-with-no-spray complaints.

Worth knowing

Conditions that make this more likely

Boards fail earlier in hot rooms

Electronics are rated for room temperature. In a garage or an unconditioned laundry room in summer, a control board can sit well above that for hours a day. Before replacing a board, a good technician confirms the parts it controls test good, since a shorted pump or valve can take out a new board too.

Inlet screens clog quietly

The small mesh screens where the hoses meet the machine catch sediment and scale. On hard water or an older supply line, a screen can block enough within a few years to trigger a fill error. Cleaning them is a common fix.

What a technician tests

Most likely part first. These are for a technician with a meter and the tech sheet, not a weekend project.

PartHow it's tested
Door latch assemblyWith power off, the technician opens the inner door, verifies the strike fully trips the latch switches, then meters the switch contacts. A closed switch should read zero or nearly zero ohms; a higher or open reading means the control never sees the door as latched.
User interface keypadThe tech checks for a stuck-key fault in diagnostics, then tests the Start key response at the console. On some Whirlpool Gold panels the small copper dome under the Start pad flattens out, so the button feels normal but the board never sees the press.
Thermal fuseOn electronic-control models, the fuse sits near the control board with two wires attached. With power off, it should show continuity, zero or nearly zero ohms; an open fuse leaves the control dead or unable to start.
Electronic control or timerIf the door switch and fuse test good, the technician checks whether the control starts the first drain step and sends power to the next load in the cycle. On manual timer models, timer contacts may be checked against the wiring diagram; some working timers read in the 2000 to 3500 ohm range, but the correct reading depends on the model.
Wash motor and sump assemblyUse this test when the dishwasher accepts Start, fills with water, and the timer moves, yet there is no spray sound. These Whirlpool designs can keep advancing because there is no motor feedback circuit, so a weak motor connection under load can leave warm water in the tub and dirty dishes at the end.

Don't see your symptom?

Describe it on the phone. The company on the other end works on these every day and will know what to ask.

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Common questions about appliance repair

How do I reset a Whirlpool dishwasher that won’t start?

Turn the dishwasher breaker off for a few seconds, then turn it back on. If the problem comes right back, the reset did not fix the cause.

Why do the lights work but Start won’t run the dishwasher?

That points away from a house power issue and toward Control Lock, Delay Wash, a door latch switch, or a failed Start key on the user interface. Start with the lock and delay settings before calling for service.

Can a bad door latch make the Start button seem dead?

Yes. If the latch switch doesn't close, the control may light up but refuse to start the cycle because it thinks the door is open.

Is this different on hidden-control Whirlpool dishwashers?

The checks are the same, but the controls are on the upper door edge. Close the door promptly after pressing Start/Resume, since some models expect the door to be closed within a short time.

Should I check the warranty before repair?

Yes. Check the model and serial tag on the tub edge, then review the product warranty before approving a paid repair.

Still showing the problem after the checks?

Call and describe what you tried. You'll be connected with an independent repair company near you.

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