XT Appliances · Warren
Dishwasher won't start or stops mid-cycle
Most often the door latch isn't telling the control the door is shut, and a completely dark panel means a power problem instead.
When you press start, the control board checks a few things before it lets any water in. Besides power, it wants two signals: the door latch switch reporting the door shut, and the anti-flood float under the tub reporting a dry pan. If any of that is missing, the cycle never begins. What the panel does when you press start narrows it down fast.
What the panel tells you
A completely dark panel, with no lights and no beep, means power isn't reaching the board. Start at the breaker. If the breaker is on, the cause is usually a loose connection where the dishwasher is wired in under the counter or a blown thermal fuse inside, and neither is a homeowner job.
A panel that lights up but won't run, often with a flashing start or door light, points at the door latch. The latch can look closed and still not press its switch, so the control thinks the door is open. A latch that is starting to fail can also lose contact partway through, and the dishwasher stops as if you had opened it.
If the lights come on but the buttons don't register, or one needs a hard press or fires by itself, the touchpad or the ribbon cable connecting it to the board has failed.
If it won't start and you hear the drain pump running nonstop, the anti-flood float has tripped. Either water really did collect under the tub, which means there is a leak to find, or the float is stuck up in a dry pan. A dishwasher that quits mid-cycle and starts pumping out has likely tripped this float during the wash.
The board comes last
The control board runs everything, so it takes the blame for a lot. It is the last suspect on a no-start, after the latch, the power supply and the touchpad check out, because a new board won't fix a latch that isn't closing its switch.
Our technician tests the latch switch with the door shut, confirms power at the dishwasher's connection and checks the pan underneath before testing the board's outputs.
What it usually turns out to be
- PartDoor latch or door switchThe control won't start a cycle until the latch switch reports the door shut. A panel that lights up with a flashing start or door light, while the door is closed, points at the latch.
- PartNo power at the breaker or connectionA dishwasher with no lights and no beep at all isn't getting power. That can be a tripped breaker, a loose connection where it's wired in, or a blown thermal fuse inside.
- PartAnti-flood floatA float in the pan under the tub shuts the dishwasher off and runs the drain pump nonstop when water collects there. If it won't start and the pump keeps running, a leak tripped it or the float is stuck.
- PartTouchpadWhen the panel lights but the buttons don't register, or one needs a hard press or fires by itself, the keypad or its ribbon cable to the board has failed.
- PartControl boardThe board runs everything, so a fault there can look like almost anything. It's the last suspect, after the latch, the power supply and the touchpad check out.
Try this first
- Close the door firmly until the latch catches, and make sure no rack or dish is keeping it from shutting all the way.
- Check the dishwasher's breaker, and reset it once if it has tripped.
- If the dishwasher plugs into an outlet under the sink, make sure the plug is pushed all the way in.
- If the panel lights but won't respond, switch the breaker off for a minute and then back on.
Stop using it and call now if
- The breaker trips every time it runs
- A burning smell
- Water on the floor and a drain pump that won't stop running
Other dishwasher problems
- Dishwasher won't drain
- Dishwasher leaves dishes dirty or gritty
- Dishwasher leaking on the floor
- Dishwasher not drying the dishes
Or go back to dishwasher repair in Warren.