Do this first
Switch the circuit off if the machine trips a breaker or a ground-fault device, smells hot, or has water under it. Do not reset repeatedly. If the machine has simply stopped and shows a leak indication, that is protection operating rather than an electrical fault, and the source of the water is the thing to find.
What belongs here
- A ground-fault device trips rather than the breaker — Current taking a path through water, which is precisely what that device exists to catch.
- The machine stops and reports a leak — Protection operating. The electrical part of the problem has already been handled by the machine.
- A hot smell near the base or the toe panel — Heat at the motor electronics or the supply, and neither is a place heat belongs.
- Water visible on the floor under the front edge — Evidence that decides the priority, whatever else the machine is showing.
- The breaker trips at the same point in every cycle — A load-dependent fault, and the stage names the load involved.
- NEAR MISS: the machine will not start and nothing is wet or hot — That is a start complaint on its own page, with none of this urgency.
Ranked for this machine
- Water reaching the base and triggering protection — First, because it is the design intent and because a leak anywhere in the cabinet ends here. The electrical symptom is a consequence rather than a cause.
- A degraded supply connection under the cabinet — Second. It is where the current enters, it is made once and never inspected, and heat there worsens what caused it.
- The motor electronics low in the cabinet — Third. A direct-drive machine puts its drive electronics in the wettest part of the appliance, which is a robust arrangement until it is not.
- The heating element leaking to ground — Last by frequency, and it explains a trip that happens only when the water is being heated.
Urgency before likelihood
- Switch the circuit off and leave it off if anything is hot or has tripped — It is the only risk-reducing action available to an owner and it costs nothing.
- Look for water on the floor and under the front edge — Water present changes this from a routine call to a same-day one.
- Note the cycle stage at which it stopped or tripped — Fill, main wash or heated dry. The stage names the load and narrows the search.
- Do not keep restarting a machine that reports a leak — It is holding itself off deliberately, and repeated restarts only move water around.
Appropriate owner actions
- Turn off the breaker for the dishwasher circuit and label it — Labelling prevents somebody restoring it while the machine is being looked at.
About 10 min
- Dry the floor and put a sheet of paper under the front edge — Paper shows a slow leak returning far better than a wet floor does.
Tools: paper towelAbout 10 min
- Write down the stage and the time at which the machine stopped or tripped — Only you can observe this and it is the most useful thing you can hand over.
About 5 min
- Check whether a ground-fault device rather than the breaker has tripped — They mean different things, and knowing which decides whether an electrician is needed.
Tools: flashlightAbout 10 min
- STOP: do not remove the toe panel or pull the machine out — The supply and the water line are both short and both live under a fitted appliance.
The rules here
Safety
Unplug the appliance or switch off its breaker before removing any panel, and note that a capacitor can hold a charge after the power is off. On a hardwired machine the breaker is the only isolation there is. Do not mop under a machine that is still energised, and do not attempt to dry the base tray by running a cycle. Leave the door latch as the factory set it: the machine checks it before filling with hot water.
Always a call
Everything on this page needs a technician, and a ground-fault trip with water present needs one the same day. A machine holding itself off on leak protection also needs one, because the water has a source and the protection will keep operating until it is found. Leave the circuit off meanwhile and report the stage, the smell and whether water was visible.
Nearest pages of this class
What is not here
This covers the LG dishwasher class and carries no wiring detail, sensor locations or part references, because nothing on it is an owner repair and those differ by family. Where a family or model page exists it names the protection arrangement for that cabinet and is the right reference for whoever services it.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
