Dishwasher Keeps Tripping Electrics? Causes & Checks

Switch off, unplug and close the water supply before dismantling the appliance

Dishwashers combine mains electricity, hot water and hidden pumps. Stop using the machine if it leaks, trips the electrics, smells burnt or contains sharp broken glass.

MOST LIKELY CAUSES

Start with these

Heater leaking to earth A common fault that appears once heating begins.

Pump electrical fault Tripping may occur during wash or drain.

Mains filter failure The appliance may trip immediately at power-up.

Water leak reaching wiring Internal moisture can create insulation failure.

◫ Symptom variations Match the exact point in the wash cycle. ⌄

Trips immediately when plugged in
Trips after several minutes
Trips during drain
Burning smell
Visible leak beneath machine

✓ Quick checks Simple checks before removing panels. ⌄

Note the exact cycle stage when the fault appears.
Record any error code before switching off.
Check filters, spray arms, hoses and visible water connections.
Confirm the appliance is level and correctly loaded.
Unplug before touching filters, hoses or internal parts.

If the cause is external: correct the hose, filter, loading or supply fault and test carefully.

If electrical, pump or internal leaks are suspected: stop and call an appliance engineer.

1 Step 1 — Stop resetting the circuit repeatedly Switch off and unplug before removing filters, hoses or panels. ⌄

Process

Unplug the dishwasher and leave it out of use.

Success looks like: Further electrical damage is avoided.

Escalate when: Repeated resetting is unsafe.

2 Step 2 — Record when it trips Switch off and unplug before removing filters, hoses or panels. ⌄

Process

Note whether it occurs at plug-in, fill, heat, wash or drain.

Success looks like: The likely component is narrowed down.

Escalate when: Do not run repeated tests.

3 Step 3 — Check only external damage and leaks Switch off and unplug before removing filters, hoses or panels. ⌄

Process

Inspect the plug, cable, socket area and floor.

Success looks like: An obvious safety issue is identified.

Escalate when: Internal testing requires an appliance engineer.

⌁ Common causes explained Why dishwasher faults develop. ⌄

Repeated tripping usually indicates electrical leakage or a short in the heater, heat pump, circulation pump, drain pump, mains filter, wiring or another internal component.

The stage of the cycle is the main clue. Fill faults happen at the start, circulation faults during washing, heater faults once the wash is underway, and pump faults during draining.

⌘ Advanced diagnostics Appliance-engineer checks and repair work. ⌄

Insulation-test heater and pumps.
Check mains filter and suppression components.
Inspect wiring for chafing and moisture.
Test individual loads under controlled conditions.
Verify appliance earth continuity.

▣ Parts that may need replacing Common components linked to this fault. ⌄

Heating element
Heat pump
Circulation pump
Drain pump
Mains filter

! When to call an appliance engineer Conditions that should end basic troubleshooting. ⌄

The dishwasher trips the electrics.
Water leaks from inside the cabinet.
The circulation or drain pump is grinding or seized.
Internal electrical testing is required.
The appliance must be dismantled to reach the fault.
The same fault returns after basic checks.

? Frequently asked questions Common dishwasher questions. ⌄

Why is there a small amount of water below the filter?

A small amount can be normal on some models. Standing dirty water above the filter usually indicates a drainage fault.

Why are plastics still wet after the cycle?

Plastic retains less heat than glass or ceramic, so some moisture is normal even when the drying system works.

Should I keep resetting the electrics if the dishwasher trips?

No. Unplug it and arrange electrical fault testing.