Dishwasher tripping the electrics: what our engineers find
These figures come from NAC's own repair records: 123 dishwasher jobs our engineers attended for this fault. Here is what they found, what fixed it and what it typically cost.
When a dishwasher keeps tripping the electrics, engineers sometimes find a fault with the water heater, or with the combined heater and pump unit fitted to some machines, which lets electricity leak where it shouldn't. Other times the problem lies outside the machine: a plug that has burnt or isn't pushed fully into the socket, the wrong fuse in the plug, a faulty wall socket or a damaged power cable. Engineers also sometimes find water reaching electrical parts, for example from a loose hose connection or a leak into the inside light.
To track down the cause, an engineer checks the plug, fuse and socket, then tests the electrical parts inside the machine one at a time. They may run the dishwasher with a suspect part disconnected to confirm which one is at fault. Simple problems such as a loose connection or the wrong fuse can often be put right on the spot. If the socket itself is faulty, the engineer will advise having an electrician look at it.
When a new heater, pump unit, light or power cable is needed, it often has to be ordered and fitted at a second visit, after which the machine is run through a cycle to check it fills, heats and drains properly.
Written by our engineers from these jobs.
- Jobs attended
- 123
- Confirmed repairs
- 51
- This is not a success rate. Jobs inside their 60-day window, jobs still being classified, jobs held for review and visits that didn't end in a repair aren't counted.
- Fixed at the first appointment
- 28%
- about 3 in 10 of our repairs
- Typical total paid by customers
- £114 to £260
- including parts and VAT, from 49 repairs
No single cause has enough confirmed repairs behind it yet to show for this fault.
Error codes we see with this fault
- Bosch E09: Heating fault, usually in the heat pump circuit.
- Lamona E01: Anti-flood protection activated: water detected in the base.
- Miele F70: Anti-flood protection activated: water detected in the base.
- Samsung LC: Leak detected: water in the base.
- Siemens E15: Anti-flood protection activated: water detected in the base.
About the price. £114 to £260 is the typical total paid by customers, including parts and VAT: the middle half of what customers paid on 49 of these repairs. Repairs paid for by manufacturers and insurers aren't counted, because that work is charged at contract rates. It's a guide, not a quote. Your engineer confirms a fixed price before any work starts.
Before you check anything yourself
- Switch the dishwasher off and unplug it, or turn it off at the isolator switch, before you touch anything. Our guide to safely isolating an appliance walks you through it.
- If it involves the mains supply, sealed parts, or you're not confident at any point, stop and book a qualified engineer rather than risk injury or further damage.
Rather leave it to us?
- Fixed-price quote before any work starts
- Same or next-day visits where available
- UK-wide engineer coverage