Find out whether the trips follow hot cycles
A washer's heating element sits in water and it is the part most likely to develop a leakage path to earth as it ages. If the protective device trips during or shortly after the heating phase, and cold cycles run without incident, that pattern is strong evidence. It is also useful evidence, because it identifies one part rather than a whole machine.
What you find
- The device trips during or just after the heating phase — The heater signature, and it is the most common single pattern.
- Cold cycles run normally and hot ones do not — A clean comparison, and it is worth making deliberately.
- The device trips as soon as the machine is switched on — A different fault, and it points at wiring rather than the heater.
- Other circuits trip at the same time — An installation question rather than an appliance one.
- Trips started after a leak or a very damp period — Moisture creating the leakage path, which is its own case.
- NEAR MISS: a device that trips once during a storm — Supply disturbances happen, and a single event that never repeats is not a pattern.
Ranked for a leakage trip
- A heating element leaking to earth — First. It sits in water, it ages, and when its insulation degrades the leakage appears precisely when it is energised.
- Moisture in a connector or the wiring loom — Second. It produces trips that are worse in damp weather or after a leak, and better when things dry out.
- A degraded motor or pump winding — Third. It leaks under load rather than under heat, so the trips follow spin instead of heating.
- An installation or wiring fault — Last, and it is indicated when other circuits or appliances are affected too.
Compare cycles, then hand over
- Run a cold cycle and note whether it completes — It is the control test and it costs one wash.
- Run a warm or hot cycle and note when any trip occurs — It confirms or excludes the top cause directly.
- Note whether anything else in the house is affected — It separates the appliance from the installation.
- Stop using the machine on the cycles that trip — Repeating a leakage fault is not a diagnosis.
Owner steps
- Run a short cold cycle and note whether it completes normally — This is the control run and its result shapes everything after it.
Tools: notepadAbout 45 min
- Run a warm cycle and note exactly when any trip happens — During or just after heating is the element pattern; at switch-on is not.
Tools: notepadAbout 60 min
- Check whether other sockets or appliances are affected when it trips — If they are, the protective device is covering more than this machine.
About 10 min
- Stop using the cycles that trip until the machine is inspected — A leakage fault does not improve with repetition and the device is protecting people.
About 5 min
- STOP before the heater, the loom or any panel is opened — Mains voltage and standing water share the cabinet, and that is the boundary.
Before anything is opened
Safety
Unplug the appliance or switch off its breaker before removing any panel, and turn off the water supply first. Never reset a protective device repeatedly: a leakage trip means current is finding a path to earth, which is exactly the fault it exists to catch. Dry any water on the floor before working, and stop entirely if anyone feels a tingle from the cabinet.
When to call
Call an appliance technician if the trips follow the heating phase and cold cycles are clean, since that points at a component. Call an electrician if other circuits trip together, or if anyone has felt a tingle from the machine. Report the cold-versus-hot comparison: it is the most useful single piece of evidence for this fault.
Nearest pages of this class
Scope
Written for the LG washer class rather than one model line. Protective devices belong to the building's installation rather than the appliance, and a qualified electrician is the authority on them. Heater positions differ by family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
