The short answer
A dishwasher that trips the household breaker, smells of hot plastic or shows a scorched plug is telling you about a water-to-electricity path or about a bad connection carrying current. Stop using it. The two owner-checkable items are the plug and the socket; everything past those is a technician's measurement, not an inspection.
What you actually see
- The breaker or the residual-current device trips when the machine runs — An earth leakage path, usually a wet element or a chafed lead. It trips on heating rather than on filling in most cases.
- A smell of hot plastic or fish near the socket — That smell is overheating insulation at a loose connection, and it is a fire precursor rather than a nuisance.
- Discolouration or melting at the plug pins — A high-resistance joint has been running hot for a long time. Replace the socket and the plug, not just the plug.
- A tingle from the door or the worktop trim — Stop immediately. Any sensation from a metal surface means an earthing problem, and this one is not a wait-and-see.
Ordered by what we actually find
- A failed heating element leaking to earth — First on any dishwasher that trips only when it heats, because the element is the one component immersed in water with mains across it.
- A loose or corroded plug and socket connection — Second, and the one that produces the smell and the scorch marks. It is a house fault as often as an appliance fault.
- Water reaching wiring inside the cabinet — Third. A slow leak that has been ignored for months ends here, which is why leaks get fixed rather than tolerated.
- A chafed harness or a failed pump winding — Fourth. It trips randomly rather than predictably, which makes it the hardest of the four to catch.
Work down this list
- Note whether the trip happens at fill, at heat or at random — That single observation points at three different components and it costs nothing to collect.
- Unplug and look at the plug pins and the socket face — Scorching is visible, and it is the fault you must not put back into service.
- Check whether other appliances on the same circuit also trip — If they do, the fault is in the house rather than in the machine.
- Stop — There is no fourth owner step here. Measurement past this point is done with the machine isolated and a meter, by somebody insured to do it.
Owner-side checks, step by step
- Switch off at the breaker and unplug the machine — This is the whole first step, and on this page it is not a formality. Leave it off until the cause is named.
About 5 min
- Inspect the plug, the flex and the socket face — Look for discolouration, melted plastic, and insulation that has hardened or cracked near the entry.
Tools: flashlightAbout 10 min
- Look under and behind the machine for water tracks — Dried mineral trails show where water has run even when everything is dry today.
Tools: torch, towelAbout 15 min
- Have the circuit and the appliance tested — Stop here. The next step is an insulation-resistance measurement on an isolated machine, which is not owner work.
Safety first, and it is not boilerplate
Safety
Unplug the appliance or switch off its breaker before removing any panel — a capacitor can hold a charge after the power is off. A standard household branch circuit is 15 A or 20 A, and a fault that trips it is passing enough current to start a fire in a cabinet you cannot see into. Never defeat, wedge or replace a tripping protective device with a larger one; the device is not the problem, it is the only part of the system currently doing its job. If you smell burning while the machine is running, kill the breaker rather than pulling the plug, because the plug is exactly where the heat may be.
Where the owner fix ends
Call as soon as any of the four symptoms above appears, and do not run the machine in the meantime. Call an electrician first, not an appliance technician, if other appliances trip the same circuit, if the socket is scorched, or if you feel anything at all through a metal surface — those are installation faults and an appliance visit will not touch them. Call an appliance technician when the circuit is proven sound and the trip follows the machine, because at that point the element, the pump and the harness need testing in a way that only isolation and a meter can do.
Pages like this one
Scope of this page
This page covers the Almison dishwasher as a class and stops at the point where measurement begins. It gives no element resistances, no harness colours and no terminal layouts, because those differ between builds under this badge and because publishing them invites work that should not be attempted. Household wiring, socket circuits and protective devices are outside this page entirely and belong to a licensed electrician. Where a family- or model-specific page exists, it carries the component layout for that build.
Other faults on this machine
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
