The short answer
An electrical complaint on an EC unit has one feature a countertop appliance does not: the appliance is fixed into cabinetry, and the cabinetry is combustible. That changes the threshold for stopping. A smell, a trip or a mark on the surround is a reason to take the appliance out of use now and have the installation looked at rather than to watch it for a few days.
What to act on immediately
- A burning or hot-plastic smell during or after a run — Act on it. It is not something that clears on its own.
- The breaker trips when the appliance is asked to heat — The circuit is reporting a condition rather than being unreliable.
- Discolouration on the cabinetry around the vents — Heat has been where it should not be, over time.
- Flashes, snaps or a blue glow inside the cavity — Stop the appliance and leave it off.
- The lights in the room dim when it starts — Worth reporting; it points at the circuit rather than the appliance.
Where the fault usually sits
- The circuit rather than the appliance — A built-in run often feeds more than one appliance. A shared or undersized circuit produces trips under load and dimming at start-up, and it is the first thing to establish because it is not an appliance repair at all.
- Heat accumulating in the surround — An obstructed air path lets the appliance and the cabinetry sit hotter than either was designed for. It explains discolouration and smells long before it explains a trip.
- Something in the cavity that should not be there — Metal trim on a dish, foil, or a cover plate damaged by a previous arc will produce flashes inside the cavity. It is the one cause here an owner can often see and remove.
- A connection at the outlet behind the appliance — Out of reach on a built-in, which is exactly why it goes unnoticed. A poor connection makes heat, and heat inside cabinetry is the reason this page exists.
- The high-voltage side of the appliance — Last in the order and first in seriousness. It is not approachable by an owner under any circumstances, and an appliance suspected of it stays out of use.
Isolate first, investigate second
- Switch the appliance off at the breaker before anything else — On a built-in unit the breaker is the isolation point you can actually reach.
- Look into the cavity in daylight for metal, foil or a damaged cover — Do this with the appliance isolated. It is the one cause an owner can find and correct.
- Check whether the trip only happens under load — A trip that arrives when the heat is requested is a different report from one that arrives at random.
- Look at the cabinetry around the vents for discolouration — It records a history the appliance will not tell you about.
- Establish what else is on the same circuit — This is often the whole answer, and it needs nothing but the breaker panel and a few minutes.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel — a capacitor can hold a charge after the power is off, and nothing on this page asks an owner to remove a panel at all. Do not reset a breaker repeatedly to keep an appliance running; a breaker that trips under load is doing its job. An appliance that has smelled of burning, arced inside the cavity, or marked the cabinetry around it stays out of use until somebody has looked at it.
When to call a technician
Isolating at the breaker, looking into the cavity and working out what shares the circuit are owner work. Everything else here is not. Call an electrician for a circuit that trips under load or for dimming at start-up, and an appliance technician for anything that happened inside the appliance. On a built-in installation, call rather than wait.
Other faults covered for EC models
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
