The short answer
An EC unit is built into a surround, and that surround is part of the door complaint more often than the seal is. A cabinet that has moved, or a unit that was drawn up tight on one side, twists the frame enough that the door meets it unevenly. Read the plate inside the door frame first, then look at how the unit sits, and only then at the parts that hang off the door.
What this looks like in a built-in surround
- A line of daylight along one edge of the shut door — Usually at the corner furthest from the hinge, and usually wider at the top than the bottom.
- The door brushes the surround as it swings — A mark on the trim, or a rubbing sound near the end of the travel, says the opening and the door are no longer square to each other.
- Steam marks on the cabinet above the door — Damp air is escaping along the top edge during a long heat and condensing on the timber or laminate above it.
Causes on EC models, most likely first
- The unit sits out of square in its surround — Built-in cabinets move with the room, and a fixing drawn up harder on one side pulls the frame with it. The door is then meeting an opening that is no longer rectangular, and every symptom above follows from that one distortion.
- Worn latch hooks — The hooks hold the switches behind them in their working position. Once worn they still let the door shut while the switches fall short of where they have to be, which is why the unit behaves as though the door were open while it plainly is not.
- A door switch that no longer reports a closed door — These switches are consumables in the sense that they are operated every time the door moves. One that has gone intermittent produces a unit that starts sometimes, and that quits when the door is nudged.
Work the surround before the hardware
- Read the full designation off the plate inside the door frame — It settles which cabinet is in front of you before any part is considered, which matters here because the trim is not common across the designation.
- Sight down the shut door against the surround, top and bottom — A gap that is even top to bottom is a door problem. A gap that tapers is the opening, not the door.
- Check the mounting fixings for uneven tension — Fixings that have been pulled up unevenly are the commonest reason a built-in frame is out of square, and this is visible without removing anything.
Before you open anything
Safety
Nothing here asks for a panel to be removed. If you get as far as wanting one off, stop: unplug the appliance or switch off its breaker before removing any panel, because a capacitor can hold a charge after the power is off. A microwave door is an engineered barrier rather than a trim part. If it is bent, if the glass is cracked, or if anything snaps near its edge while it runs, take the unit out of service.
When to call a technician
Wiping the sealing surface and looking at how the unit sits in its surround is owner work. Replacing latch hooks, a switch pack or a hinge is not, because the unit has to come out of the cabinet and go back square. Call somebody if the door is visibly distorted, if the unit runs with a gap you can see, or if it stops and starts while the door is shut.
Other faults covered for EC models
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Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
