Microwave will not start a cooking cycle and displays E1 on the control panel.

Safety first: Unplug the microwave from the mains. Microwaves contain high-voltage components that can retain charge even when unplugged. Do not touch the high-voltage capacitor or magnetron area unless you are trained and have discharged the capacitor properly.

• Check door closure: Ensure the door closes fully and evenly. Inspect the plastic latch hooks on the door for cracks or deformation.
• Test door switches (basic check): With the unit unplugged, gently press the door in and out while listening for distinct clicks from the interlock switches. If you do not hear clear clicks, the switch or latch may be faulty.
• Inspect latch and strike: Examine the latch openings in the cabinet front where the door hooks insert. Look for broken plastic or misalignment that prevents full engagement.
• Advanced (for qualified persons only): Remove the outer cover, locate the door interlock switch bracket on the right side of the cavity, and test each microswitch with a multimeter for proper continuity (NO/NC) when the door is opened/closed. Replace any switch that does not change state correctly.
• Reassemble and test: Refit the cover, ensure all screws are tight, plug in, and test with a short 30-second water heating cycle.