Microwave will not start; display shows E1 immediately after pressing START.

Safety first: Unplug the Logik microwave from the mains before any disassembly. High-voltage components inside a microwave can retain a dangerous charge even when unplugged. Do not touch the capacitor or magnetron area.

Step-by-step checks:

• 1. Inspect the door closure: Ensure the door closes fully and evenly. Check that the plastic latch hooks on the door are not cracked or bent. If the door feels loose or misaligned, gently lift the door while closing to see if the error disappears (do not operate long-term like this).
• 2. Check for obstructions: Look for food debris or warped trim around the door frame that might prevent the latch hooks from fully engaging the interlock switches.
• 3. Test door switches (for competent DIYers only): Remove the outer cabinet (usually a few screws at the back and sides). Do not touch any metal parts near the capacitor or magnetron. Locate the door interlock switch cluster near the latch openings. Using a multimeter on continuity, test each switch while opening/closing the door. A switch that does not change state (open/closed) is faulty.
• 4. Check wiring harness: Inspect the small wiring harness that connects the door switches to the control board for loose spade connectors or burnt terminals. Reseat any loose connectors.
• 5. Replace faulty parts: If a switch tests bad or is heat-damaged, replace it with a compatible Logik door switch (match the rating and terminal layout). If latch hooks are broken, replace the door latch assembly.

When to stop: If you are not comfortable working around high-voltage appliances, or if the error persists after replacing obvious faulty switches, contact a qualified appliance technician.