Microwave will not start and displays E1 on the control panel

Safety first: Unplug the Russell Hobbs microwave from the mains before removing any panels. 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.

Step-by-step checks:

• 1. Inspect the door and latches: Open and close the door firmly several times. Check that the plastic latch hooks on the door are not cracked or bent and that they engage smoothly with the cabinet.
• 2. Check for door misalignment: Look at the gap around the door. If the door is sagging or rubbing, gently lift the door while closing. If alignment improves, the hinges or latch may be worn and preventing the interlock switches from actuating.
• 3. Access the door switches (for competent DIYers only): Remove the outer cabinet screws and slide the cover back. Locate the door interlock switch cluster near the door latch assembly. Visually inspect for burnt terminals, loose spade connectors, or broken switch actuators.
• 4. Test switches with a multimeter: With the unit unplugged, remove one wire from each switch and test continuity while pressing the door button or latch. A good switch should change from open to closed (or vice versa) when actuated. Replace any switch that does not change state or shows high resistance.
• 5. Reassemble and test: Refit the cabinet, ensuring no wires are pinched. Plug in and test. If E1 persists, the control board may be misreading the interlock circuit and professional diagnosis is recommended.

Warning: If you are not comfortable working around high-voltage appliances, contact a qualified microwave technician.