How to Fix / Troubleshooting

Safety first: Switch off the circuit breaker before opening any access panels.

Check mains supply: Verify that the oven is on a dedicated circuit and that the breaker is not tripping. If other appliances also flicker, consult an electrician.
Inspect terminal block: Access the rear connection box and check that all screws on the terminal block are tight and that there are no signs of overheating or melted insulation.
Examine power cord: Look for cuts, kinks, or burn marks on the power cable. Replace if damaged.
Power reset: Turn off power for 10 minutes, then restore. If E7 returns immediately, the internal power supply on the control board may be defective.

Control board replacement should be done by a qualified technician due to the risk of electric shock and the need to correctly transfer wiring.

Princess oven displays E7 and the display may flicker or go blank intermittently.

Possible Causes