Display shows E7; unit may not power up fully or may reset repeatedly

Safety first: Turn OFF power at the breaker before removing covers.

Steps:

• 1. Power reset: Turn OFF the breaker for at least 10 minutes to fully discharge internal capacitors. Restore power and check if E7 clears.
• 2. Inspect PCB connections: Remove the front cover and locate the main control board. Reseat all multi-pin connectors firmly. Look for signs of moisture, corrosion, or burned components.
• 3. Check supply voltage: Verify that the incoming voltage matches the rating on the nameplate using a multimeter. Overvoltage or undervoltage can cause control errors.
• 4. Environment check: Ensure the heater is not installed in a location with excessive humidity or dripping water onto the electronics.
• 5. Firmware/board replacement: If E7 persists, the control board or its memory is likely defective. Replacement of the main PCB is required.

Note: Control board replacement may require configuration or firmware loading specific to your Electrolux model; this is typically done by an authorized service technician.