E8 error and the freezer may not defrost properly, with ice building up around the evaporator fan area.

Safety warning: Unplug the freezer. The defrost heater operates at mains voltage and can be hot.

Procedure:

• 1. Manual defrost: Allow the unit to defrost fully to gain access to the evaporator and heater. Use towels to catch water; do not use heat guns too close to plastic parts.
• 2. Access heater: Remove the internal rear panel to expose the evaporator and heater. The heater is usually a metal or glass-tube element clipped under or around the evaporator.
• 3. Test heater: Disconnect heater terminals and measure resistance. A typical heater will show a finite resistance (e.g., 50–300 Ω). If open circuit, the heater is faulty and must be replaced.
• 4. Check wiring and thermal fuse: Inspect wiring for burns or breaks. If a thermal fuse is present in series with the heater, test it for continuity and replace if open.
• 5. PCB relay: If heater and wiring are good, the defrost relay on the main PCB may have failed. Inspect the PCB for burnt relay contacts and replace the PCB if necessary.

Note: Ensure the new heater is clipped in the same position to avoid melting plastic liners.