Dishwasher displays E9 and may stop during heating or drying phase.

Safety first: Isolate the dishwasher from mains power before opening any control covers.

• 1. Confirm heating issue: Check if the dishwasher heats at all during a cycle. If not, and E9 appears, the control board may not be switching the heater correctly.
• 2. Access control module: Remove the inner door panel screws to access the control board housing at the top of the door. Carefully open the housing.
• 3. Visual inspection: Look for burnt or darkened areas around the heater relay, melted plastic, or a burnt smell. Do not touch components unnecessarily.
• 4. Check connectors: Ensure all multi-pin connectors are fully seated and show no signs of overheating.
• 5. Replacement: If there is visible damage or if E9 persists after reseating connectors, the main control board should be replaced with the correct Finlux module.
• 6. Professional service: Control board diagnosis and replacement involve handling static-sensitive electronics and mains wiring; a qualified technician is recommended.