F65 Fault — Electronics overheating

What does F65 mean?

The boiler's electronic components are overheating, possibly due to external factors or an internal defect.

• Electronics overheating due to external influences
• Electronics defective
• Incorrect polarity on incoming mains

Click steps to track your progress.

1. 1

   Ensure the boiler area has adequate ventilation and is not exposed to excessive external heat.

2. 2

   Check the polarity on the incoming mains power supply (contact a technician).

3. 3

   If the issue persists, the PCB may be faulty (contact a technician).