What does 342 mean?

The boiler experienced a brief interruption in the mains voltage supply. This can be a blocking fault.

• Temporary power outage or fluctuation
• Interference from a generator set, wind turbine, or other external equipment

Click steps to track your progress.

1. 1

   Check the electrical installation for stable mains voltage.

2. 2

   Consider if external equipment like a generator or wind turbine might be causing brief power interruptions.

3. 3

   If the issue recurs frequently, have a qualified electrician inspect your power supply.