317 — Incorrect power supply frequency

What does 317 mean?

The boiler has detected an incorrect frequency in its electrical power supply. This can prevent proper operation and requires a stable power source.

• External power supply issues from the mains electricity
• Fluctuations or instability in the mains electricity frequency

Click steps to track your progress.

1. 1

   Press and hold down the Reset button for 2 seconds to try clearing the fault.

2. 2

   Check if other electrical appliances in your home are experiencing issues related to power quality.

3. 3

   If the fault persists, contact an Authorised Service Centre or your electricity provider if external causes are suspected.