117 — Pressure in hydraulic circuit too high (> 2.7 bar)

What does 117 mean?

The water pressure in the boiler's hydraulic heating circuit is excessively high, exceeding 2.7 bar. This can be a safety concern and prevent operation.

• Overfilling the system with water
• A problem with the expansion vessel

Click steps to track your progress.

1. 1

   Refer to the 'FILLING THE SYSTEM' section in your manual to understand normal pressure and how to adjust it.

2. 2

   If the pressure remains high, you may need to carefully bleed a radiator to release some water and reduce pressure.

3. 3

   If the issue persists or reoccurs, contact an Authorised Service Centre to investigate the cause of overpressure.