F.57 - End comfort protection mode regulation fault

What does F.57 mean?

The boiler has detected a regulation fault while operating in comfort protection mode. This can be caused by a degraded ignition electrode.

• The ignition electrode is highly corroded, affecting its performance.

Click steps to track your progress.

1. 1

   Press the reset button on the boiler display up to three times to try and clear the fault.

2. 2

   Note that this indicates a regulation fault within comfort protection mode due to an underlying issue.

3. 3

   Contact customer service to have the ignition electrode checked for corrosion and replaced if necessary by a qualified technician.