S.40 displayed - Comfort protection mode active

What does S.40 mean?

The boiler is operating in a restricted comfort protection mode after detecting an internal issue. The product continues to run with limited functionality.

• A component may be defective, causing the system to enter comfort protection mode.

Click steps to track your progress.

1. 1

   Navigate to 'Menu' -> 'Live Monitor' and confirm to check the current status.

2. 2

   Read the fault memory in the menu to identify if any specific fault messages (F.XX) are stored.

3. 3

   Note that if no fault message is present, the product should automatically return to normal operating mode after some time.