What does S.6 mean?

This error indicates that the EcoTEC 65kW boiler's fan is running for an extended or unexpected period after the burner has shut down in heating mode.

• Fan malfunction
• Control system error

Click steps to track your progress.

1. 1

   Reset the boiler by turning off and on the main electrical supply.

2. 2

   Check for any physical obstructions near the fan or flue terminal.

3. 3

   If the issue persists, contact a qualified heating engineer to inspect the fan and control board.