S.1 — Fan Start-up Error (EcoTEC 65kW)

What does S.1 mean?

This indicates a problem with the EcoTEC 65kW boiler's internal fan during its start-up sequence. The fan is crucial for safely expelling combustion gases.

• Fan malfunction
• Blocked fan

Click steps to track your progress.

1. 1

   Turn off the boiler at the main electrical supply for a few minutes, then restart it.

2. 2

   Ensure there are no visible obstructions around the boiler's air intake or flue terminal outside.

3. 3

   If the error reoccurs, contact a qualified heating engineer to inspect or replace the fan unit.