S.14 — Hot Water Demand Fan Sensor Error (EcoTEC Pro / EcoTEC Plus)

What does S.14 mean?

This error suggests a problem with the fan sensor in the EcoTEC Pro / EcoTEC Plus boiler during a domestic hot water (DHW) demand. The fan is critical for safe operation and proper combustion.

• Fan sensor fault in DHW mode
• Fan malfunction

Click steps to track your progress.

1. 1

   Turn off the boiler at the main power supply and restart it after a brief pause.

2. 2

   Check for any visible obstructions around the boiler's flue or air intake.

3. 3

   If the error persists, contact a qualified heating engineer to diagnose or replace the fan sensor.