S.32 — Heat exchanger antifreeze active, high fan speed variation

What does S.32 mean?

The boiler's antifreeze protection is active, and there's an unusual variation in the fan speed. The appliance is in a waiting period, blocking normal operation.

• Heat exchanger antifreeze mode active.
• Excessive fan speed variation.
• Obstruction in flue system or faulty fan.

Click steps to track your progress.

1. 1

   Allow the boiler to complete its waiting period. This is often a temporary state.

2. 2

   Check for any obvious blockages or restrictions around the boiler's air intake or flue.

3. 3

   If the condition persists or occurs frequently, contact a qualified service technician to inspect the fan and system.