What does F.27 mean?

The boiler's flame detector is sensing a flame incorrectly, even when there shouldn't be one, or it cannot confirm a flame is present when it should be. This is a safety fault.

• Flame detector defective.
• Electronics defective.

Click steps to track your progress.

1. 1

   Reset the boiler by pressing the reset button.

2. 2

   Power off the boiler, wait a moment, then power it back on.

3. 3

   If the error persists, contact a qualified service technician to inspect the flame detector and electronics.