E5 — Fault with flame amplifier

What does E5 mean?

The burner is blocked due to a fault with the flame amplifier, a critical component for detecting the flame during operation.

• Malfunction of the flame amplifier circuit
• Internal fault within the control unit

Click steps to track your progress.

1. 1

   Attempt to reset the boiler by pressing the reset button 'R'.

2. 2

   Check for any loose electrical connections leading to the control unit.

3. 3

   Contact a qualified heating technician to diagnose and replace the control unit.