EA 261 — Heat control module (HCM) or burner control unit faulty

What does EA 261 mean?

The Heat Control Module (HCM) is potentially defective or the burner control unit is faulty. This module is vital for managing the boiler's operation.

• Defective Heat Control Module (HCM).
• Faulty burner control unit.
• Loose or damaged connections to the HCM/burner control unit.

Click steps to track your progress.

1. 1

   Reset the boiler by pressing the reset button, or power cycle it at the mains.

2. 2

   If accessible, ensure the HCM is securely seated in its slot.

3. 3

   Contact a Gas Safe registered engineer, as the HCM or burner control unit may need to be checked or replaced.