No display code (dash) — Fault, burner control unit

What does Burner Control Unit Fault mean?

The burner is in a fault state indicating a problem with the burner control unit itself, even without a specific fault code on the display.

• Malfunctioning burner control unit
• Faulty ignition electrodes or their connecting cables
• Strong electromagnetic interference (EMC) near the appliance

Click steps to track your progress.

1. 1

   Press the reset button 'R' on the boiler.

2. 2

   Check for any strong interference (EMC) fields near the appliance, such as large motors or unshielded electrical devices.

3. 3

   Contact a qualified heating technician to check the ignition electrodes, their connecting cables, and potentially replace the control unit if the fault persists.