F.142 — Burner in a fault state (Communication error CAN bus)

What does F.142 mean?

The burner is in a fault state due to a communication error on the CAN bus, which means internal components are not communicating correctly. This could involve the fan unit or CAN bus connections.

• Fan unit malfunction (stepper motor)
• Faulty plug-in connections or cables of the CAN bus
• Faulty CAN bus subscribers

Click steps to track your progress.

1. 1

   Reset the appliance.

2. 2

   Listen for unusual noises from the fan unit; if it sounds unusual or the fault persists, contact a qualified technician.

3. 3

   A qualified technician should check the CAN bus connections and other subscribers if the fault continues.