Fault code reading


Fault code reading:

Fault codes:

  1. Turn on the ignition and activate the heater.

  2. After a couple of seconds, the lamp/LED will flash. Count the long flashes.

  3. If you are troubleshooting a previous operational problem that is no longer active, the fault code is shown in the subsequent phase. The flashes consist of 5 short phases and 1-11 longer phases (you must count the long flashes).

  1. 1 Long flash: non-start.

  2. 2 Long flashes: flame extinguishes during operation.

  3. 3 Long flashes: undervoltage.

  4. 4 Long flashes: flame sensor indicates constant flame.

  5. 5 Long flashes: flame sensor fault.

  6. 6 Long flashes: temperature sensor fault.

  7. 7 Long flashes: fuel pump fault.

  8. 8 Long flashes: combustion air fan fault.

  9. 9 Long flashes: glow plug fault.

  10. 10 Long flashes: overheating.

  11. 11 Long flashes: Water pump fault.

  12. 5 x Rapid flashes: too many non-starts.