8.
FAULTS
When the service display or the operating panel is flashing, the burner
controller has detected a fault. In case of several faults, the temperature
display shows an additional code.
After the fault has been remedied, the burner controller can be restarted
by pressing the reset button on the operating panel.
The following faults are detected and displayed:-
Temperature
display
Service
display
Description Possible
cause/remedy
1
0
Sensor fault S1
•
Check the wires for breaks
•
Replace S1
2
0
Sensor fault S2
•
Check the wires for breaks
•
Replace S2
3
0
Sensor fault hot water sensor S3
•
Check the wires for breaks
•
Replace hot water sensor S3
0
Sensor fault after self-check
•
Check the wires for breaks
•
Replace boiler sensor S1 and/or S2
1
Temperature too high
•
Air in system
•
Pump does not run
•
Too little circulation in system, radiators closed,
pump setting too low
2
Exchange S1 and S2
•
Check the cable loom
•
Replace S1 or S2
4
No flame signal after 4 ignition
attempts
•
Gas tap closed
•
Incorrect ignition distance
•
Gas inlet pressure too low or disappears
•
Gas valve or ignition unit does not receive voltage
5
No flame signal after 4 restart
attempts
•
Condensate discharge blocked
•
Check setting of gas valve
6
Flame
detection
fault
•
Replace ignition cable + spark probe
•
Replace ignition unit
•
Replace burner controller
7
Parameters
programmed
with
computer connection
•
Reset appliance
8
Fan speed incorrect
•
Fan rubs against casing
•
Wiring between fan and casing
•
Check the wires for poor contact (tacho signal)
•
Replace fan
F or h
Internal fault
•
Reset the appliance
•
Earthing fault
47