Weishaupt WG20 1-C Z-LN Series Manual page 71

The following faults must only be rectified by qualified personnel:
Fault codes
Flashing 6 times
Actuator fault
Flashing 7 times
Flame failure during opera-
tion
(partial load)
Flashing 8 times
Gas pressure switch fault
Flashing 9 times
Flame failure during opera-
tion
(full load)
Flashing 10 times
Combustion manager fault
83054602 1/2020-01 La
Installation and operating instruction
Gas burner WG20.../1-C Z-LN
Fault
Actuator does not reach tar-
get position within 10
seconds
Flame signal insufficient
Gas pressure switch does
not react
Flame signal insufficient
Burner does not start
Cause
Actuator plug unplugged
Actuator defective
Setting of limit switches in-
correct
Gas valve / air damper
blocked
Burner setting incorrect
Ionisation electrode soiled
Ionisation electrode set in-
correctly
Ionisation electrode defect-
ive
Gas pressure switch set in-
correctly
Gas pressure switch de-
fective
Burner setting incorrect
Ionisation electrode soiled
Ionisation electrode set in-
correctly
Ionisation electrode defect-
ive
Parameters have been
changed
Combustion manager de-
fective
71-96
10 Troubleshooting
Rectification
Plug in actuator plug
Check actuator, replace if
necessary
Check position of limit
switches
Check freedom of move-
ment of gas valve and air
damper
Check burner setting
Check flame signal
Clean ionisation elec-
trode
Set ionisation electrode
[ch. 9.5]
Check the ionisation
electrode, replace if ne-
cessary
Set gas pressure switch
[ch. 7.3.1]
Check gas pressure
switch, if necessary re-
place
Check burner setting
Check flame signal
Clean ionisation elec-
trode
Set ionisation electrode
Check the ionisation
electrode, replace if ne-
cessary
Reset burner [ch. 10.1.2]
Reset burner [ch. 10.1.2],
if fault reoccurs replace
combustion manager