Weishaupt WG20 1-C Z-LN Series - Page 72

Installation and operating instruction
Gas burner WG20…/1-C Z-LN
10 Troubleshooting
83054602 1/2020-01 La
72-96
The following faults must only be rectified by qualified personnel:
Fault codes Fault Cause Rectification
Flashing 12 times
Valve proving fault
First test phase
Valve 1 leaking Gas valve train leaking Check soundness of gas
valve train [ch.7.1.3]
Gas pressure switch set in-
correctly
Set gas pressure switch
Gas pressure switch de-
fective
Check gas pressure
switch, if necessary re-
place
Multifunction assembly de-
fective
Replace multifunction as-
sembly
Flashing 13 times
Valve proving fault
Second test phase
Valve 2 leaking Gas valve train leaking Check soundness of gas
valve train [ch.7.1.3]
Gas pressure switch set in-
correctly
Set gas pressure switch
[ch.7.3.1]
Gas pressure switch de-
fective
Check gas pressure
switch, if necessary re-
place
Multifunction assembly de-
fective
Replace multifunction as-
sembly