Wolf CGB-2-24 - Troubleshooting Warning Messages

3064810_201804 97
Fault
code
Warning Possible causes Remedy
1 Burner control unit
replaced
The PCB has detected that the burner
control unit has been replaced
Ensure that the correct boiler coding card has
been inserted.
Check appliance parameter settings.
2 Heating circuit pressure Water pressure has fallen
below warning limit
Check the system pressure,
test sensors
3 Parameter changed Another boiler coding card has been
inserted. All parameters have been reset
to the factory setting; PCB HCM-2 or
GBCe has been replaced
Ensure that the correct
boiler coding card is inserted.
Check appliance parameter settings.
4 Noameestablished Noamewasdetected
at the last start attempt
of the burner.
Wait for more start attempts.
Check the ignition electrode and ignition
transformer.
Check the monitoring electrode.
Check the gas supply pressure.
5 Flame failure during
stabilisation time
Flame failure after
safety time
Flame failure during operation Check/replace monitoring electrode,
uegaspathblocked,
Condensate drain blocked,
Check the gas supply pressure.
24 Speed below or above
limit
Fan speed does not reach
set speed or
standstill
Checkuesystem,PWMand
power cable to fan
Check connection between CGBe and HCM-2
43 Many burner starts Excessive number of burner starts Inadequate heat transfer:
Ensure adequate heat transfer.
(Open radiators).
Increase burner cycle block HG09
53 IO control deviation Gas valve faulty
Gas supply pressure outside set range
Ionisation electrode corroded/bent
Current controller on GBC-e faulty
Gas valve power supply faulty
Burner earthing faulty
Gas valve:
- Check cables, plugs, power supply and
switching.
Gas pressure:
- Check gas supply pressure (flow pressure);
if OK,
Ionisation electrode:
- Check the condition of the electrode, clean
or replace if necessary.
- Adjust gap and position or replace if neces-
sary.
Replace GBC-e PCB,
as current controller possibly faulty.
Press reset button.
42.Troubleshootingwarningmessages