Wolf CGB-2 Series Installation Instructions For Contractors page 94

Fault Fault
code
52 Max. cylinder heating
time
53 IO control deviation
54 GLV actuators
55 GLV system error
94
41. Troubleshooting
Possible causes
Cylinder heating takes longer than
permitted.
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
Flue gas recirculation
Incorrect gas type setting
Incorrect gas restrictor
Gas valve faulty
Fan faulty
Internal plausibility check of GBC-e
failed
Remedy
Check DHW sensor (cylinder sensor) and
sensor lead.
Check cylinder increase HG25 parameter.
Press reset button.
Check primary pump.
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.
Press reset button.
Set HG43 IO default value and HG44 KL
offset to factory setting (must be done by
contractor).
Flue gas recirculation:
- Check the flue path inside and outside the
appliance (leaking, blocked).
- Check wind effect.
Gas type setting
- Check gas type setting on the gas valve
and the AM/BM-2.
Gas restrictor:
- Remove the gas valve retainer.
- Check that the correct gas restrictor is
fitted.
CGB-2-20/24: blue
CGB-2-14: black
Gas valve:
- Check cables, plugs, power supply and
switching; if valves faulty, replace as nec-
essary.
Fan:
- Check for bearing damage.
- Check cables, plug-in connections, power
supply and switching.
- If fan faulty, replace it.
System error:
- Check for a strong electromagnetic field
nearby.
- Switch power ON/OFF, reset if necessary.
Press reset button.
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