Wolf CGB-75 Installation And Technical Manual page 61

Fault Fault
code
35 BCC missing
36 CRC fault, BCC
37 Incorrect BCC
38 BCC no. invalid
39 BCC system error
41 Flow monitoring
50 Activation of boiler
coding card
52 Activation of boiler
coding card
60 Ionisation current
fluctuates
61 Ionisation current fails
LED constantly red
30 62 555_0709
Troubleshooting
Cause
Boiler coding card was removed
Faulty boiler coding card
The boiler coding card is incompatible with the control
unit PCB
Faulty boiler coding card
Faulty boiler coding card
Return temperature > Flow + 25 K
The boiler coding card must be enabled
The boiler coding card must be enabled
The siphon is blocked, or the flue gas system is
blocked, severe storm
Poor gas quality, monitoring electrode faulty,
severe storm
Ionisation cable shorted out or
ionisation electrode earthed (casing)
Remedy
Fit the correct boiler coding card
Replace boiler coding card
Fit the correct boiler coding card
Replace boiler coding card
Replace boiler coding card
Vent heating system, check system pressure
Check heating circuit pump
Press reset 2 x
Press reset 2 x
Clean siphon, check flue gas system,
check ventilation air, check monitoring
electrode
Check monitoring electrode and cable
Check ionisation cable and position of
electrode to burner. Press reset
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