Wolf CGB-75 Assembly And Operating Instructions Manual page 53

Fault Fault
code
34 CRC fault, BCC
35 BCC missing
36 CRC fault, BCC
37 Incorrect BCC
38 BCC no. invalid
39 BCC system error
41 Flow monitoring
43 Burner starts > 20 per
hour
50 Activation of boiler
coding card
52 Activation of boiler
coding card
60 Ionisation current
fluctuates
61 Ionisation current fails
LED constantly red
3062555_201507
Troubleshooting
Cause
Faulty boiler coding card
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
Flow rate through the heat exchanger too low or,
in case of cascade, measuring point of the header
temperature unsuitable, or power consumption of the
calorifier charging too low.
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
Replace boiler coding card
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
Check the flow rate
Header sensor must measure the common
feed temperature of the cascade.
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
53