Wolf CGB-75 Installation And Operating Instructions Manual page 59

Fault Fault
code
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
fluctuation.
61 Ionisation current fails
LED constantly red
3062555_201804
31. Troubleshooting
Cause
Boiler coding card fault
Boiler coding card fault
Return temperature > Flow + 25 K
Heat exchanger flow rate too low or for cascades, the
measurement point of the manifold temperature may
be unsuitable, or the output demand of the cylinder
charging may be too low.
The boiler coding card must be enabled
The boiler coding card must be enabled
The trap is blocked, or the flue system is blocked, or
severe storm
Poor gas quality, monitoring electrode faulty, or severe
storm
Ionisation cable short circuit or ionisation electrode
earthed (casing).
Remedy
Replace boiler coding card
Replace boiler coding card
Vent the heating system, check the system
pressure.
Check heating circuit pump.
Check flow rate
The manifold sensor must record the com-
mon flow temperature of the cascade.
Press reset 2 x
Press reset 2 x
Clean trap, check flue system,
check ventilation air, check monitoring
electrode
Check monitoring electrode and cable
Check ionisation cable and position of elec-
trode to burner. Press reset button.
59