Code
Display text
Description
Solution
H.02.46
Full Can Device Adm
Full Can Device Administration
SCB not found:
Carry out an auto-detect
H.02.48
Funct Gr Conf Fault
Function Group Configuration Fault
SCB not found:
Carry out an auto-detect
H.02.50
Funct Gr Comm Err
Function Group Communication Er
ror
-
H.02.55
Inval or miss SerNR
Invalid or missing device serial num
ber
Replace the CU-GH PCB
H.02.61
Unsupported function
Zone A doesn't support the selected
function
Zone A function setting is not correct or is not al
lowed on this circuit:
Check the setting of parameter CP020.
H.02.62
Unsupported function
Zone B doesn't support the selected
function
Zone B function setting is not correct or is not al
lowed on this circuit:
Check the setting of parameter CP021.
H.02.63
Unsupported function
Zone C doesn't support the selected
function
Zone C function setting is not correct or is not al
lowed on this circuit:
Check the setting of parameter CP023.
H.02.64
Unsupported function
Zone D doesn't support the selected
function
Zone C function (DHW) setting is not correct or is
not allowed on this circuit:
Check the setting of parameter CP022.
H.02.65
Unsupported function
Zone E doesn't support the selected
function
Zone E function (AUX) setting is not correct or is
not allowed on this circuit:
Check the setting of parameter CP024.
H.02.66
TAS not connected
The anti corrosion protection (TAS)
of the Domestic Hot Water tank is
not connected
Corrosion protection anode (TAS) not detected:
Anode is not connected: Connect the anode
Anode is not connected correctly: Connect the
anode correctly
H.02.67
TAS short-circuit
The anti corrosion protection (TAS)
of the Domestic Hot Water tank is
shortend
Corrosion protection anode (TAS) missing or
short-circuited:
Bad connection: check the wiring and connec
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Faulty sensor: replace the sensor
H.02.79
Appliance lost S Bus
There is no appliance present on
system bus (cascade).
S-Bus connector devices missing:
Bad connection: check the wiring and connec
tors
Incorrectly fitted connectors: check that the
connectors has been correctly fitted
End connectors (with resistor) are missing or
badly connected: check wiring and connectors
Check if connected devices are activated
H.02.80
Missing Cascade Ctrl
Missing Cascade controller
Cascade controller not found:
Reconnect the cascade master
Carry out an auto-detect
H.03.00
Parameter Error
Safety parameters level 2, 3, 4 are
not correct or missing
Parameter error: security kernel
Restart the boiler
Replace the CU-GH
H.03.01
CU to GVC data error
No valid data from CU to GVC re
ceived
Communication error with the CU-GH:
Restart the boiler
12 Troubleshooting
166
C 340 / C 640
7762666 - v.02 - 29092020
