Code
Display text
Description
Solution
H.01.14
Max Tflow
Flow temperature has exceeded the
maximum operating value
Flow temperature sensor above normal range:
Bad connection: check the wiring and connec
tors
No flow or insufficient flow:
Check the circulation (direction, pump,
valves)
Check the water pressure
Check the cleanliness of the heat exchanger
H.01.15
Max Tflue Gas
Flue gas temperature has exceeded
the maximum operating value
Maximum flue gas temperature exceeded:
Check the flue gas outlet system
Check the heat exchanger to ensure that the
flue gas side is not clogged
Faulty sensor: replace the sensor
H.02.00
Reset In Progress
Reset In Progress
Reset procedure active:
No action
H.02.02
Wait Config Number
Waiting For Configuration Number
Configuration error or unknown configuration
number:
Reset CN1 and CN2
H.02.03
Conf Error
Configuration Error
Configuration error or unknown configuration
number:
Reset CN1 and CN2
H.02.04
Parameter Error
Parameter Error
Factory settings incorrect:
Parameters are not correct:
Restart the boiler
Reset CN1 and CN2
Replace the CU-GH PCB
H.02.05
CSU CU mismatch
CSU does not match CU type
Configuration error:
Reset CN1 and CN2
H.02.09
Partial block
Partial blocking of the device recog
nized
Blocking input active or frost protection active:
External cause: remove external cause
Wrong parameter set: check the parameters
Bad connection: check the connection
H.02.10
Full Block
Full blocking of the device recog
nized
Blocking input is active (without frost protection):
External cause: remove external cause
Wrong parameter set: check the parameters
Bad connection: check the connection
H.02.12
Release Signal
Release Signal input of the Control
Unit from device external environ
ment
Waiting time release signal has elapsed:
External cause: remove external cause
Wrong parameter set: check the parameters
Bad connection: check the connection
H.02.15
Ext CSU Timeout
External CSU Timeout
-
H.02.18
OBD Error
Object Dictionary Error
Reset CN1 and CN2
See
The data plate for the CN1 and CN2
values.
H.02.36
Funct device lost
Functional device has been discon
nected
Communication error with the SCB PCB:
Bad connection with BUS: check the wiring.
No PCB: reconnect PCB or retrieve from mem
ory using 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
-
10 Troubleshooting
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