Code
Text display
Possible cause/check
H01.13
Heat Exchanger temperature has exceeded the
maximum operating value
Maximum heat exchanger temperature exceeded:
Check the circulation (direction, pump, valves).
Check the water pressure.
Check that the sensors are operating correctly.
Check that the sensor has been fitted properly.
Check the cleanliness of the heat exchanger.
Check that the installation has been correctly vented
to remove air.
H01.14
Flow temperature has exceeded the maximum
operating value
Flow temperature sensor above normal range (high-
limit thermostat):
Bad connection: check the wiring and connectors.
Incorrectly fitted sensor: check that the sensor has
been correctly fitted.
Faulty sensor: replace the sensor.
No flow or insufficient flow:
Check the circulation (direction, pump, valves).
Check the water pressure.
Check the cleanliness of the heat exchanger.
H01.15
Flue gas temperature has exceeded the maximum
operating value
Maximum flue gas temperature exceeded:
Faulty sensor: replace the sensor.
Check the flue gas outlet system
Check the heat exchanger to ensure that the flue gas
side is not clogged.
H02.00
Reset In Progress
No action required; await reinitialisation.
H02.02
Waiting For Configuration Number
Configuration error or unknown configuration number:
Reset
and
.
H02.03
Configuration Error
Configuration error or unknown configuration number:
Reset
and
.
H02.05
CSU does not match CU type
Configuration error:
Reset
and
.
H02.09
Partial blocking of the device recognized
Blocking input active or frost protection active:
External cause: remove external cause.
Wrong parameter set: check the parameters.
Bad connection: check the connection.
H02.10
Full blocking of the device recognized
Blocking input is active:
External cause: remove external cause.
Wrong parameter set: check the parameters.
Bad connection: check the connection.
H02.12
Release Signal input of the Control Unit from device
external environment
Waiting time release signal has elapsed:
External cause: remove external cause.
Wrong parameter set: check the parameters.
Bad connection: check the connection.
H02.36
Functional device has been disconnected
Communication error with the SCB PCB:
Bad connection with BUS: check the wiring.
No PCB: reconnect PCB or retrieve from memory us
ing auto-detect.
H03.00
Safety parameters level 2, 3, 4 are not correct or
missing
Configuration error or unknown configuration number:
Reset
and
.
Replace the control panel if it is defective.
H03.01
No valid data from CU to GVC received
-
12 Troubleshooting
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