7 Troubleshooting
7.1 Anti-hunting
When the boiler is in Anti-short-cycle operating mode, the symbol ?
flashes.
1. Press the "?" key.
The message Operation assured when the restart temperature
will be reached is displayed.
This message is not an error message but an item of
information.
7.2 Messages (Code type Bxx or Mxx)
In the case of failure, the control panel displays a message and a
corresponding code.
1. Make a note of the code displayed.
The code is important for the correct and rapid diagnosis of the
type of failure and for any technical assistance that may be
needed.
2. Switch the boiler off and switch back on.
The boiler starts up again automatically when the reason for the
blocking has been removed.
3. If the code is displayed again, correct the problem by following the
instructions in the table below:
Code
Messages Description Checking / solution
B00 BL.CRC.PSU
The PSU PCB is incorrectly
configured
Parameter error on the PSU PCB
4 Set the type of generator again in the menu
#CONFIGURATION (Refer to the original rating plate)
B01 BL.BOILER MAX
Maximum flow temperature
exceeded
The water flow in the installation is insufficient
4 Check the circulation (direction, pump, valves)
B02 BL.HEATING
SPEED
Maximum increase of the flow
temperature has been exceeded
The water flow in the installation is insufficient
4 Check the circulation (direction, pump, valves)
4 Check the water pressure
4 Check the cleanliness of the heat exchanger
Sensor error
4 Check that the sensors are operating correctly
4 Check whether the boiler sensor has been correctly fitted
B03
BL.EXCH.MAX
Maximum heat exchanger
temperature exceeded
The water flow in the installation is insufficient
4 Check the circulation (direction, pump, valves)
7. Troubleshooting Diematic iSystem For C 330 / C 630 ECO
67
31082018 - 7600691-001-06
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