11 Troubleshooting
11.1 Error codes
If an error occurs, the control panel displays a message and a
corresponding code.
The control panel status LED flashes and/or is displayed in red.
The control panel can display three types of error codes:
Type of code Description
Colour of the error icon
Axx.xx codes Warning blue
Hxx.xx codes Blockage yellow
Exx.xx codes Lock out red
1. Make a note of the code displayed. The code is important for the
correct and rapid diagnosis of the type of malfunction and for any
technical assistance that may be needed.
2. Switch the boiler off and switch it back on.
3. The boiler starts up again automatically when the cause of the error
has been removed.
If the code is displayed again, correct the problem by following the
instructions in the tables below.
11.2 List of error codes
Tab.47 Lockout codes
Code Description
H02.02 Waiting For Configuration Number
H02.03 Configuration Error
H02.04 Parameter Error
H02.05 CSU does not match CU type
H02.36 Functional device has been disconnected
H02.45 Full Can Connection Matrix
H02.46 Full Can Device Administration
H02.55 Invalid or missing device serial number
Tab.48 Alarm codes
Code Description
A02.18 Object Dictionary Error
11.3
Displaying and clearing the error memory
The error memory stores the 32 most recent errors. You can check the
details of each error and then clear it from the error memory.
To display and clear the error memory:
1. Press the key.
2. Select Error History.
The list of the 32 most recent errors is displayed with the error code,
a short description and the date.
3. Carry out the following actions according to your needs:
Show the details of an error: select the desired error.
To clear the error memory, press and hold the rotary knob.
11 Troubleshooting
46 7703592 - v02 - 14062018
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