2. If the error code reappears, correct the problem by following the
instructions in the error code tables.
Important
Only qualified professionals are authorised to work on the
appliance and system.
The error code remains visible until the problem is solved.
3. Note the error code when the problem cannot be solved and contact
your installer.
10.1.2 Warning
Tab.45 Warning codes
Code
Display text
Description
Solution
A.01.21
Dhw Temp GradLevel3 Maximum Dhw Temperature Gradi
ent Level3 Exceeded
Temperature warning:
Check the flow.
A.02.06
Water Press Warning
Water Pressure Warning active
Water pressure warning:
Water pressure too low; check the water pres
sure
A.02.18
OBD Error
Object Dictionary Error
Configuration error:
Reset CN1 and CN2
See
The data plate for the CN1 and CN2
values.
A.02.37
Uncritic device lost
Uncritical device has been discon
nected
SCB not found:
Bad connection: check the wiring and connec
tors
Faulty SCB: Replace SCB
A.02.45
Full Can Conn Matrix
Full Can Connection Matrix
SCB not found:
Carry out an auto-detect
A.02.46
Full Can Device Adm
Full Can Device Administration
SCB not found:
Carry out an auto-detect
A.02.49
Failed Init Node
Failed Initialising Node
SCB not found:
Carry out an auto-detect
A.02.55
Inval or miss SerNR
Invalid or missing device serial num
ber
Contact your supplier.
A.03.17
Safety check
Periodically safety check ongoing
Safety check procedure active:
No action
10 Troubleshooting
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