DeDietrich AWHP 6MR-EMC 24/28 MI HYBRIDE, User Manual

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9.1.4 Blocking of the boiler
A (temporary) blocking mode is a boiler status, resulting from an abnormal
state.
The blocking code for the boiler is accessed via the parameter HM042 in
the Information menu.
Important
The boiler automatically returns to operation once the cause of the
blocking has been removed.
When one of the codes below is displayed, contact the professional
responsible for maintenance of the boiler.
Tab.40 Blocking codes
Blocking code Description
0 Parameter error
1 Maximum flow temperature exceeded
2 Maximum increase of the flow temperature has been exceeded
7 Maximum difference between the flow and return temperature exceeded
10 Blocking input is active
11 Blocking input active or frost protection active
12 Communication error with the boiler PCB
13 Communication error with the PCB
14 Hydraulic pressure too low
15 Gas pressure too low
16
(1)
Configuration error
17
(1)
Configuration error or default parameter table incorrect
18
(1)
Configuration error or PSU PCB not recognised
19
(1)
Configuration error or parameters dF and dU unknown
20
(1)
Configuration procedure active
21 Communication error with the SU PCB
22 No flame during operation
25 Internal fault in the gas/air unit
(1) These lockouts are not stored in the error memory
9.1.5 Locking of the boiler
If the blocking conditions are still present after several start-up attempts,
the boiler becomes locked out (also called error mode). The boiler can
only start operating again once the causes of the lock-out have been
rectified and after pressing the
button.
The locking code can be accessed via the parameter HM041 in the
Information menu.
When one of the codes below is displayed, contact the professional
responsible for maintenance of the boiler.
Tab.41 Error table with error codes
Error code Description
00 Parameter storage unit PSU not found
001 Safety parameters not OK
02 Flow temperature sensor short circuited
9 Troubleshooting
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