DeDietrich OpenTherm, Service Manual

Page: 10 / 16

Settings > Service menu
K
WARNING
Reset the service message after the boiler service has
been carried out. This can be the active message or the
next message.
4
If
zzzz
is displayed in the service menu, the
boiler will not show a service code.
4
The
mleZr
message indicates that a (pre-)
service reset is possible. The message
mleZr Z
,
B
or
c
indicates that service
message
Z
,
B
or
c
can be reset.
4
The boiler determines which service message can be
reset.
Code Meaning
mleZr
Service reset
Only a qualified engineer may carry out the following
operations.
When the
mleZr
message is displayed, you can choose to
either retain the service message or reset it. If no action is taken, the
service message will remain. To reset the service message, proceed
as follows:
1. Press the rotary and push button.
2. Turn the button to
ml[ye5
.
3. Press the button to confirm.
4. The controller will then return to the
zzzz
screen.
Multiple resets are not possible.
Operations to be carried out
K
mleZr
Z
B
c
K
Z
ml[
n0
K
Z
ml[ye5
4. Settings Opentherm Modulating room thermostat
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