Sequence For Recognizing "Heating Element Defect; Controlling The Interior Light Via Door Switch; Recognising The Electrical Door Lock - Dometic RM 8401 Service Instructions Manual

Repair & Maintenance
5.3 Sequence for recognizing
„Heating element defect"
Conditions:
Interior temperature >18°C, corresponding re-
lay is switched on (230V or 12V), door has to be
closed for longer than 5 minutes.
Temperature of reevaporater (a) is recorded.
After 2 hours, the temperature (b) is recorded
again, if the fridge is in the same mode and no
door openings have happened (RMD).
If the temperature difference a-b < 3 °K, the
corresponding heating element error will be in-
dicated.
5.4 Controlling the interior light
via Reed switch
The MES-Electronics uses the X114 and X111 as
well for controlling the Reed switch as well as the
electrical lock. In the Service mode, the electro-
nics will recognize the application of a reed switch,
following the below steps.
Choose step 7 in the service mode
Deactivate D+; open the door
Push temperature button
Close the door (Reed switch will be recognized)
Continue service mode (push temp. button)
The interior light will now be controlled via the
Reed switch.
5.5 Recognising the Electrical
door lock
Optionally, max. two electrical door locks can be
controlled. They are connected to X111 and X114
(Notify, that if there is only one lock this has to
be connected to X111)
In the service mode the electronics will recognize
the locks following the below steps.
Open the door(s)
Choose step 7 in the service mode
Close the door(s)
Activate D+
Continue Service mode with step 6
The locked door will be indicated via LED 5, and
can be unlocked by pushing button 7. If you have
2 electrical
door locks, LED 5 will flash, if one lock is not lok-
ked. (s. pg 9)
The electrical door lock is no option any-
more since 2009. Only a few number of pie-
ces of RM 8xxx models are equipped with
it.
Items 5.4 and 5.5 are not valid for RMD 8xxx
models.
32