Troubleshooting guide
28
Special displays Vitotronic 300-K, MW1S
MService
Mo °C
Please contact your heating contractor
to arrange a service call.
Remote control
It is not possible to make settings on
the control unit, only on the remote
control.
Example
”Normal room temperature” on
the ”ts” selector knob can only
be set on the remote control.
Without function
This display flashes when you have
pressed a button to which no function
is assigned.
Example
if no DHW tank is connected.
Changeover of the heating program
Ext. control
The heating program which is set on
the control unit has been switched
over by an external control.
Slab curing
If the slab curing function is coded,
this display appears until the function
is terminated.
Centralized operation
The setting of the heating and holiday
program is accepted by the heating
circuit for which ”centralized
operation” has been coded by your
heating contractor.
5581 751 v1.1
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