Troubleshooting Guide; Special Displays - Viessmann Vitotronic 100, GC1 Operating Instructions And User's Information Manual

Troubleshooting guide

Special displays

MService
Mo
Remote control
Without function
Ext. control
Slab curing
Centralized operation
30
Please contact your heating contractor
to arrange a service call.
°C
It is not possible to make settings on
the control unit, only on the remote
control.
This display flashes when you have
pressed a button to which no function
is assigned.
Changeover of the heating program
The heating program which is set on
the control unit has been switched over
by an external control.
If the slab curing function is coded, this
display appears until the function is
terminated.
The setting of the heating and holiday
program is accepted by the heating cir-
cuit for which "centralized operation"
has been coded by your heating
contractor.
Vitocontrol-S, VD2/CT3/CM2
Example
"Normal room temperature" on
the "ts" selector knob can only
be set on the remote control.
Example
if no DHW tank is connected.