20
Controls with the cover open
For cover flap, see page 10.
Vitotronic 200, type KO1B
B
A
C
D
E
FG
14°C
21°C
Fig. 14
A
Fault indicator (red)
B
On indicator (green)
C
TEST key
(only for service purposes)
D
Temperature controller
E
Excess temperature reset
F
ON/OFF switch
G
Cover flap
Vitotronic 200, type KO2B
A B
D
14 °C
21 °C
C
Fig. 15
A
Fault indicator (red)
B
On indicator (green)
C
ON/OFF switch
D
Excess temperature reset
Start-up/shutdown
Starting the heating system
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