Note On The Automatic Flue Gas Temperature Sensor Test; Venting The Boiler - Viessmann VITODENS 200-W Installation And Service Instructions Manual

Further details regarding the individual steps

Note on the automatic flue gas temperature sensor test

Weather-compensated control unit
As soon as the time and date have been
set, the control unit automatically checks
the function of the flue gas temperature
sensor.
The display shows: "Flue gas temp sen-
sor test" and "Active".
Note
If the flue gas temperature sensor is not
positioned correctly, commissioning is
cancelled and fault message A3 is dis-
played (see page 135).

Venting the boiler

B
Commissioning, inspection, maintenance
(cont.)
Constant temperature control unit
Immediately after being switched on, the
control unit automatically checks the func-
tion of the flue gas temperature sensor.
The display shows: "A".
Note
If the flue gas temperature sensor is not
positioned correctly, commissioning is
cancelled and fault message A3 is dis-
played (see page 135).
A
31