Viessmann VITODENS 200-W Service Instructions Manual page 85

Repairs
(cont.)
2. Note the rotational direction of the
mixer motor during its self-test.
Then set the mixer manually to
"Open" again.
Note
The flow temperature sensor must
now capture a higher temperature. If
the temperature drops, either the
motor is turning in the wrong direction
or the mixer set is incorrectly fitted.
Changing the rotational direction of the mixer motor (if required)
Danger
An electric shock can be life-threatening.
Before opening the equipment, switch OFF the ON/OFF switch and mains
voltage, for example at the fuse or the main isolator.
A ON/OFF switch
B Rotational direction switch
1. Remove the lower and upper housing
cover of the extension kit.
Extension kit installation
instructions
Mixer installation instructions
2. Change over the rotational direc-
tion switch:
Switch position I for central heating
return from the left (delivered condi-
tion).
HV
HR
KV
Switch position II for central heating
return from the right.
HV
HR
KV
Troubleshooting
85