Vaillant VR 81 Supplement Manual page 2

Operating concept
The VR 81/2 remote control unit is operated using a con-
trol that works according to the Vaillant "Turn and click"
operating concept.
Turn the control: changes adjustable values
Click the control:
There are two operating levels:
– The operator level, in which you can read off and
change the target room temperature,
– The heating engineer level, which is reserved for the
heating engineer. Used for displaying and adjusting/
changing specific parameters for the heating installa-
tion.
A flashing area in the display indicates parameters that
can be changed.
2
confirms the value
Setting the room temperature
The current room temperature is displayed on the basic
display.
> Turn the control.
The current room temperature disappears. The set tar-
get room temperature appears and flashes. You can now
change the set target room temperature.
> Turn the control anti-clockwise or clockwise to
decrease or increase the target room temperature.
The basic display reappears after five seconds. The new
target room temperature is applied.
Status messages and error messages
1
Fig. 1.3 Display overview
1 Heating appliance maintenance request or heating engineer
level
2 Heating appliance fault
Supplement to the operating and installation manual VR 81 0020124743_00
2