– The coupling incorporated in the mixing valve drive unit
provides for the release of the connection between the
motor and the mixing valve.
– Press firmly on the unlock key on the cover of the drive
unit and keep the key pressed (firmly!).
– Use the setting lever to set the mixing valve in the desi -
After eliminating the problem the mixing valve is set
again to the right position by the control unit in auto -
In case of the breakdown of the
heating mode regulation you can
proceed temporarily as follows:
1. Set the operating mode se -
2. Open the mixing valve by
hand until the desired flow
and room temperatures are
on manu .