Celsius / Fahrenheit
At delivery the display shows °C. If, during operation, the
plus and minus buttons are pushed for more than 3 seconds
the symbols °C and °F alternate. Release the buttons to choose
desired symbol.
Automatic choice of direction
Adaptation to mixing valves with different opening directions
is done through an actuator test to determine whether the valve
opens clockwise or counterclockwise. The test takes a few minutes
and occurs on the fi rst start-up.
The actuator selects and saves the opening direction. Automatic
direction selection only works if there is heat in the system. If the
actuator cannot determine the correct direction, the manual setting
should be selected.
Manual direction selection
First check whether the mixing valve rotates clockwise or counter-
clockwise. Then set the actuator opening angle as follows:
Clockwise operation:
Upon start-up, keep the plus button
pressed in for more than 3 seconds. The display counts down 3-2-1.
The direction is indicated by a red light on the right of the actuator.
The actuator selects clockwise operation and the indicator switches
to a solid light.
Counterclockwise operation:
Upon start-up, keep the minus but-
ton
pressed in for more than 3 seconds. The display counts
down 3-2-1. The direction is indicated by a red light on the left of
the actuator. The actuator selects counterclockwise operation and
the indicator switches to a solid light.
Manual operation
The actuator can be decoupled to allow manual operation of
the mixing valve. This is done by using a screwdriver to rotate
the decoupling screw 90° clockwise to the position with the
hand symbol
, which will then start to fl ash.
Reset to factory settings
When the power is switched on, press the plus and minus buttons
simultaneously for more than 10 seconds. The display counts
down 10-9-8.......-1.
Indication
Above the knob on the actuator, there
are two indicators: hot (red) or cold
(blue).
At normal operation both indicators
shine
When the angle of rotation is
changed, the indicator is blinking in
the turning direction. The blinking
shifts to fi xed light shortly after the
motion has stopped.
ACTUATOR, FUNCTIONS AND SETTINGS
indicators
dec
oupling scr
ew
Fault Indication
The indicators on the actuator are also used to call attention at
fault. The indicators alternates between red and blue light at
the following faults:
• If the opening direction not has been chosen.
• If the automatic choice of direction has failed.
• If the fl ow line sensor suddenly should fall outside the nor-
mal measuring range, which will cause the actuator to stop in
the position it was in before the failure.
Troubleshooting
When the temperature setting in the system changes, it will
take some time, from a couple of hours up to 24 hours, before
the temperature corresponds to the new setting. The time will
depend on the operation of the heating system, dimensioning,
building insulation, etc.
If the heating system is still not considered to be operating
satisfactorily, check the following points:
1. Check that the heating boiler or the accumulator tank is
at the correct temperature.
2. Check that the circulation pump is running.
3. Check that the radiator and shut-off valves are open.
4. Check that the power supply is switched on and the fuses
are intact.
5. Check that the mixing valve operates freely.
6. Check that the actuator has been installed correctly on the
mixing valve axle.
7. Check that there is no air in the system.
8. Check that the control system is correctly installed.
9. Check that the decoupling knob is in the automatic
position.
10. Check that the heating system is correctly installed and
can be operated manually.
Manual operation
Automatic position
Plus button, to
increase a value
Minus button, to
reduce a value
Notch for connection
of supply sensor
Power supply
GB
ENGLISH
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