OpenTherm connection
N/O
N/C
COM
L
ON
OFF
230 V~
50–60 Hz
10 (4) A
OT
OpenTherm connection
OT
OpenTherm connection
Putting the Device into Operation
Remove front cover of the transmitter and insert 2× 1.5 V AA alkaline
batteries.
Do not use 1.2 V rechargeable batteries.
Insertion of batteries starts the thermostat and activates the display.
If the thermostat is not working properly, please check the polarity of the
batteries, and their state of charge.
If the heating/air-conditioning system is not used for an extended period
of time, it is recommended to turn the switching unit off (move the main
switch to the
position).
Unit Pairing
1. Turn on the receiver by pressing the ON/OFF button on the left side
of the receiver.
2. Then, press and hold the M/A button for 10 seconds until a green
light starts flashing on the receiver.
3. Move the slider on the transmitter to the OFF position and press
and hold the H and A buttons for 3 seconds until the green light on
the receiver stops flashing. The units are now paired; the
will be displayed.
4. If the pairing of the units fails, the
If you want to change the pairing code of the two units, repeat the entire
pairing procedure from step 1 – the pairing code will be rewritten automat-
ically. If the thermostat is not working properly, please check the polarity
of the batteries and whether they are sufficiently charged, or reset the
thermostat by removing and reinserting the batteries.
Testing Wireless Communication between the Units
1. Set a temperature on the transmitter unit several degrees higher
than the current room temperature.
2. The red LED on the switching unit will light up.
3. If the LED does not light up, move the control unit closer to the
switching unit.
N
icon will be displayed instead.
8
icon