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Troubleshooting
Flashing code /
LC display
F1
F2
F3
Battery symbol ( )
*If empty batteries are not replaced, the radiator thermostat moves to a "valve er-
ror position". This avoids a situation where the set temperature in the room can-
not be reached any more due to a low battery. A valve error position of 15% is set
in the factory settings.
Operating lock (
Short orange flashes
1x long green light
1x long red flash
Short orange flashes
(every 10 s)
Brief steady orange light
(after green or red confir-
mation)
6x long red flashes
Meaning
Valve drive sluggish
Adjustment range too
large
Adjustment range too
small
Battery voltage low
)
Operating lock activated
Radio transmission/at-
tempting to transmit/con-
figuration data is trans-
mitted
Transmission confirmed
Transmission failed or
duty cycle limit reached
Pairing mode active
Batteries flat
Device defective
Solution
Please check whether the
valve pin is stuck.
Please check that the ra-
diator thermostat is fitted
tightly.
Please check whether the
valve pin is stuck.
Replace the device batter-
ies
(see „8 Changing the
batteries" on page
Deactivate the operating
lock via the app.
Wait until the transmis-
sion is completed.
You can continue opera-
tion.
Please try again
(see „9.2
Command not confirmed"
on page 27)
or
(see
„9.3 Duty cycle" on page
27).
Enter the last four digits
of the device serial num-
ber to confirm
(see „6.1
Pairing at the Home Con-
trol Unit/Access Point" on
page
21).
Replace the batteries
„8 Changing the batteries"
on page
26).
Please see the display on
your app or contact your
retailer.
26).
(see
28
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