instructions

68
Troubleshooting
LED (D) , and may manifest itself in the device temporarily
working incorrectly. The device starts working correctly
again after a short period (max. 1 hour).
9.4 Error codes and flashing sequences
Flashing
code / LC
display
Meaning Solution
F1 Valve drive
sluggish
Please check whether
the valve pin is stuck.
F2 Actuating range
too wide
Please check the fas-
tening if the radiator
thermostat
F3 Adjustment range
too small
Please check whether
the valve pin is stuck.
Battery
symbol (
Prg
Offset
AUTO
MANU
BOOST
Mo Tu We Th Fr Sa Su
0
6
12
18
24
)
Battery voltage
low
Replace the batteries
of the device (see “8
Replacing batteries”
on page 65).
Battery
symbol
(
Prg
Offset
AUTO
MANU
BOOST
Mo Tu We Th Fr Sa Su
0
6
12
18
24
) and
---
Valve moved to
error position*
Replace the batteries
of the device (see “8
Replacing batteries”
on page 65).
*If empty batteries are not replaced, the radiator thermostat
moves to a "valve error position". This avoids that the set
temperature in the room cannot be reached any more due to
a low battery. A valve error position of 15 % is set in the factory
settings.
Lock
symbol (
Prg
Offset
AUTO
MANU
BOOST
Mo Tu We Th Fr Sa Su
0
6
12
18
24
)
Operating lock
activated
Deactivate the oper-
ating lock via the app.