18
EN.33.C.152.1405
Assembly instructions | LK Room Temperature Control ICS.2
Backlight display – activation
The room thermostats have a backlit display that
lights up when you press any of the buttons. For
wireless room thermostats, the backlight is off by
default.
This function can be enabled as follows:
1. Press
Set
until flashes, confirm with
Set
.
2. Press the right arrow until
BKLT
(Back Light)
appears in the display, confirm with
Set
.
3. Select
ON/OFF
using the right/left arrow,
confirm with
Set
.
4. The above setting only applies to the indi-
vidual room thermostat.
NOTE:
Remember that an activated backlight affects battery life.
Button lock
It is possible to lock the room thermostat buttons
to prevent unauthorised users from changing the
room thermostat settings.
The button lock is enabled as follows:
1. Press
Set
until flashes, confirm with
Set.
2. Press the right arrow until
LOCK
appears in
the display, confirm with
Set
.
3. Select
ON/OFF
using the right/left arrow,
confirm with
Set
. The padlock icon ap-
pears in the display.
4. The above setting only applies to the indi-
vidual room thermostat.
When the lock is enabled, you unlock the room
thermostat as follows:
1. Press all three buttons simultaneously for at
least 20 seconds.
2. The padlock icon disappears and the room
thermostat reopens.
Checking signal strength*
Before the system is put into operation the first
time, the signal strength should be controlled to
ensure that all thermostats are within transmis-
sion range.
Follow these steps to check the signal strength:
1. Press
Set
until flashes, confirm with
Set.
2. Press the right arrow until
RFST
(Radio Sig-
nal Strength) appears in the display, confirm
with
Set.
3. Read the value. Return to the setup menu
using
Set
.
4. Repeat points 1 to 3 for other room thermo-
stats installed in the system.
You can check the signal strength for all units si-
multaneously to save time.
* Only for thermostat-RF.
Signal strength
Comment
0-20
No signal
21-40
Substandard
41-60
Weak
61-80
Good
81-100
Excellent
Redirect Room Thermostat (RERO)
(Applies to wireless room thermostats)
This function is used if you need to move an al-
ready programmed wireless room thermostat.
This function establishes the shortest possible
path between the room thermostat and the re-
ceiver. The RERO function is enabled as follows:
1. Press
Set
until flashes, confirm with
Set
.
2. Press the right arrow until
RERO
appears in
the display, confirm with
Set
.
3. ROUT flashes until a new route is estab-
lished. When a new route is established,
ROUT appears without flashing along with
which is shown in the display.
NOTE:
This can go very quickly.
If no new route is established within 60
seconds, the display indicates ERR.
4. Press
Set
to return.
