12 Starting up the system
Installer and user reference guide
12
BK+S
Wired remote controller
4P513690-1 – 2018.03
11.5
Opening the controller
11.5.1
Precautions when opening the controller
NOTICE
The controller PCB is mounted into the front casing. When
opening the controller, be careful not to damage the PCB.
NOTICE
When the front and rear casing are separated, make sure
the PCB does not come into contact with dust or moisture.
11.5.2
To open the controller
1
Insert a flat‑head screwdriver into one of the bottom closing
mechanisms and slowly twist it.
12
Starting up the system
CAUTION
Before starting up the system, make sure:
▪ The indoor and outdoor unit wiring is completed.
▪ The switch box covers of the indoor and outdoor units
are closed.
The controller gets its power from the indoor unit. It will start up as
soon as it is connected. For the controller to be operable, therefore
make sure the indoor unit is powered on.
Once the controller is powered, it will automatically start up. If it is
the first and only controller that is connected to the indoor unit, it will
automatically get designated as master controller. For a second
controller to get designated as slave controller, manual action is
required. For instructions, see
"12.2 To designate a controller as
12.1
Master and slave controller
a
b
c
d
a
Outdoor unit
b
Indoor unit
c
Master remote controller
d
Slave remote controller
On the information screen, master/slave status is indicated by the
following icons:
Icon
Description
Master
Slave
"13.4.1 Information screen" on page 13
.
INFORMATION
It is only possible to use a master and a slave controller of
the same type.
INFORMATION
In case digital input adapter BRP7A5* is part of the
system, it is not possible to connect and designate a
second controller. Connecting a second controller when
the system already contains the adapter, will cause the
adapter to go in error.
INFORMATION
If a slave controller does not display the home screen 2
minutes after its designation, turn off the power and check
the wiring.
INFORMATION
After re-designating a controller, the system requires a
power reset.
INFORMATION
The following functions are not available for slave
controllers:
▪ "Auto" operation mode
▪ Individual airflow direction
▪ Filter auto clean
▪ Setback temperature setpoints
▪ Draught prevention
▪ Duty rotation
12.2
To designate a controller as slave
Prerequisite:
A master controller is already connected to the indoor
unit.
1
Connect a second controller.
Result:
It will start up automatically.
2
Wait for a U5 or U8 error to appear on the screen.
3
When the U5 or U8 error appears, press
and keep it
pressed until "2" appears on the screen.
Result:
The controller is now designated as slave.
