FXSQ20~125M7V1B
VRV System air conditioner
4PW15110-1
Installation and operation manual
7
PRECAUTIONS
■
A single switch can be used to supply power to units on the
same system. However, branch switches and branch circuit
breakers must be selected carefully.
■
For a group control remote controller, choose the remote
controller that suits the indoor unit which has the most functions.
■
Do not ground the equipment on gas pipes, water pipes,
lightning rods or crossground with telephones. Improper
grounding could result in electric shock.
Control by 2 Remote Controllers (Controlling 1 indoor
unit by 2 remote controllers)
When using 2 remote controllers, one must be set to "MAIN" and the
other to "SUB".
MAIN/SUB CHANGEOVER
■
Insert a wedge-head screwdriver into the recess between the
upper and lower part of the remote controller and, working from
the 2 positions, pry off the upper part.
(See figure 15)
(The remote controller PC board is attached to the upper part of
the remote controller.)
■
Turn the main/sub changeover switch on one of the two remote
controller PC boards to "S".
(See figure 20)
(Leave the switch of the other remote controller set to "M".)
Computerised control (forced off and on/off operation)
1
Wire specifications and how to perform wiring
-
Connect input from outside to terminals T1 and T2 of the
terminal board (remote controller to transmission wiring).
(See figure 18)
2
Actuation
-
The following table explains "forced off" and "on/off
operations" in response to input A.
3
How to select forced off and on/off operation
-
Turn the power on and then use the remote controller to
select operation.
-
Set the remote controller to the field set mode. For details,
refer to the chapter "How to set in the field", in the remote
controller manual.
-
When in the field set mode, select mode No. 12, then set the
first code No. to "1". Then set second code (position) No. to
"01" for forced off and to "02" for on/off operation. (forced off
at factory set.)
(See figure 21)
Centralized control
For centralized control, it is necessary to designate the group No. For
details, refer to the manual of each optional controller for centralized
control.
I
NSTALLATION OF THE DECORATION PANEL
Refer to the installation manual attached to the decoration panel.
After installing the decoration panel, ensure that there is no space
between the unit body and decoration panel.
T
EST OPERATION
Refer to the installation manual of the outdoor unit.
The operation lamp of the remote controller will flash when an error
occurs. Check the error code on the liquid crystal display to identify
the trouble. An explanation of error codes and the corresponding
trouble is provided on the "Caution for servicing" sticker on the indoor
units switch box.
PRECAUTIONS
In case something is wrong with the unit and it does not operate, refer
to the malfunction diagnosis label attached to the unit.
NOTE
It is not necessary to designate an indoor unit address
when using group control. The address is
automatically set when the power is activated.
1
Remote controller PC board
2
Factory setting
3
Only one remote controller needs to be changed
Wire specification
Sheathed vinyl cord or cable (2 wire)
Gauge
0.75-1.25 mm
2
Length
Max. 100 m
External terminal
Contact that can ensure the minimum
applicable load of 15 V DC, 10 mA
1
Input A
Forced off
on/off operation
Input "on" stops operation
input off
➜
on: turns on the unit
(impossible by remote controllers)
Input "off" enables control
input on
➜
off: turns off the unit by remote
controller
1
Second code No.
2
Mode No.
3
First code No.
4
Field set mode
1
Drain pumping device (built-in) drain water is removed from the
room during cooling.
2
Air filter (inside suction grill)
3
Air outlet
4
Decoration panel (optional), this is where the room air is drawn
in.
5
Remote controller
1
2
3
5
4
