Installation and operation manual
9
FXFQ20~125AVEB
VRV System air conditioners
3P320142-1A – 2012.10
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
1.
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 19)
(The remote controller PC board is attached to the upper part of
the remote controller.)
2.
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
block (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 (switch) 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 16)
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.
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. Refer to the installation manual attached to the outdoor
unit or contact your dealer. See
figure 22
.
M
AINTENANCE
■
Only a qualified service person is allowed to perform
maintenance.
■
Before obtaining access to terminal devices, all power supply
circuits must be interrupted.
■
To clean the air conditioner, be sure to stop operation and turn
the power switch off.
Otherwise, an electric shock and injury may result.
■
Do not wash the air conditioner with water.
Doing so may result in an electric shock.
■
Be careful with scaffoldings.
Caution must be exercised when working in high places.
■
After a long use, check the unit stand and fitting for damage. If
damaged, the unit may fall and cause injury.
■
Do not touch the heat exchanger fins.
The fins are sharp and could result in cutting injuries.
■
When cleaning the heat exchanger, be sure to remove the
control box, fan motor, drain pump and float switch. Water or
detergent may deteriorate the insulation of electronic
components and result in burn-out of these components.
How to clean the air filter
Clean the air filter when the display shows "
" (TIME TO CLEAN
AIR FILTER).
Increase the frequency of cleaning if the unit is installed in a room
where the air is extremely contaminated.
(As a yardstick for yourself, consider cleaning the filter once a half
year.)
If dirt becomes impossible to clean, change the air filter. (Air filter for
exchange is optional.)
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, 1 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
NOTE
When performing field settings or test operation
without attaching the decoration panel, do not touch
the drain pump. This may cause electric shock.
1
Drain pumping device (built-in) drain water is removed from the
room during cooling
2
Air flow flap (at air outlet)
3
Air outlet
4
Remote controller
5
Suction grille
6
Air filter (inside suction grille)
CAUTION
NOTE
Do not wash the air filter with hot water of more than
50°C. Doing so may result in discoloration and/or
deformation.
Do not expose the unit to fire. Doing so may result in
burning.
