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5
1. WIRING SYSTEM DIAGRAM
ELECTRICAL WIRING
INDOOR
14AWG
INDOOR UNIT
(Inter-unit)
HOW TO CONNECT WIRING TO THE TERMINALS
Power lines
TERMINAL
230/208 V
1
A. For solid core wiring
230/208 V
2
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
230/208 V
3
the insulation to about 25 mm (15/16") of expose the solid wire.
DISCON-
CIRCUIT
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
1
NECT
BREAKER
SWITCH
OR FUSE
2
(3) Using pliers, bend the solid wire to form a loop suitable for the
(FIELD
(FIELD
terminal screw.
3
SUPPLY)
SUPPLY)
(4) Shape the loop wire properly, place it on the terminal board and
tighten securely with the terminal screw using a screwdriver.
G
Grounding
line
B. For strand wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 10 mm (3/8") of expose the strand wiring.
WARNING
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
Disconnect switch and circuit breaker for over current pro-
(3) Using a round terminal fastener or pliers, securely clamp a round
tection given in the table below is to be installed between
terminal to each stripped wire end.
the indoor unit and the outdoor unit.
(4) Position the round terminal wire, and replace and tighten the ter-
minal screw using a screwdriver.
Disconnect switch
Circuit breaker (or Fuse)
Round
15A
A. Solid wire
B. Strand wire
terminal
CAUTION
Loop
1 Be sure to refer the above diagram and do correct field
wiring.
Wrong wiring causes malfunction of the unit.
Insulation
2 Check local electrical codes and also any specific
Screw with
special washer
wiring instructions or limitation.
Screw with
Round terminal
special washer
2. INDOOR UNIT SIDE
Terminal
Round
Wire
board
terminal
WARNING
Wire
1 Before starting work, check that power is not being sup-
plied to the indoor unit and outdoor unit.
2 Match the terminal board numbers and connection cord
colors with those of the outdoor unit.
Erroneous wiring may cause burning of the electric
parts.
3 Connect the connection cord firmly to the terminal
board. Imperfect installation may cause a fire.
4 Always fasten the outside covering of the connection
cord with the cord clamp. (If the insulator is chafed,
electric leakage may occur.)
5 Always connect the ground wire.
(1) Remove the control box cover and terminal box cover and install the
connection cord and remote controller cord.
Terminal box cover
Control box cover
8
TEST RUN
Error code
Error contents
Outdoor signal abnormal
13
14
Excessive outdoor pressure (permanent stop)
(1) Stop the air conditioner operation.
(2) Press the master control button and the fan control button simultane-
Compressor temperature sensor
ously for 2 seconds or more to start the test run.
15
16
Pressure switch error
IPM error
17
Test run display
CT error
18
(3) Press the start/stop button to stop the test run.
Active filter module (AFM) error
19
[SELF-DIAGNOSIS]
Compressor does not operate
1A
When the error indication "E:EE" is displayed, follow the following items to
perform the self-diagnosis. "E:EE" indicates an error has occurred.
Outdoor unit fan error
1b
1. REMOTE CONTROLLER DISPLAY
Communication error
1c
(1) Stop the air conditioner operation.
(inverter
multicontroller)
2 way valve sensor error
(2) Press the set temperature buttons
simultaneously for
1d
5 seconds or more to start the self-diagnosis.
Refer to the following tables for the description of each error code.
Expansion valve error
1E
Unit number (usually 0)
1F
Connection indoor unit error
Error code
SU MO TU WE TH FR SA
2. CHECKING DRAINAGE
To check the drain, remove the water cover and fill with 2 to 3rof water as
Ex. Self-diagnosis
shown in figure.
The drain pump operates when operating in the cooling mode.
(3) Press the set temperature buttons
simultaneously for
5 seconds or more to stop the self-diagnosis.
Drain pipe
Error code
Error contents
Communication error
00
(indoor unit
remote controller)
01
Communication error
(indoor unit
outdoor unit)
Room temperature sensor open
02
03
Room temperature sensor short-circuited
Watering pot
Indoor heat exchanger temperature sensor open
04
Indoor heat exchanger temperature sensor short-
05
circuited
Outdoor heat exchanger temperature sensor
06
Power source connection error
08
Float switch operated
09
Outdoor temperature sensor
0A
Discharge pipe temperature sensor
0c
Model abnormal
11
Indoor fan abnormal
12
6
(2) After wiring is complete, clamp the remote controller cord and con-
nection cord with the cord clamp.
OUTDOOR UNIT
BLOWER COVER INSULATION
TERMINAL
1
Install the blower cover insulation only when the outlet direction is not
2
specified.
Two blower cover insulations are packed with the indoor unit.
3
Install the blower cover insulation at the diffuser position shown in figure.
L
At this time, use the piping position as the criteria.
N
2 direction example
Cord clamp
G
Connection cord
Remote controller cord
(To the outdoor unit)
G
Connection
cord
Terminal board
(Piping direction)
OUTDOOR
Terminal board
UNIT
(Indoor unit)
Remote
240 V - 5A
controller
INSTALLING THE INTAKE GRILLE
Ceiling height setting
(1) Mount the grille hinge wire to the hook shaft as shown in figure.
Set the DIP switch for the ceiling height according to the table below.
DIP-SW4
Ceiling height
1
2
3
2.5 - 3.0 m
Normal
–
OFF
OFF
(8.2-9.8 ft)
3.0 - 3.5 m
High ceiling 1
–
ON
OFF
(9.8-11.5 ft)
More than 3.5 m
High ceiling 2
–
OFF
ON
(More than 11.5 ft)
Less than 2.5 m
Low ceiling
–
ON
ON
(Less than 8.2 ft)
Indoor unit PC board
SW 1
SW 4
Dip switch
(SW4)
Indoor unit
PC board
• Latch the grille hinge wire to the hook shaft, and fasten.
CAUTION
Part A detail view
1 If the setting for a low ceiling is selected, the capacity
of the air conditioner decreases slightly.
2 Do not set any switches other than those specified in
this sheet. The air conditioner may not operate correctly
if any switches other than those specified are changed.
9
SPECIAL INSTALLATION
3. AUTO RESTART
• When the air conditioner power was temporarily turned off by a power
METHODS
failure etc., it restarts automatically after the power recovers.
(Operated by setting before the power failure)
CAUTION
The auto restart function can be
1 When setting the rotary switch and DIP switches, do
canceled.
not touch any other parts on the circuit board directly
(1) DIP switch setting (indoor unit)
with your bare hands.
Change the DIP switch (SW1-1)
on the indoor unit circuit board
2 Be sure to turn off the main power.
from ON to OFF. The auto restart
function will be canceled.
1. GROUP CONTROL SYSTEM
A number of indoor units can be operated at the same time using a single
[DIP-SWITCH SETTING]
remote controller.
(1) Wiring method (indoor unit to remote controller)
G Indoor unit
0
1
2
3
Indoor unit No.
Indoor unit No.
Indoor unit No.
Indoor unit No.
1 2 3
1 2 3
1 2 3
1 2 3
Remote
controller
wire
1 2 3
Remote
DIP-Switch 1
controller
(2) Rotary switch setting (indoor unit)
Set the unit number of each indoor unit using the rotary switch on the
indoor unit circuit board.
DIP-Switch 4
The rotary switch is normally set to 0.
(3) DIP switch setting (remote controller)
Change DIP switch 1 No. 3 on the remote controller from OFF to ON.
G Remote controller
Indoor unit
Remote controller
OFF
ON
No.
1
2
3
4
5
6
DIP-
Water cover
switch 1
SW3
ON
Rotary Switch
DIP Switch 1
2. DUAL REMOTE CONTROLLERS (OPTIONAL)
DIP-
Two separate remote controllers can be used to operate the indoor units.
switch 2
(1) Wiring method (indoor unit to remote controller)
Indoor unit
1 2 3
Remote
controller
wire
10
1 2 3
1 2 3
Remote
Master
Slave
controller
unit
unit
(2) DIP switch setting (remote controller)
Set the remote controller DIP switch 1 No. 1 and 2 according to the
following table.
Number of
Master unit
Remote controller
remote
DIP-SW 1 No. 1 DIP-SW 1 No. 2
controllers
OFF
ON
1 (Normal)
ON
OFF
1
2
2 (Dual)
OFF
OFF
3
4
5
6
Number of
Slave unit
remote
DIP-SW 1 No. 1 DIP-SW 1 No. 2
controllers
DIP Switch 1
1 (Normal)
–
–
2 (Dual)
ON
ON
GRILLE INSTALLATION
(2) Install the hook wire.
• Pass the hook wire through the panel base from the rear side as
shown in figure, and fasten to the reinforced metal fitting of the
intake grille using a screw.
Hook wire
RFM (grille)
Panel
base
A
A
Section view
Drain
pan
Blower cover
insulation
A-A Section view
(3) Loosen the screw, put the loop of the hook wire over it, and tighten
the screw again.
A
CAUTION
Install the intake grille hook wire to the grille assem-
bly. If it falls, it may cause injuries.
(4) Bring up the intake grille by pushing it up at an angle as shown in
figures, and fasten.
Part A section view
Hook shaft
Grille hinge
wire
CAUTION
1 When performing hole opening work, be careful not to
damage the drain pan.
2 When connecting the distribution duct, to make the air
flow easily, block the outlet port with the blower cover
Indoor unit
insulation as shown by the hatched lines in the figure.
For the blocking direction, refer to blower cover insu-
OFF
lation figure.
SW1
SW4
1. DIMENSION
DIP Switch
Screw position and connection hole which are fresh air duct and distribu-
tion duct.
P. D 120
P. D 88
SW state
NO.
Detail
OFF
ON
Validity # Auto restart setting
1
Invalidity
# Temperature correction
2
—
—
160 mm (6-5/16")
334.2 mm (13-5/32")
# setting
3
—
—
12-ø3.3 self tapping screw holes (for 4 mm)
1
—
#
—
Remote controller setting
2. DISTRIBUTION DUCT AND FRESH AIR DUCT
#
2
—
—
HOLE PROCESSING
Air flow setting
#
3
—
—
Use the distribution duct hole and fresh air duct hole by removing the
insulation material as shown below.
SW state
Detail
OFF
ON
Cut
#
1
Cabinet
Dual remote controller setting
2
#
# One unit
3
Multiple units
Group control setting
# Heat & cool model
4
Cooling only model
Model setting
5
Invalidity
# Validity
AUTO changeover setting
Cut
# Invalidity
6
Validity
Memory Backup setting
# Validity
1
Invalidity
THERMO SENSOR button setting
# Validity
2
Invalidity
ENERGY SAVE button setting
# Invalidity
• Cut off the part (Cabinet) indicated by the arrow in the figure with
3
Validity
Horizontal airflow direction and swing button setting
4
# Validity
Invalidity
Vertical airflow direction and swing button setting
nippers, needle nose pliers, etc.
# Fixed at OFF
5
Cannot be used.
# Fixed at OFF
6
Cannot be used.
(#: Factory setting)
Knife
Cabinet
OPENING THE DUCT
CONNECTION HOLE
Insulation
(Inner box)
Distribution duct
Fresh air
• Open the holes and cut the insulation with a knife.
* Be careful not to damage the internal parts.
* Be careful not to cut yourself on the cutout in the metal plate.
* Please remove the insulation (inner box) left over after cutting.
• Connect the distribution duct.
Distribution duct
* When mounting the duct, block the gap so that there is no cold air leakage.
* Insulate the duct and cut connection.
CAUTION
The air conditioner cannot take in fresh air by itself. When
connecting a fresh air duct, always use a duct fan.
7
REMOTE CONTROLLER
2. ROUTING THE REMOTE CONTROLLER WIRES
SETTING
(1) Install the remote controller wires to the terminals on the top of the
rear case as shown in the following figure.
(2) Fasten the wires with the binder.
CAUTION
1 In order to detect the room temperature
Temperature sensor
(Example)
correctly when using the temperature
sensor of the remote controller, do not
install the remote controller in a place
where it will be exposed to direct sun-
light or directly below the air outlet of
the indoor unit.
2 When installing the remote controller and cord near a
source of electromagnetic waves, separate the remote
controller from the source of the electromagnetic waves
and use shielded cord.
3 Do not touch the remote controller PC board and PC
Hook wire
board parts directly with your hands.
3. SETTING THE DIP SWITCHES
1. INSTALLING THE REMOTE CONTROLLER
When using a battery (memory backup)
(1) Open the operation panel on the front of the remote controller, remove
Screw
the two screws indicated in the following figure, and then remove the
Front case (back side)
front case of the remote controller.
Jumper
Front case
Rear case
(back side)
DIP switch 2
DAY
CLOCK ADJUST
DAY OFF
ENERGY
THERMO
SET BACK
SAVE
SENSOR
Change the DIP switch setting to use batteries. (The DIP switch is not set
DELETE
SET
to use batteries at the factory.)
Change DIP switch 1 No. 6 from OFF to ON.
If batteries are not used, all of the settings stored in memory will be de-
Screws
Connector
leted if there is a power failure.
When installing the remote controller, remove the connector from the
front case. The wires may break if the connector is not removed and
the front case hangs down.
When installing the front case, connect the connector to the front case.
(2) Install the rear case to the wall, etc. with the two tapping screws.
Refer to the following information to install the remote controller wires.
Remote
controller wires
Front case
Connector
Rear case
Install the remote controller wire so as not to be direct touched with
your hand.
PART NO. 9370937022
4. SETTING THE ROOM TEMPERATURE DETEC-
TION LOCATION
The detection location of the room temperature can be selected from the
following three examples. Choose the detection location that is best for
the installation location.
A. Indoor unit setting (factory setting)
The room temperature is detected by the indoor unit temperature sensor.
1. Red
A
2. White
Indoor unit
3. Black
Binder
When the THERMO SENSOR button is pressed, the lock display flashes
because the function is locked at the factory.
B. Remote controller setting
The room temperature is detected by the remote controller temperature
sensor.
B
Indoor unit
OFF
ON
1
2
3
4
5
6
ON
DIP switch 1
(1) Press the THERMO SENSOR button for 5
seconds or more to unlock the function. The
thermo sensor display flashes and then dis-
appears when the function is unlocked.
(2) Press the THERMO SENSOR button. The thermo sensor display ap-
pears.
(3) Press the THERMO SENSOR button again for 5 seconds or more to
lock the function. The thermo sensor display flashes and then remains
on when the function is locked.
(4) Make sure that the function is locked.
C. Indoor unit/remote controller setting
(room temperature sensor selection)
The temperature sensor of the indoor unit or the remote controller can be
used to detect the room temperature.
C
Indoor unit
(1) Press the THERMO SENSOR button for 5 seconds or more to unlock
the function. The thermo sensor display flashes and then disappears
when the function is unlocked.
(2) Press the THERMO SENSOR button to select the temperature sen-
sor of the indoor unit or the remote controller.
NOTES
If the function to change the temperature sensor is used as shown in
examples A and B (other than example C), be sure to lock the detection
location. If the function is locked, the lock display
will flash when
the THERMO SENSOR button is pressed.
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