GRILLE INSTALLATION
BLOWER COVER INSULATION
Install the blower cover insulation only when the outlet direction is not
specified.
Two blower cover insulations are packed with the indoor unit.
Install the blower cover insulation at the diffuser position shown in Fig. 33.
At this time, use the piping position as the criteria.
Fig. 33
A-A Section view
INSTALLING THE INTAKE GRILLE
(1) Mount the grille hinge wire to the hook shaft as shown in Fig. 34.
Fig. 34
• Latch the grille hinge wire to the hook shaft, and fasten.
Fig. 35 Part A detail view Fig. 36 Part A section view
Grille hinge
wire
(2) Install the hook wire.
• Pass the hook wire through the panel base from the rear side as
shown in Fig. 37, and fasten to the reinforced metal fitting of the
intake grille using a screw.
Fig. 37
Screw
Fig. 38 Section view
2 direction example
(Piping direction)
Blower cover
insulation
Panel
base
Drain
pan
Hook shaft
Hook wire
RFM (grille)
(3) Loosen the screw, put the loop of the hook wire over it, and tighten
the screw again.
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
Figs. 39, 40, and fasten.
Fig. 39
Fig. 40
Hook wire
(1) Remove the control box cover and cover (wire) B and install the con-
nection cord.
Fig. 29
Remote controller cord
Terminal board
(Indoor unit)
Ceiling height
(m)
Normal
High ceiling 1
High ceiling 2
Low ceiling
1
–
–
–
–
2.5 - 3.0
3.0 - 3.5
More than 3.5
Less than 2.5
2
OFF
ON
OFF
ON
3
OFF
OFF
ON
ON
DIP-SW4
5
ELECTRICAL WIRING
HOW TO CONNECT WIRING TO THE TERMINALS
A. For solid core wiring (or F-cable)
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 25 mm (15/16") of expose the solid wire.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using pliers, bend the solid wire to form a loop suitable for the
terminal screw.
(4) Shape the loop wire properly, place it on the terminal board and
tighten securely with the terminal screw using a screwdriver.
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.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using a round terminal fastener or pliers, securely clamp a round
terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten the ter-
minal screw using a screwdriver.
Fig. 26
A. Solid wire
Strip 25 mm (15/16")
Insulation
Loop
B. Strand wire
Strip 10 mm (3/8")
Round
terminal
Wire
Screw with
special washer
Round terminal
Terminal
board
Wire
Screw with
special washer
Round
terminal
HOW TO FIXED CONNECTION CORD AND
POWER CORD AT THE CORD CLAMP
After passing the connection cord and power cord through the insula-
tion tube, fasten it with the cord clamp.
Fig. 27
Insulation tube
Insulation tube Cord clamp
Use VW-1, 0.5 to 1.0 mm thick, PVC tube as the insulation tube.
2. INDOOR UNIT SIDE
WARNING
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.
(2) After wiring is complete, clamp the remote controller cord and con-
nection cord with the cord clamp.
(3) Install the control box cover and cover (wire) B.
Fig. 30
Cover (wire) B
Control box cover
Cord clamp
Connection cord
(To the outdoor unit)
Fig. 31
Ceiling height setting
Set the DIP switch for the ceiling height according to the table below.
Table 6
CAUTION
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.
Remote
controller
Terminal board
OUTDOOR
UNIT
Connection
cord
6
8
1. INSTALLING THE REMOTE CONTROLLER
(1) Open the operation panel on the front of the remote controller, remove
the two screws indicated in the following figure, and then remove the
front case of the remote controller.
Fig. 41
Front case
(back side)
Rear case
Connector
Remote
controller wires
Rear case
Connector
Front case
1. Red
2. White
3. Black
Binder
3. SETTING THE DIP SWITCHES
When using a battery (memory backup)
Fig. 44
Change the DIP switch setting to use batteries. (The DIP switch is not set
to use batteries at the factory.)
Change DIP switch No. 6 from OFF to ON.
If batteries are not used, all of the settings stored in memory will be de-
leted if there is a power failure.
DIP Switch
Screws
2. ROUTING THE REMOTE CONTROLLER WIRES
(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.
(3) If the remote controller wires run through the room, use a tool to cut
away the thin area on the upper center of the front case.
Fig. 43
(Example)
7
REMOTE CONTROLLER
SETTING
CAUTION
1 In order to detect the room temperature
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
board parts directly with your hands.
Temperature sensor
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.
Fig. 42
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.
B. Remote controller setting
The room temperature is detected by the remote controller temperature
sensor.
Indoor unit
(1) When the THERMO SENSOR button is pressed, the lock display
flashes because the function is locked at the factory.
Fig. 45
(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.
TEST RUN
CAUTION
Supply power to the crankcase heater for at least 12 hours
before the start of operation in winter.
(1) Stop the air conditioner operation.
(2) Press the master control button and the fan control button simultane-
ously for 2 seconds or more to start the test run.
Fig. 48
Unit number (usually 0)
Error code
(3) Press the start/stop button to stop the test run.
[SELF-DIAGNOSIS]
When the error indication “E:EE” is displayed, follow the following items to
perform the self-diagnosis. “E:EE” indicates an error has occurred.
1. REMOTE CONTROLLER DISPLAY
(1) Stop the air conditioner operation.
(2) Press the set temperature buttons
simultaneously for 5 sec-
onds or more to start the self-diagnosis.
Refer to the following tables for the description of each error code.
Fig. 49
Test run display
(3) Press the set temperature buttons simultaneously for 5 sec-
onds or more to stop the self-diagnosis.
Table 7
Ex. Self-diagnosis
Indoor unit No. 0 Indoor unit No. 1 Indoor unit No. 2 Indoor unit No. 3
Remote
controller
wire
Remote
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.
The rotary switch is normally set to 0.
(3) DIP switch setting (remote controller)
Change DIP switch No. 3 on the remote controller from OFF to ON.
Indoor unit
Rotary Switch
Remote controller
DIP Switch
2. DUAL REMOTE CONTROLLERS (OPTIONAL)
Two separate remote controllers can be used to operate the indoor units.
(1) Wiring method (indoor unit to remote controller)
Fig. 54
(2) DIP switch setting (remote controller)
Set the remote controller DIP switch Nos. 1 and 2 according to the
following table.
Number of
remote
controllers
Master unit
1 (Normal)
2 (Dual)
ON
OFF
OFF
OFF
DIP-SW No. 1
DIP-SW No. 2
Remote controller
DIP Switch
Number of
remote
controllers
Slave unit
1 (Normal)
2 (Dual)
–
ON
–
ON
DIP-SW No. 1
DIP-SW No. 2
SW3
Table 8
Table 9
Fig. 55
1 2 3 1 2 3 1 2 3
1 2 3
1 2 3
NO.
SW state
Detail
OFF ON
1 ✽
Dual remote controller
2 ✽
setting
3
One unit
✽ Multiple unit Group control setting
4
Heat & Cool model
Cooling only model
Model setting
5 Invalidity Validity ✽ Auto changeover setting
6 Invalidity✽ Validity Memory backup setting
NO.
SW state
Detail
OFF ON
1 Invalidity Validity ✽ Auto restart setting
2 ——✽
Temperature correction
3 ——✽
setting
1 — ✽ — Remote controller setting
2 — ✽ —
Air flow setting
3 — ✽ —
DIP-Switch 1
● Indoor unit
Table 10
● Remote controller
Table 11
[DIP-SWITCH SETTING]
DIP-Switch 4
DIP-Switch
✽ : Factory setting
OPENING THE DUCT
CONNECTION HOLE
Fig. 57
Distribution duct
Distribution duct
Fresh air
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
insulation as shown by the hatched lines in Fig. 57. For
the blocking direction, refer to Fig. 33.
1. DIMENSION
Screw position and connection hole which are fresh air duct and distribu-
tion duct.
Fig. 58
P. D 120
160
45°
45°
ø100
ø70
113
334.2
P. D 88
97
Unit: mm
12-ø3.3 self tapping screw holes (for 4 mm)
2. DISTRIBUTION DUCT AND FRESH AIR DUCT
HOLE PROCESSING
Use the distribution duct hole and fresh air duct hole by removing the
insulation material as shown below.
Fig. 59
Cut
Cut
Cabinet
• Cut off the part (Cabinet) indicated by the arrow in the Fig. 59 with
nippers, needle nose pliers, etc.
Fig. 60
PART NO. 9374318070
Fig. 46
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.
(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.
Fig. 47
1. GROUP CONTROL SYSTEM
A number of indoor units can be operated at the same time using a single
remote controller.
(1) Wiring method (indoor unit to remote controller)
Fig. 51
Cabinet
Knife
Insulation
(Inner box)
10
1
2
3
O
F
F
SW 4
1
2
3
O
F
F
SW 1
Indoor unit PC board
Dip switch
(SW4)
Indoor unit
PC board
Fig. 32
DAY OFF
DELETE SET
ENERGY
SAVE
THERMO
SENSOR
SET BACK
DAY
CLOCK ADJUST
3. AUTO RESTART
• When the air conditioner power was temporarily turned off by a power
failure etc., it restarts automatically after the power recovers.
(Operated by setting before the power failure)
The auto restart function can be
canceled.
(1) DIP switch setting (indoor unit)
Change the DIP switch (SW1-1)
on the indoor unit circuit board
from ON to OFF. The auto restart
function will be canceled.
Indoor unit
DIP Switch
Fig. 56
2. CHECKING DRAINAGE
To check the drain, remove the water cover and fill with 2 to 3rof water as
shown in Fig. 50.
The drain pump operates when operating in the cooling mode.
Fig. 50
Water cover
Drain pipe
Watering pot
9
SPECIAL INSTALLATION
METHODS
CAUTION
1 When setting the rotary switch and DIP switches, do
not touch any other parts on the circuit board directly
with your bare hands.
2 Be sure to turn off the main power.
Indoor unit
Indoor unit
Remote
controller
wire
Fig. 52 Fig. 53
Indoor unit
Master
unit
Slave
unit
• 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.
* 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.
Remote
controller
1. CONNECTION DIAGRAMS
Remote controller
Black
White
Red
Indoor unit
side terminal
Power line
Control line
Error code Error contents
Communication error
(indoor unit
remote controller)
Communication error
(indoor unit outdoor unit)
Room temperature sensor open
Room temperature sensor short-circuited
Indoor heat exchanger temperature sensor open
Indoor heat exchanger temperature sensor short-
circuited
Outdoor heat exchanger temperature sensor
Power source connection error
Float switch operated
Outdoor temperature sensor
Discharge pipe temperature sensor
Model abnormal
Indoor fan abnormal
00
01
02
03
04
05
06
08
09
0A
0c
11
12
Error code Error contents
Outdoor signal abnormal
Excessive outdoor pressure (permanent stop)
Compressor temperature sensor
Pressure switch error
IPM error
CT error
Active filter module (AFM) error
Compressor does not operate
Outdoor unit fan error
Communication error
(inverter multicontroller)
2 way valve sensor error
Expansion valve error
Connection indoor unit error
13
14
15
16
17
18
19
1A
1b
1c
1d
1E
1F
Fig. 28
9374318070_IM_back.p65 2/18/05, 12:58 PM1
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