Panasonic CS-C12UKF-2 User manual

© Panasonic Corporation 2018
Order No: PAPAMY1801030CE
Indoor Unit Outdoor Unit
CS-C12UKF-2 CU-C12UKF-2
Destination
Iran
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the products dealt with in this service information by anyone else could result in serious injury or death.
IMPORTANT SAFETY NOTICE
There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of
manufacturer.

Specifications, designs and contents in this Service Manual are subject to change without notice.
2
TABLE OF CONTENTS
PAGE PAGE
1.Safety Precautions .............................................3
2.Specification .......................................................5
3.Features...............................................................7
4.Location of Controls and Components............8
4.1Indoor Unit ....................................................8
4.2Outdoor Unit .................................................8
4.3Remote Control ............................................8
5.Dimensions .........................................................9
5.1Indoor Unit ....................................................9
5.2Outdoor Unit ...............................................10
6.Refrigeration Cycle Diagram ...........................11
7.Block Diagram ..................................................12
8.Wiring Connection Diagram ............................13
9.Electronic Circuit Diagram ..............................14
10.Printed Circuit Board .......................................15
10.1Indoor Unit ..................................................15
11.Installation Instruction.....................................18
11.1Select the Best Location.............................18
11.2Indoor Unit ..................................................19
11.3Outdoor Unit ...............................................25
12.Operation Control.............................................31
12.1Cooling Operation.......................................31
12.2Soft Dry Operation......................................32
12.3Automatic Operation...................................33
12.4Indoor Fan Speed Control ..........................34
12.5Outdoor Fan Speed Control .......................35
12.6Vertical Airflow Direction Control................36
12.7Horizontal Airflow Direction Control............40
12.8JETSTREAM Operation .............................41
12.9Quiet Operation ..........................................43
12.10Timer Control..............................................44
12.11Sleep Mode Operation ...............................44
12.12Random Auto Restart Control ....................44
12.13Remote Control Signal Receiving
Sound .........................................................44
12.14nanoe-G Operation.....................................45
12.15In-filter Deactivation Operation...................47
12.16ECONAVI Operation ..................................48
13.Protection Control............................................56
13.1Restart Control (Time Delay Safety
Control).......................................................56
13.27 Minutes Time Save Control .....................56
13.360 Seconds Forced Operation ...................56
13.4Starting Current Control .............................56
13.5Freeze Prevention Control .........................57
13.6Compressor Reverse Rotation Protection
Control ........................................................57
13.7Dew Prevention Control .............................57
14.Servicing Mode .................................................58
14.1Auto OFF/ON Button ..................................58
14.2Remote Control Button...............................59
15.Troubleshooting Guide....................................62
15.1Refrigeration Cycle System........................62
16.Disassembly and Assembly Instructions ......64
16.1Indoor Electronic Controllers, Cross Flow
Fan and Indoor Fan Motor Removal
Procedures .................................................64
17.Technical Data ..................................................70
17.1Thermostat Characteristics ........................70
17.2Operation Characteristics...........................71
18.Exploded View and Replacement Parts
List .....................................................................73
18.1Indoor Unit ..................................................73
18.2Outdoor Unit ...............................................76

3
1. Safety Precautions
Read the following “SAFETY PRECAUTIONS” carefully before installation.
Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit
for the model to be installed.
The caution items stated here must be followed because these important contents are related to safety. The meaning of each
indication used is as below. Incorrect installation due to ignoring of the instruction will cause harm or damage, and the
seriousness is classified by the following indications.
WARNING This indication shows the possibility of causing death or serious injury.
CAUTION This indication shows the possibility of causing injury or damage to properties only.
The items to be followed are classified by the symbols:
Symbol with white background denotes item that is PROHIBITED.
Symbol with dark background denotes item that must be carried out.
Carry out test running to confirm that no abnormality occurs after the installation. Then, explain to user the operation, care
and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.
This appliance is not intended for accessibility by the general public.
WARNING
1. Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit on veranda of a high rise building, child
may climb up to outdoor unit and cross over the handrail causing an accident.
2. Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet
with other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.
3. Do not tie up the power supply cord into a bundle by band. Abnormal temperature rise on power supply cord may happen.
4. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
5. Do not sit or step on the unit, you may fall down accidentally.
6. Keep plastic bag (packaging material) away from small children, it may cling to nose and mouth and prevent breathing.
7.
When installing or relocating air conditioner, do not let any substance other than the specified refrigerant, eg. air etc mix into
refrigeration cycle (piping). Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion,
injury etc.
8. Do not add or replace refrigerant other than specified type. It may cause product damage, burst and injury etc.
9. Engage authorized dealer or specialist for installation. If installation done by the user is incorrect, it will cause water leakage, electrical
shock or fire.
10. Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electrical shock or fire.
11. Use the attached accessories parts and specified parts for installation. Otherwise, it will cause the set to fall, water leakage, fire or
electrical shock.
12. Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly
done, the set will drop and cause injury.
13. For electrical work, follow the local national wiring standard, regulation and this installation instruction. An independent circuit and single
outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.
14.
Do not use joint cable for indoor/outdoor connection cable. Use the specified indoor/outdoor connection cable, refer to instruction
CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable so that no external
force will have impact on the terminal. If connection or fixing is not perfect, it will cause heat up or fire at the connection.
15. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will
cause fire or electrical shock.
16.
This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD),
with sensitivity of 30mA at 0.1 sec or less. Otherwise, it may cause electrical shock and fire in case of equipment breakdown or
insulation breakdown.
17.
During installation, install the refrigerant piping properly before running the compressor. Operation of compressor without fixing
refrigeration piping and valves at opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in
explosion, injury etc.
18.
During pump down operation, stop the compressor before remove the refrigeration piping. Removal of refrigeration piping while
compressor is operating and valves are opened will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in
explosion, injury etc.

4
WARNING
19. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare
may break and cause refrigerant gas leakage.
20. After completion of installation, confirm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts
with fire.
21. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when the refrigerant contacts with fire.
22. This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and telephone.
Otherwise, it may cause electrical shock in case of equipment breakdown or insulation breakdown.
CAUTION
1. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding
of the unit, it may cause fire.
2. Do not release refrigerant during piping work for installation, re-installation and during repairing a refrigeration parts.
Take care of the liquid refrigerant, it may cause frostbite.
3. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
4. Do not touch the sharp aluminium fin, sharp parts may cause injury.
5. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the
furniture.
6. Select an installation location which is easy for maintenance.
7.
Power supply connection to the room air conditioner.
Use power supply cord 3 x 1.5 mm2type designation 60245 IEC 57 or heavier cord. Connect the power supply cord of the air conditioner
to the mains using one of the following method. Power supply point should be in easily accessible place for power disconnection in case
of emergency. In some countries, permanent connection of this air conditioner to the power supply is prohibited.
1) Power supply connection to the receptacle using power plug.
Use an approved 15/16A power plug with earth pin for the connection to the socket.
2) Power supply connection to a circuit breaker for the permanent connection.
Use an approved 16A circuit breaker for the permanent connection. It must be a double pole switch with a minimum 3.0 mm contact
gap.
8. Installation work.
It may need two people to carry out the installation work.

5
2. Specification
Model Indoor CS-C12UKF-2
Outdoor CU-C12UKF-2
Performance Test Condition NEW JIS
Power Supply Phase, Hz Single, 50
V 220
Cooling
Capacity
kW 3.51
BTU/h 12000
kJ/h 12640
Running Current A 5.1
Input Power W 1.10k
EER
W/W 3.19
BTU/hW 10.91
Power Factor % 98
Indoor Noise (H / L) dB-A 41 / 30
Power Level dB 54 / -
Outdoor Noise (H / L)
dB-A 51 / -
Power Level dB 66 / -
Max Current (A) / Max Input Power (W) 7.4 / 1.60k
Starting Current (A) 26.0
Compressor
Type Hermetic Motor
Motor Type Induction (2-poles)
Output Power W 950
Indoor Fan
Type Cross-Flow Fan
Material ASG20K1
Motor Type DC Motor (8-poles)
Input Power W 46.2
Output Power W 40
Speed
QLo rpm 780
Lo rpm 850
Me rpm 1030
Hi rpm 1210
SHi rpm 1330
Outdoor Fan
Type Propeller Fan
Material PP Resin
Motor Type AC Motor (4-poles)
Input Power W 86.9
Output Power W 46
Speed Hi rpm 1000
Moisture Removal L/h (Pt/h) 2.0 (4.2)
Indoor Airflow
QLo m3/min (ft3/min) 7.0 (247)
Lo m3/min (ft3/min) 7.7 (272)
Me m3/min (ft3/min) 9.5 (335)
Hi m3/min (ft3/min) 11.2 (395)
SHi m3/min (ft3/min) 12.5 (441)
Outdoor Airflow Hi m3/min (ft3/min) 39.0 (1380)

6
Model
Indoor CS-C12UKF-2
Outdoor CU-C12UKF-2
Refrigeration
Cycle
Control Device Capillary Tube
Refrigerant Oil cm3FV50S (670)
Refrigerant Type g (oz) R22, 950 (33.5)
Dimension
Height (I/D / O/D) mm (inch) 295 (11-5/8) 619 (24-3/8)
Width (I/D / O/D) mm (inch) 919 (36-3/16) 824 (32-15/32)
Depth (I/D / O/D) mm (inch) 199 (7-27/32) 299 (11-25/32)
Weight Net (I/D / O/D) kg (lb) 9 (20) 32 (71)
Piping
Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2)
Standard length m (ft) 5.0 (16.4)
Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6)
I/D & O/D Height different m (ft) 15 (49.2)
Additional Gas Amount g/m (oz/ft) 10 (0.1)
Length for Additional Gas m (ft) 7.5 (24.6)
Drain Hose
Inner Diameter mm 16.0
Length mm 650
Indoor Heat
Exchanger
Fin Material Pre Coat
Fin Type Slit Fin
Row x Stage x
FPI 2 x 15 x 17
Size (W x H x L) mm 610 x 315 x 25.4
Outdoor Heat
Exchanger
Fin Material Blue Coated
Fin Type Slit Fin
Row x Stage x
FPI 2 x 28 x 17
Size (W x H x L) mm 25.4 x 588 x 775.4:795.3
Air Filter
Material Polypropelene
Type One-touch
Power Supply Indoor
Power Supply Cord A 15
Thermostat -
Protection Device 2-Stage Overload Protector
Dry Bulb Wet Bulb
Indoor Operation Range
Maximum
°C (°F) 32 (89.6) 23 (73.4)
Minimum
°C (°F) 20 (68) 11 (51.8)
Outdoor Operation Range
Maximum
°C (°F) 55 (131) 31 (87.8)
Minimum
°C (°F) 16 (60.8) 11 (51.8)
* Applicable for new remote control for temperature range (20°C ~ 30°C).
1. Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°F Wet Bulb) and outdoor air
temperature of 35°C Dry Bulb (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb)
2. Specifications are subjected to change without prior notice for further improvement.

7
3. Features
Air Purifying System with nanoe-G
oDeactivates and removes bacterial, viruses and mould.
Long Installation Piping
oLong piping up to 20 meters.
Easy to use remote control
Quality Improvement
oRandom auto restart after power failure for safety restart operation
oGas leakage protection
oPrevent compressor reverse cycle
oInner protector to protect compressor
oNoise prevention during soft dry operation
oBlue coated condenser for high resistance to corrosion
Operation Improvement
oQuiet mode to reduce the indoor unit operating sound
oJetstream mode to reach the desired room temperature quickly
o24-hour timer setting

8
4. Location of Controls and Components
4.1 Indoor Unit
Vertical Airflow
Direction Louver
• Do not adjust by hand.
Air Filters
Auto OFF/ON button
• Use when remote control is
misplaced or a malfunction occurs.
nanoe-G Generator
• Do not touch during operation
INDICATOR
Sunlight Sensor and
Remote Control Receiver
Maximum distances: 8m
Horizontal Airflow Direction Louver
• Do not adjust by hand.
Front Panel Aluminium Fin
Human Activity Sensor
POWER
TIMER
JETSTREAM
nanoe-G
ECONAVI
4.2 Outdoor Unit
Air inlet (rear)
A
ir inlet (side)
Air outlet
4.3 Remote Control
Airflow direction adjustment
ECONAVI operation
nanoe-G operation
Transmitter
Operation mode
Sleep mode operation
Quiet operation
OFF/ON
JETSTREAM operation
Temperature setting
Remote control
display
Timer setting
Clock setting
Fan speed selection

9
5. Dimensions
5.1 Indoor Unit
22
<Remote Control Holder>
<Remote Control>
160
59
87
64
Relative position between the indoor unit and the installation plate <Front View>
16.3
264.2
Unit : mm
<Top View>
<Front View>
<Bottom View>
<Rear View>
<Side View>
<Side View>
919
149 139
60 60
199
49
61
49 61
295
GAS SIDE
LIQUID SIDE
Left piping
hole Air outlet
direction
Right piping
hole
Air inlet
direction
497
266
128
Right
piping
hole
128
266
Left
piping
hole
Installation
plate
Indoor unit
external
dimensions
line
B
A
C
PIPE
HOLE
CENTER
PIPE
HOLE
CENTER
128mm TO
PIPE HOLE
CENTER
128mm TO
PIPE HOLE
CENTER
460 460

10
5.2 Outdoor Unit
<Top View>
<Front View><Side View>
<Side View>
Anchor Bolt Pitch
330 × 540
Space necessary for
installation
100 mm
100 mm
1000 mm
Unit : mm
3-way valve at Gas side
(Low Pressure)
2-way valve at Liquid side
(High Pressure)
)6.26()421(
22
330
619 167
97
69
(20)
62
32
061
045
7.86
428
37 299

11
6. Refrigeration Cycle Diagram
INDOOR OUTDOOR
INTAKE
AIR
TEMP.
SENSOR
PIPE
TEMP.
SENSOR
LIQUID
SIDE
2-WAY
VALVE
3-WAY
VALVE
GAS
SIDE
HEAT EXCHANGER
(EVAPORATOR)
HEAT EXCHANGER
(CONDENSER)
COMPRESSOR
STRAINER
CAPILLARY
TUBE

12
7. Block Diagram
COMP
Outdoor Unit
L
N
2
FM
1
SC
RY-PWR
SINGLE PHASE POWER SUPPLY
FAN MOTOR
TEMP. FUSE
102ºC (250V 3A)
FUSE301
UVA301
Indoor Unit
M
OLP

13
8. Wiring Connection Diagram
RY-PWR
CN–CLN
(GRN)
CN–STM1
(WHT)
CN–STM2
(YLW)
CN–STM3
(BLU)
CN–TH
(RED)
CN–MSENS
(BLU)
CN–SENS1
(WHT)
CN–SENS1
(YLW)
CN–SENS2
(YLW)
CN–SENS2
(YLW)
CN–MSENS
(BLU)
CN1
(WHT)
GND
CN2
G
BL
HIGH VOLTAGE
POWER SUPPLY
MINUS ION
GENERATOR
1
1
5
1
5
1
5
1
5
1
BR
R
O
Y
P
5
1
1
1
1
4
4
8
1
110
11
1
1
1
4
4
GR
GR
GR
GR
44
33
3
W
W
W
W
Y/G
TERMINAL
BOARD
GROUNDING
TERMINAL
L
N
1
1
4
7
4
7
2
AC303 (WHT)
AUTO SW
(SW01)
FUSE301
T3.15A L250V
GROUNDING
TERMINAL
RECTIFICATION
CIRCUIT
ELECTRONIC
CONTROLLER
(ECO SENSOR)
ELECTRONIC
CONTROLLER
(ECO SENSOR)
ELECTRONIC CONTROLLER (COMPARATOR)
SUCTION TEMP. SENSOR (THERMISTOR)
PIPING TEMP. SENSOR (THERMISTOR)
ELECTRONIC CONTROLLER
(MAIN)
NOISE FILTER
CIRCUIT
G301 (GRN)
EVAPORATOR
FAN MOTOR
CN–FM
(WHT)
CN–RCV
(YLW)
CN–RCV (WHT) CN–DISP (WHT)
LIGHT SENSOR
ELECTRONIC CONTROLLER
(RECEIVER)
ELECTRONIC CONTROLLER
(DISPLAY)
CN–DISP
(YLW)
BL
W
G
Y/G
R
BL
W
WWWWW WWWWWWW
B
Y
BR
W
W
W
4
1
4
TEMP. FUSE
102°C (250V 3A)
TEMP. FUSE
102°C (250V 3A)
SINGLE
PHASE
POWER
SUPPLY
W
W
W
t°
t°
REMOTE CONTROLLER
M
M
1
5
M
BR
R
O
Y
P
BR
R
O
Y
P
UP DOWN
LOUVER MOTOR
(INNER)
UP DOWN
LOUVER MOTOR
(OUTER)
LEFT RIGHT
LOUVER MOTOR
PL
M
COMPRESSOR
FAN MOTOR
RED
BLUE
BLUE
YELLOW
GRAY
RED
YELLOW
CAPACITOR
CAPACITOR
BLUE
BLUE
O.L.P
O.L.P
OR
1
1
32
M
1~
M
1~
TRADEMARK
COMPRESSOR TERMINAL
THE PARENTHESIZED
LETTER IS INDICATED
ON TERMINAL COVER
RED
(RED)
OR (S)
YELLOW
(YEL) OR (C)
BLUE
(BLU)
OR (R)
REMARKS
BL : BLACK
B : BLUE
BR : BROWN
G/GRN : GREEN
O : ORANGE
P : PINK
R : RED
W/WHT : WHITE
Y/G : YELLOW / GREEN
Y/YLW : YELLOW
GR : GRAY
12 TERMINAL BOARD
Resistance of Outdoor Fan Motor Windings
Resistance of Compressor Windings
MODEL CU-C12UKF-2 MODEL CU-C12UKF-2
CONNECTION ACXA92-00120 CONNECTION 2PS206D3BB06
BLUE-YELLOW 137 ΩC-R 2.318 Ω
YELLOW-RED 65 ΩC-S 2.750 Ω
Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature.

14
9. Electronic Circuit Diagram
COMPRESSOR
FAN MOTOR
RED
BLUE
BLUE
YELLOW
GRAY
RED
YELLOW
CAPACITOR
CAPACITOR
BLUE
BLUE
O.L.P
O.L.P
OR
1
1
32
M
1~
M
1~
RY-PWR
Y/G
TERMINAL
BOARD
GROUNDING
TERMINAL
L
N
1
1
4
7
2
AC303 (WHT)
AUTO SW
(SW01)
FUSE301
T3.15A L250V
GROUNDING
TERMINAL
RECTIFICATION
CIRCUIT
ELECTRONIC CONTROLLER
(MAIN)
NOISE FILTER
CIRCUIT
G301 (GRN)
EVAPORATOR
FAN MOTOR
CN–FM
(WHT)
BL
W
G
Y/G
R
BL
W
B
Y
BR
TEMP. FUSE
102°C (250V 3A)
TEMP. FUSE
102°C (250V 3A)
SINGLE
PHASE
POWER
SUPPLY
PL
CN–STM1
(WHT)
1
5
1
5
M
BR
R
O
Y
P
UP DOWN
LOUVER MOTOR
(OUTER)
CN–STM2
(YLW)
1
5
1
5
M
BR
R
O
Y
P
LEFT RIGHT
LOUVER MOTOR
CN–STM3
(BLU)
1
5
1
BR
R
O
Y
P
5
M
UP DOWN
LOUVER MOTOR
(INNER)
CN–TH
(RED)
1
4
SUCTION TEMP. SENSOR (THERMISTOR)
PIPING TEMP. SENSOR (THERMISTOR)
t°
t°
CN–MSENS
(BLU)
CN–SENS1
(WHT)
CN–SENS1
(YLW)
CN–SENS2
(YLW)
CN–SENS2
(YLW)
CN–MSENS
(BLU)
1
1
1
1
1
1
4
GR
GR
GR
GR
44
33
3
W
W
W
ELECTRONIC
CONTROLLER
(ECO SENSOR)
ELECTRONIC
CONTROLLER
(ECO SENSOR)
ELECTRONIC CONTROLLER (COMPARATOR)
W
W
W
M
1
1
4110
CN–RCV (WHT) CN–DISP (WHT)
LIGHT SENSOR
ELECTRONIC CONTROLLER
(RECEIVER)
ELECTRONIC CONTROLLER
(DISPLAY)
WWWWW WWWWWWW
12
TERMINAL BOARD
48
1
CN1
(WHT)
GND
CN2
G
BL
HIGH VOLTAGE
POWER SUPPLY
MINUS ION
GENERATOR
1
W
W
W
W
1
4
4
CN–DISP
(YLW)
CN–RCV
(YLW)
Sensor (Thermistor)
Characteristics
70
60
50
40
30
20
10
0-10 0 10
Temperature (ºC)
Resistance (kΩ)
20 30 40 50
1
2
1
2
Pipe Temp. Sensor
Intake Air Temp. Sensor
REMOTE CONTROLLER
CN–CLN
(GRN)
5V
12V
R09
1k
R08
56k
R06
10k
R10
2SB1188Q
B1
C20
1000p
50V C24
25V
B1
C23
0.1u
C
B
C
E
B
E
Q09
FUSE01
32V
−32V
−2A
47K
4.7K
RT1N436C
Q06
50V
100mA
R73
10k
R75
10k
R72
22k
5V–2
5V
Q11
RSR025P03
2.5A
D
S
G
G2
5V–
5V– 5V–
1
2
3
IC201
GP1UM262R
R209
47
SEN201
NJL7502L
GND–A
GND–A
GND–A
GND GND
R214
1.0k
1%
C201
47u
6.3V
KRE
C202
0.01u
16V
KB
R210
R211
JP201
JP202
JP203
JP204
R212
R213
C
E
4
VOUT
VCC
GND
5
1
2
3
4
5
6
7
16
15
14
13
12
11
10
12V
IC02
12V
12V
B1HBGFF00026
IC03
1
2
3
4
5
6
7
16
15
14
13
12
11
10
5V
B1HBGFF00026
R05
43
1/2W
C08
0.1u
B1
C04
0.1u
16V
R33
15k
R30
20k
R04
43
1/2W
C342
NONE
C306
10u
50V
VZ
R305
7.5k
1/8W
PC303
EL816(C) (ELJ)
1
23
4
Z
Z
Z
Z
Z
GND–A
GND–A
Q1
5V 13V
13V
LED204
LED205
LED201
LED202
LED203
R221 R204
R202
R201
R203
R205
R214
AK
AK
AK
A
C
B
E
K
AK
R222
12V B1
C22
0.1u
16V
R13
NONE
C50
NONE
B1
C21
0.1u
25V
RM40
1M
1%
12V
9
COMMON
GND
8
IC02
12V
9
COMMON
GND
8

15
10. Printed Circuit Board
10.1 Indoor Unit
10.1.1 Main Printed Circuit Board
RY-PWR
AC303 (WHT)
G301 (GRN)
CN-FM
SW01
CN-MSENS
CN-STM2
CN-STM3
CN-STM1
CN-CLN
CN-TH
CN-DISP
CN-RCV
JX02 (Random Auto Restart Enable/Disable)

16
10.1.2 Indicator Display Printed Circuit Board
CN-DISP
10.1.3 Receiver Printed Board
CN-RCV
10.1.4 High Voltage Power Supply Printed Circuit Board
R22
C11
ZD1
D4
D5
D8
R5
Q5
J2
PbF
Q4
R7
D7
R20
R15
C7
R13
R26
R28
T11
Q8
R21
F1
Q1
T3
R4
R1
R12 Q7 Q6
R11
C1
R8
R2
C5
Q3 T7
C6
D3
R6 C4
T4 T5
ZD2
T2
C12
R23
R19 C3 R3
R10
Q2
T12
T8 J1
T10
T9
C8
GND
CN-1 CN-2

17
10.1.5 Comparator Printed Circuit Board
CN-MSENS
CN-SENS2 CN-SENS1
10.1.6 Human Activity Sensor Printed Circuit Board

18
11. Installation Instruction
11.1 Select the Best Location
11.1.1 Indoor Unit
Do not install the unit in excessive oil fume area
such as kitchen, workshop and etc.
There should not be any heat source or steam
near the unit.
There should not be any obstacles blocking the air
circulation.
A place where air circulation in the room is good.
A place where drainage can be easily done.
A place where noise prevention is taken into
consideration.
Do not install the unit near the door way.
Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles.
Installation height for indoor unit must be at least
2.5 m.
11.1.2 Outdoor Unit
If an awning is built over the unit to prevent direct
sunlight or rain, be careful that heat radiation from
the condenser is not obstructed.
There should not be any animal or plant which
could be affected by hot air discharged.
Keep the spaces indicated by arrows from wall,
ceiling, fence or other obstacles.
Do not place any obstacles which may cause a
short circuit of the discharged air.
If piping length is over the [piping length for
additional gas], additional refrigerant should be
added as shown in the table.
Model
Horse
Power
(HP)
Piping size Std.
Length
(m)
Max
Eleva-
tion (m)
Min.
Piping
Length
(m)
Max.
Piping
Length
(m)
Addi-
tional
Refri-
gerant
(g/m)
Piping
Length
for add.
gas (m)
Gas Liquid
C12*** 1.5HP
12.7
mm
(1/2")
6.35
mm
(1/4")
5 15 3 20 10 7.5
Example: For C12***
If the unit is installed at 10 m distance, the quantity of
additional refrigerant should be 25 g .... (10-7.5) m x
10 g/m = 25 g.
11.1.3 Indoor/Outdoor Unit Installation
Diagram
It is advisable to avoid
more than 2 blockage
directions. For better
ventilation & multiple-
outdoor installation,
please consult
authorized dealer/
specialist.
Installation plate 1
Sleeve ( )
Bushing-Sleeve ( )
Bend the pipe as
closely on the wall as
possible, but be careful
that it doesn’t break.
Saddle (
)
Putty ( )
(Gum Type Sealer)
Installation parts you
should purchase ( )
Power supply cord ( )
Piping direction Attention not to bend
up drain hose
(Front side)
Right
Right
Rear
Right
bottom Left
Rear Left bottom
Left
• Carry out insulation after
checking for gas leaks and
secure with vinyl tape.
Vinyl tape
Remote control holder fixing screws 6
Remote control holder
5
Remote
control
3
Attaching the remote control holder to the wall
Insulation of piping connections
Vinyl tape (wide) ( )
• Apply after carrying
out a drainage test.
• To carry out the
drainage test,
remove the air filters
and pour water into
the heat exchanger.
(Left and right are identical)
Floor
65 mm
or more
50 mm
or more
2.5 m (min)
100 mm
or more
1000 mm
or more
100 mm
or more
300 mm
or more
Additional drain hose ( )
Gas side piping ( )
Connection cable ( )
Liquid side piping ( )
Control Board cover
This illustration is for explanation purposes only.
The indoor unit will actually face a different way.

19
11.2 Indoor Unit
11.2.1 How to Fix Installation Plate
The mounting wall shall be strong and solid enough to prevent it from the vibration.
34
B
A
C
PIPE
HOLE
CENTER
PIPE
HOLE
CENTER
128mm TO
PIPE HOLE
CENTER
128mm TO
PIPE HOLE
CENTER
C
128 mm
PIPE
HOLE
CENTER
128mm TO
PIPE HOLE
CENTER
A
Wall More than 1Ceiling Wall
More than 1
2screw More
than 2
Measuring
Tape
Installation
plate 1
For best strength of
INDOOR unit installation,
it is highly recommended
to locate “ ” at 5 position
as shown.
266 mm
128 mm
266 mm
128 mm
Indoor unit
Model Dimension
123456
C12*** 515 mm 85 mm 460 mm 460 mm 17 mm 35 mm
The center of installation plate should be at more than 1at right and left of the wall.
The distance from installation plate edge to ceiling should more than 2.
From installation plate center to unit’s left side is 3.
From installation plate center to unit’s right side is 4.
B: For left side piping, piping connection for liquid should be about 5from this line.
: For left side piping, piping connection for gas should be about 6from this line.
1 Mount the installation plate on the wall with 5 screws or more (at least 5 screws).
(If mounting the unit on the concrete wall, consider using anchor bolts.)
oAlways mount the installation plate horizontally by aligning the marking-off line with the thread and using
a level gauge.
2 Drill the piping plate hole with ø70 mm hole-core drill.
oPutting measuring tape at position as shown in the diagram above.
The hole center is obtained by measuring the distance namely 128 mm for left and right hole
respectively. Another method is intersection point of arrow mark extension. The meeting point of the
extension arrow mark is the hole center position.
oDrill the piping hole at either the right or the left and the hole should be slightly slanting to the outdoor
side. (refer to step 11.2.2)

20
11.2.2 To Drill a Hole in the Wall and
Install a Sleeve of Piping
1 Insert the piping sleeve to the hole.
2 Fix the bushing to the sleeve.
3 Cut the sleeve until it extrudes about 15 mm
from the wall.
CAUTION
When the wall is hollow, please be sure to use the
sleeve for tube assembly to prevent dangers
caused by mice biting the connection cable.
4 Finish by sealing the sleeve with putty or
caulking compound at the final stage.
Wall
15 mm
Putty or caulking compound
Sleeve for
tube assembly
Approx. 5 - 7 mm
Bushing for tube assembly
ø70 mm
through hole
Indoor Outdoor