Indoor Unit Outdoor Unit CS-VE9NKE CS-VE12NKE CU

Order No: RAC1207001CE
Indoor Unit
CS-VE9NKE
CS-VE12NKE
Outdoor Unit
CU-VE9NKE
CU-VE12NKE
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.
PRECAUTION OF LOW TEMPERATURE
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
TABLE OF CONTENTS
PAGE
1. Safety Precautions.............................................3
2. Specification .......................................................5
3. Features ............................................................11
4. Location of Controls and Components .........12
4.1
4.2
4.3
Indoor Unit..................................................12
Outdoor Unit ...............................................12
Remote Control ..........................................12
5. Dimensions .......................................................13
5.1
5.2
Indoor Unit and Remote Control ................13
Outdoor Unit ...............................................14
6. Refrigeration Cycle Diagram...........................15
7. Block Diagram ..................................................16
8. Wiring Connection Diagram............................17
8.1
Indoor Unit..................................................17
PAGE
8.2
Outdoor Unit ...............................................18
9. Electronic Circuit Diagram ..............................19
9.1
9.2
Indoor Unit..................................................19
Outdoor Unit ...............................................20
10. Printed Circuit Board .......................................21
10.1
10.2
Indoor Unit..................................................21
Outdoor Unit ...............................................23
11. Installation Instruction.....................................24
11.1
11.2
11.3
Select the Best Location ............................24
Indoor Unit..................................................25
Outdoor Unit ...............................................30
12. Operation Control.............................................33
12.1
12.2
12.3
Basic Function............................................33
Indoor Fan Motor Operation.......................35
Outdoor Fan Motor Operation ....................39
12.4
12.5
12.6
12.7
12.8
12.9
12.10
12.11
12.12
Airflow Direction..........................................39
Quiet Operation ..........................................41
Powerful Mode Operation...........................41
Timer Control..............................................41
Auto Restart Control ...................................42
Indication Panel ..........................................42
nanoe-G Operation.....................................43
+8/10°C Heat Operation .............................45
AUTO COMFORT and ECONAVI
Operation....................................................46
13. Protection Control............................................53
13.1
13.2
13.3
Protection Control for All Operations..........53
Protection Control for Cooling and Dry
Operation....................................................55
Protection Control for Heating Operation ...56
14. Servicing Mode .................................................59
14.1
14.2
Auto OFF/ON Button (Indoor Unit) .............59
Remote Control Button...............................60
15. Troubleshooting Guide....................................61
15.1
15.2
15.3
15.4
Refrigeration Cycle System........................61
Breakdown Self Diagnosis Function...........63
Self Diagnosis Functions and Points of
Diagnosis....................................................64
Self-diagnosis Method................................68
16. Disassembly and Assembly Instructions ......92
16.1
16.2
Points of Disassembly (Indoor Unit) ...........92
Points of Disassembly (Outdoor Unit) ..... 105
17. Technical Data ............................................... 120
17.1
17.2
Operation Characteristics........................ 120
Sensible Capacity Chart.......................... 128
18. Exploded View and Replacement Parts
List .................................................................. 129
18.1
18.2
Indoor Unit ............................................... 129
Outdoor Unit ............................................ 133
2
1. Safety Precautions




Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.
Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the
power plug and main circuit for the model 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 or servicing 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.
The items to be followed are classified by the symbols:
This symbol denotes item that is PROHIBITED from doing.

Carry out test run to confirm that no abnormality occurs after the servicing. 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.
WARNING
1. Do not modify the machine, part, material during repairing service.
2. If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit.
3. Do not wrench the fasten terminal. Pull it out or insert it straightly.
4. Engage authorized dealer or specialist for installation and servicing. If installation or servicing done by the user is defective, it will cause
water leakage, electrical shock or fire.
5. Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electric shock or fire.
6. Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage, fire
or electrical shock.
7. 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.
8. For electrical work, follow the local national wiring standard, regulation and the 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.
9. This equipment is strongly recommended to install with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD). Otherwise,
it may cause electrical shock and fire in case equipment breakdown or insulation breakdown.
10. Do not use joint cable for indoor/outdoor connection cable. Use the specified indoor/outdoor connection cable, refer to installation instruction
CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable so that no external force
will be acted on the terminal. If connection or fixing is not perfect, it will cause heat up or fire at the connection.
11. 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
heat-up or fire at the connection point of terminal, fire or electrical shock.
12. When install or relocate 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.).
13. Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit at veranda of high rise building, child may climb up to
outdoor unit and cross over the handrail and causing accident.
14. 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 electric shock in case equipment breakdown or insulation breakdown.
15. Keep away from small children, the thin film may cling to nose and mouth and prevent breathing.
16. 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.
17. 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.
18. For R410A models, when connecting the piping, do not use any existing (R22) pipes and flare nuts. Using such same may cause
abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use only R410A materials.
Thickness of copper pipes used with R410A must be more than 0.8mm. Never use copper pipes thinner than 0.8mm.
It is desirable that the amount of residual oil is less than 40 mg/10m.
3
WARNING
19. During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrigeration piping
and valves at opened condition will caused suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc).
20. During pump down operation, stop the compressor before remove the refrigeration piping. (Removal of compressor 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.)
21. After completion of installation or service, confirm there is no leakage or refrigerant gas. It may generate toxic gas when the refrigerant
contacts with fire.
22. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when refrigerant contacts with fire.
23. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
24. Must not use other parts except original parts described in catalog and manual.
25. Using of refrigerant other than the specified type may cause product damage, burst and injury etc.
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. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage
the furniture.
3. 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.
4. Do not touch outdoor unit air inlet and aluminium fin. It may cause injury.
5. Select an installation location which is easy for maintenance.
6. Pb free solder has a higher melting point than standard solder; typically the melting point is 50°F – 70°F (30°C – 40°C) higher. Please use
a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
Pb free solder will tend to splash when heated too high (about 1100°F / 600°C).
7. Power supply connection to the room air conditioner. Connecting 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.
i. Power supply connection to the receptacle using power plug. Use an approved 15/16A (1.0~1.5HP) power plug with earth pin for the
connection to the socket.
ii. Power supply connection to a circuit breaker for the permanent connection. Use an approved 16A (1.0~1.5HP) circuit breaker for the
permanent connection. It must be a double pole switch with a minimum 3.0 mm contact gap.
8. Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigerant parts.
Take care of the liquid refrigerant, it may cause frostbite.
9. Installation or servicing work: It may need two people to carry out the installation or servicing work.
10. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
11. Do not sit or step on the unit, you may fall down accidentally.
12. Do not touch the sharp aluminium fins or edges of metal parts.
If you are required to handle sharp parts during installation or servicing, please wear hand glove.
Sharp parts may cause injury.
4
2. Specification
Model
Indoor
CS-VE9NKE
Outdoor
CU-VE9NKE
Performance Test Condition
Phase, Hz
Power Supply
Cooling
EN 14511
V
220
230
Min.
Mid.
Max.
Min.
Mid.
Max.
Capacity
kW
0.60
2.50
3.00
0.60
2.50
3.00
Running Current
A
—
2.3
—
—
2.2
—
Input Power
W
140
485
790
140
485
790
Annual Consumption
kWh
—
243
—
—
243
—
EER
W/W
—
5.15
—
—
5.15
—
Pdsign
kW
—
—
—
—
2.50
—
SEER
(W/W)
—
—
—
—
8.60
—
Annual Consumption
kWh
—
—
—
—
102
—
—
—
—
—
A+++
—
94
—
—
94
—
Erp
Class
Power Factor
Indoor Noise (H / L / QLo)
Heating
Single, 50
%
—
dB-A
44 / 26 / 23
44 / 26 / 23
Power Level dB
59 / -
59 / -
dB-A
49 / -
49 / -
Outdoor Noise
(H / L)
Power Level dB
Capacity
kW
0.60
3.20
7.60
0.60
3.20
7.70
Running Current
A
—
2.8
—
—
2.7
—
Input Power
W
140
585
2.65k
140
585
2.72k
COP
W/W
—
5.47
—
—
5.47
—
Pdsign
kW
—
—
—
5.60 / 3.20 / 4.70
Tbivalent
°C
—
—
—
2 / -10 / -19
SCOP
(W/W)
—
—
—
6.00 / 5.40 / 4.10
Annual Consumption
kWh
—
—
—
1307 / 830 / 2408
—
—
—
A+++ / A+++ / A+
—
94
—
Erp
warm/
ave./
cold
Class
Power Factor
Indoor Noise (H / L / QLo)
Outdoor Noise
(H / L)
%
64 / -
—
dB-A
44 / 27 / 24
44 / 27 / 24
59 / -
59 / -
dB-A
49 / -
49 / -
Power Level dB
64 / -
64 / -
—
5.00 / 2.37k / 2.11
Max Current (A) / Max Input Power (W)
14.0 / 3.22k
Starting Current (A)
2.8
2.7
Type
Hermetic Motor (Rotary)
Motor Type
Brushless (6-poles)
Output Power
94
Power Level dB
Extr Low Temp.: Capacity (kW) / I.Power (W) / COP
Compressor
64 / -
W
900
5
—
Model
Indoor
CS-VE9NKE
Outdoor
CU-VE9NKE
Type
Cross-flow fan
Material
AS+GF Resin
Motor Type
PWM (8-poles)
Input Power
W
23.6
Output Power
W
40
Indoor Fan
QLo
Lo
Me
Speed
Hi
Shi
Cool
rpm
600
Heat
rpm
640
Cool
rpm
640
Heat
rpm
720
Cool
rpm
960
Heat
rpm
980
Cool
rpm
1110
Heat
rpm
1110
Cool
rpm
1190
Heat
rpm
1110
Outdoor Fan
Type
Propeller Fan + Flat piece
Material
PP
Motor Type
DC Brushless (8-poles)
Input Power
kW
51.61
Output Power
W
40
Cool
rpm
910
Heat
rpm
—
Speed
Hi
Moisture Removal
QLo
Lo
Indoor Airflow
Me
Hi
Shi
Outdoor Airflow
Hi
L/h (Pt/h)
1.5 (3.2)
3
3
3.5 (124)
3
3
4.0 (141)
3
3
4.0 (141)
3
3
5.1 (180)
3
3
8.1 (286)
3
3
8.4 (297)
3
3
10.0 (353)
3
3
10.0 (353)
3
3
11.0 (388)
3
3
10.0 (353)
3
3
33.0 (1165)
3
3
31.5 (1112)
Cool
m /min (ft /m)
Heat
m /min (ft /m)
Cool
Heat
m /min (ft /m)
m /min (ft /m)
Cool
m /min (ft /m)
Heat
m /min (ft /m)
Cool
Heat
m /min (ft /m)
m /min (ft /m)
Cool
m /min (ft /m)
Heat
m /min (ft /m)
Cool
Heat
m /min (ft /m)
m /min (ft /m)
Control Device
Refrigeration
Cycle
31.5 (1112)
Expansion Valve
3
Refrigerant Oil
cm
FV50S (450)
Refrigerant Type
g (oz)
R410A, 1.50k (52.9)
Height(I/D / O/D)
mm (inch)
295 (11-5/8) / 623 (24-1/2)
Width (I/D / O/D)
mm (inch)
890 (35) / 799 (31-1/2)
Depth (I/D / O/D)
mm (inch)
275 (10-7/8) / 299 (11-3/4)
Net (I/D / O/D)
kg (lb)
14.5 (32) / 43 (95)
Pipe Diameter (Liquid / Gas)
mm (inch)
6.35 (1/4) / 9.52 (3/8)
Standard length
m (ft)
5.0 (16.4)
Length range (min – max)
m (ft)
3 (9.8) ~ 15 (49.2)
I/D & O/D Height different
m (ft)
5.0 (16.4)
Additional Gas Amount
g/m (oz/ft)
20 (0.2)
Length for Additional Gas
m (ft)
7.5 (24.6)
Dimension
Weight
Piping
33.0 (1165)
6
Indoor
CS-VE9NKE
Outdoor
CU-VE9NKE
Inner Diameter
mm
16.7
Length
mm
650
Model
Drain Hose
Indoor Heat
Exchanger
Outdoor Heat
Exchanger
Fin Material
Aluminium (Pre Coat)
FPI
26.5 + 17
Fin Material
Aluminium (Pre Coat)
Fin Type
Corrugated Fin
Row x Stage x FPI
2 × 32 × 19.5
Size (W x H x D)
871.6 × 586.24 × 37.8
840.4
mm
Power Supply
Indoor Power Supply
Power Supply Cord
A
Nil
Thermostat
Electronic Control
Protection Device
Electronic Control
DRY BULB
Cooling
Indoor Operation Range
Heating
Cooling
Outdoor Operation Range
Heating
1.
2.
3.
4.
5.
WET BULB
Maximum
32
23
Minimum
16
11
Maximum
30
—
Minimum
16
—
Maximum
43
26
Minimum
-10
—
Maximum
24
18
Minimum
-20
—
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).
Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb
(44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb).
Heating low temperature capacity, Input Power and COP measured at 230 V, indoor temperature of 20°C, outdoor 2/1°C.
Heating extreme low temperature capacity, Input Power and COP measured at 230 V, indoor temperature of 20°C, outdoor -7/-8°C.
Specifications are subjected to change without prior notice for further improvement.
7
Model
Indoor
CS-VE12NKE
Outdoor
CU-VE12NKE
Performance Test Condition
Phase, Hz
Power Supply
kW
220
230
Min.
Mid.
Max.
Min.
Mid.
Max.
0.60
3.50
4.00
0.60
3.50
4.00
Running Current
A
—
4.1
—
—
3.9
—
Input Power
W
140
880
1.10k
140
880
1.10k
Annual Consumption
kWh
—
440
—
—
440
—
EER
W/W
—
3.98
—
—
3.98
—
Pdsign
kW
—
—
—
—
3.50
—
SEER
(W/W)
—
—
—
—
8.50
—
Annual Consumption
kWh
—
—
—
—
145
—
—
—
—
—
A+++
—
—
97
—
—
97
—
Erp
Class
Power Factor
Indoor Noise (H / L / QLo)
%
dB-A
45 / 29 / 26
45 / 29 / 26
Power Level dB
60 / -
60 / -
Outdoor Noise
(H / L)
dB-A
50 / -
50 / -
Power Level dB
65 / -
65 / -
Capacity
kW
0.60
4.20
8.30
0.60
4.20
8.40
Running Current
A
—
4.0
—
—
3.8
—
Input Power
W
140
855
3.08k
140
855
3.16k
COP
W/W
—
4.91
—
—
4.91
—
kW
—
—
—
Pdsign
Heating
Single, 50
V
Capacity
Cooling
EN 14511
Erp
warm/
ave./
cold
Tbivalent
°C
—
—
—
2 / -10 / -17
SCOP
(W/W)
—
—
—
5.70 / 5.10 / 4.00
Annual Consumption
kWh
—
—
—
1499 / 1153 / 3203
—
—
—
A+++ / A+++ / A+
97
—
Class
Power Factor
Indoor Noise (H / L / QLo)
Outdoor Noise
(H / L)
%
—
—
45 / 33 / 30
45 / 33 / 30
Power Level dB
60 / -
60 / -
dB-A
50 / -
50 / -
Power Level dB
65 / -
65 / -
—
5.60 / 2.80k / 2.00
Max Current (A) / Max Input Power (W)
15.0 / 3.45k
Starting Current (A)
4.1
3.9
Type
Hermetic Motor (Rotary)
Motor Type
Brushless (6-poles)
Output Power
97
dB-A
Extr Low Temp.: Capacity (kW) / I.Power (W) / COP
Compressor
6.10 / 4.20 / 6.10
W
900
8
—
Model
Indoor
CS-VE12NKE
Outdoor
CU-VE12NKE
Type
Cross-flow fan
Material
AS+GF Resin
Motor Type
PWM (8-poles)
Input Power
W
28.5
Output Power
W
40
Indoor Fan
QLo
Lo
Me
Speed
Hi
Shi
Cool
rpm
660
Heat
rpm
750
Cool
rpm
740
Heat
rpm
870
Cool
rpm
1040
Heat
rpm
1050
Cool
rpm
1190
Heat
rpm
1140
Cool
rpm
1270
Heat
rpm
1140
Outdoor Fan
Type
Propeller Fan + Flat piece
Material
PP
Motor Type
DC Brushless (8-poles)
Input Power
kW
57.29
Output Power
W
40
Cool
rpm
960
Heat
rpm
—
Speed
Hi
Moisture Removal
QLo
Lo
Indoor Airflow
Me
Hi
Shi
Outdoor Airflow
Hi
L/h (Pt/h)
2.0 (4.2)
3
3
4.3 (152)
3
3
5.4 (191)
3
3
5.3 (187)
3
3
6.9 (244)
3
3
9.0 (318)
3
3
9.1 (321)
3
3
10.9 (384)
3
3
10.3 (362)
3
3
11.9 (420)
3
3
10.3 (364)
3
3
34.2 (1208)
3
3
31.5 (1112)
Cool
m /min (ft /m)
Heat
m /min (ft /m)
Cool
Heat
m /min (ft /m)
m /min (ft /m)
Cool
m /min (ft /m)
Heat
m /min (ft /m)
Cool
Heat
m /min (ft /m)
m /min (ft /m)
Cool
m /min (ft /m)
Heat
m /min (ft /m)
Cool
Heat
m /min (ft /m)
m /min (ft /m)
Control Device
Refrigeration
Cycle
31.5 (1112)
Expansion Valve
3
Refrigerant Oil
cm
FV50S (450)
Refrigerant Type
g (oz)
R410A, 1.50k (52.9)
Height(I/D / O/D)
mm (inch)
295 (11-5/8) / 623 (24-1/2)
Width (I/D / O/D)
mm (inch)
890 (35) / 799 (31-1/2)
Depth (I/D / O/D)
mm (inch)
275 (10-7/8) / 299 (11-3/4)
Net (I/D / O/D)
kg (lb)
14.5 (32) / 43 (95)
Pipe Diameter (Liquid / Gas)
mm (inch)
6.35 (1/4) / 9.52 (3/8)
Standard length
m (ft)
5.0 (16.4)
Length range (min – max)
m (ft)
3 (9.8) ~ 15 (49.2)
I/D & O/D Height different
m (ft)
5.0 (16.4)
Additional Gas Amount
g/m (oz/ft)
20 (0.2)
Length for Additional Gas
m (ft)
7.5 (24.6)
Dimension
Weight
Piping
34.2 (1208)
9
Indoor
CS-VE12NKE
Outdoor
CU-VE12NKE
Inner Diameter
mm
16.7
Length
mm
650
Model
Drain Hose
Indoor Heat
Exchanger
Outdoor Heat
Exchanger
Fin Material
Aluminium (Pre Coat)
FPI
26.5 + 17
Fin Material
Aluminium (Pre Coat)
Fin Type
Corrugated Fin
Row x Stage x FPI
2 × 32 × 19.5
Size (W x H x D)
871.6 × 586.24 × 37.8
840.4
mm
Power Supply
Indoor Power Supply
Power Supply Cord
A
Thermostat
Electronic Control
Protection Device
Electronic Control
Cooling
Indoor Operation Range
Heating
Cooling
Outdoor Operation Range
Heating
1.
2.
3.
4.
5.
Nil
DRY BULB
WET BULB
Maximum
32
23
Minimum
16
11
Maximum
30
—
Minimum
16
—
Maximum
43
26
Minimum
-10
—
Maximum
24
18
Minimum
-20
—
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).
Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb
(44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb).
Heating low temperature capacity, Input Power and COP measured at 230 V, indoor temperature of 20°C, outdoor 2/1°C.
Heating extreme low temperature capacity, Input Power and COP measured at 230 V, indoor temperature of 20°C, outdoor -7/-8°C.
Specifications are subjected to change without prior notice for further improvement.
10
3. Features

Inverter Technology
o Wider output power range
o Energy saving
o Quick Cooling
o Quick Heating
o More precise temperature control
o Deice with heating operation (Heat Charge system)

Environment Protection
o Non-ozone depletion substances refrigerant (R410A)

Long Installation Piping
o Long piping up to 15 meters during single split connection only

Easy to use remote control
o Press Individual operation button to ON
o Press OFF button to OFF

Quality Improvement
o Random auto restart after power failure for safety restart operation
o Gas leakage protection
o Prevent compressor reverse cycle
o Inner protector to protect compressor
o Noise prevention during dry operation

Operation Improvement
o Quiet mode to reduce the indoor unit operating sound
o Powerful mode to reach the desired room temperature quickly
o 24-hour timer setting
o +8/10°C HEAT operation

Serviceability Improvement
o Breakdown Self Diagnosis function
11
4. Location of Controls and Components
4.1
Indoor Unit
4.2
Outdoor Unit
4.3
Remote Control
12
5. Dimensions
5.1
Indoor Unit and Remote Control
13
5.2
Outdoor Unit
14
6. Refrigeration Cycle Diagram
15
7. Block Diagram
16
8. Wiring Connection Diagram
8.1
Indoor Unit
17
8.2
Outdoor Unit
18
9. Electronic Circuit Diagram
9.1
Indoor Unit
19
9.2
Outdoor Unit
20
10. Printed Circuit Board
10.1 Indoor Unit
10.1.1
Main Printed Circuit Board
21
10.1.2
Printed Circuit Board
22
10.2 Outdoor Unit
10.2.1
Main Printed Circuit Board
23
11. Installation Instruction
11.1 Select the Best Location
11.1.1









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.
Recommended installation height for indoor unit
shall be at least 2.5 m.
11.1.2





11.1.3
Indoor Unit
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.
Horse
Model Power
(HP)
VE9**
1.0HP
*
VE12*
1.5HP
**
AddiMin.
Max.
Piping
Std.
Max
tional
Piping Piping
Length
Length ElevaRefriLength Length
for add.
gerant
Liquid (m) tion (m)
(m)
(m)
gas (m)
(g/m)
Piping size
Gas
9.52 6.35
mm
mm
(3/8") (1/4")
5
12
3
15
20
10
Example: For VE9***
If the unit is installed at 12 m distance, the quantity of
additional refrigerant should be 40 g .... (12-10) m x
20 g/m = 40 g.
24
Indoor/Outdoor Unit Installation
Diagram
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.
The center of the installation plate should be at more than 495 mm at right and left of the wall.
The distance from installation plate edge to ceiling should more than 80 mm.
From installation plate left edge to unit’s left side is 85 mm.
From installation plate right edge to unit’s right is 95 mm.
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.)
o Always 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.
o The hole center of the right pipe is the meeting point of the following two lines, the 20 mm offset line
from the vertical edge of the installation plate and the horizontally extended line of the side arrow on the
plate. (see figure above).
o The hole centre of the left pipe is the meeting point of the following two lines, the 30mm offset line from
the vertical edge of the installation plate and the horizontally extended line of the side arrow on the plate.
(see figure above).
o Drill the piping hole at either the right or the left and the hole should be slightly slanted to the outdoor
side.
11.2.2
1
2
3
To Drill a Hole in the Wall and
Install a Sleeve of Piping
Insert the piping sleeve to the hole.
Fix the bushing to the sleeve.
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.
25
11.2.3
Indoor Unit Installation
11.2.3.1
For the Right Rear Piping
11.2.3.2
For the Right and Right Bottom
Piping
11.2.3.3
For the Embedded Piping
(This can be used for left rear piping and bottom
piping also.)
26
27
11.2.4
1
2
3
4
Connect the Cable to the Indoor Unit
The inside and outside connection cable can be connected without removing the front grille.
Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5
mm2 flexible cord, type designation 245 IEC 57 or heavier cord.
Bind all the indoor and outdoor connection cable with tape and route the connection cable via the
escapement.
Remove the tapes and connect the connection cable between indoor unit and outdoor unit according to the
diagram below.
Note:
 Secure the connection cable onto the control board with the holder (clamper).
 Ensure the colour of wires of outdoor unit and the terminal Nos. are the same to the indoor’s respectively.
 Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason.
28
11.2.5 Wire Stripping and Connecting Requirement
11.2.6 Cutting and Flaring the Piping
1
2
3
Please cut using pipe cutter and then remove the burrs.
Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused.
Turn the piping end down to avoid the metal powder entering the pipe.
Please make flare after inserting the flare nut onto the copper pipes.
29
11.3 Outdoor Unit
11.3.1

Install the Outdoor Unit
After selecting the best location, start installation
according to Indoor/Outdoor Unit Installation
Diagram.
1 Install at least 3 cm above the ground. Do not
install the unit on the floor.
2 Fix the unit on concrete or rigid frame firmly and
horizontally by bolt (ø10 mm). Install the
outdoor unit in a level position and do not block
the holes. Failure to do so may result in water
leakage or accumulation.
3 When installing at roof, please consider strong
wind and earthquake. Please fasten the
installation stand firmly with bolt or nails.
11.3.2
Connect the Piping
Connecting the Piping to Indoor Unit
Please make flare after inserting flare nut (locate at joint
portion of tube assembly) onto the copper pipe. (In case
of using long piping)
Connect the piping
 Align the center of piping and sufficiently tighten the
flare nut with fingers.
 Further tighten the flare nut with torque wrench in
specified torque as stated in the table.
Do not overtighten, overtightening may cause gas leakage.
Connecting the Piping to Outdoor Unit
Decide piping length and then cut by using pipe cutter.
Remove burrs from cut edge. Make flare after inserting
the flare nut (locate at valve) onto the copper pipe. Align
center of piping to valves and then tighten with torque
wrench to the specified torque as stated in the table.
30
Piping size
Torque
6.35 mm (1/4”)
[18 N•m (1.8 kgf.m)]
9.52 mm (3/8”)
[42 N•m (4.3 kgf.m)]
12.7 mm (1/2”)
[55 N•m (5.6 kgf.m)]
15.88 mm (5/8”)
[65 N•m (6.6 kgf.m)]
19.05 mm (3/4”)
[100 N•m (10.2 kgf.m)]
11.3.3
Evacuation of the Equipment
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND
PIPES in the following procedure.
1
2
3
4
5
6
7
8
Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way
valve.
o Be sure to connect the end of the charging hose with the push pin to the service port.
Connect the center hose of the charging set to a vacuum pump.
Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from
0 cmHg (0 MPa) to –76 cmHg (–0.1 MPa). Then evacuate the air approximately ten minutes.
Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the
gauge does not move after approximately five minutes.
Note : BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.
Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
Tighten the service port caps of the 3-way valve at a torque of 18 N•m with a torque wrench.
Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN”
using a hexagonal wrench (4 mm).
Mount valve caps onto the 2-way valve and the 3-way valve.
o Be sure to check for gas leakage.

-
If gauge needle does not move from 0 cmHg (0 MPa) to –76 cmHg (–0.1 MPa), in step 3 above take the following measure:
If the leak stops when the piping connections are tightened further, continue working from step 3.
If the leak does not stop when the connections are retightened, repair location of leak.
Do not release refrigerant during piping work for installation and reinstallation.
Take care of the liquid refrigerant, it may cause frostbite.
31
11.3.4
1
2
3
4
5
6
Connect the Cable to the Outdoor Unit
Remove the control board cover from the unit by
loosening the screw.
Connection cable between indoor unit and outdoor unit
shall be approved polychloroprene sheathed 4 x 1 .5
mm2 flexible cord, type designation 245 IEC 57 or
heavier cord.
Connect the connection cable between indoor unit and
outdoor unit according to the diagram below.
Secure the connection cable onto the control board with
the holder.
Attach the control board cover back to the original
position with screw.
For wire stripping and connection requirement, refer to
instruction 11.2.5 of indoor unit.
Note:
 Isolating Devices (Disconnecting means) should have minimum 3.0 mm contact gap.
 Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason.
11.3.5
1
2
Piping Insulation
Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation
Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.
If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by
using POLY-E FOAM with thickness 6 mm or above.
32
12. Operation Control
12.1 Basic Function
Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time
passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating
mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and
performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by
the microcomputer at indoor unit that judging the condition according to internal setting temperature and intake air
temperature.
12.1.1
Internal Setting Temperature
Once the operation starts, remote control setting temperature will be taken as base value for temperature shifting
processes. These shifting processes are depending on the air conditioner settings and the operation environment.
The final shifted value will be used as internal setting temperature and it is updated continuously whenever the
electrical power is supplied to the unit.
12.1.2 Cooling Operation
12.1.2.1


12.1.3
12.1.3.1


Thermostat Control
Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -1.5°C continue for 3 minutes.
Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature >
Compressor OFF point.
Dry Operation
Thermostat Control
Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.5°C continue for 3 minutes.
Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature >
Compressor OFF point.
33
12.1.4 Heating Operation
12.1.4.1


Compressor is OFF when Intake Air Temperature - Internal Setting Temperature ≥ +2.0°C continue for 3 minutes.
Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature <
Compressor OFF point.
12.1.5


Thermostat Control
Automatic Operation
This mode can be set using remote control and the operation is decided by remote control setting temperature,
remote control operation mode, indoor intake air temperature and outdoor air temperature.
During operation mode judgment, indoor fan motor (with speed of Lo-) and outdoor fan motor are running for 30
seconds to detect the indoor intake and outdoor air temperature. The operation mode is decided based on below
chart.
Every 30 minutes, the indoor and outdoor temperature is judged.
The Auto Operation Mode shifting will take place whenever operation mode changed from Cooling/Dry to Heating or
vice versa.
34
12.2 Indoor Fan Motor Operation
12.2.1
CS-VE9NKE
Indicates the changeable range using the remote control
COOL DRY Range
COOL / COOL Range
Fan speed: Manual
Normal (with programmed air)
Stop
SSLo
SLo
Quiet
Lo-
Lo
Me-
Me
Hi
O
---
---
(600)
---
640
800
960
1110
O
Airflow stable
Fan
speed:
Auto Normal
1190
Human search
area control
740
Powerful
620  980
Human search
area control
620  980
Cool dry
470  640
O
Powerful
640
Initial airflow
Human search
area control
Powerful
510  980
Airflow stable
Human search
area control
510  980
Fan speed: Manual
740
O
---
---
650
HEAT
850
980
1110
Human search
area control
680  1210
Powerful
850  980
Human search
area control
850  980
Hot Dry
---
640
Fan speed: Manual
Individual
nanoe-G
720
780  1060
680  1110
Powerful
Airflow stable
---
680  1020
Normal
Fan Initial airflow
speed:
Auto
---
860 ~ 960
Powerful
Initial airflow
SHi
Fan speed:
Auto
Normal
O
---
600
---
640
800
960
1110
---
500
Powerful
1190
Individual +8/10°C HEAT
1110
Odor Cut Shift
Below Lo: No shifting
Me and above: -90
Only for the COOL and DRY range
Lo and above, below Me and fan speed auto: -20
* Lock detection: When the rotation speed of 2550rpm and above or below 50rpm is detected for 10 consecutive seconds during the feedback
control, H19 is indicated (the TIMER indicator flashes) if normal rotation speed is not detected even after the retry is performed 7 times.
* Refer to the attached list of “Indoor Unit Fan Operation Status” for the operations of the indoor unit fan while the thermostat is OFF.
35
(1) When the area control is in operation, the minimum rotation speed is limited as outlined below depending on the human position area.
COOL & COOL DRY
HEAT
FULL DRY
Same as the fan speed in the powerful mode. When the airflow is stable, the minimum rotation speed is limited to
“1+2+3” as in the table below.
Same as the fan speed in the powerful mode. In the range where the airflow is stable and the pipe temperature is high,
the minimum rotation speed is limited to “1+3” as in the table below.
The rotation speed is fixed at “1+2+3” as in the table below.
1
Min. rotation speed for each field
The minimum rotation speed is limited based on
the following area information.
Field 2
Field 3
COOL
880
840
COOL DRY
740
700
HEAT
990
970
2 During the ceiling airflow, a correction is performed
for the minimum rotation speed as follows.
Field 2
Field 3
In COOL or COOL
DRY mode
100
Corresponding Area
LM, RM
CM
3 When making the air blow towards human
body/object, a correction is performed for the minimum
rotation speed as follows.
In COOL or COOL
DRY mode
60
36
12.2.2
CS-VE12NKE
Indicates the changeable range using the remote control
COOL DRY Range
COOL / COOL Range
Fan speed: Manual
Normal (with programmed air)
Stop
SSLo
SLo
Quiet
Lo-
Lo
Me-
Me
O
---
---
(660)
---
740
890
1040
O
Outside temperature is below 35°C or Neuro is
stable.
Powerful
Fan Airflow stable
speed:
Auto
Normal
1270
Human search
area control
840
Powerful
720  1060
Human search
area control
720  1060
Cool dry
470  740
O
Powerful
740
Human search
area control
Powerful
510  1060
Airflow stable
Human search
area control
510  1060
Fan speed: Manual
840
O
---
---
750
---
HEAT
960
1040
1140
---
680  1140
Powerful
Human search
area control
680  1290
Powerful
890  1060
Human search
area control
890  1060
Hot Dry
740
Fan speed: Manual
Individual
nanoe-G
870
680  1100
Normal
Airflow stable
---
990 ± 50rpm
Initial airflow
Fan Initial airflow
speed:
Auto
1190
SHi
Outside temperature is 35°C or higher
and Neuro is unstable.
MIN 640 ± 50 ~ 910 ± 50rpm
Initial airflow
Hi
Fan speed:
Auto
Normal
O
---
660
---
740
890
1040
1190
---
500
Powerful
1270
Individual +8/10°C HEAT
1190
* Lock detection: When the rotation speed of 2550rpm and above or below 50rpm is detected for 10 consecutive seconds during the feedback
control, H19 is indicated (the TIMER indicator flashes) if normal rotation speed is not detected even after the retry is performed 7 times.
* Refer to the attached list of “Indoor Unit Fan Operation Status” for the operations of the indoor unit fan while the thermostat is OFF.
37
(1) When the area control is in operation, the minimum rotation speed is limited as outlined below depending on the human position area.
COOL & COOL DRY
HEAT
FULL DRY
Same as the fan speed in the powerful mode. When the airflow is stable, the minimum rotation speed is limited to
“1+2+3” as in the table below.
Same as the fan speed in the powerful mode. In the range where the airflow is stable and the pipe temperature is high,
the minimum rotation speed is limited to “1+3” as in the table below.
The rotation speed is fixed at “1+2+3” as in the table below.
1
Min. rotation speed for each field
The minimum rotation speed is limited based on
the following area information.
Field 2
Field 3
COOL
900
860
COOL DRY
760
720
HEAT
1080
980
2 During the ceiling airflow, a correction is performed
for the minimum rotation speed as follows.
Field 2
Field 3
In COOL or COOL
DRY mode
100
Corresponding Area
LM, RM
CM
3 When making the air blow towards human
body/object, a correction is performed for the minimum
rotation speed as follows.
In COOL or COOL
DRY mode
100
38
12.3 Outdoor Fan Motor Operation
Outdoor fan motor is operated with various fan speeds with compressor RPM. It starts when compressor starts
operation and it stops 30 seconds after compressor stops operation.
12.4 Airflow Direction


There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by
vertical vanes).
Control of airflow direction can be automatic (angles of direction is determined by operation mode, and heat
exchanger temperature) and manual (angles of direction can be adjusted using remote control).
12.4.1
Vertical Airflow
Airflow
direction:
Manual
AUTO
C Range
HEAT
B Range
A Range
1-5: Preset
angle (10-57°)
COOL
COOL/DRY
Vertical Airflow Direction Louver
Air Swing (Airflow direction) Auto
Normal
Human Search
Normal
Powerful
According to each mode determined
40°
57°
10°
Unstable: 10-40°
(Swing)
Initial airflow: 30°
Unstable: Human detecting direction
Stable: 10-35°
(Swing)
Other than initial airflow:
10°
Airflow stable: Ceiling airflow
Same as the
manual
setting in
COOL mode.
10°
39
12.4.2

Horizontal Airflow
Automatic horizontal airflow direction can be set using remote control; the vane swings left and right within the
angles as stated below.
Left vane/right vane
1
2
3
4
5
6
7
During Manual Setting
Human Search
During Auto Setting
Condition
Middle Setting
Right Setting
Left Setting
Normal
Powerful
B Area
Auto
Heating Operation
C Area
Neuro
Balance
0° / 0°
-10° ~ 10° / 10° ~ -10°
-35° ~ -15° / 15° ~ 35°
15° ~ 35° / -35° ~ -15°
0° / 0°
-25° / 25°
25° / -25°
Neuro
Unbalance
Initial
Same with normal neuro unbalance
Balance /
Unbalance
Auto
Manual
Cooling Operation
Manual
A Area
0° / 0°
-30° / 30°
30° / -30°
-40° / -40°
40° / -40°
-40° / 40°
Middle Setting
Right Setting
-40° / 40°
0° / 0°
20° / 20°
-30° / -30°
Left Setting
-40° / 50°
-30° / 0°
0° / -30°
40° / -40°
50° / -40°
0° / 0°
-10° / 10°
10° / -10°
Normal, other than
above
-35° ~ 35° / -35° ~ 35°
-35° ~ 0° / 0° ~ 35°
0° ~ 35° / -35° ~ 0°
Normal
0° / 0°
20° / 20°
-35° / -35°
-35° / 35°
Same with during auto
normal neuro balance
time
40° / -40°
-40° / 40°
Initial Powerful
Dry
Human detection direction
-35° / 0°
Auto
Same as normal cooling auto operation
Manual
Same as normal cooling manual operation
0° / -35°
Human detection direction
35° / -35°
Human detection direction
* Airflow direction during Auto
Field 2
Field 3
40
Corresponding Area
LM, RM
CM
12.5 Quiet Operation

Purpose
o To provide quiet operation compare to normal operation.

Control condition
o Quiet operation start condition
 When “QUIET” button at remote control is pressed.
” shown in LCD of remote control.
 “
o Quiet operation stop condition
 When one of the following conditions is satisfied, quiet operation stops:
 QUIET button is pressed again.
 Stop by OFF/ON button.
 FAN SPEED button is pressed.
 AUTO COMFORT button is pressed.
 ECONAVI button is pressed.
 When fan speed is changed, fan speed follows the setting change.
 When operation mode is changed, resume previous operation setting.
 During quiet operation, if timer “on” activates, quiet operation maintains.
12.6 Powerful Mode Operation

When the powerful mode is selected, the internal setting temperature will shift lower up to 1°C (for Cooling) or
higher up to 1.7°C (for Heating) than remote control setting temperature to achieve the setting temperature
quickly.
12.7 Timer Control


There are 2 sets of ON and OFF timer available to turn the unit ON or OFF at different preset time.
If more than one timer had been set, the upcoming timer will be displayed and will activate in sequence.
12.7.1



ON Timer Control
ON timer 1 and ON timer 2 can be set using remote control, the unit with timer set will start operate earlier than
the setting time.
This is to provide a comfortable environment when reaching the set ON time.
70 minutes before the set time, indoor (at fan speed of Lo-) and outdoor fan motor start operate for 30 seconds to
determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting
time.
From the above judgment, the decided operation will start operate earlier than the set time as shown below.
12.7.2
OFF Timer Control
OFF timer 1 and OFF timer 2 can be set using remote control, the unit with timer set will stop operate at set time.
41
12.7.3

Sleep Timer
Sleep operation is performed according to the delay OFF time (0.5, 1, 2, 3, 5, 7 or 9 hr) and provide comfortable
environment by shifting set temperature.
Heating
Cooling, Dry
A
2hr
3hr
B
*5am
*4am
* According to remote control clock
Temperature Shift
Set temperature (°C)
Status 1
Status 2
Status 3
Status 4
Cooling/Dry
0
+1
+1
+1
Heating
0
-1
-1
-1
Stop condition
- Reached delay time.
- Pressed sleep button to cancel.
- Unit is OFF.
12.8 Auto Restart Control


When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within
three to four minutes (various period of protection control is programmed) after power supply resumes.
This type of control is not applicable during ON/OFF Timer setting.
12.9 Indication Panel
LED
POWER
TIMER
Color
Green
Orange
+8/10°C HEAT
Light ON
Operation ON
Timer Setting ON
Light OFF
Operation OFF Timer Setting OFF
nanoe-G
ECONAVI
Green
Blue
Green
+8/10°C HEAT
Mode ON
+8/10°C HEAT
Mode OFF
nanoe-G
ON
nanoe-G
OFF
ECONAVI ON
ECONAVI OFF
Note:
 If POWER LED is blinking, the possible operation of the unit are Hot Start, during Deice operation, operation
mode judgment, or ON timer sampling.
 If Timer LED is blinking, there is an abnormality operation occurs.
42
12.10
nanoe-G Operation

This operation provides clean air by producing great amount of negative ions and distribute through the
discharge airflow to capture or deactivate molds, bacteria or viruses.

nanoe-G ON/OFF condition
Priority
Item
Output
During Demo mode
1
Two-way communications on remote control
OFF
NANOE-G connector open
NANOE-G error (circuit error & abnormal discharge detection)
2
Inspection mode NANOE-G ON command
ON
Inspection mode NANOE-G OFF command
OFF
No “NANOE-G” setting on the remote control
Operation status: OFF
3
During NANOE-G restart prohibiting time
(Prohibiting time is set in the case of abnormal discharge and room temperature of 40°C
and above. Details will be provided later.)
OFF
During FM OFF; or FM rotation speed is less than 490 rpm
4
Airflow direction is not set to ceiling airflow or
DOWN 
Less than 60 minutes have elapsed
since the start of Powerful
individual fan operation.
ON/OFF
intermittent output
as mentioned
below
Other than above
Airflow direction is ceiling airflow or DOWN
ON

 ON/OFF intermittent output

nanoe-G operation pause condition
o When indoor fan stop (during deice, odor cut control, thermostat off, etc.). nanoe-G operation resume after
indoor fan restarts.
o When indoor intake temperature ≥ 40°C. nanoe-G operation resume after indoor intake temperature ≤ 40°C
continuously for 30 minutes.

Indoor fan control
o During any operation mode combines with nanoe-G operation, fan speed follows respective operation mode.
However, nanoe-G system enabled when fan speed ≥ 490 rpm to ensure proper negative ion distribution,
nanoe-G system disabled when fan speed < 490 rpm.

Airflow direction control
o During any operation mode combines with nanoe-G operation, airflow direction follows respective operation
mode.
o During nanoe-G individual operation, any airflow direction can be combined.

Timer control
o When ON Timer activates during any operation, no change on current operation.
o When OFF Timer activates during any operation, all operation stops and the latest nanoe-G operation status
is saved.

Indicator
o When nanoe-G starts, nanoe-G indicator ON (at Indoor Unit and Remote Control).

Remote Control Receiving Sound
o Normal Operation
o Nanoe-G Operation
o Stop
o Nanoe-G individual Operation
 nanoe-G Operation
 Normal Operation
 nanoe-G individual Operation
 Stop
43
: Beep
: Beep
: Beep
: Long Beep

Power failure
o During nanoe-G individual operation, if power failure occurs, after power resumes, nanoe-G individual
operation resumes immediately.
o During combination operation, if power failure occurs, after power resumes, combination operation resume
immediately.

Error detection control
When nanoe-G indicator blinks, it indicates error listed below:
o nanoe-G connector at main PCB open
 Judgment method
 During nanoe-G operation, nanoe-G connector at main PCB is opened.
 Troubleshooting method
 Connect the connector or stop operation to cancel the blinking.
o Abnormal discharge error
 Judgment method
 During nanoe-G operation, the nanoe-G system has abnormal discharge due to short-circuit caused
by water or dust adhesion and so forth, with Lo-feedback voltage (at microcontroller).
 When abnormal discharge occurred, every 30 minutes the unit supplies power to the nanoe-G
system.
 When abnormal discharge occurs for 24 times continuously, nanoe-G indicator blinks.
o
Troubleshooting method
 Press nanoe-G button or OFF button to stop the operation and check the nanoe-G connector at PCB.
 After that, press nanoe-G button again to confirm the nanoe-G indicator do not blinks.
 The 24 timer counter will be clear after 10 minutes of normal operation or when operation stops.
o
Error reset method
 Press OFF button to OFF the operation.
 Press AUTO OFF/ON button at indoor unit to OFF the operation.
 OFF Timer activates.
 Power supply reset.
44
12.11 +8/10°C Heat Operation





+8/10°C Heat operation provides heating at low setting temperature in unoccupied houses during winter for the
purpose of protecting equipments or housing appliances which may be destroyed by the extreme cold weather.
This operation can be ON by pressing the +8/10°C heat button on the remote control.
Two temperature settings are available, which are;
o 8°C (Pressing TEMP down button at the remote control)
o 10°C (Pressing TEMP up button at the remote control)
During the operation of this mode;
o The indoor fan speed will remain at Hi fan tap all the time included deice process.
o Powerful operation, Auto Comfort, Quiet operation, Econavi operation and Fan Speed selection are disabled.
o Cold draft prevention control is disabled.
Control condition;
NOTE:
+8/10°C HEAT set temperature follows previously fixed set temperature (+8°C or +10°C).
But after battery reset, (default condition) set temperature always start with +8°C.
 Caution!
If the indoor temperature constantly is less than 0°C (Door, windows not close properly), the error code F11 may
occur. This is because in open area, the indoor pipe sensor will misjudge operation condition and will give error code.
45
12.12 AUTO COMFORT and ECONAVI Operation

Area of human availability, activity level and absent is judged based on pulses by using infrared sensor. The
internal setting temperature shift, fan speed, horizontal and vertical airflow direction are adjusted in order to
provide comfort environment while maintain the energy saving level.

AUTO COMFORT start condition:
o When AUTO COMFORT button is pressed.

AUTO COMFORT stop conditions:
o When AUTO COMFORT button is pressed again.
o When unit is OFF by OFF button.
o When unit is OFF when OFF TIMER activates.
o When unit is OFF by AUTO OFF/ON button at indoor unit.
o When POWERFUL, QUIET and ECONAVI operation activates.
o When ◄► button is pressed.
o When FAN SPEED button is pressed.

ECONAVI start condition:
o When ECONAVI button is pressed.

ECONAVI stop conditions:
o When ECONAVI button is pressed again.
o When unit is OFF by OFF button.
o When unit is OFF when OFF TIMER activates.
o When unit is OFF by AUTO OFF/ON button at indoor unit.
o When POWERFUL, QUIET and AUTO COMFORT operation selected.
o When ◄► button is pressed.
o When FAN SPEED button is pressed.
12.12.1 Human Activity Sensor


Area of human availability, activity level and absent is judged based on pulses by using infrared sensor. The
internal setting temperature shift, fan speed and horizontal airflow direction are adjusted in order to provide
comfort environment while maintain the energy saving level.
Human activity judgment is as following:
46
12.12.1.1

Presumption flow of human position.
o Detection outline.
12.12.1.2



Human Activity Level Judgment
Human Activity Level is judged based on the frequency of pulses detected by the infrared sensor within a
timeframe. The activity level will be categorized into High, Normal or Low level.
When a pulse is detected within this timeframe, the status of human presence is judge.
When there is no signal detection continues for 40 minutes or more or the result of activity amount status is "Low"
consecutively for 5 cycles the status of human absence is judged.
12.12.1.5


Human Position Analysis
According to Area of Living, frequency of activity, the system will analyze the human position away from the
indoor unit.
12.12.1.4

Information Log
The signal from Infrared sensor will be log to human activity database for further analysis.
12.12.1.3

Signal Detection
Determination of Presence or Absence
Human presence status shall be determined based on the human presence status of each area.
When all area has been detected absent for more than 120 minutes then it will judge as absence.
47
12.12.1.6

The system is able to judge area of living according to human activity database, classified as following:
o (Zone I ) Living Area - In front of television, dining table, etc.
o (Zone II) Walkway - Human detection is relatively less.
o (Zone III) Non-Living Area - Near windows, wall, etc.
12.12.1.7



Area of Living Classification Judgment
Target Area and Position Judgment
By default, the system will judge the indoor unit installation position according to human activities and will reset
the louver center position:
o Non-Living Area at Position A - Indoor unit is installed at left side of the room, louver center position set to
right side.
o Non-Living Area at Position C - Indoor unit is installed at right side of the room, louver center position set to
left side.
o Other than above - Indoor unit is installed at center of the room, louver position set to center.
Every 4 hours, the Target Area and Position Judgment will restart.
If the indoor unit installation position is set by remote control, the above judgement will be ignored.
12.12.2 Setting Temperature and Fan Speed Shift
 Cooling Dual Sensor
48
12.12.2.1 Demo Mode
The air conditioner starts the operation in the Demo mode as described below when 2 minutes have elapsed after the
protection control was started subsequent to the confirmation of communication error.
(At this time, a strong warning sound is emitted for 3 minutes if the test run memory is “incomplete”.)
Condition to stop the mode
The operation is stopped by turning off the air conditioner on the remote control or pressing the EMERGENCY
OPERATON switch during the Demo mode.
(“TIMER” LED flashes.)
Zone B
Transition time to Demo
Mode
Airflow Unit Operation Mode (Normal Operation)
180sec from
the demo starts
360 sec from
the demo starts
540 sec from
the demo starts
660 sec from
the demo starts
[POWER] LED
ON
OFF
[NANOE-G] LED
Follow the remote control settings
OFF
[+8/10°C HEAT] LED
Follow the remote control settings
OFF
[ECONAVI] LED
Follow the remote control settings
OFF
[TIMER] LED
When in Product Demo mode: Always OFF (Timer is cancelled due to H11)
Front panel STM
Vertical louver STM
Open
Ceiling airflow
Stop position
Heating 5
Swing
Stop position
Horizontal louver STM
Area OFF is set: Swing from the front side
Others: Area control under Heating, Range B, Airflow stable
Reset
Fan motor
Fan speed is set to Auto on the remote control: OFF
Fan speed is set to Manual on the remote control: Remote controller
setting tap
Stop position
Human activity sensor
Area ON: Repeat the scan detection and fixed detection.
Area OFF: Standby position (Default position)
Standby position
(Default position)
Sunlight sensor
LED brightness changes (Bright-Dim) when ECONAVI is ON. Confirmed time is for Demo only.
NANOE output
OFF
12.12.2.2
Infrared Sensor Check Mode
1
Conditions to start the mode
The infrared sensor check mode starts when all of the following conditions are met:
o The infrared sensor error is not being detected.
o Not in Demo mode.
o An error of Error Level 20 or higher is not present.
o The signal for infrared sensor check is received. (Long-press the “AUTO COMFORT” button on the
remote control for 10 seconds)
2
Conditions to end the mode
The infrared sensor check mode ends when any of the following conditions is met:
o A signal other than the signal for infrared sensor check is received; or the Auto OFF/ON button is
pressed → The signal received is followed.
o 5 minutes have elapsed since the signal for infrared sensor check was received → The mode is stopped.
o The infrared sensor error is confirmed → The mode is stopped.
o An error of Error Level 20 or higher has occurred → Follow the processing of each error.
49
3
Descriptions of the mode
Every time the signal for infrared sensor check is received, the fixed detection is performed at a different
human activity sensor angle. The result is displayed on LED every 3 seconds.
Operation mode
OFF (Cleaning is also stopped)
Panel
Ordinary operating position (It opens even if the mode signal received is “OFF”)
Human activity sensor
STM
LED
Other parts
Every time the signal for infrared sensor check is received, the position is shifted in the sequence of
“Front  Left  Right  Front …”
It starts operation from the front position when the check mode starts.
Front
Direction towards detection of middle area
Left
Direction towards detection of left area
Right
Direction towards detection of right area
[TIMER] LED
Sensor responded: ON
[ECONAVI] LED
The status in which the detection is not allowed : OFF
The status in which the detection is allowed: ON
Other LEDs
OFF
Sensor not responded: OFF
Follow the case of OFF mode
 Conditions in which detection is not allowed
o For 65 seconds after the infrared sensor is powered ON.
o While the human detection sensor STM is in operation and for 10 seconds after the human activity sensor
STM turns off.
 Operation command by HA and ON timer is not valid during check mode.
(OFF mode continues even after the check mode stops at the expiry time.)
12.12.3 Sunlight Sensor


During ECONAVI operation, the sunlight sensor detects sunlight intensity coming through windows and
differentiates between sunny and cloudy or night to further optimize energy saving by adjusting the temperature.
Sunlight judgment is as following.
12.12.3.1 Sunlight Intensity Reset

The sunlight intensity will to reset to zero (no sunlight condition) when
o Each time ECONAVI is activated.
o Setting temperature is changed.
o Operation mode is changed (exception interchanging COOL ↔ DRY).
o Open the Front Panel (Front Panel switch open).
50
12.12.3.2 Judge Sunlight Intensity



Based on sunlight sensor output voltage, the sunlight intensity value will be computed and logged to sunlight
intensity database.
The sunlight sensor sensitivity could be adjusted:
Function MENU button:
1 Selection of installation location.
2 Selection of indicators’ brightness.
3 ECONAVI indicator OFF.
4 Selection of Contrast of LCD on remote.
12.12.3.3 Judge Ambient Condition

According to sunlight intensity over a period of time, the system will analyze the ambient condition is sunny,
cloudy or night.
12.12.3.4 Temperature Shift
51
12.12.3.5 Sunlight Sensor Check Mode


Operation details (to check, press ECONAVI button for 10 sec).
o The sunlight sensor check mode will be operated for 5 minutes.
o During check mode, the ON and OFF timer will be memorized but it operation be ignored.
o During check mode, if the sunlight sensor check code is retransmitted, the 5 minutes counter will be reset.
o During check mode, if sunlight sensor detected the sunlight intensity value above minimum level, the
ECONAVI indicator turns ON. Else if sunlight sensor detected sunlight intensity value below minimum level,
the ECONAVI indicator is OFF.
To disable sunlight sensor check mode
o After check mode is ended (5 minutes counter elapsed), press AUTO OFF/ON button at indoor unit.
o If the sunlight sensor detected sunlight intensity is at abnormal range, the check mode will be ended.
Please check for error code.
12.12.3.6 Sunlight Sensor Abnormality



Abnormality detection:
o When ECONAVI is ON, if the sunlight intensity value below minimum level continuously for 24 hours, the
sunlight sensor disconnection error counter will increase by 1 time. If the ECONAVI is OFF, the 24 hours
timer will be reset, but the sunlight sensor disconnection error counter will not be reset.
Error Code judgment
o When sunlight sensor disconnection error counter reached 15 times. H70 occurred.
o No TIMER indicator or ECONAVI indicator blink.
When error code happened, the unit is able to operate without sunlight sensor.
52
13. Protection Control
13.1 Protection Control for All Operations
13.1.1



Restart Control (Time Delay Safety Control)
The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on
again by pressing OFF/ON button at remote control within this period.
This control is not applicable if the power supply is cut off and on again.
This phenomenon is to balance the pressure inside the refrigerant cycle.
13.1.2
1
2
3
Total Running Current
When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor
operation will be decreased.
If the running current does not exceed X value for 10 seconds, the frequency instructed will be increased.
However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for
3 minutes.
Model
Hz
Operation Mode
Cooling / Dry (A)
Cooling / Dry (B)
Cooling / Dry (C)
Heating
4
VE9NKE
50
X (A)
3.91
3.91
3.91
11.05
VE12NKE
50
Y (A)
16.76
16.76
16.76
16.76
The first 30 minutes of cooling operation, (A) will be applied.
Cooling
Maximum Current Limit
Heating
53
X (A)
7.41
6.44
5.14
13.02
Y (A)
16.76
16.76
16.76
16.76
13.1.3
IPM (Power Transistor) Prevention Control

Overheating Prevention Control
1 When the IPM temperature rises to 120°C, compressor operation will stop immediately.
2 Compressor operation restarts after 3 minutes the temperature decreases to 110°C.
3 If this condition repeats continuously 4 times within 30 minutes, timer LED will be blinking (“F96” is indicated).

DC Peak Current Control
1 When electric current to IPM exceeds set value of 20 A, the compressor will stop operate. Then, operation
will restart after 3 minutes.
2 If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will
restart after 1 minute.
3 If the set value exceeded again within 30 seconds after the compressor starts, the operation will restart after
1 minute. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off, timer
LED will be blinking (“F99” is indicated).
13.1.4


Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The
changes of frequency are as below.
If compressor discharge temperature exceeds 107°C, compressor will be stopped, occurs 4 times per 20 minutes,
timer LED will be blinking. (“F97” is indicated.)
13.1.5


Low Frequency Protection Control 1
When the compressor operate at frequency lower than 24 Hz continued for 240 minutes, the operation frequency
will be changed to 23 Hz for 2 minutes.
13.1.7

Low Pressure Prevention Control (Gas Leakage Detection)
Control start conditions
o For 5 minutes, the compressor continuously operates and outdoor total current is between 0.75A and 0.95A.
o During Cooling and Dry operations:
Indoor suction temperature - indoor piping temperature is below 4°C.
o During Heating operations :
Indoor piping temperature - indoor suction is under 5°C.
Control contents
o Compressor stops (and restart after 3 minutes).
o If the conditions above happen 2 times within 20 minutes, the unit will:
 Stop operation
 Timer LED blinks and “F91” indicated.
13.1.6

Compressor Overheating Prevention Control
Low Frequency Protection Control 2
When all the below conditions comply, the compressor frequency will change to lower frequency.
Temperature, T, for:
Indoor intake air (°C)
Outdoor air (°C)
Indoor heat exchanger (°C)
Cooling/Dry
T < 14 or T ≥ 30
T < 13 or T ≥ 38
T < 30
54
Heating
T < 14 or T ≥ 28
T < 4 or T ≥ 24
T≥0
13.1.8


4-Way Valve Operation Detection Control (Switching Abnormality between
Cooling and Heating)
When indoor heat exchanger exceeds 45°C (Cooling operation) or 0°C (Heating and Deice operation) in
4 minutes or 3 minutes (Deice operation) after compressor start, compressor will stopped.
If above condition occurs 4 times per 40 minutes (non-stop heating deice operation), timer LED blinks "F11"
indicated.
13.2
Protection Control for Cooling and Dry Operation
13.2.1
Outdoor Air Temperature Control



The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the
diagram below.
This control will begin 1 minute after the compressor starts.
Compressor frequency will adjust base on outdoor air temperature.
13.2.2



Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation
frequency).
The compressor stop if outdoor pipe temperature exceeds 61°C.
If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95 indicated: outdoor high pressure rise
protection).
13.2.3





Freeze Prevention Control 1
When indoor heat exchanger temperature is lower than 0°C continuously for 6 minutes, compressor will stop
operating.
Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 5°C.
At the same time, indoor fan speed will be higher than during its normal operation.
If indoor heat exchanger temperature is higher than 5°C for 5 minutes, the fan speed will return to its normal
operation.
13.2.4

Cooling Overload Control
Freeze Prevention Control 2
Control start conditions
o During Cooling operation and dry operation
 During thermo OFF condition, indoor intake temperature is less than 10°C or
 Compressor stops for freeze prevention control
o Either one of the conditions above occurs 5 times in 60 minutes.
Control contents
o Operation stops.
o Timer LED blinks and “H99” indicated.
55
13.2.5




To prevent dew formation at indoor unit discharge area.
This control will be activated if:
o Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled.
o When Cooling or Dry mode is operated more than 20 minutes or more.
This control stopped if:
o Compressor stopped.
o Remote control setting changed (fan speed / temperature).
o Outdoor air temperature and indoor intake temperature changed.
Fan speed will be adjusted accordingly in this control.
13.2.6

Dew Prevention Control 1
Odor Cut Control
To reduce the odor released from the unit.
o Start Condition
 AUTO FAN Speed is selected during COOL or DRY operation.
 During freeze prevention control and timer preliminary operation, this control is not applicable.
o Control content
 Depends on compressor conditions:
1. Compressor OFF → Compressor ON.
The indoor unit fan stops temporarily and then starts to blow at minimum airflow for 40 seconds.
2. Compressor ON → Compressor OFF.
The indoor unit fan stops for 90 seconds and then blows at minimum airflow for 20 seconds.
13.3 Protection Control for Heating Operation
13.3.1
Overheating Protection by Intake Air Temperature Detection
Compressor will operate at limited freq., if indoor intake air temperature is 30°C or above.
13.3.2

The Max current value is regulated when the outdoor air temperature rise above 16°C in order to avoid
compressor overloading.
13.3.3


Overheating Protection by Outdoor Air Temperature Detection
Overload Protection Control
The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown
below.
If the heat exchanger temperature exceeds 60°C, compressor will stop.
56
13.3.4

When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced.
13.3.5


Cold Draught Prevention Control
Deice Operation
When outdoor pipe temperature and outdoor air temperature is low, deice operation starts.
Deice Start condition
o Outdoor air temperature sensor 1 detected below 9°C continuously for 40 minutes, outdoor pipe temperature
sensor 1 detected below line A for 3 minutes within the next 20 minutes.
o Outdoor air temperature sensor1 detects temperature below 9°C continuously for 40 minutes, if the
temperature is below line A and line B for 3 minutes.
o Heating operation operates without deicing operation continuously for 24 hour, outdoor temperature is below
3°C.
Non-stop Heating Deice Operation
Without Heating Deice Operation
o 4-way valve is switched and deicing is performed by cooling cycle.
o Unit stop heating operation for maximum 12 minutes.
o During this operation the power indicator blinks and the vertical airflow direction louver is left open.
57


Non-stop heating deice operation is prohibited when any of the following condition is met
o Protection control that limit capacity.
o Heat charge temperature sensor abnormal.
o Heat charge cycle abnormal.
o Outdoor pipe temperature sensor 2 abnormal.
o The outdoor temperature range falls under -30°C.
Deice stop condition
o Outdoor air temperature is more than 9°C
13.3.6



Heat Charger 2-Way Valve Control
Quick Heating
o Heat charger 2-way valve will open for 30 seconds to speed up heating during Powerful heating start time.
Thermo OFF comfortable control
o Heat charger 2-way valve will open before thermo OFF to change the room temperature during thermo OFF
and to reduce loss during thermo ON.
Start condition
 Control content
Heat charger 2-way valve ON and OFF maximum 3 times consecutively.
58
14. Servicing Mode
14.1 Auto OFF/ON Button (Indoor Unit)
1
AUTO OPERATION MODE
The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation
can be used to operate air conditioner with limited function if remote control is misplaced or malfunction.
2
TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)
The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than
5 seconds. A “beep” sound will heard at the fifth seconds, in order to identify the starting of Test Run
operation (Forced cooling operation). Within 5 minutes after Forced cooling operation start, the Auto OFF/ON
button is pressed for more than 5 seconds. A 2 “beep” sounds will heard at the fifth seconds, in order to
identify the starting of Forced heating operation.
The Auto OFF/ON button may be used together with remote control to set / change the advance setting of air
conditioner operation.
3
Remote Control Operation Function (Setting)
Remote Control Code Change (Change of Remote Control Code)
To prevent malfunction by cross-interference of multiple remote control, code change function is set. By
default transmission code “A” is set.
o Setting the air-con and remote control at “B”.
1. Opening the battery lid of the remote control, and cut the jumper line (J-A). Then, the remote control is
set “B”.
2. Open the front lid of the remote control and press the menu button for ten seconds.
 The “Remote Control Code B” sign will be shown on the screen, after “Setting request received”
sign is shown on the screen.
3. Press the “Reserve button” when the sign is flashing.
(The request is sent to the unit and the setting will be completed. “Beep” sound will be heard.)
4. The remote control screen will be back to the original.
 The remote control screen will be back to the original after 30 seconds.
59
o
4
Setting memory
 The change of remote control setting will be memorized after cutting the jumper line.
 When 3 ~ 4 units are installed in one room. Short the terminal (J-B) of the PCB, and set at “C” and
“D”.
PREFERENCE SETTING MODE
o Individual Mode
 Each mode is cancelled if no operation is performed for 5 minutes or any code other than the diagnosis code is
received from the remote control.
14.2 Remote Control Button
14.2.1

RESET
To restore the indoor unit setting.
o To reset the remote control, remove the batteries.
60
15. Troubleshooting Guide
15.1 Refrigeration Cycle System
In order to diagnose malfunctions, make sure that there are no
electrical problems before inspecting the refrigeration cycle.
Such problems include insufficient insulation, problem with the
power source, malfunction of a compressor and a fan.
The normal outlet air temperature and pressure of the refrigeration
cycle depends on various conditions, the standard values for them
are shown in the table on the right.
Normal Pressure and Outlet Air Temperature (Standard)
Outlet air
Gas Pressure
Temperature
Mpa
2
(°C)
(kg/cm G)
Cooling Mode
0.9 ~ 1.2 (9 ~ 12)
12 ~ 16
Heating Mode 2.3 ~ 2.9 (23 ~ 29)
36 ~ 45
*Condition: • Indoor fan speed = High
• Outdoor temperature 35°C at the cooling
mode and 7°C at the heating mode
• Compressor operates at rated frequency
61
15.1.1
Relationship between the Condition of the Air Conditioner and Pressure and
Electric Current
Condition of the
air conditioner
Cooling Mode
Heating Mode
Low Pressure
High Pressure
Electric current
during operation
Low Pressure
High Pressure
Electric current
during operation
Insufficient refrigerant
(gas leakage)






Clogged capillary tube or
Strainer






Short circuit in the indoor unit






Heat radiation deficiency
of the outdoor unit






Inefficient compression






• Carry out the measurement of pressure, electric current, and temperature fifteen minutes after an operation is started.
62
15.2 Breakdown Self Diagnosis Function
15.2.1



Once abnormality has occurred during operation, the unit will stop its operation and Timer LED blinks. In case of
abnormality which does not affect the refrigeration cycle, the operation will not stop but the Timer LED will blinks.
Although Timer LED goes off when power supply is turned off, if the unit is operated under breakdown condition,
the LED will light up again.
In operation after breakdown repair, the Timer LED will no more blink. The last error code (abnormality will be
stored in IC memory).
15.2.2






To Clear Memorized Error Code after Repair (Protective Operation)
Turn power on (in standby condition).
Press the Auto button for 5 seconds (A beep receiving sound) on the main unit to operate the unit at Forced
Cooling Operation modes.
Short CHECK terminal to transmit signal to main unit. A beep sound is heard from main unit and the data is
cleared.
15.2.5

To Display Memorized Error Code (Protective Operation)
Turn power on (in standby condition).
Short the CHECK terminal, the latest error code is displayed on the remote control display.
15.2.4


To Make a Diagnosis
Timer LED start to blink and the unit automatically stops the operation.
Press the INFO button on the remote controller.
Error code will be displayed on the remote controller display for 4 seconds then it will return to the original display.
If no information can be received from indoor unit, "RETRY" will be display for 4 seconds on the remote controller
display.
15.2.3


Self Diagnosis Function (Three Digits Alphanumeric Code)
Temporary Operation (Depending on Breakdown Status)
Press the AUTO button (A beep receiving sound) on the main unit to operate the unit. (Remote control will
become possible.)
The unit can temporarily be used until repair.
63
15.3 Self Diagnosis Functions and Points of Diagnosis
[List of Diagnosis Method]
Code
—
H00
H11
Name of Diagnosis
Codes for the
commencement of
self diagnosis
No memory of error
code
Indoor/outdoor
communication error
H14
Indoor unit intake air
temperature sensor
error
H15
Compressor
temperature sensor
error
H16
Outdoor unit CT
disconnection error
H19
Indoor unit fan motor
lock error
H23
Indoor unit heat
exchanger
temperature sensor
error
H25
NANOE-G system
abnormality
H27
Outdoor temperature
sensor error
Descriptions on Diagnosis
Main Areas to be
Diagnosed
—
—
—
—
When the indoor/outdoor communication failed for 15 seconds or more, the power relay
is OFF for 2 minutes. Then, determine the presence of the error again. The error code is
displayed when the error is detected two times. (No communication error is determined
for 1 minute after the operation is started or the power relay is ON.)
<Points of diagnosis>
1. The model and supply voltage of the indoor and outdoor unit are checked.
2. Ensure that the control board of the outdoor unit is working.
3. The voltage of indoor/outdoor communication line, the supply voltage of the outdoor
unit and the return voltage from outdoor to indoor unit are checked.
 Check of the model
of indoor & outdoor
units
 Indoor/outdoor unit
connection wire
 Indoor & outdoor
unit control boards
 Outdoor unit AC
circuit components
This error code is displayed when the detected temperature of the intake air
temperature sensor is below -50°C for 5 consecutive seconds, or 149°C or higher for 2
consecutive minutes after 20 minutes have elapsed since the air conditioner is turned
on.
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected.
If the sensor is not open (≥ 500kΩ) or short-circuited (≤6.5kΩ), poor contact of the
connector has occurred.
This error code is displayed when the detected temperature of the compressor
temperature sensor is 330°C or higher for 5 consecutive seconds, or below -16°C for 5
consecutive seconds after 5 minutes have elapsed since the compressor is started.
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected.
If the sensor is not open (≥ 500kΩ) or short-circuited (≤0.5kΩ), poor contact of the
connector or a failure of control board has occurred.
If the detected total current is below 0.7A for 20 consecutive seconds when the air
conditioner operates beyond its rated capacity, the air conditioner stops and this error
code is displayed. (This function does not work for 3 minutes after the outdoor unit starts
operating.)
<Points of diagnosis>
1. Check of refrigerating cycle: Gas leak (Refrigerant level is very low.)
2. Check of control board; Check for disconnection of CT (open) only. (The control
board is to be replaced in case of CT open.)
 For scroll compressor (DC motor): H16 is usually detected only when the
compressor is in operation.
If a rotation error (too high/low speed) is detected for 10 consecutive seconds, only the
fan motor is stopped and then restarted. If the rotation error is detected seven
consecutive times within 25 seconds, the fan motor lock is determined and this error
code is displayed.
<Points of diagnosis>
1. Check for indoor unit fan motor lock.
2. Poor contact and detached fan motor connector, fan motor failure and indoor unit
control board.
This error code is displayed when the detected temperature of the indoor unit heat
exchanger temperature sensor is below -50°C or 149°C or higher for 5 consecutive
seconds. (The temperature is not detected during De-Icing.)
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected.
If the sensor is not open (≥ 500kΩ) or short-circuited (≤2.5kΩ), poor contact of the
connector or a failure of control board has occurred.
This error code is displayed when input power signal abnormal :
When OFF, signal is low.
When ON, signal is high.
Nanoe-G LED blinking.
 Intake air
temperature sensor
(Bad connection/
detached
connector)
This error code is displayed when the detected temperature of the outdoor temperature
sensor is below -40°C or 150°C or higher for 5 consecutive seconds.
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected. If the
sensor is not open (≥ 500kΩ) or short-circuited (≤0.5kΩ), poor contact of the
connector or a failure of control board has occurred.
64
 Compressor
temperature sensor
(Bad connection /
detached
connector)
 Low refrigerant
level (almost
empty)
 Outdoor unit control
board
 Indoor unit control
board
 Indoor unit fan
motor
(Bad connection /
detached
connector)
 Indoor unit heat
exchanger
temperature sensor
(Bad connection /
detached
connector)
 Indoor unit PCB.
 Hi-Voltage Power
supply unit.
 CN-NANO loosen.
 Outdoor
temperature sensor
(Bad connection /
detached
connector)
H28
Outdoor unit heat
exchanger
temperature sensor 1
error
This error code is displayed when the outdoor unit heat exchanger temperature sensor
1 is below -58°C or 107°C or higher for 5 consecutive seconds.
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected.
If the sensor is not open (≥ 500kΩ) or short-circuited (≤0.5kΩ), poor contact of the
connector has occurred.
 Outdoor unit heat
exchanger
temperature
sensor 1
(Bad connection /
detached
connector)
H29
Outdoor unit heat
exchanger
temperature sensor 2
error
This error code is displayed when the detected temperature of the outdoor temperature
sensor 2 is below -58°C or 107°C or higher for 5 consecutive seconds.
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected.
If the sensor is not open (≥ 500kΩ) or short-circuited (≤0.5kΩ), poor contact of the
connector or a failure of control board has occurred.
 Outdoor unit heat
exchanger
temperature
sensor 2
(Bad connection /
detached
connector)
H33
Connection error of
the models with
different voltage
power supply
 Model difference
between indoor &
outdoor units
 Check of supply
voltage
H38
Brand not
corresponding
H53
Heat charger tank
temperature sensor
error
H59
Infrared sensor error
H70
Sunlight sensor error
H96
2- and 3-way valve
opening failure check
H97
Outdoor unit fan
motor lock error
This error code is displayed when the models of indoor and outdoor units are different or
connected to 100V and 200V models, respectively.
 This function does not apply to the case where the supply voltage of the indoor unit is
doubled.
<Points of diagnosis>
1. Check for the model compatibility between indoor & outdoor units; Check of supply
voltage.
1 200V indoor unit: When 100V or 200V is supplied and the outdoor unit is a 100V
model:
The indoor unit immediately turns off the power relay and H33 is displayed. After the
reset is cancelled, the power relay does not turn on if the indoor unit is a 200V
model.
2 Both indoor and outdoor units are 200V models and 100V power is supplied:
If the DC voltage of the outdoor unit is 180V or below after 20 seconds from power
relay ON, the signal is transmitted to the indoor unit. If the error occurs one more
time, H33 is displayed.
3 100V indoor unit: When 100V is supplied and the outdoor unit is a 200V model:
The indoor unit immediately turns off the power relay and H33 is displayed.
This error code is displayed when the connection is different between the indoor and
outdoor units.
<Points of diagnosis>
1. Check of models and capabilities of indoor and outdoor units.
2. Short-circuit of CN-S on outdoor unit control board.
The TIMER indicator flashes when the disconnection or short-circuit of heat charger
tank sensor is detected for 5 consecutive seconds. (The air conditioner continues the
operation.)
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected.
If the sensor is not open or short.-circuited, poor contact of the connector or a failure
of control board has occurred.
This error code is displayed when the infrared sensor shows no response within 30
seconds after it is ON or continuously responds between 80 and 250 seconds after it is
ON.
<Points of diagnosis>
1. Check of the detection and location of the infrared sensor.
2. Check for disconnection and detached infrared sensor.
When 24-hour disconnection is detected for 15 consecutive days, the diagnosis code
“H70” is displayed on the indoor unit and ECONAVI LED is OFF. (The air conditioner
continues the operation.)
<Points of diagnosis>
1. Failure of the sunlight sensor.
2. Detached sunlight sensor connector.
Failure to open the 2- and 3-way valve is detected based on the changes in indoor unit
intake air temperature and indoor unit pipe temperature. The time required for this
detection is approximately 10 minutes when in COOL mode and approximately 25
minutes when in HEAT mode.
<Points of diagnosis>
1. Check if the 2-way and 3-way valves are closed.
If a rotation error (too high/low speed) is detected for 10 consecutive seconds, only the
fan motor is stopped and then restarted. If the rotation error is detected 2 consecutive
times or if an overcurrent (fan motor current 3A and above) is detected, the compressor
is stopped, and then restarted after 180 seconds. If the error or overcurrent is detected
two times within 20 minutes, this error code is displayed.
<Points of diagnosis>
1. Check for outdoor unit fan motor lock.
2. Poor contact and detached fan motor connector, fan motor failure and outdoor unit
control board.
65
 Models of indoor
and outdoor units
 Heat charger tank
temperature sensor
(Bad connection /
detached
connector)
 Infrared sensor
(Bad connection /
disconnection /
detached
connector)
 Sunlight sensor
(Bad connection of
connector)
 2- and 3-way valve
opening failure
 Outdoor unit control
board
 Outdoor unit fan
motor
(Bad connection /
detached
connector)
H98
Indoor unit
overpressure
protection
H99
Indoor unit heat
exchanger freezing
protection
F11
Cooling-Heating
switching error
F19
Heat charger cycle
error
F90
PFC protection
F91
Refrigeration cycle
error
When the temperature of the indoor unit heat exchanger temperature sensor exceeds
60°C during the heating operation, this diagnosis code is stored in the memory and the
compressor stops operation. It resumes operation after 180 seconds if the temperature
is below 60°C. No error code is displayed.
<Points of diagnosis>
1. Check of the indoor unit heat exchanger temperature sensor (Check for change in
characteristic and resistance value): Symptom – No hot start, no thermo ON and
repeating stop and start during the start of the operation.
2. Additional check for short-circuit of the indoor unit and clogging of air filter.
When the temperature of the indoor unit heat exchanger temperature sensor is 0°C for 6
consecutive minutes during the cooling or dry operation, this diagnosis code is stored in
the memory and the compressor stops. It resumes operation after 180 seconds if the
temperature is 10°C and above. No error code is displayed.
<Points of diagnosis>
1. The primary cause is cooling or dry operation at low outside temperature. This is not
a failure. H99 is also displayed if dry operation is performed under AUTO mode in
winter while the outside temperature goes up.
2. Check of refrigerant cycle: Gas leak (refrigerant level is low) and pipe breakage.
3. Additional check for short-circuit of the indoor unit and clogging of air filter.
When the temperature of the indoor unit heat exchanger temperature sensor after 4
minutes from the start of compressor is 45°C and above during cooling or dry cool
operation or below 0°C during heating operation, this diagnosis code is stored in the
memory and the compressor stops. It resumes operation after 180 seconds. The error
code is displayed if this error is detected four times within 40 minutes.
<Points of diagnosis>
1. Check of the 4-way valve: Check for disconnection or short-circuit of the 4-way valve
coil.
2. If the 4-way valve is normal, then switching error of the 4-way valve has occurred.
If all of the following conditions are met three consecutive times, the power relay is OFF
for 2 minutes. Subsequently, if all of the following conditions are once again met three
consecutive times after the power relay is ON again, the TIMER indicator flashes. (The
air conditioner continues the operation.)
 The temperature of the heat charger tank is 45°C and above at the start of Non-Stop
De-Icing.
 The temperature of the heat charger tank drops by not more than 2°C after 4 minutes
from the start of Non-Stop De-Icing.
 The temperature of the outdoor unit pipe does not reach 6°C at the end of Non-Stop
De-Icing.
<Points of diagnosis>
1. Liquid leak from the heat charger tank.
2. Check if the 2-way valve of the heat charger tank is working.
The compressor stops if the DC voltage of the outdoor unit control board (PFC output)
exceeds the preset value for protection against over-voltage. The error code is
displayed if the protection is activated four times within 20 minutes.
<Points of diagnosis>
1. Check of the inverter circuit on the control board:
The voltage of IPM is checked within 3 minutes after the power is OFF and then ON.
Symptom: The compressor stops after 30 seconds from its start and F90 is stored in
the memory. The error code is displayed once the compressor is restarted four
times.
While the air conditioner is in operation beyond the ratings, this diagnosis code is stored
in the memory and the compressor stops if:
 During cooling or dry cool operation:
Indoor unit intake air temperature - Indoor unit pipe temperature < 4°C
 During heating operation:
Indoor unit pipe temperature - Indoor unit intake air temperature < 5°C
In the case where the air conditioner operates within the total current range of 0.7 –
1.4A for 5 minutes.
The compressor resumes operation after 180 seconds. The error code is displayed if
this error is detected two times within 20 minutes.
<Points of diagnosis>
1. Check of refrigerating cycle: Gas leak. (Gas level is less than a half.) The diagnosis
code to be displayed due to gas leak changes in the order of H99 → F97 → F91 →
H16 depending on the amount of gas leaked. The range of this error (F91) is
extremely small. (Protection of the compressor at the beginning of a season)
66
 Dirt on air filter
 Short-circuit of
indoor unit
 Low refrigerant
level (relatively
low)
 Dirt on air filter
 Short-circuit of
indoor unit
 4-way valve
 4-way valve coil
 Draining of the
antifreeze liquid
within the heat
charger tank
 Error of heat
charger tank 2-way
valve
 Outdoor unit control
board
 Draining of
refrigerant
(3-way valve
opening failure,
gas leak, etc.)
F93
Compressor rotation
error
F95
Overpressure
protection in case of
cooling error
F96
Transistor module
over-temperature
protection
F97
Compressor overtemperature
protection
F98
Total current
protection
F99
DC peak operation
error
If the rotation of the compressor does not synchronize with the control signal, this
diagnosis code is stored in the memory and the compressor stops. It resumes operation
after 180 seconds. The error code is displayed if this error is detected four times within
20 minutes.
<Points of diagnosis>
1. Symptom caused by the failure to open the 2-way and 3-way valves: The
compressor stops after it operates for 1 to 3 minutes from its start and F93 is stored
in the memory.
2. Check of the inverter circuit of the control circuit: The IPM base current is checked (6
locations) within 3 minutes after the power is turned off and on. Symptom: The
compressor stops after 30 seconds from its start and F93 is stored in the memory.
The error code is displayed once the compressor is restarted four times.
3. Check of the disconnection of the compressor coil (open): Approximately 1Ω when
each phase is in normal state (The symptom is the same as the above 2.).
When the temperature of the outdoor unit heat exchanger temperature sensor 1
exceeds 61°C during the cooling or dry cool operation, this diagnosis code is stored in
the memory and the compressor stops operation. No error code is displayed.
<Points of diagnosis>
1. Check of the outdoor unit heat exchanger temperature sensor 1. (Check for change
in characteristic and resistance value.)
2. Check for interrupted heat radiation on the outdoor unit.
Overheat is detected in the IPM to block the heat. The diagnosis code is stored in the
memory and the compressor stops. The error code is displayed if this error is detected
four times within 30 minutes.
<Points of diagnosis>
1. Interrupted heat radiation on the outdoor unit and the failure of outdoor unit fan. (The
outdoor unit fan does not rotate.)
2. Failure of IPM (outdoor unit control board).
3. Check for short-circuit and continuity of IPM sensor.
When the temperature of the compressor exceeds 103°C, the diagnosis code is stored
in the memory and the compressor stops. It resumes operation after 180 seconds when
the temperature is 92°C or below. The error code is displayed if this error is detected
four times within 20 minutes.
<Points of diagnosis>
1. Check of refrigerating cycle: Gas leak (Low refrigerant level).
Symptom: The outdoor unit sometimes stops.
2. The compressor temperature sensor is checked when the error code is displayed
and the compressor stops. (Check for change in characteristic and resistance value.)
3. Interrupted heat radiation on the outdoor unit and the failure of outdoor unit fan. (The
unit fan does not rotate due to open state.) (The error is sometimes detected in case
of overload. In this case, F97 remains in the memory.)
If the total current exceeds the preset value, this diagnosis code is stored in the memory
and the compressor stops. It resumes operation after 180 seconds. The error code is
displayed if this error is detected three times within 20 minutes. [Refer to “Total Current
Protection Control” for the preset value]
<Points of diagnosis>
1. AC voltage of the outdoor unit terminal board during operation: The voltage should
drop by less than 5% from the voltage at the STOP state. (The rated voltage is to be
±110% even during the operation.) If the voltage drops by not less than 5%, or in
case of sudden change in voltage, check for the length/thinness of the indoor wiring
and indoor/outdoor connection wire.
2. Check for the interrupted heat radiation on the outdoor unit (during cooling
operation): The outdoor unit is usually not stopped and only subjected to the
capacity restriction by way of current control. No diagnosis code is displayed.
When overcurrent, overheat or drop in supply voltage is detected in the IPM within 30
seconds from the start of the compressor, the compressor stops and then resume
operation in 60 seconds. When the error is detected seven consecutive times, the
compressor stops operation and the error code is displayed.
<Points of diagnosis>
1. The compressor stops under F99 within 30 seconds from its start:
When the lead wires are disconnected from U, V and W on the IPM then operate:
 If F93 is displayed and the compressor stops: Check of refrigerating cycle, 3way valve opening failure, clogged pipe, failure of compressor (disconnection of
coil).
 If F99 is displayed and the compressor stops: Check for IPM power supply of
DC15V (4 locations) and voltage of DC280V. Failure of outdoor unit control
board.
2. If the compressor stops after it operates for more than 5 minutes, a failure of the
power circuit and refrigerant cycle is also checked.
 Outdoor unit control
board
 3-way valve
opening failure
 Detached
compressor
connector
 Compressor phase
interruption
 Outdoor unit heat
exchanger
temperature
sensor 1
 Interrupted heat
radiation
 Interrupted heat
radiation
 Outdoor unit fan
motor failure
 Overload
conditions
 Low refrigerant
level (relatively
low)
 Interrupted heat
radiation
 Overload
conditions
 High refrigerant
level
 Interrupted heat
radiation
 Compressor
 Outdoor unit control
board
[Examples of the How to Identify the Faulty Point]
The following is some flow charts which illustrate on how to identify the faulty point for each code (examples).
67
15.4 Self-diagnosis Method
15.4.1
H11 (Indoor/Outdoor Communication Error)
Troubleshooting
68
15.4.2
H14 (Indoor Unit Intake Air Temperature Sensor Error)
Troubleshooting
69
15.4.3
H15 (Compressor Temperature Sensor Error)
15.4.4
H16 (Outdoor Unit CT Disconnection Error)
Troubleshooting
70
15.4.5
H19 (Indoor Unit Fan Motor Lock Error)
Troubleshooting
15.4.6
H23 (Indoor Unit Heat Exchanger Temperature Sensor Error)
Check the Resistance of Thermistor.
71
15.4.7
H25 (NANOE-G system abnormality)
Troubleshooting
15.4.8
H27 (Outdoor Temperature Sensor)
15.4.9
H28 (Outdoor Heat Exchanger Temperature Sensor 1 Error)
15.4.10 H29 (Outdoor Heat Exchanger Temperature Sensor 2 Error)
72
15.4.11 H33 (Connection Error of the Models with Different Voltage Power Supply)
Troubleshooting
73
15.4.12 H38 (Brand not Corresponding)
Troubleshooting
74
15.4.13 H53 (Heat Charger Tank Temperature Sensor Error)
Troubleshooting
75
15.4.14 H59 (Infrared Sensor Error)
Troubleshooting
76
15.4.15 H70 (Sunlight Sensor Error)
Troubleshooting
77
15.4.16 H96 (2- and 3-Way Valve Opening Failure Check)
Troubleshooting
78
15.4.17 H97 (Outdoor Unit Fan Motor Lock Error)
Troubleshooting
79
15.4.18
H98 (Indoor Unit Overpressure Protection)
Troubleshooting
80
15.4.19 H99 (Indoor Unit Heat Exchanger Freezing Protection (Error Code is to be Stored
in the Memory only))
Troubleshooting
81
15.4.20
F11 (Cooling-Heating Switching Error)
Troubleshooting
82
15.4.21 F19 (Heat Charger Cycle Error)
Troubleshooting
83
15.4.22
F90 (PFC Protection)
Troubleshooting
84
15.4.23
F91 (Refrigeration Cycle Error)
Troubleshooting
85
15.4.24
F93 (Compressor Rotation Error)
Troubleshooting
86
15.4.25
F95 (Overpressure Protection in Case of Cooling Error)
Troubleshooting
87
15.4.26
F96 (Transistor Module Over-temperature Protection)
Troubleshooting
88
15.4.27
F97 (Compressor Over-temperature Protection)
Troubleshooting
89
15.4.28
F98 (Total Current Protection Control)
Troubleshooting
90
15.4.29
F99 (DC Peak Operation Error)
Troubleshooting
91
16. Disassembly and Assembly Instructions
16.1 Points of Disassembly (Indoor Unit)
Disconnect the power plug
Be sure to disconnect the power plug from the outlet before
disassembly or repair of the unit. Failure to observe this warning
could result in electric shock. Be very careful not to touch the live
parts when performing a repair work which requires power supply or
inspecting the circuit. Also, be very careful of the fan as it can start
rotating anytime.
Read this manual carefully when replacing the air filter frame (auto cleaner) block or other parts.
16.1.1 Removing the Front Panel
1
Push the panel up with both hands until it stops. Push the panel further up and then pull it towards you to
remove it.
 Note on disassembly: Hold the grooves on the front panel to open it. (The panel moves if you hold the
movable part.)
16.1.2 Removing the Air Filters
1
2
Raise the front panel up with both hands until it stops.
 Note on disassembly: Hold the grooves on the front panel to open it. (The panel moves if you hold the
movable part.)
Put your fingers at the slits on both sides of the air filter and pull the filter towards you to remove it. (Left and
right filters are common.)
 Note on disassembly: The air filters are in L shape which cover up to the inner end of the top side. Pull the
filters slowly towards you to avoid them from getting stuck.
 Note on assembly: When attaching the air filters, push the push point on the air filters securely and make
sure that there is no misalignment of the filters such as lifted filter.
92
16.1.3 Removing the Front Grille (Right) and Front Grille (Left)
1
Perform “16.1.1 Removing the Front Panel”.
2
3
Open the vertical airflow direction louver slowly.
Remove the fixing screw (1 piece) of the indoor/outdoor unit transmission wire cover and leave the cover
open.
 Note on disassembly: Note that the front grille cannot be removed if the cover is closed because of the
reinforced safety structure of electric wiring.
4
5
Remove the screws of the front grille (right) and (left) (2 screws each).
Disengage the tab on the bottom part of the front grille (right) and (left) (one tab each). Slightly lift the bottom
part and then raise the front grilles to remove them.
93
16.1.4 Removing the Control Board Box
1
2
3
Perform “16.1.1 Removing the Front Panel”.
Perform “16.1.3 Removing the Front Grille (Right) and Front Grille (Left)”.
 Note on disassembly: When removing only the control board box, remove the front grille (right) only.
Remove the electrical component cover (front) on the right side of the control board box. (There are 2 tabs on
top and 1 tab at the bottom.)
4
Remove the screw (1 piece) at the bottom of the control board and then pull the power-supply box towards
you.
5
Disengage the tabs (3 locations) which fix the electrical component cover (rear) to the power-supply box.
Then, remove the electrical component cover (rear) on the right side of the power-supply box.
94
6
Disconnect the connectors and terminals.
 Connectors
o CN-TH2 (green) ・・・・・ Indoor intake air temperature sensor
o CN-DISP (white) ・・・・・ Control board (human sensor unit, signal receptor and indicator)
o CN-FM (white) ・・・・・ Fan motor
o CN-TH1 (yellow) ・・・・・ Indoor heat exchanger temperature sensor
o CN-STM1 (green) ・・・・・ Vertical louver motor (lower)
o CN-STM2 (white) ・・・・・ Vertical louver motor (upper)
o CN-STM3 (blue) ・・・・・ Horizontal louver motor (right)
o CN-STM4 (blue) ・・・・・ Human sensor drive motor
o CN-CNT (white)
o CN-STM6 (gray) ・・・・・ Front panel motor
o CN-STM7 (red) ・・・・・ Horizontal louver motor (left)
o CN-SWSEN (white) ・・・・・ Control board (emergency operation button, front panel switch) ※
o CN-NANO (white) ・・・・・ Highvoltage power supply (nanoe)
 Note on disassembly: There is no need to disconnect the connector marked with ※ to remove the
control board box. (However, when removing the control board, the connector marked with ※ should
be disconnected.)
 Tab terminals
o TAB1 (white) ・・・・・ Power supply
o TAB2 (white) ・・・・・ Power supply
7
Remove the screw (1 piece) of the clamp for the power cord and then remove the clamp.
95
8
Remove the earth wire screw (1 piece) and disconnect the indoor/outdoor connection wires as well as the
connector for the white wire connected to the terminal block. Then, remove the control board box.
 Note on assembly: About lead wire arrangement during assembly
 The lead wire of the indoor motor should be hung on the hook on the motor cover and then brought
to the left. Connect the connector to the control board.
16.1.5 Removing the Control Board
1
2
3
4
Perform “16.1.1 Removing the Front Panel”.
Perform “16.1.3 Removing the Front Grille (Right) and Front Grille (Left)”.
 Note on disassembly: When removing only the control board, remove the front grille (right) only.
Perform “16.1.4 Removing the Control Board Box”.
Disconnect the connectors for the black and red wires connected to the terminal block.
5
Remove the screw (1 piece) which fixes the control board.
96
6
Disengage the tabs (5 locations) which fix the control board and then remove the control board.
16.1.6 Removing the Control Board (Auto OFF/ON Button and Buzzer)
1
2
3
4
5
Perform “16.1.1 Removing the Front Panel”.
Perform “16.1.3 Removing the Front Grille (Right) and Front Grille (Left)”.
 Note on disassembly: When removing only the control board (emergency operation switch and buzzer),
remove the front grille (right) only.
Remove the electrical component cover (front) on the right side of the control board box. (There are two tabs
on top and one tab at the bottom.)
Disconnect the connector CN-SWSEN (white) connected to the control board.
Press the tab (1 location) on top of the control board (emergency operation switch & buzzer) and remove the
control board (emergency operation switch and buzzer).
97
16.1.7 Removing the Human and Object Sensor of the Control Board (Indicator and
Signal Receptor)
1
2
3
Perform “16.1.1 Removing the Front Panel”.
Perform “16.1.3 Removing the Front Grille (Right) and Front Grille (Left)”.
Disengage the tabs (2 locations) on both sides of the indicator panel. Then, remove the indicator panel.
4
Flip the indicator panel and remove the screws (2 pieces).
 How to remove the human and object sensor
1
2
Disconnect the connectors (2 locations) for the control board (signal receptor).
Remove the fixing screw (1 piece) of the human and object sensor. Then, remove the human and object
sensor.
3
Remove the electrical component cover (front) on the right side of the control board box. (There are two tabs
on top and one tab at the bottom.)
98
4
Disconnect the connector CNSTM4 (blue) connected to the control board.
 How to remove the control board (signal receptor)
1
Disconnect the connectors (3 locations) and disengage the tabs (3 locations) on the control board (signal
receptor). Then, remove the control board (signal receptor).
 How to remove the control board (indicator)
1
Disengage the tabs (2 locations) on the plastic indicator cover.
2
Flip the plastic indicator cover and disengage the tabs (5 locations).
3
4
Disconnect the connector (1 location) on the control board (signal receptor).
Disconnect the connectors (2 locations) on the control board (indicator) and remove the control board
(indicator).
99
16.1.8 Removing the Vertical Airflow Direction Louver
 How to remove the lower louver of the vertical airflow direction louver
1
2
3
Open the lower louver.
The back side of the lower louver is designed as follows: left – inserting type; center – hook engaging type;
and right – inserting into the motor type. Push the center hook to the right to disengage it.
Warp the center part of the lower louver towards you and pull out the left shaft and then the right shaft. Then,
remove the lower louver.
 How to remove the upper louver of the vertical airflow direction louver
1
Open the lower louver and then open the upper louver.
2
The back side of the upper louver is designed as follows: left – inserting type; center – hook engaging type;
and right – inserting into the motor type. Push the center hook to the left to disengage it.
Warp the center part of the upper louver towards you and pull out the left shaft and then right shaft. Then,
remove the upper louver.
3
100
16.1.9 Removing the Blowout Grille
1
2
3
4
5
Perform “16.1.1 Removing the Front Panel”.
Perform “16.1.2 Removing the Air Filters”.
Perform “16.1.3 Removing the Front Grille (Right) and Front Grille (Left)”.
Perform “16.1.4 Removing the Control Board Box”.
Remove the screws (1 piece each on right and left) located at the bottom side of the blowout grille.
6
Remove the accessory panel below the framework.
7
Disconnect the drain hose and pull the blowout grille to remove it.
 Note on disassembly: Be careful of the water in the drain hose and drain pan.
101
16.1.10 Removing the Drive Motor of the Vertical Airflow Direction Louver (Upper and
Lower Louvers)
1
2
3
4
5
6
Perform “16.1.1 Removing the Front Panel”.
Perform “16.1.2 Removing the Air Filters”.
Perform “16.1.3 Removing the Front Grille (Right) and Front Grille (Left)”.
Perform “16.1.4 Removing the Control Board Box”.
Perform “16.1.9 Removing the Blowout Grille”.
Remove the drive motor fixing screws (2 pieces each) on the right side of the blowout grille. Then, remove
the lower louver driving motor and upper louver driving motor.
16.1.11 Removing the Drive Motor of the Horizontal Airflow Direction Louver (Right and
Left Louvers)
1
2
3
4
5
6
7
Perform “16.1.1 Removing the Front Panel”.
Perform “16.1.2 Removing the Air Filters”.
Perform “16.1.3 Removing the Front Grille (Right) and Front Grille (Left)”.
Perform “16.1.4 Removing the Control Board Box”.
Perform “16.1.9 Removing the Blowout Grille”.
Remove the lower louver drive motor according to “16.1.12 Removing the Drive Motor of the Vertical Airflow
Direction Louver (Upper and Lower Louvers)”.
Remove the horizontal louver (right) drive motor.
o Remove the drive motor fixing screws (2 pieces) on the right side of the blowout grille and then remove
the horizontal louver (right) drive motor.
102
8
Remove the horizontal louver (left) drive motor.
o Remove the drive motor fixing screw (1 piece) on the right side of the blowout grille.
o Push the drive motor fixing tab (1 location) towards the direction indicated by the arrow to disengage it.
9
Release the lever from the horizontal louver and remove the drive motor. (A lever is connected to the
horizontal louver drive motor (both right and left).
o Press the stopper of the lever and pull the horizontal louver connecting lever towards you to release the
lever from the horizontal louver.
16.1.12 Removing the Indoor Motor and Cross Flow Fan
1
2
3
4
5
6
Perform “16.1.1 Removing the Front Panel”.
Perform “16.1.2 Removing the Air Filters”.
Perform “16.1.3 Removing the Front Grille (Right) and Front Grille (Left)”.
Perform “16.1.4 Removing the Control Board Box”.
Perform “16.1.9 Removing the Blowout Grille”.
Remove the screws (2 pieces) on the left side of the heat exchanger.
103
7
Loosen the fixing screw (1 screw) which fixes the cross flow fan to the indoor motor.
8
Pull out the cross flow fan while lifting up the left side of the heat exchanger.
9
Remove the screws (3 pieces) of the indoor motor cover and pull out the indoor motor together with the cover
to the right side to remove it.
104
16.2 Points of Disassembly (Outdoor Unit)
The electrical components of the outdoor unit are under high voltage
by the operation of the booster capacitor. Fully discharge the
capacitor before commencing a repair work. Failure to observe this
CAUTION: HIGH VOLTAGE warning could result in electric shock.
16.2.1 Removing the Outer Top Panel and Outer Front Panel
1
Remove the screws of the outer top panel.
o Remove 2 screws on the right, 2 screws on the left and 1 screw on the front side, all from the front view.
Then, remove the outer top panel.
2
Remove the screws of the outer front panel.
o Remove 2 screws on top, 3 screws at the bottom and 1 screw on the right side, all from the front view.
105
3
Disengage the tabs on the outer front panel (3 locations on the left side and 1 location on the right side).
Remove the outer front panel while pulling it slightly up.
16.2.2 Removing the Electrical Component Covers (2 & 3-way valve Cover and Terminal
Plate Cover)
1
Remove the screw (1 piece) of the electrical component cover (2 & 3-way valve cover). Slide the electrical
component cover (2 & 3-way valve cover) downward to remove it.
2
Remove the screws (2 pieces) and disengage the tabs (2 locations) of the electrical component cover
(terminal plate cover). Then, remove the electrical component cover (terminal plate cover).
106
16.2.3 Removing the Power-Supply Box
1
2
3
Perform “16.2.1 Removing the Outer Top Panel and Outer Front Panel”.
Perform “16.2.2 Removing the Electrical Component Covers (2 & 3-way valve Cover and Terminal Plate
Cover)”.
Disengage 4 tabs of the electrical component cover (the top cover of the control board) (2 locations each on
the right and left sides). Remove the electrical component cover (the top cover of the control board).
4
Remove the fixing screw (1 piece) of the power-supply box and the fixing screw (1 piece) of the powersupply
box cover.
5
Disconnect the connectors and terminals.
 Wiring from down side
Lead wires of the compressor (red, blue and yellow) ・・・・・ Disconnect the intermediate connector (white)
of the compressor lead wires.
o CN-HOT (white) ・・・・・ Electromagnetic coil (4-way valve) Wire color: Yellow
o 2 wires of the reactor connecting terminal Wire color: Gray and white
o CN-TANK (white) ・・・・・ Compressor temperature sensor
o CN-TH2 (red) ・・・・・Outdoor heat charger tank temperature sensor
 Wiring from left side
o CN-MTR1 (white) ・・・・・Outdoor motor
o CN-MTR2 (white) ・・・・・Outdoor motor
 Notes on assembly: When performing the wiring for the outdoor motor during replacement of the control
board, close the top cover of the control board before connecting the connectors of CN-MTR1 & 2 for
wiring. If the wiring is performed without closing the top cover of the control board, the wire may get
pinched while closing the cover.
 Wiring from right side
o CN-STM (white) ・・・・・ Electromagnetic coil (expansion valve)
o CN-TH1 (white) ・・・・・ Outside air temperature and pipe temperature sensor
o Lead wire of the electromagnetic coil (2-way valve V1) ・・・・・ Intermediate connector for the defrosting 2way valve coil (yellow)
o Lead wire of the electromagnetic coil (2-way valve V2) ・・・・・ Intermediate connector for the heat
charger tank 2-way valve coil (blue)
o CN-TH3 (blue) ・・・・・ Outdoor heat exchanger temperature sensor 2
o
107
6
7
Disconnect the connector of the indoor/outdoor connection wires (red, white and black) and remove the fixing
screw of the earth wire (green).
Remove the screw (1 piece) which fixes the power-supply box to the outer side panel (right).
8
Pull the outer side panel (right) towards you while pulling up the fixing tab (1 location) of the powersupply box
to disengage the tab.
9
Lift up the power-supply box to remove it.
16.2.4 Removing the Control Board
1
2
3
4
Perform “16.2.1 Removing the Outer Top Panel and Outer Front Panel”.
Perform “16.2.2 Removing the Electrical Component Covers (2 & 3-way valve Cover and Terminal Plate
Cover)”.
Perform “16.2.3 Removing the Power-Supply Box”.
Disengage the tabs (6 locations) and remove the metal cover.
 Notes on disassembly: During the replacement of outdoor control board, the control board and plastic
power-supply box are separated by removing the screws (2 pieces) on the soldered surface. These two
parts can be replaced as an integrated piece by applying silicon to them.
108
16.2.5
Removing the Propeller Fan and Outdoor Motor
1
2
Perform “16.2.1 Removing the Outer Top Panel and Outer Front Panel”.
Disengage 4 tabs of the electrical component cover (the top cover of the control board) (2 locations each on
the right and left sides). Remove the electrical component cover (the top cover of the control board).
3
Remove the fixing screw (1 piece) of the power-supply box.
4
Disconnect the connectors of CN-MTR1 (white) and CN-MTR2 (white) only.
 Notes on assembly: When performing the wiring after the replacement of the outdoor motor, close the top
cover of the control board before connecting the connectors of CN-MTR1 & 2 for wiring. If the wiring is
performed without closing the top cover of the control board, the wire may get pinched while closing the
cover.
Rotate the nut located in the center of the propeller fan clockwise. Then, remove the propeller fan.
5
109
6
Loosen the fixing screws (4 pieces) of the outdoor motor and remove the outdoor motor.
 Notes on assembly: When assembling the propeller fan and outdoor motor, the alignment mark located in
the center part of the propeller fan should be aligned with the slit in the shaft of the outdoor motor.
16.2.6
1
2
3
4
Removing the Outer Side Panel (Right)
Perform “16.2.1 Removing the Outer Top Panel and Outer Front Panel”.
Perform “16.2.2 Removing the Electrical Component Covers (2 & 3-way valve Cover and Terminal Plate
Cover)”.
Disconnect the connector of the indoor/outdoor connection wires (red, white and black) and remove the fixing
screw of the earth wire (green).
Remove the screw (1 piece) which fixes the power-supply box to the outer side panel (right).
110
5
Pull the outer side panel (right) towards you while pulling up the fixing tab (1 location) of the power-supply
box to disengage the tab.
6
Remove the fixing screws (5 pieces) of the outer side panel (right) and remove the outer side panel (right).
 Note on disassembly: When removing the outer side panel (right) by pulling it upward, be careful not to
allow the side of the outer side panel to come into contact with the pipe insulation material/tape to avoid
damage and tear of these materials.
111
16.2.7 Removing the Compressor and Heat Charger Tank
1
2
3
4
5
Perform “16.2.1 Removing the Outer Top Panel and Outer Front Panel”.
Perform “16.2.2 Removing the Electrical Component Covers (2 & 3-way valve Cover and Terminal Plate
Cover)”.
Perform “16.2.3 Removing the Power-Supply Box”.
Perform “16.2.6 Removing the Outer Side Panel (Right)”.
Remove the 4-way valve coil, expansion valve coil, defrosting 2-way valve coil and heat charger tank 2-way
valve coil. Then, remove the fixing screws of the acoustic insulation board (3 pieces on the right side and 1
piece at the front bottom).
 Note on assembly: When attaching the defrosting 2-way valve coil and heat charger tank 2-way valve coil,
6
attach the coils according to the colors indicated on the metal sheet located below the coils to the main
unit.
Cut the band which fixes the heat charger tank to the acoustic insulation board. Remove the acoustic
insulation board.
112
7
Remove the acoustic insulation material and then remove the nuts which fix the compressor (2 locations).
(The heat charger tank is attached to the compressor.)
 Note on disassembly: Use a box wrench to remove the nut located on the right side from the front view.
8
Remove the welded parts (4 locations).
o Remove 1 heat charger tank inlet, 2 heat charger tank outlet, 3 suction part and 4 discharge part.
113
9
Remove the compressor and heat charger tank.
o Cut the bands (2 locations) which fix the compressor to the heat charger tank.
o
Remove the clamp and separate the compressor and heat charger tank.
 Note on disassembly: Remove the heat charger tank sensor when replacing the heat charger tank.
16.2.8 Heat Charger () Replacement Procedure
16.2.8.1
1
2
3
Power-off the unit (remove plug and/or etc.,).
Collect all refrigerant into the cylinder by reclaiming machine.
As brazing work is involved, make sure the workshop and surrounding area is sufficient and safe.
16.2.8.2
1
2
3
4
Preparation
Process 1 (Dismantling of the Parts)
Remove control-board cover, top plate and front panel, pull out connecting wire, then remove side panel
(right).
Disconnect all connectors connected to control board.
Remove solenoid coils of 2-way, 4-way and expansion valves.
Disconnect of compressor connector, and remove control board.
 Heat charger: Part description is heat charge.
114
5
Cut off the band (small) for holding soundproof board and heat charger.
6
7
8
9
10
11
Remove 4 screws (see figure) and slide soundproof board towards to propeller fan side to remove.
Remove soundproof material at upper compressor.
Remove discharge pipe sensor.
Remove terminal cover from the compressor.
Remove 3 lead wires from compressor terminal.
Make sure remaining particular plate at the lower compressor terminal are removed.
12 Release Velcro on front of soundproof material and remove mounting nuts (left & right) for compressor by the
wrench.
115
16.2.8.3
1
Process 2 (Removing Brazing Point)
Removing butyl tape from piping prior to removing the brazing point.
Caution
Protection from the brazing flame should be considered during replacing the parts.
Firstly disconnect the pipe which entering to heat charger, discharging from heat charger, compressor
suction and the discharging pipes.
16.2.8.4
1
2
3
4
Separate Compressor from Heat Charger.
Take out blocks of compressor and heat charger from the base pan.
Cut off 2 bands (top and bottom) which holding compressor and heat charger, and lift the bracket to remove.
Remove the heat transferring sheet from the compressor once separate the heat charger from compressor.
Remove the sensor on heat charger by peeling off polyethylene sheet. Keep the sensor for re-use after the
brazing work.
116
16.2.8.5
Replacement of Heat Charger
Exchange with the new heat charger.
16.2.8.6
1
2
3
Stick Heat Transferring Sheet and Fix the Heat Charger on the Compressor by
Band
Peel-off the yellow film from new heat transferring sheet, and stick it on compressor body. Then peel off
transparent film for attaching heat charger. For sticking/adhering the heat transferring sheet, the datum
shown in figure on right. (in a vertical direction, longer side up)
When installing heat charger on compressor, make sure the three parts of compressor legs and heat charger
legs are engaged.
Install heat charge storage fixing bracket to the original position and firmly fix compressor and heat charger
with 2 resin bands (large).
Caution
1. Carefully read the instructions before proceeding to the replacement of heat transferring sheet.
2. When tightening resin bands, use pliers to fully pull in bands and make sure there is no cracking or
loosening. Cut off the end of band using nippers.
117
16.2.8.7
1
2
3
Fix-back Compressor and Connect the Tubes
Set compressor and heat charger block to the original position.
Tighten 2 mounting nuts of compressor by using wrench.
Braze-back the tubes you dismantled.
Caution
Protection from the brazing flame should be considered during brazing-back the parts, too.
4
5
After brazing tubes, use cooling rag (wet towel) to cool it down and put the materials such as butyl tape and
etc., as original conditions.
Reinstall the heat charger sensor to its original position and affix polyethylene sheet.
16.2.8.8
1
2
3
4
Put back electrical parts to their original position.
Install soundproof material around compressor and secure soundproof board.
Secure heat charger and soundproof board using resin band. This is to prevent compressor and heat charger
from falling. There is no need to fasten tightly.
Put back each coil and sensor to their original position.
16.2.8.9
1
2
Assemble Electrical Parts
Setting Exterior Parts
Set and attach side panel (right) by using screws.
Set control board and insert each connector.
16.2.8.10 Vacuuming, Filling Refrigerant and Checking for Gas Leaks
1
Return outdoor equipment to where it was. Vacuum, fill coolant and check for gas leaks then test.
118
16.2.9 Heat Charger Sensor Replacement Procedure
1
2
Disconnect the sensor connectors from control board. (CN-TH2: red)
Open Velcro on soundproof material to expose the sensor.
3
Insert flat screwdriver into heat charger fixing bracket to open it wide enough to remove the sensor.
(approximately 7mm)
Do not open the bracket too wide.
4
5
Remove polyethylene sheet to expose the heat charger sensor.
Replace with a new heat charger sensor, and fix it tightly with adhesive polyethylene sheet at its original
position.
119
17. Technical Data
17.1 Operation Characteristics
17.1.1
CS-VE9NKE CU-VE9NKE
Cooling Characteristic
Condition
Room temperature: 27°C (DBT), 19°C (WBT)
Piping length: 5m
Fc : 29Hz
120
Piping Length Characteristic Cooling
Condition
Room temperature: 27°C (DBT), 19°C (WBT)
Outdoor temperature: 35°C (DBT)
Fc : 29Hz
121
Heating Characteristic
Condition
Room temperature: 20°C (DBT)
Piping length: 5m
Fh : 37Hz
122
Piping Length Characteristic Heating
Condition
Room temperature: 20°C (DBT)
Outdoor temperature: 7.0°C (DBT), 6.0°C (WBT)
Fh : 37Hz
123
17.1.2
CS-VE12NKE CU-VE12NKE
Cooling Characteristic
Condition
Room temperature: 27°C (DBT), 19°C (WBT)
Piping length: 5m
Fc : 48Hz
124
Piping Length Characteristic Cooling
Condition
Room temperature: 27°C (DBT), 19°C (WBT)
Outdoor temperature: 35°C (DBT)
Fc : 48Hz
125
Heating Characteristic
Condition
Room temperature: 20°C (DBT)
Piping length: 5m
Fh : 49Hz
126
Piping Length Characteristic Heating
Condition
Room temperature: 20°C (DBT)
Outdoor temperature: 7.0°C (DBT), 6.0°C (WBT)
Fh : 49Hz
127
17.2 Sensible Capacity Chart

CS-VE9NKE CU-VE9NKE
230V
Outdoor Temp. (ºC)
30
35
TC
SHC
IP
TC
SHC
IP
TC
SHC
IP
17.0ºC
2.47
1.51
0.44
2.31
1.44
0.48
2.15
1.39
0.51
19.0ºC

40
Indoor wet
bulb temp.
2.5
0.49
19.5ºC
2.73
1.58
0.45
2.56
1.51
0.49
2.38
1.46
0.52
22.0ºC
2.98
1.63
0.46
2.78
1.57
0.49
2.59
1.51
0.53
CS-VE12NKE CU-VE12NKE
230V
Outdoor Temp. (ºC)
30
35
40
Indoor wet
bulb temp.
TC
SHC
IP
TC
SHC
IP
TC
SHC
IP
17.0ºC
3.47
2.01
0.80
3.25
1.92
0.86
3.02
1.85
0.93
3.5
2.0
0.88
19.5ºC
3.81
2.10
0.81
3.57
2.02
0.88
3.32
1.94
0.95
22.0ºC
4.16
2.18
0.83
3.88
2.09
0.90
3.61
2.02
0.96
19.0ºC
TC - Total Cooling Capacity (kW)
SHC - Sensible Heat Capacity (kW)
IP - Input Power
Indoor 27°C /19°C
Outdoor 35°C /24°C
128
18. Exploded View and Replacement Parts List
18.1 Indoor Unit
129
Note
The above exploded view is for the purpose of parts disassembly and replacement.
The non-numbered parts are not kept as standard service parts.
130
SAFETY REF NO.
PART NAME & DESCRIPTION
QTY.
CS-VE9NKE
CS-VE12NKE
1
CHASSIS
1
CWD50C1740
←
2
MOTOR (SMALL DC)
1
ARW7714AC
←
3
CROSS-FLOW FAN ASS'Y
1
CWH02K1068
←
4
BEARING ASS'Y
1
CWH64K1005
←
5
L-SHAPED PLATE
1
CWD601212
←
6
L-SHAPED PLATE
1
CWD601213
←
7
PARTICULAR PLATE
1
CWD911992B
←
8
HEAT EXCHANGER
1
CWB30C3987
←
9
UNION NUT
1
CWT251026
←
10
PARTICULAR PIECE
1
CWD933627
←
11
DISCHARGE GRILLE
1
CWE20C3311
←
12
GEARED STEPPING MOTORS
1
L6JAYYYH0030
←
13
VANE-COMPLETE (L)
1
CWE24C1336
←
14
VANE-COMPLETE (R)
1
CWE24C1423
←
15
FULCRUM
1
CWH621122
←
16
RAIN COVER
1
CWH811142
←
17
GEARED STEPPING MOTORS
1
L6JAYYYH0031
←
18
LEVER ARM
1
CWH651067
←
19
ROD
1
CWH661019
←
←
20
CAP
1
CWH521096
21
RAIN COVER
1
CWH811143
←
22
GEARED STEPPING MOTORS
1
L6JAYYYH0034
←
23
LEVER ARM
1
CWH651068
←
24
VANE
1
CWE241362
←
25
CAP
1
CWH521121
←
26
SHAFT
1
CWMH630001
←
27
GENERATOR COMPLETE
1
CWH94C0049
←
28
WIRE NET.RESIN NET
1
CWD041191
←
29
GEAR-COMPLETE
1
CWH68C1073
←
30
PARTICULAR PLATE
1
CWD91C0194
←
31
VANE-COMPLETE
1
CWE24C1348
←
32
UNION NUT
1
CWT251027
←
33
SENSOR-COMPLETE
1
CWA50C2645
←
34
HOLDER-SENSOR
1
CWH32137
←
35
FRAME FOR AIR FILTER
1
CWD01C1166
←
36
SENSOR-COMPLETE
1
CWA50C2997
←
37
AIR FILTER
2
CWD001315
←
38
PARTICULAR PLATE
1
CWD912160
←
39
GEAR-COMPLETE
1
CWH68C1048
←
40
GEARED STEPPING MOTORS
1
L6JAYYYH0017
←
41
SENSOR CASE
1
CWE18C1066
←
42
ELECTRONIC CONTROL-INDICATE
1
CWA74C1093
←
43
SENSOR CASE
1
CWE18C1070
←
44
ELECTRONIC CONTROL-RECEIVE
1
CWA747172
←
45
CONTROL PANEL
1
CWE312919
←
46
HI-VOLT PW SUPPLY(600V MORE)
1
N0GE1F000002
←
47
CONTROL BOARD COVER
1
CWH13C1245
←
48
FUSE(250V,2.5A)
1
K5D252YYA053
←
49
VARISTOR
1
ERZVEAV511
←
50
ELECTRONIC CONTROL-AUTO
1
CWA746050
←
51
CONTROL BOARD
1
CWH121025
←
52
CONTROL BOARD COVER
1
CWH131552
←
53
TERMINAL BOARD
1
CWA28C2570
←
54
HOLDER-P.S. CORD
1
CWH311083
←
55
POWER SUPPLY CORD
1
CWA20C3084
←
131
REMARK
O
O
O
O
O
O
O
O
O
O
SAFETY REF NO.
PART NAME & DESCRIPTION
QTY.
CS-VE9NKE
CS-VE12NKE
56
HOLDER-P.S. CORD
1
CWH311001
←
57
PARTICULAR PIECE
1
CWD933197
←
58
CONTROL BOARD COVER
1
CWH131370
←
59
ELECTRONINC CONTROL-MAIN
1
CWA73C6759
CWA73C6760
60
FRONT GRILLE FRAME
1
CWE121212
←
61
FRONT GRILLE FRAME
1
CWE121213
←
62
GRILLE DOOR
1
CWE14C1100
←
63
INTAKE GRILLE
1
CWE22C1788
←
64
GEAR
1
CWH681032
←
65
DRAIN HOSE
1
CWH851142
←
66
OPE.. INST. (EN,FR,ES,DE,IT,NL)
1
CWF568728
←
67
OPE.. INST. (BG,SE,DK,FI,NO,HR)
1
CWF568770
←
68
OPE.. INST. (RU,UA,KZ)
1
CWF568771
←
69
INSTAL. INST. (NO,SE,FI,DK)
1
CWF60C1732
←
70
INSTAL. INST. (EN,ES,IT,NL)
1
CWF60C1733
←
71
INSTAL. INST. (BG,FR,DE,HR)
1
CWF60C1734
←
72
INSTAL. INST. (RU,UA,KZ)
1
CWF60C1735
←
73
REMOTE CONTROL
1
CWA75C4116
←
74
INSTALLING HOLDER
1
CWH361115
←
75
SCREWS FOR INSTALLATION
1
CWH82C1461
←
76
PACKAGING-C.C.BOARD
1
CWG572706
←
77
SHOCK ABSORBER
1
CWG713379
←
78
SHOCK ABSORBER
1
CWG70C2171
←
79
SHOCK ABSORBER
1
CWG70C2172
←
80
PACKAGING-C.C.BOARD
1
CWG572654
←
81
PACKAGING-C.C.CASE
1
CWG568488
←
82
MODEL LABEL
2
CWF858656
CWF858614
(Note)
 All parts are supplied from ACBU, Japan (Vendor Code: 00025800).
 “O” marked parts are recommended to be kept in stock.
132
REMARK
O
18.2 Outdoor Unit
Note
The above exploded view is for the purpose of parts disassembly and replacement.
The non-numbered parts are not kept as standard service parts.
133
SAFETY
REF. NO.
DESCRIPTION & NAME
QTY.
CU-VE9NKE
CU-VE12NKE
1
CHASSIS
1
CWD50K2229
←
2
HEATER
1
CWA341072
←
3
ANTI-VIBRATION BUSHING
3
CWH50077
←
4
COMPRESSOR
1
CWB092610
←
5
MULTIBENT TUBE
1
CWT338949
←
6
PARTICULAR PIECE
1
CWD933310
←
7
SENSOR-COMPLETE
1
CWA50C2676
←
8
TERMINAL COVER
1
CWH171053
←
9
NUT-TERMINAL COVER
1
CWH7080300J
←
10
HEAT CHARGER
1
CWH90C0037X
←
11
SENSOR-COMPLETE
1
CWA50C2742XE
←
12
NUT
2
CWH56000J
←
13
FAN MOTOR BRACKET
1
CWD541140
←
14
MOTOR (SMALL DC)
1
ARS8406AC
←
15
SCREW
4
CWH55252J
←
16
PROPELLER FAN ASSY
1
CWH03K1067
←
17
NUT
1
CWH56053J
←
18
HEAT EXCHANGER
1
CWB32C3187
←
19
TUBE ASS'Y (4-WAYS VALVE)
1
CWT028012
←
20
3-WAYS VALVE
1
CWB011654
←
21
HOLDER-COUPLING
1
CWH351180
←
22
2-WAYS VALVE
1
CWB021540
←
23
TUBE ASS'Y (2-WAYS VALVE)
1
CWT028014
←
24
MANIFOLD TUBE
1
CWT071013
←
25
TUBE ASS'Y (STRAINER)
1
CWT028162
←
26
TUBE ASS'Y (EXPANSION VALVE)
1
CWT027235
←
27
TUBE ASS'Y (STRAINER)
1
CWT027224
←
28
TUBE ASS'Y (2-WAYS VALVE)
1
CWT028175
←
29
MANIFOLD TUBE
1
CWT071014
←
30
SOUND-PROOF BOARD
1
CWH15C1066
←
31
REACTOR
1
G0C392J00011
←
32
SOUND PROOF MATERIAL
1
CWG302688
←
←
REMARK
O
O
O
O
O
33
PARTICULAR PLATE-A'SSY
1
CWD90K1059
34
CONTROL BOARD COVER
1
CWH131550
←
35
TERMINAL BOARD ASS'Y
1
CWA28K1121
←
O
36
SENSOR-COMPLETE
1
CWA50C2765
←
O
37
HOLDER-SENSOR
1
CWH321091
←
38
ELECTRONIC CONTROL-MAIN
1
CWA73C6695R
CWA73C6696R
39
V-COIL 4-WAYS VALVE
1
CWA43C2400
←
40
SCREW
1
CWH551298
←
41
V-COIL EXPANTION VALVE
1
CWA43C2413
←
42
V-COIL 2-WAYS VALVE
1
CWA43C2426
←
43
SCREW
1
CWH551068J
←
44
V-COIL 2-WAYS VALVE
1
CWA43C2471
←
45
SCREW
1
CWH551068J
←
46
HOLDER-SENSOR
1
CWH321048
←
47
SENSOR-COMPLETE
1
CWA50C2746
←
48
HOLDER-SENSOR
1
CWH321048
←
49
CABINET SIDE PLATE
1
CWE04C1401
←
50
CABINET SIDE PLATE
1
CWE041673
←
51
SOUND PROOF MATERIAL
1
CWG302588
←
52
CABINET FRONT PLATE
1
CWE06C1436
←
53
CABINET TOP PLATE
1
CWE031130
←
54
WIRE NET.RESIN NET
1
CWD041143
←
55
UNION NUT 1/4"
1
CWT251048
←
134
O
O
SAFETY
REF. NO.
DESCRIPTION & NAME
QTY.
CU-VE9NKE
CU-VE12NKE
56
UNION NUT 3/8"
1
CWT251049
←
57
CONTROL BOARD COVER
1
CWH131551
←
58
HOLDER-P.S. CORD
1
CWH311082
←
59
CONTROL BOARD COVER
1
CWH13C1214
←
60
SCREW
2
CWH551060J
←
61
PACKAGING-C.C.CASE
1
CWG50C2950
←
62
SHOCK ABSORBER
1
CWG713492
←
63
SHOCK ABSORBER
1
CWG713493
←
64
PACKAGING-C.C.CASE
1
CWG568489
←
65
MODEL LABEL
4
CWF858652
CWF858653
REMARK
(Note)
 All parts are supplied from ACBU, Japan (Vendor Code: 00025800).
 “O” marked parts are recommended to be kept in stock.
Printed in Malaysia
YB0113-1
135
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