Panasonic CS-RE18PKR User manual

© Panasonic Corporation 2013
Order No: PAPAMY1308065CE
Indoor Unit Outdoor Unit
CS-RE18PKR
CS-RE24PKR
CS-RE28PKR
CU-RE18PKR
CU-RE24PKR
CU-RE28PKR
Destination
Oceania
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 product or 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 refrigeration circuit.

2
TABLE OF CONTENTS
PAGE PAGE
1. Safety Precautions .............................................3
2. Specifications .....................................................5
3. Features.............................................................11
4. Location of Controls and Components..........12
4.1 Indoor Unit ....................................................12
4.2 Outdoor Unit .................................................12
4.3 Remote Control ............................................12
5. Dimensions .......................................................13
5.1 Indoor Unit & Remote Control ......................13
5.2 Outdoor Unit .................................................14
6. Refrigeration Cycle Diagram ...........................16
6.1 CS-RE18PKR CU-RE18PKR .......................16
6.2 CS-RE24PKR CU-RE24PKR
CS-RE28PKR CU-RE28PKR .......................17
7. Block Diagram ..................................................18
7.1 CS-RE18PKR CU-RE18PKR .......................18
7.2 CS-RE24PKR CU-RE24PKR .......................19
7.3 CS-RE28PKR CU-RE28PKR .......................20
8. Wiring Connection Diagram ............................21
8.1 Indoor Unit ....................................................21
8.2 Outdoor Unit .................................................23
9. Electronic Circuit Diagram ..............................26
9.1 Indoor Unit ....................................................26
9.2 Outdoor Unit .................................................28
10. Printed Circuit Board .......................................31
10.1 Indoor Unit ....................................................31
10.2 Outdoor Unit .................................................32
11. Installation Instruction.....................................34
11.1 CS-RE18PKR CU-RE18PKR
CS-RE24PKR CU-RE24PKR .......................34
11.2 CS-RE28PKR CU-RE28PKR .......................41
12. Operation and Control .....................................50
12.1 Basic Function ..............................................50
12.2 Indoor Fan Motor Operation .........................51
12.3 Outdoor Fan Motor Operation ......................52
12.4 Airflow Direction............................................52
12.5 Quiet Operation (Cooling Mode/Cooling
Area of Dry Mode) ........................................54
12.6 Quiet Operation (Heating) ............................54
12.7 Powerful Mode Operation.............................55
12.8 Economy Mode Operation............................55
12.9 Timer Control................................................55
12.10 Auto Restart Control...................................56
12.11 Indication Panel..........................................56
12.12 HA Terminal (HAJEM-A) ............................56
13. Protection Control............................................58
13.1 Protection Control for All Operations............58
13.2 Protection Control for Cooling & Soft Dry
Operation......................................................60
13.3 Protection Control for Heating Operation .....61
14. Servicing Mode ................................................ 63
14.1 Auto OFF/ON Button ................................... 63
14.2 Remote Control Button................................ 65
15. Troubleshooting Guide................................... 67
15.1 Refrigeration Cycle System......................... 67
15.2 Relationship Between the Condition of the
Air Conditioner and Pressure and Electric
Current......................................................... 68
15.3 Breakdown Self Diagnosis Function............ 69
15.4 Error Codes Table ....................................... 70
15.5 Self-diagnosis Method................................. 72
16. Disassembly and Assembly Instructions ... 102
16.1 Indoor Electronic Controllers, Cross Flow
Fan and Indoor Fan Motor Removal
Procedures ................................................ 102
16.2 Outdoor Electronic Controller Removal
Procedure .................................................. 106
17. Technical Data ............................................... 107
17.1 Operation Characteristics .......................... 107
17.2 Sensible Capacity Chart............................ 119
18. Exploded View and Replacement Parts
List .................................................................. 121
18.1 Indoor Unit ................................................. 121
18.2 Outdoor Unit .............................................. 123

3
CAUTION
WARNING
WARNING
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.
This indication shows the possibility of causing death or serious injury.
This indication shows the possibility of causing injury or damage to properties.
The items to be followed are classified by the symbols:
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.
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 dealer or specialist for installation and servicing. If installation of 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 connecting 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, e.g. 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 model, use piping, flare nut and tools which is specified for R410A refrigerant. Using of existing (R22) piping, flare nut and tools
may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury.
Thickness or copper pipes used with R410A must be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm.
It is desirable that the amount of residual oil less than 40 mg/10 m.
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 cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury
etc.).
This symbol denotes item that is PROHIBITTED from doing.

4
CAUTION
WARNING
20. During pump down operation, stop the compressor before remove the refrigerant piping. (Removal of refrigeration piping while compressor is
operating and valves are opened condition 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 of 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 describe in catalog and manual.
25. Using of refrigerant other than the specified type may cause product damage, burst and injury etc.
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. CS/CU-RE18/24PKR
Power supply connection to the room air conditioner.
Use power supply cord 3 x 2.5 mm2(2.0 ~ 2.5HP) type designation 245 IEC 57 or heavier cord.
Connect the power supply cord of the air conditioner to the mains using one of the following method.
Power supply point should be in easily accessible place for power disconnection in case of emergency.
In some countries, permanent connection of this air conditioner to the power supply is prohibited.
1) Power supply connection to the receptacle using power plug.
Use an approved 16A (2.0HP) or 20A (2.5HP) power plug with earth pin for the connection to the socket.
2) Power supply connection to a circuit breaker for the permanent connection.
Use an approved 16A (2.0-HP) or 20A (2.5HP) circuit breaker for the permanent connection. It must be a double pole switch with a
minimum 3.0 mm contact gap.
8. CS/CU-RE28PKR
Power supply connection to the room air conditioner.
Use power supply cord 3 x 4.0 mm2(3.0HP) type designation 245 IEC 57 or heavier cord.
Connect the power supply cord of the air conditioner to the mains using one of the following method.
Power supply point should be in easily accessible place for power disconnection in case of emergency.
In some countries, permanent connection of this air conditioner to the power supply is prohibited.
1) Power supply connection to the receptacle using power plug.
Use an approved 25A (3.0HP) power plug with earth pin for the connection to the socket.
2) Power supply connection to a circuit breaker for the permanent connection.
Use an approved 25A (3.0HP) circuit breaker for the permanent connection. It must be a double pole switch with a minimum 3.0 mm
contact gap.
9. 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.
10. Installation or servicing work: It may need two people to carry out the installation or servicing work.
11. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
12. Do not sit or step on the unit, you may fall down accidentally.
13. Do not touch the sharp aluminum 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.

5
2. Specifications
Indoor CS-RE18PKR
Model
Outdoor CU-RE18PKR
Performance Test Condition AS
Phase, Hz Single, 50
Power Supply
V 230 240
Min. Mid. Max.
kW 0.90 5.00 5.80
BTU/h 3070 17100 19800
Capacity
kcal/h 770 4300 4990
Running Current A 6.0 5.8
Input Power W 230 1.30k 2.05k
W/W 3.91 3.85 / 2.5 2.83
Btu/hW 13.35 13.15 9.66
EER
kcal/hW 3.35 3.31 2.43
Power Factor % 94 93
dB-A 47 / 34 / 31
Indoor Noise (H / Lo / QLo)
Power Level dB 63 / 50 / 47
dB-A 48 / - / 43
Cooling
Outdoor Noise (H / Lo / QLo)
Power Level dB 62 / - / 57
kW 0.90 6.35 6.40
BTU/h 3070 21700 21800
Capacity
kcal/h 770 5460 5500
Running Current A 7.6 7.5
Input Power W 260 1.69k 1.71k
W/W 3.46 3.76 / 2.5 3.74
Btu/hW 11.81 12.84 12.75
COP
kcal/hW 2.96 3.23 3.22
Power Factor % 97 94
dB-A 44 / 33 / 29
Indoor Noise (H / Lo / QLo)
Power Level dB 60 / 49 / 45
dB-A 48 / - / 43
Heating
Outdoor Noise (H / Lo / QLo)
Power Level dB 62 / - / 57
Capacity kW 4.6
Input Power kW 1.51
H2
COP W/W 3.05
Capacity kW 6.40
Input Power kW 1.71
Powerful Heat
COP W/W 3.74
Max Current (A) / Max Input Power (W) 11.9 / 2.65k
Starting Current (A) 7.6
Type Hermetic Motor (Rotary)
Motor Type Brushless (6-poles)
Compressor
Output Power W 900

6
Indoor CS-RE18PKR
Model
Outdoor CU-RE18PKR
Type Cross-flow Fan
Material ASG30K1
Motor Type Transistor Motor (8-poles)
Input Power W 94.8
Output Power W 40
Cool rpm 870
QLo
Heat rpm 850
Cool rpm 950
Lo
Heat rpm 970
Cool rpm 1140
Me
Heat rpm 1170
Cool rpm 1340
Hi
Heat rpm 1370
Cool rpm 1460
Indoor Fan
Speed
SHi
Heat rpm 1520
Type Propeller Fan
Material PP
Motor Type Induction (6-poles)
Input Power W -
Output Power W 40
Cool rpm 530 - 550
Outdoor Fan
Speed Hi
Heat rpm -
Moisture Removal L/h (Pt/h) 2.8 (5.9)
Cool m3/min (ft3/min) 10.07 (356)
QLo
Heat m3/min (ft3/min) 9.92 (350)
Cool m3/min (ft3/min) 11.25 (397)
Lo
Heat m3/min (ft3/min) 11.71 (413)
Cool m3/min (ft3/min) 14.05 (496)
Me
Heat m3/min (ft3/min) 14.70 (519)
Cool m3/min (ft3/min)
(L/S) 17.0 (600) (283)
Hi
Heat m3/min (ft3/min)
(L/S) 17.7 (625) (295)
Cool m3/min (ft3/min) 18.92 (668)
Indoor
Airflow
SHi
Heat m3/min (ft3/min) 19.94 (704)
Cool m3/min (ft3/min) 46.7 (1650) - 48.4 (1710)
Outdoor
Airflow Hi
Heat m3/min (ft3/min) 46.7 (1650) - 48.4 (1710)
Control Device Expansion Valve
Refrigerant Oil cm3FV50S (450cm3)
Refrigeration
Cycle
Refrigerant Type g (oz) R410A, 1.31k (46.2)
Height (I/D / O/D) mm (inch) 290 (11-7/16) / 795 (31-5/16)
Width (I/D / O/D) mm (inch) 1070 (42-5/32) / 875 (34-15/32)
Dimension
Depth (I/D / O/D) mm (inch) 240 (9-15/32) / 320 (12-5/8)
Weight Net (I/D / O/D) kg (lb) 12 (26) / 52 (115)

7
Indoor CS-RE18PKR
Model
Outdoor CU-RE18PKR
Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2)
Standard length m (ft) 5.0 (16.4)
Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6)
I/D & O/D Height Different m (ft) 15 (49.2)
Additional Gas Amount g/m (oz/ft) 20 (0.2)
Piping
Length for Additional Gas m (ft) 10 (32.8)
Inner Diameter mm 16.7
Drain Hose
Length mm 650
Fin Material Aluminium (Pre Coat)
Fin Type Slit Fin
Row × Stage × FPI 2 × 15 × 19
Indoor Heat
Exchanger
Size (W × H × L) mm 810 × 315 × 25.4
Fin Material Aluminium (Blue Coated)
Fin Type Corrugated Fin
Row × Stage × FPI 2 × 36 × 18
Outdoor Heat
Exchanger
Size (W × H × L) mm 36.4 × 756 × 839:810.6
Material Polypropelene
Air Filter
Type One-touch
Power Supply Outdoor Power Supply
Power Supply Cord A Nil
Thermostat -
Protection Device -
Dry Bulb Wet Bulb
Maximum 32 23
Cooling
Minimum 16 11
Maximum 30 -
Indoor
Operation
Range Heating
Minimum 16 -
Maximum 46 26
Cooling
Minimum 5 4
Maximum 24 18
Outdoor
Operation
Range Heating
Minimum -15 -16
1. Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°F Wet Bulb) and outdoor air
temperature of 35°C Dry Bulb (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb)
2. 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)
3. Specifications are subjected to change without prior notice for further improvement.
4. Maximum heating capacity shown are the values based on powerful operation.

8
Indoor CS-RE24PKR CS-RE28PKR
Model
Outdoor CU-RE24PKR CU-RE28PKR
Performance Test Condition AS AS
Phase, Hz Single, 50 Single, 50
Power Supply
V 230 240 230 240
Min. Mid. Max. Min. Mid. Max.
kW 1.70 7.00 7.70 2.30 8.00 8.40
BTU/h 5800 23900 26300 7840 27300 28600
Capacity
kcal/h 1460 6020 6620 1980 6880 7220
Running Current A 9.8 9.5 11.2 10.9
Input Power W 430 2.11k 2.48k 460 2.39k 2.70k
W/W 3.95 3.32 / 2.0 3.10 5.00 3.35 / 2.0 3.11
BTU/hW 13.49 11.33 10.60 17.04 11.42 10.59
EER
kcal/hW 3.40 2.85 2.67 4.30 2.88 2.67
Power Factor % 94 93 93 91
dB-A 50 / 38 / 35 51 / 38 / 35
Indoor Noise (H / Lo / QLo)
Power Level dB 66 / 54 / 51 67 / 54 / 51
dB-A 54 / - / 49 55 / - / 50
Cooling
Outdoor Noise (H / Lo / QLo)
Power Level dB 68 / - / 63 73 / - / 68
kW 1.70 8.00 8.56 2.20 9.00 10.21
BTU/h 5800 27300 29200 7500 30700 34800
Capacity
kcal/h 1460 6880 7360 1890 7740 8780
Running Current A 10.0 9.7 12.2 11.9
Input Power W 380 2.21k 2.37k 500 2.63k 2.99k
W/W 4.47 3.62 / 2.5 3.61 4.40 3.42 / 2.0 3.41
BTU/hW 15.26 12.35 12.32 15.00 11.67 11.64
COP
kcal/hW 3.84 3.11 3.11 3.78 2.94 2.94
Power Factor % 96 95 94 92
dB-A 50 / 38 / 35 50 / 38 / 35
Indoor Noise (H / Lo / QLo)
Power Level dB 66 / 54 / 51 66 / 54 / 51
dB-A 54 / - / 49 55 / - / 50
Heating
Outdoor Noise (H / Lo / QLo)
Power Level dB 68 / - / 63 73 / - / 68
Capacity kW 6.2 7.4
Input Power kW 2.10 2.65
H2
COP W/W 2.95 2.79
Capacity kW 8.56 10.21
Input Power kW 2.37 2.99
Powerful Heat
COP W/W 3.61 3.41
Max Current (A) / Max Input Power (W) 14.6 / 3.20k 15.9 / 3.79k
Starting Current (A) 10.0 12.2
Type Hermetic Motor (Rotary) Hermetic Motor (Rotary)
Motor Type Brushless (4-poles) Brushless (4-poles)
Compressor
Output Power W 1.70k 1.70k

9
Indoor CS-RE24PKR CS-RE28PKR
Model
Outdoor CU-RE24PKR CU-RE28PKR
Type Cross-flow Fan Cross-flow Fan
Material ASG30K1 ASG30K1
Motor Type Transistor Motor (8-poles) Transistor Motor (8-poles)
Input Power W 94.8 94.8
Output Power W 40 40
Cool rpm 890 970
QLo
Heat rpm 960 1000
Cool rpm 990 1070
Lo
Heat rpm 1060 1100
Cool rpm 1280 1320
Me
Heat rpm 1310 1330
Cool rpm 1570 1570
Hi
Heat rpm 1560 1560
Cool rpm 1600 1600
Indoor Fan
Speed
SHi
Heat rpm 1600 1600
Type Propeller Fan Propeller Fan
Material PP PP
Motor Type DC (8-poles) DC (8-poles)
Input Power W - -
Output Power W 60 44 × 2
Top rpm 730 Cool : 660 Heat : 720
Outdoor Fan
Speed Hi
Bottom rpm 730 Cool : 700 Heat : 760
Moisture Removal L/h (Pt/h) 4.0 (8.5) 4.7 (9.9)
Cool m3/min (ft3/min) 11.07 (391) 12.20 (431)
QLo
Heat m3/min (ft3/min) 12.42 (439) 12.67 (447)
Cool m3/min (ft3/min) 12.54 (443) 13.66 (482)
Lo
Heat m3/min (ft3/min) 13.98 (494) 14.14 (499)
Cool m3/min (ft3/min) 16.47 (582) 17.45 (616)
Me
Heat m3/min (ft3/min) 17.15 (606) 17.94 (633)
Cool m3/min (ft3/min)
(L/S) 20.4 (720) (340) 21.5 (760) (359)
Hi
Heat m3/min (ft3/min)
(L/S) 20.8 (735) (347) 21.4 (755) (357)
Cool m3/min (ft3/min) 20.83 (736) 21.95 (775)
Indoor
Airflow
SHi
Heat m3/min (ft3/min) 21.53 (760) 22.0 (777)
Cool m3/min (ft3/min) 56.7 (2000) 75.4 (2660)
Outdoor
Airflow Hi
Heat m3/min (ft3/min) 56.7 (2000) 75.4 (2660)
Control Device Capillary Tube Expansion Valve
Refrigerant Oil cm3FV50S (800cm3) FV50S (800cm3)
Refrigeration
Cycle
Refrigerant Type g (oz) R410A, 1.70k (60.0) R410A, 2.15k (75.9)
Height (I/D / O/D) mm (inch) 290 (11-7/16) / 795 (31-5/16) 290 (11-7/16) / 1170 (46-3/32)
Width (I/D / O/D) mm (inch) 1070 (42-5/32) / 875 (34-15/32) 1070 (42-5/32) / 900 (35-7/16)
Dimension
Depth (I/D / O/D) mm (inch) 240 (9-15/32) / 320 (12-5/8) 240 (9-15/32) / 320 (12-5/8)
Weight Net (I/D / O/D) kg (lb) 12 (26) / 60 (132) 12 (26) / 74 (163)

10
Indoor CS-RE24PKR CS-RE28PKR
Model
Outdoor CU-RE24PKR CU-RE28PKR
Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 15.88 (5/8) 6.35 (1/4) / 15.88 (5/8)
Standard length m (ft) 5.0 (16.4) 5.0 (16.4)
Length range (min – max) m (ft) 3 (9.8) ~ 30 (98.4) 3 (9.8) ~ 30 (98.4)
I/D & O/D Height Different m (ft) 20 (65.6) 20 (65.6)
Additional Gas Amount g/m (oz/ft) 30 (0.3) 30 (0.3)
Piping
Length for Additional Gas m (ft) 10 (32.8) 10 (32.8)
Inner Diameter mm 16.7 16.7
Drain Hose
Length mm 650 650
Fin Material Aluminium (Pre Coat) Aluminium (Pre Coat)
Fin Type Slit Fin Slit Fin
Row × Stage × FPI 2 × 15 × 21 2 × 15 × 21
Indoor Heat
Exchanger
Size (W × H × L) mm 25.4 × 315 × 810 25.4 × 315 × 810
Fin Material Aluminium (Blue Coated) Aluminium (Blue Coated)
Fin Type Corrugated Fin Corrugated Fin
Row × Stage × FPI 2 × 30 × 19 2 × 44 × 19
Outdoor Heat
Exchanger
Size (W × H × L) mm 38.1 × 762 × 985.8:865.8 38.1 × 1117.6 × 863.8:833.8
Material Polypropelene Polypropelene
Air Filter
Type One-touch One-touch
Power Supply Outdoor Power Supply Outdoor Power Supply
Power Supply Cord A Nil Nil
Thermostat - -
Protection Device - -
Dry Bulb Wet Bulb Dry Bulb Wet Bulb
Maximum 32 23 32 23
Cooling
Minimum 16 11 16 11
Maximum 30 - 30 -
Indoor
Operation
Range Heating
Minimum 16 - 16 -
Maximum 46 26 46 26
Cooling
Minimum 5 4 5 4
Maximum 24 18 24 18
Outdoor
Operation
Range Heating
Minimum -15 -16 -15 -16
1. Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°F Wet Bulb) and outdoor air
temperature of 35°C Dry Bulb (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb)
2. 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)
3. Specifications are subjected to change without prior notice for further improvement.
4. Maximum heating capacity shown are the values based on powerful operation.

11
3. Features
Super Alleru-buster Filter
Inverter Technology
oWider output range
oEnergy saving
oQuick Cooling
oMore precise temperature control
Environment Protection
oNon-ozone depletion substances refrigerant (R410A)
Long Installation Piping
oLong piping up to 20 meter (2.0HP), 30 meter (2.5HP ~ 3.0HP)
Easy to use remote control
Quality Improvement
oRandom auto restart after power failure for safety restart operation
oGas leakage protection
oPrevent compressor reverse cycle
oInner protector to protect compressor
oNoise prevention during soft dry operation
Serviceability Improvement
oBreakdown Self Diagnosis function

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4. Location of Controls and Components
4.1 Indoor Unit
4.2 Outdoor Unit
4.3 Remote Control

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5. Dimensions
5.1 Indoor Unit & Remote Control

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5.2 Outdoor Unit
5.2.1 CU-RE18PKR CU-RE24PKR

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5.2.2 CU-RE28PKR

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6. Refrigeration Cycle Diagram
6.1 CS-RE18PKR CU-RE18PKR

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6.2 CS-RE24PKR CU-RE24PKR CS-RE28PKR CU-RE28PKR

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7. Block Diagram
7.1 CS-RE18PKR CU-RE18PKR

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7.2 CS-RE24PKR CU-RE24PKR

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7.3 CS-RE28PKR CU-RE28PKR