Please file and use this manual together with the service manual for Model No. CU-2S18SKH CU-3S27SBH CU-3S28SBH
CU-4S27SBH CU-4S34SBH, Order No. PAPAMY1611007CE.
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
repair the products dealt with in this service information by anyone else could result in serious injury or death.
IMPORTANT SAFETY NOTICE
There are special components used in this equipment which are important for safety. These parts are marked byin the Schematic
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of
manufacturer.
PRECAUTION OF LOW TEMPERATURE
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
List ..................................................................... 81
15.1 Indoor Unit .................................................. 81
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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
CAUTION
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.
This indication shows the possibility of causing death or serious injury.
This indication shows the possibility of causing injury or damage to properties.
This symbol denotes item that is PROHIBITED from doing.
WARNING
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, 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 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 0.6 mm. Never use copper pipes thinner than 0.6 mm.
It is desirable that the amount of residual oil less than 40 mg/10 m.
19. During installation, before run the compressor, confirm the refrigerant pipes are fixed. Operation of compressor without fixing the piping,
setting the valves at open condition, a burst may occur and cause injury.
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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 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 describe 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. 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.
8. Installation or servicing work: It may need two people to carry out the installation or servicing work.
9. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
10. Do not sit or step on the unit, you may fall down accidentally.
11. 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
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2. Specification
Model Indoor/Outdoor CS-MPS9SKH / CU-2S18SKH CS-MPS12SKH / CU-2S18SKH
Motor Type AC / Induction (4 poles) AC / Induction (4 poles)
Input Power W 51 - 58 51 - 58
Output Power W 24 24
Lo rpm 680 720
Speed
Moisture Removal L/h 1.6 1.8
Weight Net (I/D) kg (lb) 9 (20) 9 (20)
Piping
Power Supply Outdoor Outdoor
Power Supply Cord A - -
Thermostat - -
Protection Device - -
Indoor Operation Range
Me rpm 840 890
Hi rpm 1000 1060
Lo m
Me m3/min (ft3/m) 8.26 (292) 8.92 (315)
Hi m3/min (ft3/m) 10.10 (355) 10.90 (385)
Height (I/D) mm (inch) 290 (11-7/16) 290 (11-7/16)
Width (I/D) mm (inch) 870 (34-9/32) 870 (34-9/32)
Depth (I/D) mm (inch) 214 (8-7/16) 214 (8-7/16)
Pipe Diameter
(Liquid / Gas)
Inner Diameter mm 16.2 16.2
Length mm 550 550
Fin Material Aluminium (Pre coated) Aluminium (Pre coated)
Fin Type Slit Fin Slit Fin
Row x Stage x
FPI
Size (W x H x L) mm 610 x 315 x 25.4 610 x 315 x 25.4
Material Polypropelene Polypropelene
Type One-touch One-touch
DRY BULB WET BULB DRY BULB WET BULB
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Specifications are subject to change without notice for further improvement.
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Specifications are subject to change without notice for further improvement.
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Model Indoor/Outdoor CS-MPS15SKH / CU-3S27SBH CS-MPS18SKH / CU-3S27SBH
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Specifications are subject to change without notice for further improvement.
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Model Indoor/Outdoor CS-MPS9SKH / CU-3S28SBH CS-MPS12SKH / CU-3S28SBH
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Specifications are subject to change without notice for further improvement.
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Model Indoor/Outdoor CS-MPS15SKH / CU-3S28SBH CS-MPS18SKH / CU-3S28SBH
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Specifications are subject to change without notice for further improvement.
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Model Indoor/Outdoor CS-MPS24SKH / CU-3S28SBH
Performance Test Condition JIS
Power Supply
Min. Mid. Max.
Capacity
Running Current A 9.30 8.60
Cooling
Indoor Fan
Indoor Airflow
Dimension
Drain Hose
Indoor Heat
Exchanger
Air Filter
Input Power W 400 1.92k 2.07k
EER
Indoor Noise (H / L / QLo) dB-A 48 / 39 / -
Type Cross-flow fan
Material ASG30K1
Motor Type DC / Transistor (8 poles)
Input Power W 94.8
Output Power W 40
Lo rpm 1000
Speed
Moisture Removal L/h 3.3
Weight Net (I/D) kg (lb) 12 (26)
Piping
Power Supply Outdoor
Power Supply Cord A -
Thermostat -
Protection Device -
Indoor Operation Range
Me rpm 1200
Hi rpm 1400
Lo m
Me m3/min (ft3/m) 15.37 (543)
Hi m3/min (ft3/m) 18.50 (655)
Height (I/D) mm (inch) 290 (11-7/16)
Width (I/D) mm (inch) 1070 (42-5/32)
Depth (I/D) mm (inch) 240 (9-15/32)
Pipe Diameter
(Liquid / Gas)
Inner Diameter mm 16.2
Length mm 550
Fin Material Aluminium (Pre coated)
Fin Type Slit Fin
Row x Stage x
FPI
Size (W x H x L) mm 810 x 315 x 25.4
Material Polypropelene
Type One-touch
DRY BULB WET BULB
Phase, Hz Single, 50
V 220 240
kW 1.90 6.00 6.20
BTU/h 6480 20500 21100
kJ/h 6840 21600 22320
W/W 4.75 3.13 3.00
kJ/hW 17.10 11.25 10.78
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/min (ft3/m) 12.23 (432)
mm (inch) 6.35 (1/4) / 12.70 (1/2)
2 x 15 x 21
Maximum °C 32 23
Minimum °C 16 11
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Specifications are subject to change without notice for further improvement.
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Model Indoor/Outdoor CS-MPS9SKH / CU-4S27SBH CS-MPS12SKH / CU-4S27SBH
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Specifications are subject to change without notice for further improvement.
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Model Indoor/Outdoor CS-MPS15SKH / CU-4S27SBH CS-MPS18SKH / CU-4S27SBH
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Specifications are subject to change without notice for further improvement.
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Model Indoor/Outdoor CS-MPS9SKH / CU-34S34SBH CS-MPS12SKH / CU-4S34SBH
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Specifications are subject to change without notice for further improvement.
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Model Indoor/Outdoor CS-MPS15SKH / CU-4S34SBH CS-MPS18SKH / CU-4S34SBH
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Specifications are subject to change without notice for further improvement.
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Model Indoor/Outdoor CS-MPS24SKH / CU-4S34SBH CS-MPS28SKH / CU-4S34SBH
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Specifications are subject to change without notice for further improvement.
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Multi split combination possibility:
- A single outdoor unit enables air conditioning of up to two separate rooms for CU-2S18SKH.
- A single outdoor unit enables air conditioning of up to three separate rooms for CU-3S27SBH, CU-3S28SBH.
- A single outdoor unit enables air conditioning of up to four separate rooms for CU-4S27SBH, CU-4S34SBH.