Panasonic CS-VU9SKQ, CS-VU12SKQ, CS-VU18SKQ, CU-VU18SKQ, CU-VU9SKQ Service Manual
...
© Panasonic Corporation 2016.
Order No: PAPAMY1602026CE
iCOMFORT
TEMP
TEMP
SHOWER /
DIRECT
OFF/ON
R32
REFRIGERANT
R32
REFRIGERANT
Indoor Unit Outdoor Unit
CS-VU9SKQ
CS-VU12SKQ
CS-VU18SKQ
CU-VU9SKQ
CU-VU12SKQ
CU-VU18SKQ
Destination
Philippines
Dutch Antilles
Panama
Jamaica
Aruba
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.
CAUTION
R32 REFRIGERANT
– This Air Conditioner contains and operates with refrigerant R32.
THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL.
Refer to Commonwealth, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the
installation, maintenance and/or service of this product.
2
TABLE OF CONTENTS
PAGE PAGE
1. Safety Precautions ............................................. 3
2. Precaution for Using R32 Refrigerant .............. 6
3. Specification ..................................................... 10
4. Location of Controls and Components .......... 16
4.1 Indoor Unit .................................................. 16
4.2 Outdoor Unit ............................................... 16
4.3 Remote Control .......................................... 16
5. Dimensions ....................................................... 17
5.1 Indoor Unit .................................................. 17
5.2 Outdoor Unit ............................................... 18
6. Refrigeration Cycle Diagram ........................... 19
6.1 CS-VU9SKQ CU-VU9SKQ
CS-VU12SKQ CU-VU12SKQ ..................... 19
6.2 CS-VU18SKQ CU-VU18SKQ ..................... 20
7. Block Diagram .................................................. 21
7.1 CS-VU9SKQ CU-VU9SKQ
CS-VU12SKQ CU-VU12SKQ ..................... 21
7.2 CS-VU18SKQ CU-VU18SKQ ..................... 22
8. Wiring Connection Diagram ............................ 23
8.1 Indoor Unit .................................................. 23
8.2 Outdoor Unit ............................................... 24
9. Electronic Circuit Diagram .............................. 26
9.1 Indoor Unit .................................................. 26
9.2 Outdoor Unit ............................................... 27
10. Printed Circuit Board ....................................... 29
10.1 Indoor Unit .................................................. 29
10.2 Outdoor Unit ............................................... 32
11. Installation Instruction ..................................... 34
11.1 Select The Best Location ........................... 34
11.2 Indoor Unit .................................................. 35
11.3 Outdoor Unit ............................................... 40
12. Installation and Servicing Air Conditioner
using R32 .......................................................... 44
12.1 About R32 Refrigerant ................................ 44
12.2 Characteristics of R32 Refrigerant ............. 44
12.3 Refrigerant piping installation • Tools used in
services ...................................................... 46
12.4 New installation, Relocation, Repairing of
Refrigerant Cycle System The Procedures 50
12.5 Piping installation of R32 ............................ 51
12.6 Installation, Relocation, and Service .......... 52
12.7 Repairing of refrigerant cycle / Brazing point .
.................................................................... 56
12.8 <Reference> Analysis method for no error
code, no cooling / no warming .................... 62
13. Operation Control ............................................. 64
13.1 Basic Function ............................................ 64
13.2 Indoor Fan Motor Operation ....................... 65
13.3 Outdoor Fan Motor Operation .................... 65
13.4 Airflow Direction .......................................... 66
13.5 Shower / Direct Operation ..........................68
13.6 Timer Control ..............................................69
13.7 Sleep Mode Operation ...............................69
13.8 Random Auto Restart Control ....................70
13.9 Indication Panel ..........................................70
13.10 nanoe-G Operation .....................................70
13.11 In-filter Deactivation Operation ...................73
13.12 Dust Sensor Operation ...............................74
14. Protection Control ............................................75
14.1 Restart Control (Time Delay Safety Control) ..
....................................................................75
14.2 30 Seconds Forced Operation ...................75
14.3 Total Running Current Control ...................75
14.4 IPM (Power Transistor) Prevention Control75
14.5 Compressor Overheating Prevention Control
....................................................................76
14.6 Low Pressure Prevention Control (Gas
Leakage Detection) ....................................76
14.7 Low Frequency Protection Control 1 ..........76
14.8 Low Frequency Protection Control 2 ..........76
14.9 Outdoor Air Temperature Control ...............77
14.10 Cooling Overload Control ...........................77
14.11 Freeze Prevention Control 1 ......................77
14.12 Freeze Prevention Control 2 ......................77
14.13 Dew Prevention Control .............................77
14.14 Odor Cut Control ........................................78
15. Servicing Mode .................................................79
15.1 Auto Off/On Button .....................................79
15.2 Remote Control Button ...............................80
16. Troubleshooting Guide ....................................83
16.1 Refrigeration Cycle System ........................83
16.2 Breakdown Self Diagnosis Function ...........85
16.3 Error Code Table ........................................86
16.4 Troubleshooting Flowchart .........................87
17. Disassembly and Assembly Instructions ... 111
17.1 Indoor Electronic Controllers, Cross Flow
Fan and Indoor Fan Motor Removal
Procedures .............................................. 111
17.2 Outdoor Electronic Controller Removal
Procedure ................................................ 121
18. Technical Data ............................................... 124
18.1 Operation Characteristics ........................ 124
19. Exploded View and Replacement Parts List 130
19.1 Indoor Unit ............................................... 130
19.2 Outdoor Unit ............................................ 133
3
1. Safety Precautions
Read the following “SAFETY PRECAUTIONS” carefully before installation.
Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and
main circuit for the model to be installed.
The caution items stated here must be followed because these important contents are related to safety. The
meaning of each indication used is as below. Incorrect installation due to ignoring of the instruction will cause
harm or damage, and the seriousness is classified by the following indications.
WARNING
This indication shows the possibility of causing death or serious injury.
CAUTION
This indication shows the possibility of causing injury or damage to properties only.
The items to be followed are classified by the symbols:
This symbol denotes item that is PROHIBITTED from doing.
Explanation of symbols displayed on the indoor unit or outdoor unit.
WARNING
This symbol shows that this equipment uses a flammable refrigerant.
If the refrigerant is leaked, together with an external ignition source, there is a possibility of ignition.
CAUTION
This symbol shows that the Operation Instructions should be read carefully.
CAUTION
This symbol shows that a service personnel should be handling this equipment with reference to the
Installation Instructions.
CAUTION
This symbol shows that there is information included in the Operation Instructions and/or Installation Instructions.
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.
This appliance is not intended for accessibility by the general public.
WARNING
1.
Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. Any unfit
method or using incompatible material may cause product damage, burst and serious injury.
2.
Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit on veranda of a high rise building, child may
climb up to outdoor unit and cross over the handrail causing an accident.
3.
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.
4.
The appliance shall be stored in a well ventilated room with floor area larger than Amin (m
2
) [refer Table A] and without any
continuously operating ignition sources.
Keep away from open flames, any operating gas appliances or any operating electric heater. Else, it may explode and cause injury
or death.
5. Do not tie up the power supply cord into a bundle by band. Abnormal temperature rise on power supply cord may happen.
6. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
7. Do not sit or step on the unit, you may fall down accidentally.
8.
The appliance shall be installed, and/or operated in a room with floor area larger than Amin (m
2
) [refer Table A] and keep away from
ignition sources, such as heat/sparks/open flame or hazardous areas such as gas appliances, gas cooking, reticulated gas supply
systems or electric cooking appliances, etc.
9. Keep plastic bag (packaging material) away from small children, it may cling to nose and mouth and prevent breathing.
10.
When installing or relocating air conditioner, do not let any substance other than the specified refrigerant, eg. air etc mix into
refrigeration cycle (piping).
Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.
11.
Do not pierce or burn as the appliance is pressurized. Do not expose the appliance to heat, flame, sparks, or other sources of
ignition. Else, it may explode and cause injury or death.
12. Do not add or replace refrigerant other than specified type. It may cause product damage, burst and injury etc.
4
WARNING
13.
Do not perform flare connection inside a building or dwelling or room, when joining the heat exchanger of indoor unit with
interconnecting piping. Refrigerant connection inside a building or dwelling or room must be made by brazing or welding. Joint
connection of indoor unit by flaring method can only be made at outdoor or at outside of a building or dwelling or room. Flare
connection may cause gas leak and flammable atmosphere.
14.
For R32 model, use piping, flare nut and tools which is specified for R32 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 R32 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.
15.
Engage authorized dealer or specialist for installation. If installation done by the user is incorrect, it will cause water leakage, electrical
shock or fire.
16.
For refrigeration system work, install according to this installation instructions strictly. If installation is defective, it will cause water
leakage, electrical shock or fire
17.
Use the attached accessories parts and specified parts for installation. Otherwise, it will cause the set to fall, water leakage, fire or electrical
shock.
18.
Install at a strong and firm location which is able to withstand weight of the set. If the strength is not enough or installation is not properly
done, the set will drop and cause injury.
19.
For electrical work, follow the national regulation, legistration and this installation instructions. An independent circuit and single outlet must
be used. If electrical circuit capacity is not enough or defect found in the electrical work, it will cause electrical shock or fire.
20.
Do not use joint cable for indoor/outdoor connection cable. Use the specified indoor/outdoor connection cable, refer to instruction
CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable so that no external
force will have impact on the terminal.
If connection or fixing is not perfect, it will cause heat up or fire at the connection.
21.
Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause
fire or electrical shock.
22.
This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD), with
sensitivity of 30mA at 0.1 sec or less. Otherwise, it may cause electrical shock and fire in case of equipment breakdown or insulation
breakdown.
23.
During installation, install the refrigerant piping properly before running the compressor. Operation of compressor without fixing refrigeration
piping and valves at opened position will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.
24.
During pump down operation, stop the compressor before removing the refrigeration piping. Removal of refrigeration piping while
compressor is operating and valves are opened will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in
explosion, injury etc.
25.
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.
26.
After completion of installation, confirm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts with
fire.
27. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when the refrigerant contacts with fire.
28. Be aware that refrigerants may not contain an odour.
29.
This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and
telephone. Otherwise, it may cause electrical shock in case of equipment breakdown or insulation breakdown.
30. Do not modify the machine, part, material during repairing service.
31. 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.
32. Do not wrench the fasten terminal. Pull it out or insert it straightly.
33. Must not use other parts except original parts describe in catalog and manual.
5
CAUTION
1.
Do not install the unit in a place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of
the unit, it may cause fire.
2. Prevent liquid or vapor from entering sumps or sewers since vapor is heavier than air and may form suffocating atmospheres.
3.
Do not release refrigerant during piping work for installation, re-installation and during repairing a refrigerant parts.
Take care of the liquid refrigerant, it may cause frostbite.
4. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
5. Do not touch the sharp aluminum fin, sharp parts may cause injury.
CAUTION
6.
Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage
the furniture.
7.
Select an installation location which is easy for maintenance.
Incorrect installation, service or repair of this air conditioner may increase the risk of rupture and this may result in loss damage or
injury and/or property.
8.
Power supply connection to the room air conditioner.
Use power supply cord 3 × 1.5 mm
2
(1.0 ~ 1.5HP), 3 × 2.5 mm2 (2.0HP) type designation 60245 IEC 57 or heavier cord.
Connect the power supply cord of the air conditioner to the mains using one of the following method.
Power supply point should be in easily accessible place for power disconnection in case of emergency.
In some countries, permanent connection of this air conditioner to the power supply is prohibited.
1) Power supply connection to the receptacle using power plug.
Use an approved 15/16A (1.0 ~ 1.5HP), 16A (2.0HP) 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 16A (1.0 ~ 2.0HP) circuit breaker for the permanent connection. It must be a double pole switch with
minimum 3.0 mm contact gap.
9.
Installation work.
It may need two people to carry out the installation work.
10.
Pb free solder has 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)
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.
12.
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
13. Do not touch outdoor unit air inlet and aluminum fin. It may cause injury.
6
WARNING
CAUTION
2. Precaution for Using R32 Refrigerant
The basic installation work procedures are the same as conventional refrigerant (R410A, R22) models.
However, pay careful attention to the following points:
1.
Since the working pressure is higher than that of refrigerant R22 models, some of the piping and installation and service tools are
special.
(See “2.1. Special tools for R32 (R410A)”.)
Especially, when replacing a refrigerant R22 model with a new refrigerant R32 model, always replace the conventional piping and flare
nuts with the R32 and R410A piping and flare nuts on the outdoor unit side.
For R32 and R410A, the same flare nut on the outdoor unit side and pipe can be used.
2.
Models that use refrigerant R32 and R410A have a different charging port thread diameter to prevent erroneous charging with refrigerant
R22 and for safety.
Therefore, check beforehand. [The charging port thread diameter for R32 and R410A is 12.7 mm (1/2 inch).]
3.
Be more careful than R22 so that foreign matter (oil, water, etc.) does not enter the piping.
Also, when storing the piping, securely seal the opening by pinching, taping, etc. (Handling of R32 is similar to R410A.)
1.
Installation (Space)
Must ensure the installation of pipe-work shall be kept to a minimum. Avoid use dented pipe and do not allow acute bending.
Must ensure that pipe-work shall be protected from physical damage.
Must comply with national gas regulations, state municipal rules and legislation. Notify relevant authorities in accordance with all
applicable regulations.
Must ensure mechanical connections be accessible for maintenance purposes.
In cases that require mechanical ventilation, ventilation openings shall be kept clear of obstruction.
When disposal of the product, do follow to the precautions in #12 and comply with national regulations.
Always contact to local municipal offices for proper handling.
Interconnecting refrigerant pipework, i.e. pipework external to the unitary components, should be marked with a Class label (see
Figure 9.1 of Code of Practice) every two metres where the pipework is visible. This includes pipework located in a ceiling space or
any void which a person may access for maintenance or repair work within that space.
2.
Servicing
2-1. Service personnel
Any qualified person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from
an industry-accredited assessment authority, which authorizes their competence to handle refrigerants safely in accordance with an
industry recognised assessment specification.
Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the
assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable
refrigerants.
Servicing shall be performed only as recommended by the manufacturer.
2-2. Work
Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of
ignition is minimised.
For repair to the refrigerating system, the precautions in #2-2 to #2-8 must be followed before conducting work on the system.
Work shall be undertaken under a controlled procedure so as to minimize the risk of a flammable gas or vapor being present while
the work is being performed.
All maintenance staff and others working in the local area shall be instructed and supervised on the nature of work being carried
out.
Avoid working in confined spaces.
Wear appropriate protective equipment, including respiratory protection, as conditions warrant.
Ensure that the conditions within the area have been made safe by limit of use of any flammable material. Keep all sources of
ignition and hot metal surfaces away.
2-3. Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of
potentially flammable atmospheres.
Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e. non sparking, adequately
sealed or intrinsically safe.
In case of leakage/spillage happened, immediately ventilate area and stay upwind and away from spill/release.
In case of leakage/spillage happened, do notify persons down wind of the leaking/spill, isolate immediate hazard area and keep
unauthorized personnel out.
2-4. Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing equipment
shall be available at hand.
Have a dry powder or CO
2
fire extinguisher adjacent to the charging area.
7
CAUTION
2-5. No ignition sources
No person carrying out work in relation to a refrigeration system which involves exposing any pipe work that contains or has
contained flammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion.
He/She must not be smoking when carrying out such work.
All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing,
removing and disposal, during which flammable refrigerant can possibly be released to the surrounding space.
Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or
ignition risks.
“No Smoking” signs shall be displayed.
2-6. Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work.
A degree of ventilation shall continue during the period that the work is carried out.
The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
2-7. Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit for the purpose and to the correct specification.
At all times the manufacturer’s maintenance and service guidelines shall be followed.
If in doubt consult the manufacturer’s technical department for assistance.
The following checks shall be applied to installations using flammable refrigerants.
- The charge size is in accordance with the room size within which the refrigerant containing parts are installed.
- The ventilation machinery and outlets are operating adequately and are not obstructed.
- If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant.
- Marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected.
- Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance
which may corrode refrigerant containing components, unless the components are constructed of materials which are
inherently resistant to being corroded or are properly protected against being so corroded.
2-8. Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures.
Initial safety checks shall include but not limit to:-
- That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking.
- That there is no live electrical components and wiring are exposed while charging, recovering or purging the system.
- That there is continuity of earth bonding.
At all times the manufacturer’s maintenance and service guidelines shall be followed.
If in doubt consult the manufacturer’s technical department for assistance.
If a fault exists that could compromise safety, then no electr
ical supply shall be connected to the circuit until it is satisfactorily dealt
with.
If the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution shall be used.
The owner of the equipment must be informed or reported so all parties are advised thereinafter.
3.
Repairs to sealed components
During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to
any removal of sealed covers, etc.
If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak
detection shall be located at the most critical point to warn of a potentially hazardous situation.
Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in
such a way that the level of protection is affected. This shall include damage to cables, excessive number of connections, terminals
not made to original specification, damage to seals, incorrect fitting of glands, etc.
Ensure that apparatus is mounted securely.
Ensure that seals or sealing materials have not degraded such that they no longer serve the purpose of preventing the ingress of
flammable atmospheres.
Replacement parts shall be in accordance with the manufacturer’s specifications.
NOTE:
The use of silicon sealant may inhibit the effectiveness of some types of leak detection equipment.
Intrinsically safe components do not have to be isolated prior to working on them.
4.
Repair to intrinsically safe components
Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible
voltage and current permitted for the equipment in use.
Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere.
The test apparatus shall be at the correct rating.
Replace components only with parts specified by the manufacturer. Unspecified parts by manufacturer may result ignition of
refrigerant in the atmosphere from a leak.
5.
Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse
environmental effects.
The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.
6.
Detection of flammable refrigerants
Under no circumstances shall potential sources of ignition be used in the searching or detection of refrigerant leaks.
A halide torch (or any other detector using a naked flame) shall not be used.
8
CAUTION
7.
Leak detection methods
Electronic leak detectors shall be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need re-
calibration.
(Detection equipment shall be calibrated in a refrigerant-free area.)
Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used.
Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant
employed and the appropriate percentage of gas (25 % maximum) is confirmed.
Leak detection fluids are suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the
chlorine may react with the refrigerant and corrode the copper pipe-work.
If a leak is suspected, all naked flames shall be removed/extinguished.
If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by
means of shut off valves) in a part of the system remote from the leak. Oxygen free nitrogen (OFN) shall then be purged through
the system both before and during the brazing process.
8.
Removal and evacuation
When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used.
However, it is important that best practice is followed since flammability is a consideration.
The following procedure shall be adhered to:
• remove refrigerant -> • purge the circuit with inert gas -> • evacuate -> • purge again with inert gas ->
• open the circuit by cutting or brazing
The refrigerant charge shall be recovered into the correct recovery cylinders.
The system shall be “flushed” with OFN to render the unit safe.
This process may need to be repeated several times.
Compressed air or oxygen shall not be used for this task.
Flushing shall be achieved by breaking the vacuum in the system with OFN and continuing to fill until the working pressure is
achieved, then venting to atmosphere, and finally pulling down to a vacuum.
This process shall be repeated until no refrigerant is within the system.
When the final OFN charge is used, the system shall be vented down to atmospheric pressure to enable work to take place.
This operation is absolutely vital if brazing operations on the pipe work are to take place.
Ensure that the outlet for the vacuum pump is not close to any ignition sources and there is ventilation available.
9.
Charging procedures
In addition to conventional charging procedures, the following requirements shall be followed.
- Ensure that contamination of different refrigerants does not occur when using charging equipment.
- Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them.
- Cylinders shall be kept upright.
- Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.
- Label the system when charging is complete (if not already).
- Extreme care shall be taken not to over fill the refrigeration system.
Prior to recharging the system it shall be pressure tested with OFN (refer to #7).
The system shall be leak tested on completion of charging but prior to commissioning.
A follow up leak test shall be carried out prior to leaving the site.
Electrostatic charge may accumulate and create a hazardous condition when charging and discharging the refrigerant.
To avoid fire or explosion, dissipate static electricity during transfer by grounding and bonding containers and equipment before
charging/discharging.
10.
Decommissioning
Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its details.
It is recommended good practice that all refrigerants are recovered safely.
Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of
reclaimed refrigerant.
It is essential that electrical power is available before the task is commenced.
a)
Become familiar with the equipment and its operation.
b)
Isolate system electrically.
c)
Before attempting the procedure ensure that:
• mechanical handling equipment is available, if required, for handling refrigerant cylinders;
• all personal protective equipment is available and being used correctly;
• the recovery process is supervised at all times by a competent person;
• recovery equipment and cylinders conform to the appropriate standards.
d)
Pump down refrigerant system, if possible.
e)
If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
f)
Make sure that cylinder is situated on the scales before recovery takes place.
g)
Start the recovery machine and operate in accordance with manufacturer’s instructions.
h)
Do not over fill cylinders. (No more than 80 % volume liquid charge).
i)
Do not exceed the maximum working pressure of the cylinder, even temporarily.
j)
When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the
equipment are removed from site promptly and all isolation valves on the equipment are closed off.
k)
Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.
Electrostatic charge may accumulate and create a hazardous condition when charging or discharging the refrigerant.
To avoid fire or explosion, dissipate static electricity during transfer by grounding and bonding containers and equipment before
charging/discharging.
9
CAUTION
11.
Labelling
Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant.
The label shall be dated and signed.
Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant.
12.
Recovery
When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all
refrigerants are removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed.
Ensure that the correct number of cylinders for holding the total system charge are available.
All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the
recovery of refrigerant).
Cylinders shall be complete with pressure relief valve and associated shut-off valves in good working order.
Recovery cylinders are evacuated and, if possible, cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall
be suitable for the recovery of flammable refrigerants.
In addition, a set of calibrated weighing scales shall be available and in good working order.
Hoses shall be complete with leak-free disconnect couplings and in good condition.
Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any
associated electrical components are sealed to prevent ignition in the event of a refrigerant release.
Consult manufacturer if in doubt.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant Waste
Transfer Note arranged.
Do not mix refrigerants in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain
that flammable refrigerant does not remain within the lubricant.
The evacuation process shall be carried out prior to returning the compressor to the suppliers.
Only electric heating to the compressor body shall be employed to accelerate this process.
When oil is drained from a system, it shall be carried out safely.
10
3. Specification
Model
Indoor CS-VU9SKQ
Outdoor CU-VU9SKQ
Performance Test Condition JIS
Power Supply
Phase, Hz Single, 60
V 220 230
Min. Mid. Max. Min. Mid. Max.
Cooling
Capacity
kW 0.84 2.65 3.20 0.84 2.65 3.20
BTU/h 2860 9040 10900 2860 9040 10900
kJ/h 3020 9540 11520 3020 9540 11520
Running Current A - 3.0 - - 2.8 -
Input Power W 225 600 880 225 600 880
EER
W/W 3.73 4.42 3.64 3.73 4.42 3.64
BTU/hW 12.71 15.07 12.39 12.71 15.07 12.39
kJ/hW 13.42 15.90 13.09 13.42 15.90 13.09
Power Factor % - 91 - - 93 -
Indoor Noise (H / L / QLo) dB-A 36 / 25 / 18 36 / 25 / 18
Outdoor Noise (H / L / QLo) dB-A 47 / - / - 47 / - / -
Max Current (A) / Max Input Power (W) 5.0 / 1.04k
Starting Current (A) 3.0
Compressor
Type Hermetic Motor (Rotary)
Motor Type Brushless (6 poles)
Output Power W 650
Indoor Fan
Type Cross-Flow Fan
Material ASG20K1
Motor Type DC / Transistor (8 poles)
Input Power W 47.3 - 47.3
Output Power W 30
Speed
QLo rpm 610
Lo rpm 780
Me rpm 960
Hi rpm 1150
SHi rpm 1270
Outdoor Fan
Type Propeller
Material PP
Motor Type AC / Induction (6 poles)
Input Power W -
Output Power W 27
Speed Hi rpm 950 970
Moisture Removal L/h (Pt/h) 1.6 (3.4)
Indoor
Airflow
QLo m
3
/min (ft3/m) 5.70 (201)
Lo m3/min (ft3/m) 7.30 (258)
Me m3/min (ft3/m) 8.90 (314)
Hi m3/min (ft3/m) 10.50 (370)
SHi m3/min (ft3/m) 11.20 (396)
Outdoor
Airflow
Hi m
3
/min (ft3/m) 29.00 (1025) 29.30 (1035)
11
Model
Indoor CS-VU9SKQ
Outdoor CU-VU9SKQ
Refrigeration
Cycle
Control Device Capillary Tube
Refrigerant Oil cm3 FW50S (320)
Refrigerant Type g (oz) R32, 710 (25.1)
Dimension
Height (I/D / O/D) mm (inch) 280 (11-1/32) / 542 (21-11/32)
Width (I/D / O/D) mm (inch) 950 (37-13/32) / 780 (30-23/32)
Depth (I/D / O/D) mm (inch) 318 (12-17/32) / 289 (11-13/32)
Weight Net (I/D / O/D) kg (lb) 13 (29) / 29 (64)
Piping
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) ~ 20 (65.6)
I/D & O/D Height different m (ft) 15 (49.2)
Additional Gas Amount g/m (oz/ft) 10 (0.1)
Length for Additional Gas m (ft) 7.5 (24.6)
Drain Hose
Inner Diameter mm 16.2
Length mm 550
Indoor Heat
Exchanger
Fin Material Aluminium (Pre Coated)
Fin Type Slit Fin
Row × Stage × FPI 2 × 15 × 21
Size (W × H × L) mm 675 × 315 × 25.4
Outdoor
Heat
Exchanger
Fin Material Aluminium (Blue Coated)
Fin Type Slit Fin
Row × Stage × FPI 2 × 24 × 17
Size (W × H × L) mm 25.4 × 504 × 693.4:713.4
Air Filter
Material Polypropelene
Type One-touch
Power Supply Outdoor
Power Supply Cord A -
Thermostat -
Protection Device -
Dry Bulb Wet Bulb
Indoor Operation Range
Maximum °C 32 23
Minimum °C 16 11
Outdoor Operation Range
Maximum °C 43 26
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).
12
Model
Indoor CS-VU12SKQ
Outdoor CU-VU12SKQ
Performance Test Condition JIS
Power Supply
Phase, Hz Single, 60
V 220 230
Min. Mid. Max. Min. Mid. Max.
Cooling
Capacity
kW 1.02 3.40 4.20 1.02 3.40 4.20
BTU/h 3480 11600 14300 3480 11600 14300
kJ/h 3670 12240 15120 3670 12240 15120
Running Current A - 4.0 - - 3.8 -
Input Power W 285 830 1.15k 285 830 1.15k
EER
W/W 3.58 4.10 3.65 3.58 4.10 3.65
BTU/hW 12.21 13.98 12.43 12.21 13.98 12.43
kJ/hW 12.88 14.75 13.15 12.88 14.75 13.15
Power Factor % - 94 - - 95 -
Indoor Noise (H / L / QLo) dB-A 41 / 27 / 19 41 / 27 / 19
Outdoor Noise (H / L / QLo) dB-A 48 / - / - 48 / - / -
Max Current (A) / Max Input Power (W) 6.5 / 1.42k
Starting Current (A) 4.0
Compressor
Type Hermetic Motor (Rotary)
Motor Type Brushless (6 poles)
Output Power W 650
Indoor Fan
Type Cross-Flow Fan
Material ASG20K1
Motor Type DC / Transistor (8 poles)
Input Power W 47.3 - 47.3
Output Power W 30
Speed
QLo rpm 640
Lo rpm 830
Me rpm 1110
Hi rpm 1390
SHi rpm 1510
Outdoor Fan
Type Propeller
Material PP
Motor Type AC / Induction (6 poles)
Input Power W -
Output Power W 27
Speed Hi rpm 950 970
Moisture Removal L/h (Pt/h) 2.0 (4.2)
Indoor
Airflow
QLo m
3
/min (ft3/m) 6.00 (212)
Lo m3/min (ft3/m) 7.70 (272)
Me m3/min (ft3/m) 10.20 (360)
Hi m3/min (ft3/m) 12.00 (425)
SHi m3/min (ft3/m) 12.40 (498)
Outdoor
Airflow
Hi m
3
/min (ft3/m) 29.00 (1020) 29.30 (1030)
13
Model
Indoor CS-VU12SKQ
Outdoor CU-VU12SKQ
Refrigeration
Cycle
Control Device Capillary Tube
Refrigerant Oil cm3 FW50S (320)
Refrigerant Type g (oz) R32, 760 (26.8)
Dimension
Height (I/D / O/D) mm (inch) 280 (11-1/32) / 542 (21-11/32)
Width (I/D / O/D) mm (inch) 950 (37-13/32) / 780 (30-23/32)
Depth (I/D / O/D) mm (inch) 318 (12-17/32) / 289 (11-13/32)
Weight Net (I/D / O/D) kg (lb) 13 (29) / 29 (64)
Piping
Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2)
Standard length m (ft) 5.0 (16.4)
Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6)
I/D & O/D Height different m (ft) 15 (49.2)
Additional Gas Amount g/m (oz/ft) 10 (0.1)
Length for Additional Gas m (ft) 7.5 (24.6)
Drain Hose
Inner Diameter mm 16.2
Length mm 550
Indoor Heat
Exchanger
Fin Material Aluminium (Pre Coated)
Fin Type Slit Fin
Row × Stage × FPI 2 × 15 × 21
Size (W × H × L) mm 675 × 315 × 25.4
Outdoor
Heat
Exchanger
Fin Material Aluminium (Blue Coated)
Fin Type Slit Fin
Row × Stage × FPI 2 × 24 × 17
Size (W × H × L) mm 25.4 × 504 × 693.4:713.4
Air Filter
Material Polypropelene
Type One-touch
Power Supply Outdoor
Power Supply Cord A -
Thermostat -
Protection Device -
Dry Bulb Wet Bulb
Indoor Operation Range
Maximum °C 32 23
Minimum °C 16 11
Outdoor Operation Range
Maximum °C 43 26
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).
14
Model
Indoor CS-VU18SKQ
Outdoor CU-VU18SKQ
Performance Test Condition JIS
Power Supply
Phase, Hz Single, 60
V 220 230
Min. Mid. Max. Min. Mid. Max.
Cooling
Capacity
kW 1.10 5.20 5.80 1.10 5.20 5.80
BTU/h 3750 17700 19800 3750 17700 19800
kJ/h 3960 18720 20880 3960 18720 20880
Running Current A - 7.0 - - 6.7 -
Input Power W 290 1.45k 1.67k 290 1.45k 1.67k
EER
W/W 3.79 3.59 3.47 3.79 3.59 3.47
BTU/hW 12.93 12.21 11.86 12.93 12.21 11.86
kJ/hW 13.66 12.91 12.50 13.66 12.91 12.50
Power Factor % - 94 - - 94 -
Indoor Noise (H / L / QLo) dB-A 46 / 36 / 33 46 / 36 / 33
Outdoor Noise (H / L / QLo) dB-A 49 / - / - 49 / - / -
Max Current (A) / Max Input Power (W) 10.0 / 2.15k
Starting Current (A) 7.0
Compressor
Type Hermetic Motor
Motor Type Brushless (6 poles)
Output Power W 900
Indoor Fan
Type Cross-Flow Fan
Material ASG20K1
Motor Type DC / Transistor (8 poles)
Input Power W 94.8 - 94.8
Output Power W 30
Speed
QLo rpm 1020
Lo rpm 1110
Me rpm 1400
Hi rpm 1690
SHi rpm 1810
Outdoor Fan
Type Propeller
Material PP
Motor Type AC / Induction (6 poles)
Input Power W -
Output Power W 40
Speed Hi rpm 900
Moisture Removal L/h (Pt/h) 2.9 (6.1)
Indoor
Airflow
QLo m
3
/min (ft3/m) 9.40 (332)
Lo m3/min (ft3/m) 10.20 (360)
Me m3/min (ft3/m) 12.00 (424)
Hi m3/min (ft3/m) 13.40 (475)
SHi m3/min (ft3/m) 15.20 (537)
Outdoor
Airflow
Hi m
3
/min (ft3/m) 34.90 (1230)
15
Model
Indoor CS-VU18SKQ
Outdoor CU-VU18SKQ
Refrigeration
Cycle
Control Device Expansion Valve
Refrigerant Oil cm3 FW50S (450)
Refrigerant Type g (oz) R32, 1.00k (35.3)
Dimension
Height (I/D / O/D) mm (inch) 280 (11-1/32) / 619 (24-3/8)
Width (I/D / O/D) mm (inch) 950 (37-13/32) / 824 (32-15/32)
Depth (I/D / O/D) mm (inch) 318 (12-17/32) / 299 (11-25/32)
Weight Net (I/D / O/D) kg (lb) 13 (29) / 33 (73)
Piping
Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2)
Standard length m (ft) 5.0 (16.4)
Length range (min – max) m (ft) 3 (9.8) ~ 30 (98.4)
I/D & O/D Height different m (ft) 20 (65.6)
Additional Gas Amount g/m (oz/ft) 15 (0.2)
Length for Additional Gas m (ft) 10 (32.8)
Drain Hose
Inner Diameter mm 16.2
Length mm 550
Indoor Heat
Exchanger
Fin Material Aluminium (Pre Coated)
Fin Type Slit Fin
Row × Stage × FPI 2 × 15 × 21
Size (W × H × L) mm 675 × 315 × 25.4
Outdoor
Heat
Exchanger
Fin Material Aluminium (Blue Coated)
Fin Type Slit Fin
Row × Stage × FPI 2 × 28 × 17
Size (W × H × L) mm 25.4 × 588 × 775.4:795.4
Air Filter
Material Polypropelene
Type One-touch
Power Supply Outdoor
Power Supply Cord A -
Thermostat -
Protection Device -
Dry Bulb Wet Bulb
Indoor Operation Range
Maximum °C 32 23
Minimum °C 16 11
Outdoor Operation Range
Maximum °C 43 26
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).
16
4. Location of Controls and Components
4.1 Indoor Unit
Remote control receiver (Max. 8m)
(Indicator)
(White/Red) (White) (White) (White)
Intake Grille
Dust Sensor
Air Filter B
Indicator Flap
Air Filter A
Horizontal Airflow
Direction Louver
• Do not adjust by hand.
Vertical Airflow
Direction Louver
• Do not adjust by hand.
Auto OFF/ON button
• Use when remote control
nanoe-G Generator
• Do not touch during operation.
is misplaced or a
malfunction occurs.
4.2 Outdoor Unit
4.3 Remote Control
iCOMFORT
TEMP
TEMP
SHOWER /
DIRECT
OFF/ON
iCOMFORT
TEMP
TEMP
SHOWER /
DIRECT
OFF/ON
Remote control display
iCOMFORT operation
SHOWER / DIRECT operation
OFF/ON
231
Fan Speed selection
Airflow direction selection
nanoe-G operation
Operation mode
Temperature setting
Timer setting
Check
SLEEP operation
Clock setting
17
5. Dimensions
5.1 Indoor Unit
Relative position between the indoor unit and the installation plate <Front View>
Left
piping
hole
Right
piping
hole
Indoor unit
external
dimensions
line
Installation
plate
Unit : mm
13.5
264
80
127
741
424 448
151
80
128
256
306
<Top View>
<Front View>
<Bottom View>
<Rear View>
<Side View><Side View>
<Remote Control Holder>
<Remote Control>
59
16569
64
950
355 (41-61)
Left piping
hole
Air outlet
direction
Air inlet
direction
Air inlet
direction
280
318
42
60
Right piping
hole
Gas side
Liquid side
iCOMFORT
TEMP
TEMP
SHOWER /
DIRECT
OFF/ON
18
5.2 Outdoor Unit
5.2.1 CU-VU9SKQ CU-VU12SKQ
(18)
69.5 61.6
542
28939
570
22
(104.7)
67.6
780
85.5
155.2 34.3
60.5104.9
Space necessary
for installation
Anchor Bolt Pitch
320 × 570
1000 mm
100 mm
100 mm
<Side View>
<Side View>
<Front View>
<Top View>
Unit: mm
2-way valve at
Liquid side
(High Pressure)
3-way valve at
Gas side
(Low Pressure)
320
R32
REFRIGERANT
5.2.2 CU-VU18SKQ
<Top View>
<Front View><Side View>
<Side View>
Anchor Bolt Pitch
330 × 540
Space necessary for
installation
100 mm
100 mm
1000 mm
Unit : mm
3-way valve at Gas side
(Low Pressure)
2-way valve at Liquid side
(High Pressure)
22 (124) (62.6)
330
619
167
97
69
(20)
62
32
540 160
824 68.7
37 299
R32
REFRIGERANT
19
6. Refrigeration Cycle Diagram
6.1 CS-VU9SKQ CU-VU9SKQ CS-VU12SKQ CU-VU12SKQ
INDOOR OUTDOOR
INTAKE
TEMP.
SENSOR
PIPE
TEMP.
SENSOR
INTAKE
TEMP.
SENSOR
PIPE
TEMP.
SENSOR
LIQUID
SIDE
2-WAY
VALVE
3-WAY
VALVE
GAS
SIDE
COOLING
HEAT EXCHANGER
(EVAPORATOR)
HEAT EXCHANGER
(CONDENSER)
COMPRESSOR
TEMP. SENSOR
STRAINER
CAPILLARY TUBE
COMPRESSOR
20
6.2 CS-VU18SKQ CU-VU18SKQ
INDOOR OUTDOOR
INTAKE
TEMP.
SENSOR
PIPE
TEMP.
SENSOR
INTAKE
TEMP.
SENSOR
PIPE
TEMP.
SENSOR
LIQUID
SIDE
2-WAY
VALV E
3-WAY
VALV E
GAS
SIDE
COOLING
HEAT EXCHANGER
(EVAPORATOR)
HEAT EXCHANGER
(CONDENSER)
COMPRESSOR
TEMP.
SENSOR
STRAINER
COMPRESSOR
EXPANSION
VALV E
21
7. Block Diagram
7.1 CS-VU9SKQ CU-VU9SKQ CS-VU12SKQ CU-VU12SKQ
SINGLE
PHASE
POWER
SUPPLY
FUSE101
FUSE103
FUSE 104
FUSE 102
PTC
NTC
TH2
PTC1
RY-AC1
RY-PWR
RY-FM
REACTOR
TEMP.
FUSE
FUSE 301
M
CR1
C-FM
CT102
FAN
MOTOR
M
1~
SC
NOISE FILTER
SC
1
2
N
L
3
(INDOOR UNIT) (OUTDOOR UNIT)
MS
3 ~
U
22
7.2 CS-VU18SKQ CU-VU18SKQ
FUSE104
FUSE101
SINGLE
PHASE
POWER
SUPPLY
FUSE103
TEMP.
FUSE
FUSE 301
M
N
L
(INDOOR UNIT) (OUTDOOR UNIT)
TH1
NTC
CT101
PTC
PTC1
RY-AC
RY-PWR
REACTOR
NOISE FILTER
1
2
3
SC
MS
3 ~
MS
3 ~
FUSE3
FUSE2
IC19
TH2
NTC
TH3
NTC
SC
U
23
8. Wiring Connection Diagram
8.1 Indoor Unit
Y/G
EVAPORATOR
FAN MOTOR
CN-FM (WHT)
Y
1
4
7
B
W
BL
R
M
FUSE301
T3.15A L250V
TEMP. FUSE
102°C (3A)
123
AC303 (WHT)
AC304 (RED)
AC306 (BLK)
G301 (GRN)
W
R
G
BL
TERMINAL
BOARD
ELECTRONIC CONTROLLER
(MAIN)
(SW501)
MECHA LOUVER ARM-R
(REVOLUTION)
CN-STM1
(GRN)
R
1
5
1
5
Y
BR
M
O
PE
MECHA VANE-R
(ROTATION)
CN-STM4
(BLU)
O
1
5
1
5
BR
Y
M
PE
R
INTAKE LOUVER MOTOR
CN-STM6
(WHT)
BR
1
5
1
5
R
O
M
Y
P
SUCTION TEMPERATURE SENSOR (THERMISTOR)
PIPING TEMPERATURE SENSOR (THERMISTOR)
2
1
CN-TH2
(RED)
CN-RMT
(WHT)
4
1
BLACK (BL)
BLUE (B)
BROWN (BR)
GREEN (G)
ORANGE (O)
PINK (P)
RED (R)
WHITE (W)/(WHT)
YELLOW/GREEN (Y/G)
YELLOW (Y)/(YLW)
GRAY (GR)
PURPLE (PE)
REMOTE
CONTROLLER
ELECTRONIC CONTROLLER
(DISPLAY)
ELECTRONIC
CONTROLLER
(CONNECTOR)
CN-DISP (WHT)
CN-DISP (WHT)
1
9
91
WWWWWWWWW
CN-STM3
(WHT)
CN-STM5
(YLW)
CN-STM601
(WHT)
ELECTRONIC CONTROLLER
(DISPLAY & RECEIVER)
CN-RCV
(RED)
CN-RCV
(WHT)
15
51
WWWWW
NOISE
FILTER
CIRCUIT
DUST SENSOR
CN1 (WHT)
CN-DUST (YLW)
RECTIFICATION
CIRCUIT
COMMUNICATION
CIRCUIT
TO
OUTDOOR
UNIT
MINUS ION
GENERATOR
GND
CN2
WWW
W
BL
G
HIGH
VOLTAGE
POWER
SUPPLY
1
4
1
4
CN-CLN
(GRN)
CN1
(WHT)
15
14
CN-501
(WHT)
CN-SW
(WHT)
12
21
ELECTRONIC CONTROLLER
(EMERGENCY SWITCH)
t°
2
1
8
1
1
5
1
13
CN-TH1
(BLU)
t°
WWWWW
WWWWWWW
W
MECHA LOUVER ARM-L
(REVOLUTION)
CN-STM602
(GRN)
R
1
5
1
5
Y
BR
M
O
PE
MECHA VANE-L
(ROTATION)
CN-STM603
(BLU)
O
1
5
1
5
BR
Y
M
PE
R
L/R VANE MOTOR
CN-STM604
(YLW)
BR
1
5
1
5
R
O
M
Y
P
WWWW WW
GROUNDING
TERMINAL
24
8.2 Outdoor Unit
8.2.1 CU-VU9SKQ CU-VU12SKQ
REMARKS
BLACK: (BLK) BLUE: (BLU) WHITE: (WHT) RED: (RED) YELLOW: (YLW) GRAY: (GRY) GREEN: (GRN) BROWN: (BRW)
TERMINAL
BOARD
TO INDOOR UNIT
COMPRESSOR
FAN MOTOR
OUTDOOR AIR TEMP.
SENSOR (THERMISTOR)
PIPING TEMP.
SENSOR (THERMISTOR)
1
2
3
4
CN-TH
(WHT)
AC-WHT
(WHT)
FG1
(GRN)
FG2
(GRN)
GRN
BLK
BLK
WHT
WHT
GRN
AC-BLK
(BLK)
DATA
(RED)
RED
GRY
RAT2
(GRY)
GRY
RAT1
(GRY)
REACTOR
RED
BLU
YLW
U (RED)
FUSE103
T3.15A L250V
FUSE104
(15A 250V)
V (BLU)
W (YLW)
U
V
W
COMP. TEMPERATURE
SENSOR (THERMISTOR)
1
3
CN-TANK
(WHT)
MS
3 ~
P
N
SWITCHING POWER
SUPPLY CIRCUIT
FUSE102
T3.15A L250V
BLU
RED
YLW
FM1 (BLU)
FM2 (RED)
FM3 (YLW)
M
1~
FAN MOTOR
CIRCUIT
FUSE101
(20A 250V)
3
(RED)
2
(WHITE)
1
(BLACK)
N
L
PFC
CIRCUIT
ELECTRONIC CONTROLLER
YLW/GRN
GROUNDING
TERMINAL
SINGLE PHASE
POWER SUPPLY
NOISE FILTER
CIRCUIT
COMMUNICATION
CIRCUIT
RECTIFICATION
CIRCUIT
RECTIFICATION
CIRCUIT
YELLOW
(YLW) OR (C)
BLUE
(BLU)
OR (R)
RED
(RED)
OR (S)
TRADEMARK
COMP. TERMINAL
t°
t°
t°
Resistance of Outdoor Fan Motor Windings
Resistance of Compressor Windings
MODEL CU-VU9SKQ / CU-VU12SKQ MODEL CU-VU9SKQ / CU-VU12SKQ
CONNECTION ACXA95-00130 CONNECTION 9RS092XBA21
BLUE-YELLOW 178.6 Ω U-V 1.152 Ω
BLUE-RED 147.9 Ω U-W 1.152 Ω
V-W 1.152 Ω
Note: Resistance at 20°C of ambient temperature.
Note: Resistance at 20°C of ambient temperature.
25
8.2.2 CU-VU18SKQ
REMARKS
BLACK: (BLK) BLUE: (BLU) WHITE: (WHT) RED: (RED) YELLOW: (YLW) GRAY: (GRY) GREEN: (GRN) YELLOW/GREEN: (YLW/GRN)
FUSE104
T3.15A L250V
TERMINAL
BOARD
TO INDOOR UNIT
COMPRESSOR
OUTDOOR AIR TEMP.
SENSOR (THERMISTOR)
PIPING TEMP. SENSOR
(THERMISTOR)
1
4
AC-WHT
(WHT)
CN-MTR1
(RED)
CN-MTR2
(WHT)
IC19
Q1
FG1
(GRN)
FG2
(GRN)
GRN
BLK
WHT
WHT
GRN
AC-BLK
(BLK)
DATA
(RED)
RED
GRY
RAT2
(GRY)
GRY
RAT1
(GRY)
REACTOR
RED
BLU
YLW
U (RED)
FUSE101
T3.15A L250V
V (BLU)
W (YLW)
U
V
W
3
5
3
1
10
14
16
1
COMPRESSOR TEMP.
SENSOR (THERMISTOR)
1
3
CN-TANK
(WHT)
CN-TH1
(WHT)
P
N
SWITCHING
POWER
SUPPLY CIRCUIT
FUSE3
(20A 250V)
FUSE2
(20A 250V)
FUSE103
(20A 250V)
3
(RED)
2
(WHITE)
1
(BLACK)
COMMUNICATION
CIRCUIT
W
U
V
FAN
MOTOR
MS
3 ~
ELECTRO-MAGNETIC
COIL
(EXPANSION VALVE)
CN-STM
(WHT)
1
6
M
MS
3 ~
NOISE
FILTER
CIRCUIT
t°
t°
t°
PFC
CIRCUIT
RECTIFICATION
CIRCUIT
RECTIFICATION
CIRCUIT
BLK
NL
YLW/GRN
GROUNDING
TERMINAL
SINGLE PHASE
POWER SUPPLY
ELECTRONIC CONTROLLER
YELLOW
(YLW) OR (C)
BLUE
(BLU)
OR (R)
RED
(RED)
OR (S)
TRADEMARK
COMP. TERMINAL
Resistance of Compressor Windings
MODEL CU-VU18SKQ
CONNECTION 9RD132XCB21
U-V 1.276 Ω
U-W 1.276 Ω
V-W 1.276 Ω
Note: Resistance at 20°C of ambient temperature.
26
9. Electronic Circuit Diagram
9.1 Indoor Unit
15432
15432
INTAKE LOUVER
MOTOR
15432
15432
MECHA VANE-R
(ROTATION)
15432
15432
4321
CN-STM1
(GRN)
CN-STM4
(BLU)
ELECTRONIC CONTROLLER
(MAIN)
2
1
PIPING TEMPERATURE SENSOR (THERMISTOR)
NTC
12
SUCTION TEMPERATURE SENSOR (THERMISTOR)
2
1
NTC
12
CN-TH1
(BLU)
Sensor (Thermistor)
Characteristics
70605040302010
0
-10 0 10
Temperature (ºC)
Resistance (kΩ)
20 30 40 50
1
2
1
2
Pipe temp. Sensor
Intake Air Temp. Sensor
987654321
123456789
WWWWWWWWW
WWWWW
54321
1542
3
VOUT
VCC
GND
12345
ELECTRONIC CONTROLLER
(DISPLAY)
R307
270
5V
*R323
*CN-DISP
(WHT)
*CN-DISP
(WHT)
*CN-RMT
(WHT)
CN-RCV
(WHT)
CN-RCV
(RED)
R306
270
LED301
R324
1/8W
0
10K
E
C
NC1
5V
Dust1
Dust2
Dust1
Dust2
nanoe-G
Timer
Power
NC2
NC112345678
NC2
B
4.7k
-50V
-100mA
R305
390
Q306
GND
R303
270
R302
270
R301
270
R308
390
*R322
*R321
10K
E
C
B
4.7k
-50V
-100mA
Q305
GND
GND
5V
ELECTRONIC CONTROLLER
(RECEIVER)
R209
47
5V
*R214
*R58
*C47
*C49*C45
0.1μ
*C14
3300p
*R54
270
*R37
10k
*R64
*R210
R201
*JP201
*R211 *JP202
*SEN201
NONE
E
C
AK
IC201
LED201
white
*R212 *JP203
*R213 *JP204
C202
0.01μ
16V
C3
0.1μ
16V
C201
47μ
6.3V
5V
JR6
5V
JR7
JR9
REMOTE CONTROLLER
iCOMFORT
TEMP
TEMP
SHOWER /
DIRECT
OFF/ON
CN-STM601
(WHT)
HIGH
VOLTAGE
POWER
SUPPLY
CN1
(WHT)
432
1
432
1
*CN-CLN
(GRN)
12V
*C23
*C24
*C26
*C29
*R12
*R14
*Q01
*Q02
*R2
*R3
EC
B
*F301
32V 500mA
5V
*R10
5V
*Q04
E
C
B
CN2
GND
-6.0kV
WW
CN-501 (WHT)
CN-SW (WHT)
12
21
ELECTRONIC CONTROLLER
(EMERGENCY SWITCH)
C4
0.01μ
SW501
1
2
5V
R43
10k
R42
1k
5V
ELECTRONIC CONTROLLER
(CONNECTOR)
CN-STM3
(WHT)
8
7123456
123456789
101112
13
WWWWW
WWWWWWW
W
L/R VANE
MOTOR
CN-STM604
(YLW)
15432
IC07
IC06
107
161
152
143
12V
CN-STM5
(YLW)
CN-STM6
(WHT)
IC06
143
134
125
116
152
12V
IC03
IC05
161
152
143
134
125
116
107
161
IC07
134
125
116
107
JR3
IC05
143
152
134
125
116
107
12V
12V
*CN-TH2
(RED)
R47 1/2W
68
R46 1/2W
68
15432
15432
MECHA VANE-L
(ROTATION)
CN-STM603
(BLU)
15432
15432
MECHA LOUVER ARM-L
(REVOLUTION)
CN-STM602
(GRN)
15432
15432
12V
MECHA LOUVER ARM-R
(REVOLUTION)
R62
15k
1%
R87
1k
R88
1k
R61
20k
1%
C25
1μ
16V
C27
1μ
16V
5V
CN1 (WHT)
DUST
SENSOR
15
1234
WWWW
*R100*R99
*C62 *C63
5V5V
R97
200k
R98
200k
R106
10k
R105
1.2k
C64
1μ
10V
E
C
B
-32V
-2A
Q17
5V
CN-DUST (YLW)
O
BR
Y
PE
RBRR
O
Y
P
R
Y
BR
O
PE
O
BR
Y
PE
RBRR
O
Y
P
R
Y
BR
O
PE
W
BL
G
WWW
MINUS
ION
GENERATOR
Y/G
EVAPORATOR
FAN MOTOR
CN-FM (WHT)
Y
1
4
7
B
W
BL
R
M
FUSE301
T3.15A L250V
TEMP. FUSE
102°C (3A)
123
AC303 (WHT)
AC304 (RED)
AC306 (BLK)
G301 (GRN)
W
R
G
BL
TERMINAL
BOARD
NOISE
FILTER
CIRCUIT
RECTIFICATION
CIRCUIT
COMMUNICATION
CIRCUIT
TO
OUTDOOR
UNIT
GROUNDING
TERMINAL
*C48
*C15
5V
*R89
*R40
5V
JR8
R39
5.1k
*C38
C54
0.1μ
25V
C55
0.1μ
25V
E
C
B
27
9.2 Outdoor Unit
9.2.1 CU-VU9SKQ CU-VU12SKQ
Sensor (Thermistor)
Characteristics
70
60
50
40
30
20
10
0
-10 0 10
Temperature (
o
C)
Resistance (kΩ)
20 30 40 50
1
2
1
2
Outdoor Air Sensor
Outdoor Heat Exchanger
Sensor
Compressor Temp. Sensor
(Thermistor) Characteristics
70
60
50
40
30
20
10
0
20 40 60
Temperature (
o
C)
Resistance (kΩ)
80 100 120 140
TERMINAL
BOARD
TO INDOOR UNIT
COMPRESSOR
FAN MOTOR
AC-WHT
(WHT)
FG1
(GRN)
FG2
(GRN)
GRN
BLK
BLK
WHT
WHT
GRN
AC-BLK
(BLK)
DATA
(RED)
RED
GRY
RAT2
(GRY)
GRY
RAT1
(GRY)
REACTOR
RED
BLU
YLW
U (RED)
FUSE103
T3.15A L250V
FUSE104
(15A 250V)
V (BLU)
W (YLW)
U
V
W
MS
3 ~
P
N
SWITCHING POWER
SUPPLY CIRCUIT
FUSE102
T3.15A L250V
BLU
RED
YLW
FM1 (BLU)
FM2 (RED)
FM3 (YLW)
M
1~
FAN MOTOR
CIRCUIT
FUSE101
(20A 250V)
3
(RED)
2
(WHITE)
1
(BLACK)
N
L
PFC
CIRCUIT
ELECTRONIC CONTROLLER
YLW/GRN
GROUNDING
TERMINAL
SINGLE PHASE
POWER SUPPLY
NOISE FILTER
CIRCUIT
COMMUNICATION
CIRCUIT
RECTIFICATION
CIRCUIT
RECTIFICATION
CIRCUIT
TANK TEMP.
SENSOR (50kΩ 3950)
1
3
CN-TANK
WHITE
5V
G8
R1
4.99k
C3
1μ
10V
G8
CN-TH
WHITE
OUTDOOR TEMP.
SENSOR (15kΩ 3950)
PIPE TEMP.
SENSOR1 (4.96kΩ 3800)
5V
1
2
3
4
G8
R12
15.0k
1%
R11
15.8k
1%
C7
1μ
10V
G8
C6
1μ
10V
G8
R23
1k
1/8W
C30
0.1μ
25V
C31
0.1μ
25V
C129
0.1μ
25V
R24
1k
1/8W
C34
0.1μ
25V
G5
R27
1k
1/8W
28
9.2.2 CU-VU18SKQ
Sensor (Thermistor)
Characteristics
70
60
50
40
30
20
10
0
-10 0 10
Temperature (
o
C)
Resistance (kΩ)
20 30 40 50
1
2
1
2
Outdoor Air Sensor
Outdoor Heat Exchanger
Sensor
Compressor Temp. Sensor
(Thermistor) Characteristics
70
60
50
40
30
20
10
0
20 40 60
Temperature (
o
C)
Resistance (kΩ)
80 100 120 140
G2
13V
FUSE104
T3.15A L250V
TERMINAL
BOARD
TO INDOOR UNIT
COMPRESSOR
AC-WHT
(WHT)
CN-MTR1
(RED)
CN-MTR2
(WHT)
IC19
Q1
FG1
(GRN)
FG2
(GRN)
GRN
BLK
WHT
WHT
GRN
AC-BLK
(BLK)
DATA
(RED)
RED
GRY
RAT2
(GRY)
GRY
RAT1
(GRY)
REACTOR
RED
BLU
YLW
U (RED)
FUSE101
T3.15A L250V
V (BLU)
W (YLW)
U
V
W
3
5
1
2
3
1
10
14
16
P
N
SWITCHING
POWER
SUPPLY CIRCUIT
FUSE3
(20A 250V)
FUSE2
(20A 250V)
FUSE103
(20A 250V)
3
(RED)
2
(WHITE)
1
(BLACK)
COMMUNICATION
CIRCUIT
W
U
V
FAN
MOTOR
MS
3 ~
MS
3 ~
NOISE
FILTER
CIRCUIT
PFC
CIRCUIT
RECTIFICATION
CIRCUIT
RECTIFICATION
CIRCUIT
BLK
NL
YLW/GRN
GROUNDING
TERMINAL
SINGLE PHASE
POWER SUPPLY
ELECTRONIC CONTROLLER
TANK TEMP.
SENSOR (50kΩ 3950)
1
3
CN-TANK
WHITE
5V
G2
R1
4.99k
C5
1μ
10V
G2
CN-TH1
WHITE
OUTDOOR TEMP.
SENSOR (15kΩ 3950)
PIPE TEMP.
SENSOR1 (4.96kΩ 3800)
5V
1
2
3
4
G2
R12
15.0k
1%
R11
15.8k
1%
C10
1μ
10V
C88
220μ
10V
G2
C9
1μ
10V
G2
C63
0.1μ
25V
C64
0.1μ
25V
R43
1k
1/8W
C69
0.1μ
25V
G5
R47
1k
1/8W
R42
1k
1/8W
M
CN-STM
WHITE
6
5
4
3
2
1
D73
D74
D75
D76
C174
0.1μ
25V
G2
13V
1
2
3
4
5
6
7
16
15
14
13
12
11
10
IC4
G2
1
2
3
4
5
6
7
16
15
14
13
12
11
10
IC5
G2
ELECTRO-MAGNETIC
COIL
(EXPANSION VALVE)
*C178 *C186
*R313
5V
G5
+
G5
*RY-HT1
13V
*RY-HT2
+
9
COM
E
8
13V
G2
9
COM
E
8
13V
G2
29
10. Printed Circuit Board
10.1 Indoor Unit
10.1.1 Main Printed Circuit Board
CN-DUST
CN-STM1
CN-STM4
CN-RMT
CN-STM6
CN-DISP
CN-SW
CN-TH1
CN-FM
CN-CLN
CN-RCV
CN-STM3
CN-TH2
AC303
CN-STM5
JP1 (Random Auto Restart enable/disable)
30
10.1.2 Indicator Printed Circuit Board
CN-DISP
10.1.3 Receiver Printed Circuit Board
CN-RCV
10.1.4 Connector Printed Circuit Board
CN-STM601 CN-STM604
CN-STM602 CN-STM603
10.1.5 Switch Printed Circuit Board
SW501
CN-501
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