A : 50Hz / 1Ph / 220-240V
F : 50Hz / 3Ph / 380-415V
Model
“ ”: Cooling Only
R: Heat Pump
M5MSY_(i)Nomenclature
Product Line-Up
Indoor Unit
M5WMY-L Series/J Series
Classifi cation
M5WMY
10LRACBDDXXXXXXX
15LRACBDDXXXXXXX
10JRACLADXXXXX
15JRACLADXXXXX
HEATPUMP
20JRACLTCXXXXX
Indoor Unit
M5CKY-C Series
Nomenclature
GS01
Handset
PCB
W_2_03A
Air
Purifi cation
Saranet Filter
Bio Antibody Filter
Classifi cation
Marking
Titanium Apatite
Filter
CE
Others
Auto Restart
Handset
M5CKY
Nomenclature
GS01
10CRACOAXXX
15CRACOAXXX
20CRACOAXXX
HEATPUMP
PLCKYCRNGS01XXX
PCB
C_2_01A_M
Air
Purifi cation
Saranet Filter
Negative Ionizer
Nano Technology Air
Filtration
CE
Marking
Others
Auto Restart
2
Nomenclature M5MSY_(i)
Indoor Unit
M5CCY-C Series
Classifi cation
M5CCY
10CRACPAXXXXX
15CRACPAXXXXX
HEAT-
PUMP
20CRACPAXXXXX
Indoor Unit
M5CMY-E Series
Nomenclature
Netware 3C
Handset
Handset
PCB
C_2_01A_M
PCB
Air
Purifi cation
Saranet Filter
Negative Ionizer
Classifi cation
Air
Purifi cation
Nano Technology Air
Filtration
CE
Marking
Marking
Others
Auto Restart
Others
M5CMY
Nomenclature
GS01
15ERACAAXXXXX
20ERACAAXXXXX
HEAT-
PUMP
C_2_01A_M
Saranet Filter
Negative Ionizer
Nano Technology Air
Filtration
CE
Auto Restart
3
M5MSY_(i) Nomenclature
Outdoor Unit
M5MSY-BR
Classifi cation
Refrigerant
M5MSY
18BRACDOA
20BRACDOA
25BRACDOA
30BRACDOA
HEATPUMP
Nomenclature
Cap Tube
Control
EXV
XXXXX
XXXXX
XXXXX
XXXXX
Fin
Gold coated
Blue coated
Bare
ContactorHPLP
Safety
Devices
Compressor
DC Inverter SwingCEDrain Elbow
Marking
Others
* Remark : M5MSY18BR is not recommended to couple with M5WMY10/15 JR (for Wall Mounted series).
M5MSY18BR is recommended to couple with M5WMY10/15 LR (for Wall Mounted series).
4
Application Information M5MSY_(i)
Application Information
Operating Range
Ensure the operating temperature is in allowable range.
Heatpump - M5MSY20/25/30BR
Heating
18
10
Outdoor temp. (°CWB)
-16
1520
Indoor temp. (°CDB)
Heatpump - M5MSY18BR
Heating
18
27
Standard
point
Cooling
46
43
Outdoor temp. (°CDB)
0
122319
Indoor temp. (°CWB)
Cooling
10
Outdoor temp. (°CWB)
-16
1520
Indoor temp. (°CDB)
27
Indoor temp. (°CWB)
Caution :
The use of your air conditioner
outside the range of working
temperature and humidity can result
in serious failure
.
5
M5MSY_(i) Application Information
Refrigerant Circuit Diagrams
Model: M5MSY18BR
M5MSY20BR
Model: M5MSY25BR
M5MSY30BR
6
Application Information M5MSY_(i)
Installation Guideline
Installation of Outdoor Unit
• The outdoor unit must be installed in such a way, so as to prevent short circuit of the hot discharged air or
obstruction to the smooth air fl ow. Please follow the installation clearance shown in the fi gures below. Select
the coolest possible place where intake air temperature is not greater than the outside air temperature
(maximum 45°C/113°F)
• Where a wall or other obstacle is in the path of outdoor unit’s intake or exhaust airfl ow, follow the installation
guidelines below.
• For any of the below installation patterns, the wall height on the exhaust side should be 1200mm or less.
Wall facing two sidesWall facing one side
More than 100
Side View
More than 350
1200
or less
More than 50
More
than 100
More than 350
More than 50
Top Vie w
Wall facing three sides
More than 100
More than 50
More than 350
Top View
Unit : mm
• Before installing the piping and connecting cord, please remove the access panel and plastic valve cover for
easy access. Refer to fi gures shown below.
PLEASE REMOVE
ACCESS PANEL &
PLASTIC VALVE
COVER WHEN
CONNECTING
THE PIPING AND
CONNECTING
CORD.
PUSH & PULL UP
• There are 2 holes on the base of Outdoor Unit for
condensed water to fl ow out. Insert the drain elbow
to one of the holes.
• To install the drain elbow, fi rst insert one portion
of the hook to the base (portion A), then pull the
drain elbow in the direction shown by the arrow
while inserting the other portion to the base. After
installation, check to ensure that the drain elbow
clings to base fi rmly.
• If the unit is installed in a snowy and chilly area,
condensed water may freeze in the base. In such
case, please remove plug at the bottom of unit to
smooth the drainage.
7
BASE
Plug
A
DRAIN
ELBOW
DRAIN
ELBOW
M5MSY_(i) Application Information
Installation Diagram
Wall Mounted
Indoor Unit
Cut thermal insulation
pipe to an appropriate
length and wrap it with
tape, making sure that no
gap is left in the insulation
pipe's cut line.
Wrap the insulation pipe with
the finishing tape from bottom
to top.
Front panel
50mm or more from walls
(on both sides)
30mm or more from ceiling
Caulk pipe
hole gap
with putty.
Air filter
Air-Purifying Filter with
bacteriostatic virustatic function (2)
Air-Purifying Filter with
bacteriostatic virustatic
function
Filter frame
Tab
Air filter
Outdoor Unit
M4 x 12L
Opening service lid
Service lid
Service lid is opening/closing
type.
Opening method
1) Remove the service lid
screws.
2) Pull out the service lid
diagonally down in
the direction of the arrow.
1) Pull down.
250mm from wall
Caution
Before installing the unit, ensure that the power supply matches the power requirement of the air conditioner.s
Installation of Indoor Unit
Service Space
Install the indoor unit at a location with the following requirements
• Location is suitable for wiring, piping and drainage.
• No obstruction of air fl ow into and out of unit where cooler air can be evenly distributed.
• Ensure that air discharge is not short circuited with air intake.
• Ensure that wall is suffi ciently strong, rigid, fl at, perpendicular and vibration free.
• Where air fi lter cassette can be slided in or out easily.
• Where there is no danger of fl ammable gases.
• Where there is no direct sunlight on unit.
Air flow
(Indoor)
min. 50
(Space for
maintenance)
Required space
min. 50
(Space for
maintenance)
rofecapS(
03.nim
)ecnamrofrep
8
Application Information M5MSY_(i)
Ceiling Cassette
Front Panel
Air Filter
(behind the grille)
Air Discharge Louver
Drain Piping
Thermal Insulation
Wrap the insulated pipe with the
finishing tape from bottom to top
Air Intake Grille
Preliminary Site Survey
• Electrical supply and installation is to confi rm to local authority’s (e.g. National Electrical Board) codes and
regulations.
• Voltage supply fl uctuation must not exceed ± 10% of rated voltage. Electricity supply lines must be
independent of welding transformers which can cause high supply fl uctuation.
• Ensure that the location is convenient for wiring, piping and drainage.
• The indoor unit must be installed in such that free from any obstacles in path of cool air discharge and
warm air return, and must allow spreading or air throughout the room (near the centre of the room).
• Clearance must be provided for the indoor unit from the wall and obstacles as shown in the fi gure.
Beam
Min 0.5 mMin 0.5 m
Min 1.0 m
Obstacles
Max 3.0 m
Floor
• The installation place must be strong enough to support a load of 4 times the indoor unit weight to avoid
amplifying noise and vibration.
• The installation place (handling ceiling surface) must be level and the height in the ceiling is 350mm or
more.
Min 0.5 m
Max 3.0 m
9
M5MSY_(i)Application Information
Unit Installation
15.0
38.0
505.0
32.0
580.0 ~ 610mm (CEILING OPENING MEASUREMENT)
538.0
18.0
)TNEMERUSAEMGNINEPOGNILIEC(mm016~0.085
88.0448.0
19.0529.0
M5CKY-C
• The indoor unit must be away from heat and steam sources (avoid installing it near an entrance).
• Measure and mark the position for the hanging rod. Drill the hole for the angle nut on the ceiling and fi x
the hanging rod.
• The installation template is extended according to temperature and humidity. Check on dimensions in
using.
• The dimensions of the installation template are same as those of the ceiling opening dimensions.
• Before ceiling laminating work is completed, be sure to fi t the installation template to the indoor unit.
Note: Be sure to discuss the ceiling drilling work with the installers concerned.
Unit Hanging
Indo or U nit
Ceiling
Bo
ard
30.0mm
M5CKY-C/E
• Confi rm the pitch of the hanging rod is 770mm x 622mm sharp (M5CKY-E)
• Hold the unit and hand it on the hanging rod with the nut and washer.
• Adjust the unit height to 35.0mm between the indoor unit bottom surface and the ceiling surface.
• Confi rm with a level gauge that the unit is installed horizontally and tighten the nut and bol to prevent unit
falling and vibration.
Open the ceiling board along the outer edge of the paper installation template.
•
10
Application Information M5MSY_(i)
Ceiling Concealed
Hanger
Return duct
Supply duct
Wrap the insulated pipe with the
finishing tape from bottom to top
Ceiling
Drain
piping
Thermal insulation
Preliminary Survey
• Electrical supply and installation is to confi rm to local authority’s (e.g. National Electrical Board) codes and
regulations.
• Voltage supply fl uctuation must not exceed ± 10% of rated voltage. Electricity supply lines must be
independent of welding transformers which can cause high supply fl uctuation.
• Ensure that the location is convenient for wiring, piping and drainage.
• The indoor unit must be installed in such that free from any obstacles in path of cool air discharge and
warm air return, and must allow spreading or air throughout the room (near the centre of the room).
• Clearance must be provided for the indoor unit from the wall and obstacles as shown in the fi gure.
• Use the hanger supplied with the unit.
• Ensure the support is strong enough to withstand the weight of the unit.
• Use the supplied drain socket to connect the drain pipe
11
Install the unit in such a way that
the condensate water can flow
out smoothly.
M5MSY_(i) Application Information
The diagrams below show the screws position for duct work connection.
12
Application Information M5MSY_(i)
Ceiling Convertible
Preliminary Site Survey
• Electrical supply and installation is to confi rm to local authority’s (e.g. National Electrical Board) codes and
regulations.
• Voltage supply fl uctuation must not exceed ± 10% of rated voltage. Electricity supply lines must be
independent of welding transformers which can cause high supply fl uctuation.
• Ensure that the location is convenient for wiring, piping and drainage.
Standard Mounting
Ensure that the overhead supports are strong enough to hold the weight of the unit. Position the hanger rods
(wall mounting bracket for fl oor standing), and check for its alignment with the unit as shown in Fig. below.
Also,check that the hangers are secured and the base of the fan coil unit is leveled in both horizontal
directions, taking into account the gradient for drainage fl ow as recommended under section Piping and
Drain Hose Installation.
13
M5MSY_(i)Application Information
Please ensure that the following steps are taken:
• Check the gradient for drainage fl ow as recommended in Figure A.
• Provide clearance for easy servicing and optimal air fl ow as shown in Figure B.
• The indoor unit must be installed such that there is no short circuit of the cool discharge air with the warm
return air.
• Do not install the indoor unit where there is direct sunlight shining on the unit. The location should be suitable for piping and drainage installation. The unit must be a large distance away from the door.
Fig.A
Under ceiling type
Floor standing type
Fig.B
14
Application Information M5MSY_(i)
Under Ceiling Installation
Install the Suspension Bolts
1. Install the suspension bolts so that it can support the indoor unit.
2. Adjust the distance to ceiling before installation.
3. Refer to the dimension given to install the unit.
Install the Indoor Unit
1. Insert the suspension bolts into the fi ttings of the hanger bracket.
2. Set the nuts and washer on the both side of the metal fi ttings.
3. Secure it with nuts.
4. Attach the hanger cover (4 pcs) to the units.
15
M5MSY_(i) Application Information
Floor Standing Installation
1. Refer to the dimension as illustrated when installing the mounting bracket.
2. Determine the pipe hose position using the rear piping hole. Drill the pipe hole at the slight downward
slant to the outdoor side.
MOUNTING BRACKET
HOCK THE UNIT ON THE
MOUNTING BRACKET
WALL
16
Application Information M5MSY_(i)
REFRIGERANT PIPING
Piping Length & Elevation
If the pipe is too long, both capacity and reliability of the unit will drop. As the number of bends increases,
resistance to the fl ow of refrigerant system increases, thus lowering cooling capacity. As a result, the
compressor may become defective. Always choose the shortest path and not exceed the maximum piping
length as tabulated below.
Single Indoor
Maximum
Piping
Length(m)
Maximum
height
Difference(m)
Pre-charged
Total Piping
length (m)
Outdoor Unit
Pre-charged
(kg)
1.220
L ≤ 25H ≤ 15302.620
4
L ≤ 25H ≤ 15302.620
Amount of
Additional
Charge (g/m)
Model
M5MSY18BR
(2 Ports)
M5MSY20BR
(2 Ports)
M5MSY25BR
(3 Ports)
M5MSY30BR
(4 Ports)
Maximum
Total Piping
Length (m)
L
+ L2 ≤ 30L ≤ 20H ≤ 1515
1
L1+ L2 ≤ 50L ≤ 25H ≤ 15302.020
L
+ L2+ L3 ≤
1
60
L
+ L2+ L3+ L
1
≤ 60
VERTICAL HEIGHT
DIFFERENCE MAX. H
INDOOR UNIT
OUTDOOR UNIT
* Remark : Applicable for Wall Mounted, Ceiling Cassette, Ceiling Concealed, Ceiling Convertible unit.
17
M5MSY_(i) Application Information
Piping Connection To The Units
• The outdoor unit is equipped with two to four sets of fl are joints depending on O/D unit model. Refer to the
table below for fl are joint size and location.
ModelPipeABCD
M5MSY18BR
M5MSY20BR
M5MSY25BR
M5MSY30BR
18
ELECTRICAL WIRING CONNECTION
IMPORTANT: The fi gures shown in the table are for information purpose only. They should be checked and
selected to comply with the local/national codes of regulations. This is also to the type of
installation and conductors used.
Liquid1/4”1/4”--
Gas3/8”3/8”--
Liquid1/4”1/4”--
Gas1/2”1/2”--
Liquid1/4”1/4”1/4”-
Gas3/8”1/2”1/2”-
Liquid1/4”1/4”1/4”1/4”
Gas3/8”3/8”1/2”1/2”
Indoor Unit AIndoor Unit BIndoor Unit CIndoor Unit D
12 SIG NL
SIGNLNLNLNLNL
0
There must be a double pole switch with a minimum 3 mm contact gap and fuse/ circuit breaker as
SIG
12 SIG NL12 SIG NL
SIGSIG
12 SIG NL
DCBA
Power
Supply
Power Supply
recommended in the fi xed installation circuit.
• All wiring must be connected accordingly to the diagram
above, with reference to the piping connection. Mismatch
any wiring with different piping will cause severe damage
to the system.
• All wires must be fi rmly connected.
• All wires must not touch the refrigerant piping, compressor
or any moving parts of the fan motor.
• The connecting wires between the indoor unit and the
outdoor unit must be clamped on the wire clamps and the
cable tie (push releasable) at the indoor unit and outdoor
unit respectively as shown in the fi gures.
• The power supply cord must be equivalent to H07RN-F
(245IEC57) or higher.
• Remove the detachable part of the access cover to allow
wire routing.
• All wires must not be clamped by the access panel cover.
Detachable part
Wires
mustn't be
clamped
Wire Clamp
Interconnection
Cable
18
Application Information M5MSY_(i)
* The fi gures shown in the table are for information purpose only. They should be checked and selected
to comply with the local/national codes of regulations. This is also subject to the type of installation and
conductors used.
** The appropriate voltage range should be checked with label data on the unit.
ModelM5WMY10 LRM5WMY15 LR
Voltage Range**
Power supply cable size* mm
2
Number of core
Interconnection cable size* mm
2
Number of core
Recommended time delay fuse* A 25 25
ModelM5WMY10/15 JR M5WMY20 JR
Voltage Range**
Power supply cable size* mm
2
Number of core
Interconnection cable size* mm
2
Number of core
Recommended time delay fuse* A 25 25
220V - 240V / 1Ph / 50Hz+
3.0
3.0
3
1.5
1.5
4
220V - 240V / 1Ph / 50Hz+
3.0
3.0
3
1.5
2.5
4
3
4
3
4
ModelM5CKY10 C/CRM5CKY15 C/CRM5CKY20 C/CR
Voltage Range**
Power supply cable size* mm
Number of conductors
Interconnection cable size* mm
Number of conductors
2
3.0
3
2
1.5
4
220V - 240V / 1Ph / 50Hz+
3.0
3
1.5
4
3.0
3
2.5
4
Recommended time delay fuse* A 25 25 25
ModelM5CCY10 C/CRM5CCY15 C/CRM5CCY20 C/CR
Voltage Range**
Power supply cable size* mm
Number of conductors
Interconnection cable size* mm
Number of conductors
2
3.0
3
2
1.5
4
220V - 240V / 1Ph / 50Hz+
3.0
3
1.5
4
3.0
3
2.5
4
Recommended time delay fuse* A 25 25 25
ModelM5CMY15 E/ERM5CMY20 E/ER
Voltage Range**
Power supply cable size* mm
Number of conductors
Interconnection cable size* mm
Number of conductors
2
2
220V - 240V / 1Ph / 50Hz+
3.0
3.0
3
1.5
2.5
4
3
4
Recommended time delay fuse* A 25 25
19
M5MSY_(i) Engineering & Physical Data
Engineering & Physical Data
Engineering Data - M5MSY - B Series (R410A model)
MODEL
NOMINAL COOLING CAPACITY
NOMINAL HEATING CAPACITY
NOMINAL TOTAL INPUT POWER (COOLING)W
NOMINAL TOTAL INPUT POWER (HEATING)W
NOMINAL RUNNING CURRENT (COOLING)A
NOMINAL RUNNING CURRENT (HEATING)A
EERW/W
COPW/W
REFRIGERANT CHARGEkg
POWER SOURCEV/Ph/Hz220 - 240 / 1 / 50
REFRIGERANT TYPE
AIR FLOWl/s / CFM512/1076780 / 1638850 / 1786
SOUND PRESSURE LEVELdBA474849
UNIT DIMENSIONHEIGHT X WIDTH X DEPTHmm550 x 765 x 285756 x 855 x 328
PACKING DIMENSION HEIGHT X WIDTH X DEPTHmm610 x 895 x 360793 x 990 x 415
UNIT DIMENSIONHEIGHT X WIDTH X DEPTHmm218 x 1080 x 630
PACKING DIMENSION HEIGHT X WIDTH X DEPTHmm297 x 1197 x 740
UNIT WEIGHTkg2527
CONDENSATE DRAIN SIZEmm19.1
FAN
INDOOR UNIT
FAN MOTOR
COIL
AIR QUALITY FILTER
CASINGCOLOURLIGHT GREY
DRAWING NUMBER0453103CU150453103CU15
AIR DISCHARGE
OPERATIONWIRELESS OR WIRED REMOTE CONTROL
HIGH l/s / CFM240 / 508245 / 520
MEDIUMl/s / CFM182 / 386217 / 460
LOWl/s / CFM165 / 350192 / 406
TYPESIROCCO
DRIVEDIRECT
TYPEINDUCTION
INDEX OF PROTECTION (IP)-IP20
INSULATION GRADEB
RATED INPUT POWERW83.6101
RATED RUNNING CURRENTA0.370.46
MOTOR OUTPUTW4050
POLES4
TUBE
FIN
MATERIALSEAMLESS INNER GROOVE COPPER
DIAMETERmm7.00
MATERIAL
FACE AREAm
ROW2
TYPEWASHABLE SARANET FILTER
QUANTITYpc2
2
AUTOMATIC LOUVER
(UP & DOWN)
ALUMINIUM
(HYDROPHILIC FIN)
0.27
1) ALL UNITS ARE BEING TESTED AND COMPLY TO ISO 5151 (NON-DUCTED UNIT) OR ISO 13253 (DUCTED UNIT).
2) ALL SPECIFICATIONS ARE SUBJECTED TO CHANGE BY THE MANUFACTURER WITHOUT PRIOR NOTICE.
COOLINGHEATING
INDOOR: 27°C DB / 19°C WBINDOOR: 20°C DB
OUTDOOR: 35°C DB / 24°C WBOUTDOOR: 8°C DB / 6°C WB
25
M5MSY_(i) Performance Data
Performance Data
Model: M5MSY18BR
Cooling Mode
Combination of indoor unit *
102.50---2.503.006208204.032.903.80
153.50---3.504.00108014103.244.906.50
10 + 101.951.953.904.30103012403.794.735.70
10 + 151.672.334.004.50105014003.814.826.33
* Applicable for indoor size 15 using Ø9.52mm gas pipe
Heating Mode
Combination of indoor unit *
103.00---3.003.7085012703.533.905.90
153.80---3.804.40129017302.955.907.90
10 + 102.182.184.364.70104012004.204.735.40
10 + 151.942.464.405.10104014504.234.766.50
* Applicable for indoor size 15 using Ø9.52mm gas pipe
Note : It is not recommended to connect the multi-split outdoor to single indoor only.
Each capacity (kW)Total capacity (kW) Total input (W)EERTotal current (A)
A roomB roomRatedMaxRatedMaxRatedRatedMax
Each capacity (kW)Total capacity (kW) Total input (W)COPTotal current (A)
A roomB roomRatedMaxRatedMaxRatedRatedMax
Model: M5MSY20BR
Cooling Mode
Combination of indoor unit *
102.50---2.503.006208004.032.803.60
153.50---3.503.7098012803.574.305.60
20---5.005.005.80162021003.097.109.20
10 + 102.502.505.005.80147019103.406.408.40
10 + 152.132.975.106.00155021403.296.909.40
10 + 201.753.455.206.00150020703.476.609.10
15 + 152.552.555.106.00140021403.646.209.40
15 + 202.223.185.406.20137817203.926.107.60
* Applicable for indoor size 15 using Ø9.52mm gas pipe
Each capacity (kW)Total capacity (kW) Total input (W)EERTotal current (A)
A roomB roomRatedMaxRatedMaxRatedRatedMax
Cooling Mode
Combination of indoor unit *
10 + 152.173.035.206.00155021403.356.909.40
15 + 152.602.605.206.00140021403.716.209.40
15 + 202.223.185.406.20137817203.926.107.60
* Applicable for indoor size 15 using Ø12.70mm gas pipe
Note : It is not recommended to connect the multi-split outdoor to single indoor only.
Each capacity (kW)Total capacity (kW) Total input (W)EERTotal current (A)
A roomB roomRatedMaxRatedMaxRatedRatedMax
Heating Mode
Combination of indoor unit *
103.00---3.004.00100012603.004.505.60
153.80---3.804.50125016803.045.607.50
20---5.605.606.50185025103.038.2011.00
10 + 103.003.006.006.50157021503.826.909.50
10 + 152.543.566.106.50164020003.727.208.80
10 + 202.034.076.106.70160018003.817.007.90
15 + 153.053.056.106.50160019703.817.008.70
15 + 202.643.766.406.90149216804.296.607.50
* Applicable for indoor size 15 using Ø9.52mm and Ø12.70mm gas pipe
Note : It is not recommended to connect the multi-split outdoor to single indoor only.
Each capacity (kW)Total capacity (kW) Total input (W)COPTotal current (A)
* Applicable for indoor size 15 using Ø9.52mm and Ø12.70mm gas pipe
Note : It is not recommended to connect the multi-split outdoor to single indoor only.
Each capacity (kW)Total capacity (kW) Total input (W)COPTotal current (A)
* Applicable for indoor size 15 using Ø9.52mm and Ø12.70mm gas pipe
Note : It is not recommended to connect the multi-split outdoor to single indoor only.
Each capacity (kW)Total capacity (kW) Total input (W)COPTotal current (A)
A room B room C room D roomRatedMaxRatedMaxRatedRatedMax
28
Outline and Dimension M5MSY_(i)
Outline and Dimension
Outdoor Unit
Model: M5MSY18BR
Outdoor Unit
Model: M5MSY20/25/30BR
Note: Dimension in mm
29
DimensionABCDEFGHIJKL
mm940348756855392733603328303370362271
DimensionMNOPQRSTUVWX
mm4481908058180323912632152344
Note: Dimension in mm
M5MSY_(i)Outline and Dimension
Indoor Unit
Model: M5WMY 10/15LR
800
206
288
Indoor Unit
Model: M5WMY 10/15JR
288
Note: Dimension in mm
800
206
288
288
Note: Dimension in mm
30
Outline and Dimension M5MSY_(i)
Indoor Unit
Model: M5WMY 20/25JR
1065
224
310
Indoor Unit
Model: M5CKY 10/15/20CR
A
310
Note: Dimension in mm
31
MODELABCDEFGHIJK
M5CKY 10/15/20CR57057029527520640640408408364364
Note: Dimension in mm
M5MSY_(i) Outline and Dimension
Indoor Unit
Model: M5CKY 20/25ER
B
A
MODELABCDEFGHIJK
M5CKY 20/25ER82082035029060990990627627607607
C
D
E
F
H
I
J
G
K
Note: Dimension in mm
Indoor Unit
Model: M5CCY 10/15/20/25CR
MODEL
M5CCY 10/15CR
M5CCY 20CR
M5CCY 25CR
ABCDEFGH I JKLMNO
318818428021090572261411351225211232212,8114
311041100296210106572261411351225211232212,8114
3111761137109710120072261411351225211232212,8114
Note: Dimension in mm
32
Outline and Dimension M5MSY_(i)
Indoor Unit
Model: M5CMY 15/20/25ER
Note: Dimension in mm
33
M5MSY_(i) Wiring Diagram
Wiring Diagram
Outdoor Unit
Model: M5MSY18BR
Outdoor Unit
Model: M5MSY20BR
LED AService monitor LED (green)SW3Wiring error check switch
LED1 - LED4Service monitor LED (red)SW4Priority room setting switch
• Disconnect from main supply before servicing the air conditioner.
• The unit is designed to give long life operation with minimum maintenance required. However, it should be regularly
checked and the following items should be given due attention.
ComponentsMaintenance ProceduresPeriod
Air Filter
(Indoor Unit)
Indoor Unit1. Clean any dirt or dust on the grille or panel by wiping it with a
Condense Drain
Pan & Pipe
Indoor FanCheck if there is any abnormal noise.If necessary.
Indoor / Outdoor
Coil
Power Supply1. Check the running current and voltage for indoor and outdoor
CompressorNo maintenance needed if refrigerant circuit remains sealed. How-
1. Remove any dust adhering to the fi lter by using a vacuum cleaner
or wash in lukewarm water (below 40˚C) with a neutral cleaning
detergent.
2. Rinse the fi lter well and dry before placing it back onto the unit.
At least once every 2
weeks.
More frequently if
necessary.
3. Note: Never use gasoline, volatile substances or chemicals to
clean the fi lter.
At least once every 2
soft cloth soaked in lukewarm water (below 40˚C) and a neutral
detergent solution.
2. Note: Never use gasoline, volatile substances or chemicals to
weeks.
More frequently if
necessary.
clean the indoor unit.
1. Check the cleanliness and clean it if necessary.
Every 3 months.
2. Check the condensate water fl ow.
1. Check and remove the dirt between the fi ns.
Every month.
2. Check and remove any obstacles which hinder air fl ow through
the indoor or outdoor.
3. Note: Avoid direct contact of any coil treatment material on the
plastic part. This may cause plastic part to deform as a result of
chemical reaction.
Every 2 months.
unit.
2. Check the electrical wiring and tighten the wire onto the terminal
Every year.
block if necessary.
Every 6 months.
ever, check for refrigerant leak at joint and fi tting.
Indoor Models
1. Open the front panel
• Hold the panel at the recesses on the main unit
(2 recesses on right and left sides) and lift it until
it stops.
2. Remove the front panel
• While lifting the front panel further, slide it to the
right and pull it to the front side. The left rotating
shaft is detached. Slide the right rotating shaft to
the left and pull it to the front side to remove it.
3. Attach the front panel
• Align the right and left rotating shafts of the front
panel with the grooves and push them all the
way in.
• Gently close the front panel. (Push both ends
and the center on the front panel.)
Rotating
shaft
Recess on
main unit
40
Service and Maintenance M5MSY_(i)
Air Filter
1. Open the front panel.
• Hold the panel at the recesses on the main unit (2 recesses on right and left sides) and lift it until it
stops.
Recess on
main unit
2. Pull out the air fi lters.
• Push a little upwards the tab at the center of each air fi lter, then pull it down.
3. Clean or replace each fi lter.
• When shaking off remaining water, do not wring the fi lter.
4. Set the air fi lter and close the front panel.
• Insert claws of the fi lters into slots of the front panel. Close the front panel slowly and push the panel at
the 3 points. (1 on each side and 1 in the middle.)
• The air fi lter have a symmetrical form in the horizontal direction.
FRONT
Caution
• Don’t touch the metal parts of the indoor unit. It may cause an injury.
• When removing or attaching the front panel, use a robust and stable stool and watch your steps carefully.
• When removing or attaching the front panel, support the panel securely with hand to prevent from it falling.
• For cleansing, do no use hot water above 40°C, benzene, gasoline, thinner, nor other volatile oils, polishing
compound, scrubbing brushes, nor other hand stuff.
• After cleaning, make sure that the front panel is securely fi xed.
Pre Start Up Maintenance
(After Extended Shutdown)
• Inspect thoroughly and clean indoor and outdoor units.
• Clean or replace air fi lters.
• Clean condensates drain line.
• Clean clogged indoor and outdoor coils.
• Check fan imbalance before operation.
• Tighten all wiring connections and panels.
• Check for refrigerant leakage.
Outdoor Models
The design of the M5MSY outdoor series allows servicing to be carried out easily. The removal of the top, front
and side panels makes almost every part accessible.
Under normal circumstances, these outdoor units only require a check and cleaning of air intake coil surface
once every 3 months. However, if a unit is installed in areas subjected to much oil mist and dust, the coils must
be regularly cleaned by qualifi ed Air Conditioner Service Technicians to ensure suffi cient heat exchange and
proper operation. Otherwise, the systems life span may be shortened.
Caution
• Do not charge OXYGEN, ACETYLENE OR OTHER FLAMMABLE and poisonous gases into the unit when
performing a leakage test or an airtight test. These gases could cause severe explosion and damage if exposed to
high temperature and pressure.
• It is recommended that only nitrogen or refrigerant be charged when performing the leakage or airtight test.
41
M5MSY_(i)Troubleshooting
Troubleshooting
Fault Condition
When a malfunction of the air conditioner unit is detected, immediately switch off the main power supply before
proceeding with the following troubleshooting procedures.
The following are common fault conditions and simple troubleshooting tips. If any other fault conditions which
are not listed occur, contact your nearest local dealer. DO NOT attempt to troubleshoot the unit by yourself.
3Discharge airfl ow has bad odor.• Cigarettes, smoke particles, perfume and
4Condensation on the front air grille of the indoor
unit.
5Water fl owing out from the air conditioner.• Switch off the unit and contact your nearest
6Hissing airfl ow sound from the air conditioner
unit during operation.
7The wireless controller display is dim.• The batteries are discharged.
8Compressor operates continuously.• Dirty air fi lter. Clean the air fi lter.
9No cool air comes out during cooling cycle, or
no hot air comes out during heating cycle.
10On heating cycle, warm air does not come out.• Unit is in defrost mode. Heating operation will
• The auto restart function is not functioning.
Please turn on the unit with the wireless /
wired controller.
• The air fi lter is dirty.
• The doors and windows are opened.
• The air suction and discharge of both indoor
and outdoor units are clogged or blocked.
• The regulated temperature or temperature
setting is not low enough.
others, which might have adhered onto the
coil, may cause odor.
• Contact your nearest dealer.
• This is caused by air humidity after an
extended period of operation.
• The set temperature is too low. Increase the
temperature setting and operate the unit at
high fan speed.
dealer. This might be due to tilted installation.
• Liquid refrigerant fl owing into the evaporator
coil.
• The batteries are not correctly inserted.
• The assembly is not good.
• Temperature setting too low (cooling). Use
higher temperature setting.
• Temperature setting too high (heating). Use
lower temperature setting.
• Temperature setting too high (cooling). Use
lower temperature setting.
• Temperature setting too low (heating). Use
higher temperature setting.
resume after defrost cycle ends.
42
Troubleshooting M5MSY_(i)
Indicator Lights
IR Signal Receiver
When an infrared remote control operating signal has been transmitted, the signal receiver on the indoor unit
will respond as below to confi rm acceptance of the signal transmission.
ON to OFF1 Long Beep
OFF to ON
Pump down/Cool force on
2 Short Beep
Others1 Short Beep
Heat Pump Unit
The table shows the LED indicator lights for the air conditioner unit under normal operation and fault conditions.
The LED indicator lights are located at the side of the air conditioner unit.The heat pump units are equipped
with an “auto” mode sensor whereby it will provide reasonable room temperature by switching automatically to
either “cool” or “heat” mode according to the temperature set by the user.
Model
5WMY 10/15 LR
5WMY 10/15/20 JR
5CKY 10/15/20 CR
5CMY 20ER
5CCY 20CR
ON/OFF
IR Receiver
Cool / Heat
Timer
Sleep
ON/OFF switch
LED Indicator Lights: Normal Operation and Fault Conditions for Heat Pump Unit
(RED)
1
COOL/HEAT
(GREEN/RED)
Green
Red
Red
Green
(ORANGE)
Normal Operation / Fault Indication
Cool mode
Heat mode
Auto mode in Heating operation
Auto mode in Cooling operation
Time off (when unit is on)
Time on (when unit is off)
Sleep mode on
Green
Green
Fan mode on
Dry mode on
43
Red
Green
ON Blinking
Defrost operation
Error indication
M5MSY_(i) Troubleshooting
Error Code Diagnosis by Wireless Handset GS01
TURBOQUIET
ON TIMER CANCEL
SLEEP
ONOFF
CANCEL
TIMER
CLOCK
MODE
CANCEL
OFF TIMER CANCEL
Diagnosis Step
1. Hold down ON TIMER CANCEL button or OFF TIMER CANCEL button for 5 seconds, a “” indication
fl ashes on the temperature display section.
2. Press ON TIMER CANCEL or OFF TIMER CANCEL repeatedly until indoor buzzer produces a long beep.
This indicates the error code, refers to Error Codes table and is displayed on the temperature display
section.
3. A short beep or two consecutive beeps indicate non-corresponding error codes.
4. To cancel the error code display, hold down ON TIMER CANCEL or OFF TIMER CANCEL button for 5
seconds. Alternatively, the code display will cancel itself if the button is not pressed for 1 minute.
Error Code Diagnosis by Wired Handset Netware 3C
44
Troubleshooting M5MSY_(i)
Error Codes
Error
Codes
U0Insuffi cient gas
U2DC voltage out of range
U4Communication error
U7
UAInstallation error
UF
UHAnti-freeze function in other room
A1Indoor PCB error
A3Water pump error
A5Antifreeze
A6Indoor fan motor abnormal
C4
C9Indoor room thermistor short/open
E1Outdoor PCB error
Error DescriptionAction
0Normal No action.
1. Check sensor connection.
2. Check stop valve.
3. Check for gas leak.
4. Check the EXV.
5. Check H8.
1. Check the supply voltage.
2. Check the outdoor fan by rotating with hand.
3. Restart the system.
4. Check power supply waveform.
1. Check the indoor unit - outdoor unit connection wires.
2. Check the voltage of the signal terminal.
3. Check the indoor fan by rotating with hand.
4. Check the power supply waveform.
Signal transmission error (on outdoor unit PCB)
Communication Error (indoor and
outdoor) piping and wiring
Indoor heat exchanger
thermistor short/ open
1. Restart the system.
2. Replace outdoor PCB.
3. Long term monitor on external factor.
1. Check the indoor and outdoor unit model name.
2. Check the part code on the indoor and outdoor PCB.
1. Check the wiring and piping between indoor and outdoor units.
2. Check refrigerant level.
3. Check refrigerant line on blockage.
1. Check which indoor having error A5.
2. Check the supply voltage.
3. Check the indoor and outdoor model name.
1. Check connector connection.
2. Replace indoor PCB.
1. Check for short circuit.
2. Check connection on drain pump.
3. Restart the system.
4. Check the drain water level.
5. Check fl oat switch connection.
1. Check the air passage.
2. Check the intake air fi lter.
3. Check dust accumulation on indoor coil.
4. Check wiring and piping.
5. Check the EXV.
6. Check indoor coil sensor resistance value.
7. Check refrigerant level.
8. Check room sensor resistance value.
1. Check the indoor fan by rotating with hand.
2. Replace indoor fan motor if not rotating smoothly.
3. Check fan motor voltage.
4. Replace indoor PCB if not at the rated voltage.
5. Check fan capacitor's conductivity (AC Motor).
6. Replace fan capacitor if there's conductivity.
1. Check the connector connection.
2. Check the sensor resistance value.
1. Restart the system.
2. Replace outdoor PCB.
3. Check to see that the unit is grounded.
4. Check power supply waveform.
45
M5MSY_(i)Troubleshooting
Error
Codes
E3High pressure protection
E4Low pressure protection
E5Compressor motor lock/overload
E6Compressor lock/start-up error
E7Outdoor DC fan motor lock
E8Ac input over current
E9EXV error
EA4-way valve error
F3Discharge pipe overheat
F6Heat exchanger overheat
H0
H3High pressure switch error
H6Position sensor abnormality
Error DescriptionAction
Compressor sensor system abnormality
1. Check installation conditions.
2. Check stop valve.
3. Check HPS connection.
4. Check pressure level by pressure gauge.
5. Wait for 10 minutes then restart the system.
6. Check if H3 is displayed.
1. Check stop valve.
2. Check low pressure sensor connection.
3. Check low side pressure and voltage.
4. Check outdoor coil sensor connection.
5. Check sensor resistance value.
6. Check refrigerant level.
1. Check connection on discharge pipe sensor.
2. Check discharge pipe sensor resistance value.
3. Check the EXV.
4. Check the refrigerant line on blockage or shortage.
1. Check with inverter checker.
2. Check the EXV.
1. Check the fan motor connection.
2. Check if foreign matters exist around or in the fan.
1. Measure the input current.
2. Check the main circuit electrolytic capacitor.
3. Check with inverter checker.
4. Check discharge pressure.
5. Check the installation condition.
1. Restart the system.
2. Check the EXV connection.
3. Check EXV coil resistance.
4. Check sensors resistance value.
1. Check 4WV coil connection.
2. Check the continuity of the 4WV coil and harness.
3. Check the 4WV switching output.
4. Check sensor connection.
5. Check sensor resistance value.
6. Check the refrigerant line on blockage or shortage.
1. Check the discharge pipe sensor.
2. Check the EXV.
3. Check the refrigerant line on blockage or shortage.
1. Check the installation space.
2. Check the outdoor fan.
3. Check the EXV.
4. Check the coil sensor.
1. Check the reactor connection.
2. Check the compressor connection.
3. Measure the resistance value between the reactor terminals.
4. Measure the resistance value between the compressor terminals.
1. Check pressure sensor connection.
2. Check HPS continuity.
1. Check for short circuit.
2. Check the electrolytic capacitor voltage.
3. Check compressor harness wire.
4. Check with inverter checker.
46
Troubleshooting M5MSY_(i)
Error
Codes
H8AC current sensor error
H9Outdoor air thermistor short / open
J1Pressure sensor error
J3
J5Suction pipe thermistor short/ open Same as H9.
J6Outdoor heat exchanger Same as H9.
J7
J8Liquid pipe thermistor short/ openSame as H9.
J9Gas pipe thermistor abnormalitySame as H9.
LC
L1Outdoor PCB error
L3Electrical box temperature rise
L4Heat sink overheat
L5IPM error / IGBT error
L8Electrical thermal switchContact dealers for assistance.
L9Stall prevention
P1Open phase or voltage unbalance
P4Heat sink thermistor short / openSame as H9.
PJCapacity setting error1. Check the connection between capacitor and Outdoor PCB.
Error DescriptionAction
1. Restart the system.
2. Check capacitor voltage.
3. Measure the rectifi er input voltage.
4. Check compressor harness wire.
5. Check with inverter checker.
1. Check the sensor connection.
2. Check the sensor resistance value.
1. Check pressure sensor connection.
2. Check pressure and voltage level.
Compressor discharge pipe thermistor short /open / misplaced
Subcooling heat exchanger
thermistor short/ open
Communication Error (control PCB
and inverter PCB)
1. Check the sensor connection.
2. Check the sensor resistance value.
3. Check indoor coil sensor resistance value.
Same as H9.
1. Check fan motor connection.
2. Check if LED blinking normally at outdoor PCB.
1. Check the range of power supply.
2. Check connection between compressor and PCB.
3. Check fan motor resistance.
4. Check the power supply waveform.
1. Restart the system.
2. Check sensor resistance value.
3. Check heat sink temperature and conditions.
4. Check outdoor fan.
5. Check the installation condition.
1. Restart the system.
2. Check the silicon grease condition on heat sink.
3. Check sensor resistance value.
4. Check heat sink temperature and conditions.
5. Check outdoor fan.
6. Check the installation condition.
1. Check stop valve.
2. Check with inverter checker.
3. Check the power transistor.
4. Check the supply voltage.
5. Check the compressor phase.
6. Check the discharge pressure.
7. Check the installation condition.
1. Check installation conditions.
2. Check stop valve.
3. Check difference between high and low pressure side.
4. Check continuity on the power transistor.
5. Check the output voltage.
1. Check LED on outdoor PCB.
2. Check open phase of power supply voltage.
3. Check voltage balance between phases.
47
M5MSY_(i)Troubleshooting
Outdoor LED error indication
The outdoor unit LED indicates the running condition of the system:
LED INDICATION
DescriptionGreenRed
A1234
NORMAL
INSTALLATION ERROR
ANTIFREEZE (OTHER ROOMS)
HEAT SINK OVERHEAT
IPM ERROR/IGBT ERROR
INSUFFICIENT GAS
AC INPUT OVER CURRENT
COMPRESSOR START-UP ERROR
COMMUNICATION ERROR (OUTDOOR CONTROL PCB
AND IPM PCB)
If faulty condition occurs, please contact the nearest local dealer or qualifi ed service personnel. Do not attempt
to troubleshoot the unit yourself. For any enquiries on spare parts please contact your authorized dealer.
48
Troubleshooting M5MSY_(i)
Error Code Diagnosis by Unit Last State Memory Using Wireless Handset
1. Remove battery from wireless handset.
2. Wait for the display to fi nally go off (as this handset uses very small amount of power, hence it takes
longer for the memory to reset).
3. Replace battery again and immediately (before display comes back on the LCD screen), press on Mode
and ON/OFF buttons together until you see “00” is being displayed.
4. Press Mode button to 5:00.
5. Press ON/OFF button once.
6. After that, remove battery from wireless handset and wait until the display has gone off. Then, replace
battery again into the handset.
7. Finally, repeat the fault diagnosis steps by wireless handset GS01 above.
Error Code Diagnosis by Unit Last State Memory Using Wired Handset
1. Press SLEEP and TIMER ACTIVE buttons together until error code starts fl ashing on the last 2 digits of
the clock display area.
49
M5MSY_(i)Exploded View and Part List
Exploded View and Part List
Indoor Unit
Model: M5WMY10/15LR
No
Description
1Assy. Front Grille
2Assy. Panel
3Assy. Disch. Grille Hor.Blade
4Bottom Frame Assy.
5Assy. Control Box
6Assy. Service Cover
7Assy. Piping Fixture
8Motor
9Motor Mounting Plate (1)
10 Motor Mounting Plate (2)
11Blower, Cross Flow
Note: All exploded view and part list are subjected to change by the manufacturer without prior notice
No
Description
12 Assy. Installation Plate
13 Right Side Panel
14 Drip Proof Cover
15 Clip, Coil Sensor
16 Assy. Coil
17 Assy. Drain Hose
18 Fan Bearing Vibration Absorber Set
19 Air Filter
20 Handset, Wireless
21 Assy. PCB (With Lamp Cover)
50
Exploded View and Part List M5MSY_(i)
Indoor Unit
Model: M5WMY10/15JR
16
15
14
13
11
8
12
18
4
3
1
2
No
Description
1Assy. Front Grille
No
Description
11Blower
10
9
17
7
20
5
6
19
2Panel
3Disch. Grille Hor. Blade Assy.
4Assy. Bottom Frame
5Assy. Control Box
6Assy. Service Cover
7Assy. Piping Fixture
8Motor
9Motor Mounting Plate (1)
10 Motor Mounting Plate (2)
12 Assy. Installation Plate
13 Right Side Panel
14 Cover, Drip Proof
15 Clip, Coil Sensor
16 Assy. Heat Exchanger
17 Assy. Drain Hose
18 Fan Bearing Vibration Absorber
19 Air Filter
20 Assy. Control Module
Note: All exploded view and part list are subjected to change by the manufacturer without prior notice
51
M5MSY_(i)Exploded View and Part List
Indoor Unit
Model: M5WMY 20JR
No Description
1
Assy. Chasis
2
Motor
3
Blower
4
Fan Bush
5
Cover, Motor
6
Assy. Heat Exchanger
7
Assy. Air Discharge Housing
8
Assy. Louver
9
Hose
Note: All exploded view and part list are subjected to change by the manufacturer without prior notice
No Description
10
Assy. Control Box
11
Assy. Control Module
12
Cover, Control Box
13
Cover, Service
14
Assy. Mounting Plate
15
Assy. Front Cover
16
Cover, Front
17
Intake Grille
18
Filter
52
Exploded View and Part List M5MSY_(i)
Indoor Unit
Model: PLCKY-CR
No Description
1
Frame
2
Assy. Intake Grille B
3
Filter
4
Lock, Grille
5
Discharge, Foam
6
Discharge, Foam LED
7
Discharge, Foam Short
8
Louver
9
Louver, LED
10
Lingkage, Cover
Note: All exploded view and part list are subjected to change by the manufacturer without prior notice
No Description
11
Lingkage, Motor Cover
12
Assy. Bracket Receiver (LED/SLM)
13
Assy. Motor
14
Crank, Connector
15
Louver, Holder
16
Cross, Crank
17
Ins. Long
18
Ins. Short
19
Ins. Corner
53
M5MSY_(i) Exploded View and Part List
Indoor Unit
Model: M5CKY 10/15/20CR
Note: All exploded view and part list are subjected to change by the manufacturer without prior notice
54
Exploded View and Part List M5MS_(i)
Indoor Unit
Model: M5CKY 10/15/20CR
No Description
1
Assy. Base
2
Assy. Casing
3
Assy. Heat Exchanger
4
Cover, Fan
5
Blower
6
Plate, Wire
7
Motor
8
Bush, Motor
9
Bush, Motor Ring
10
Assy. Control Box
11
Pump, Water
12
Switch, Water Level
13
Bush, Wire
No Description
14
Bush, Pump
15
Assy. Drain Pump Support Bracket
16
Assy. End Plate Support
17
Clip, Coil Sensor
18
Support, Heat Exchanger
19
Cover, Terminal
20
Assy. Cover Wire
21
Connector, Drain
22
Hose, Drain
23
Assy. Cover Valve
24
Assy. Drain Pan
25
Bush, Wire
26
Cover, Wire Bracket
Note: All exploded view and part list are subjected to change by the manufacturer without prior notice
55
M5MSY_(i)Exploded View and Part List
Indoor Unit
Model: M5CCY 10/15/20CR
No Description
1
Cabinet
2
Assy. Fan Deck
3
Assy. Heat Exchanger
4
Assy. Drain Pan
5
Assy. Secondary Drain Pan
6
Hanger
7
Control Module
8
Assy. Blower Right
Note: All exploded view and part list are subjected to change by the manufacturer without prior notice
No Description
9
Assy. Blower Left
10
Motor
Parts Not in Diagram
Handset, Wired
Air Filter
Holder, Thermistor
Clip, Coil Sensor
56
Exploded View and Part List M5MSY_(i)
Indoor Unit
Model: M5CMY 15/20ER
ote: All exploded view and part list are subjected to change by the manufacturer without prior notice
57
M5MSY_(i) Exploded View and Part List
Indoor Unit
Model: M5CMY 15/20/25ER
No Description
1
Assy. Top Panel
2
Assy. Heat Exchanger
3
Assy. Vane
4
Assy. Drain Pan
5
Assy. Control Box
6
Terminal Box Cover
7
Motor
8
Bracket, Motor
9
Blower
10
Housing, Blower
11
Motor, Louver
No Description
12
Assy. Panel Bottom
13
Cover, Hanger L1 (C)
14
Cover, Hanger L2 (D)
15
Cover, Hanger R1 (A)
16
Cover, Hanger R2 (B)
17
Bracket, Mounting
18
Control Box Cover
Parts Not in Diagram
Handset, Wireless
Control Module
Intake Grille
Note: All exploded view and part list are subjected to change by the manufacturer without prior notice