Acson AWM 301 User manual

WALL MOUNTED
SPLIT TYPE AIR CONDITIONER
Model: IM-WM1-0302-ACSON
WALL MOUNTED
INSTALLATION MANUAL

OUTLINE AND DIMENSIONS
All dimensions are in mm / (in)
i
Dimension A B C D E
WM071 / 101 / 151 / 1R 785,0 (30,9) 297,0 (11,7) 174,0 (6,85) 595,0 (23,4) 280,0 (11,0)
WM201 / 201R 1050,0 (41,3) 320,0 (12,6) 190,0 (7,5) 730,0 (28,7) 311,0 (12,2)
WM 251 / 251R / 301 / 311 / 301R 1200,0 (44,1) 360,0 (14,2) 200,0 (7,9) 730,0 (28,7) 347,0 (13,7)
Indoor Unit
D
INSTALLATION PLATE
E
FRONT VIEW
TOP VIEW
A
B
C
SIDE VIEW
Outdoor Unit (SL-Series)
Dimension A B C D E F G H J K L M N P Q R
07B / 07BR 740 494 270 266 233 474 47 55 65 166 92 348 318 129 482 68,5
10B / 10BR (29,1) (19,4) (10,6) (10,5) (9,2) (18,7) (1,9) (2,2) (2,6) (6,5) (3,6) (13,7) (12,5) (5,1) (19,0) (2,7)
15B / 15BR
20B / 20BR 840 646 330 297 309 626 41 85 75 177 106 408 378 124 592 78,5
25B / 25BR (33,1) (25,4) (13,0) (11,7) (12,2) (24,6) (1,6) (3,3) (3,0) (7,0) (4,2) (16,1) (14,9) (4,9) (23,3) (3,1)
30B / 30BR
28C / 28CR 855 750 328 303 309 730 49 116 75 187 98 392 362 126 603 164
(33,7) (29,5) (12,9) (11,9) (12,2) (28,7) (1,9) (4,6) (3,0) (7,4) (3,9) (15,4) (14,3) (5,0) (23,7) (6,5)
All dimensions are in mm / (in)
Q
N
E
15 (0,6)
39 (1,5)
A
M
PP
840 (33,1)
D
15 (0,6)
39 (1,5)
5 (0,2)
C
20 (0,8)
20 (0,8)
2,5 (0,1)
F
B
C
5 (0,2)
160 (6,3) H
G
141 (5,6)
K
J
(2,6)
65
L
20 (0,8)
R
Outdoor Unit (SL071 & 10/15 C/CR)
All dimensions are in mm / (in)
Dimension A B C D E F G H I J K L M N O
071 / 1R 600 (23,6) 475 (18,7) 245 (9,6) 418 (16,4) 177 (6,9) 35 (1,3) 93 (3,6) 81 (3,1) 83 (3,2) 55 (2,2) 398 (15,6) 101 (3,9) 97 (3,8) 17 (0,6) 22 (0,8)
10 / 15 C /CR 700 (27,5) 521 (20,5) 250 (9,8) 485 (19,1) 175 (6,8) 36 (1,4) 95 (3,7) 93 (3,6) 86 (3,3) 68 (2,6) 441 (17,3) 130 (5,1) 111 (4,3) 15 (0,5) 18 (0,7)

40 (1,57)
400 (15,75)
320 (12,60)
20 (0,79) 448 (17,64)
141,5 (5,57)
40 (1,57)
20 (0,79)
141,5 (5,57)
Outdoor Unit (SL30C)
ii
This product is subjected to Waste of Electrical and Electronic Equipment Regulations (WEE
E
Regulations). The waste product shall be separately collected by specific collection and treatment centre
.
P
lease refer to local authorithy for these centres. This is only applicable to European Union countries
.
Ce produit est soumis
à
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r
r
glementation concernant les
d
é
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quipements
é
lectriques e
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m
ent par un centre de collect
e
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tre ces centres. Ceci
îî
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enne
.
Questo prodotto
è
soggetto alle disposizioni RAEE (Rifiuti di apparecchiature elettriche ed elettroniche)
.
à
à
locali. Questa disposizione
à
è
valida solamente i paes
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é
ctrico y Electr
ó
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solamente aplicable a los p
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ää
getrennt vom Hausm
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Ев
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опейског
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25 (0,98)
1030 (40,55)
850 (33,46)
50 (1,97)
85 (3,35)
ii
!Осторожно Острые края и поверхности змеевиков являются потенциальными
местами нанесения травм. Остерегайтесь контакта с этими местами.
!Cuidado Los Bordes afilados y la superficie del serpentín pueden producir lesiones. Evite
tocarlos.
!Cautela Per preservarsi da eventuali ferite, evitare di toccare gli spigoli afilati e la superficie
dei serpentini.
!Vorsicht Scharfe Kanten und Wärmetauscherflächen stellen eine Gefahrenquelle dar.
Jeglicher Kontakt mit diesen Stellen ist zu vermeiden.
!Avertissement Les bords coupants et les surfaces du refroidisseur tuulaire présentent un
risque de blessure. Mieux vaut éviter le contact avec ces endroits.
!Caution Sharp edges and coil surfaces are potential locations which may cause
injury hazards. Avoid from being in contact with these places.
NOTICE

1-1
English
This manual provides the procedures of installation to ensure a safe and good standard of operation for the air
conditioner unit.
Special adjustment may be necessary to suit local requirements.
Before using your air conditioner, please read this instruction manual carefully and keep it for future reference.
INSTALLATION MANUAL
WALL MOUNTED SPLIT TYPE AIR CONDITIONER
MODEL
IM-WM1-0302(2)-Acson
Part No.: A08019025521
COOLING UNIT (R22)
Reference Model Model
WM301 AWM301
SL30C ALC30C
SL30B ALC30B
COOLING UNIT (R410A)
Reference Model Model
5WM311 A5WM311
5SL28C A5LC28C
HEAT PUMP UNIT (R22)
Reference Model Model
WM301R AWM301R
SL30CR ALC30CR
SL30BR ALC30BR
HEAT PUMP UNIT (R410A)
Reference Model Model
5WM301R AWM301R
5SL28CR A5LC28CR

1-2
!Caution
Please take note of the following important points when installing.
• Do not install the unit where leakage of flammable gas may occur.
If gas leaks and accumulates at the surrounding of the unit, it may cause fire ignition.
• Ensure that the drainage piping is connected properly.
If the drainage piping is not connected properly, it may cause water leakage which will dampen the
furniture.
• Do not overcharge the unit.
This unit is factory pre-charged. Overcharge will cause over-current or damage to the compressor.
• Ensure that the units panel is closed after service or installation.
Unsecured panels will cause the unit to operate noisily.
CONTENTS
- Outline and Dimensions page i-ii
- Safety Precautions page 2
- Installation Diagram page 3
- Installation of the Outdoor Unit page 3
- Installation of the Orifice Pipe page 4
- Installation of the Indoor Unit page 6
- Refrigerant Piping page 7
- Electrical Wiring Connection page 8
- Special Precautions When Dealing With R410A Unit page 10
- Vacuuming and Charging page 10
- Indicator Lights page 11
- Air Conditioner Unit Operation page 13
- Standard Operating Conditions page 14
- Electrostatic Filter page 14
- Service and Maintenance page 15
- Troubleshooting page 16
Before installing the air conditioner unit, please read the following safety precautions carefully.
SAFETY PRECAUTIONS
!Warning
• Installation and maintenance should be performed by qualified persons who are familiar with local code and
regulation, and experienced with this type of appliance.
• All field wiring must be installed in accordance with the national wiring regulation.
• Ensure that the rated voltage of the unit corresponds to that of the name plate before commencing wiring work
according to the wiring diagram.
• The unit must be GROUNDED to prevent possible hazard due to insulation failure.
• All electrical wiring must not touch the refrigerant piping, compressor or any moving parts of the fan motors.
• Confirm that the unit has been switched OFF before installing or servicing the unit.
IMPORTANT
DO NOT INSTALL OR USE THE AIR CONDITIONER UNIT IN A LAUNDRY ROOM.

1-3
English
Dimension A
Minimum
Distance, mm 300 1000
INSTALLATION DIAGRAM
Air Intake Grille
Air Discharge
Grille
Air Intake
Refrigerant Piping
Drain Hose
Front Frame
Back Housing
On/Off Switch
Air Filters
Indicator Lights
Signal Receiver
Air Discharge
Louver
Outdoor Unit
Indoor Unit
INSTALLATION OF THE OUTDOOR UNIT
Obstacle
Return Air
Discharge Air
Service Access
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 flow. Please follow the installation clear-
ance shown in the figure. Select the coolest possible place
where intake air temperature is not greater than the outside
air temperature (maximum 45°C/113°F).
Installation clearance
Note: If there is any obstacle higher than 2m, or if there is
any obstruction at the upper part of the unit, please allow
more space than the figure indicated in the above table.
Air Discharge
Nozzle
Obstacle
Obstacle
Obstacle
Return Air
AB
CD
Air Intake
(in) (11.8) (39.4) (11.8) (19.7)
B C D
300 500

1-4
INSTALLATION OF ORIFICE PIPE
Orifice Pipe
1
2
34
1
2
3
4
Outdoor Unit Indoor
Orifice
Pipe, connecting
Flare nut 3/8" (Female)
Flare joint 3/8" (Male)
!Caution
The orifice pipe must be installed in the correct direction as shown above.
Improper direction may cause failure to the operating system.
Note: This installation is only for WM301 / SL30B & WM301 / SL30C
A. Outdoor unit orifice pipe installation (where installation space is wide enough)
Orifice Pipe
Step 2
Step 1
Steps:
1. Directly connect the “Female” nut of the orifice pipe to
the liquid valve.
2. Flare the liquid pipe and connect it to the “Male” joint
of the orifice pipe.
Orifice Pipe
Liquid Pipe

1-5
English
Liquid Pipe
Brazer
C. Indoor unit orifice pipe installation
Indoor Unit
Orifice Pipe
B. Outdoor unit orifice pipe installation (where installation space is limited)
Step 4
Step 3
Step 2
Step 1
Orifice Pipe
If the orifice pipe cannot be connected directly to the liquid valve due to space constraint, it can be connected in between of the
liquid pipe.
Steps:
1. Flare the liquid pipe and connect it to the liquid valve.
2. Braze an additional “Male” joint to the liquid pipe.
3. Connect the “Female” nut of the Orifice pipe to
the“Male” joint.
4. Flare another liquid pipe and connect it to the “Male”
joint of the orifice pipe.
Steps:
1. Braze an additional “Male” joint
to the liquid pipe.
3. Flare another liquid pipe and
connect it to the “Male” joint
of the orifice pipe.
2. Connect the “Female” nut of the
Orifice pipe to the“Male” joint.
Liquid Pipe
Brazer
Liquid Pipe Orifice Pipe Liquid Pipe
Orifice Pipe
Liquid Pipe Orifice Pipe
Liquid Pipe
Orifice Pipe

1-6
INSTALLATION OF THE INDOOR UNIT
Maintenance &
Servicing Space
Air Flow
Direction
Higher Than
Eye Level
The indoor unit must be installed in such a way so as to
prevent short circuit of the cool discharged air with the hot
return air. Please follow the installation clearance shown in
the figure. Do not place the indoor unit where there could be
direct sunlight shining on it. Also, this location must be
suitable for piping and drainage, and be away from doors or
windows.
Mounting installation plate
Ensure that the wall is strong enough to withstand the weight
of the unit. Otherwise, it is necessary to reinforce the wall
with plates, beams or pillars.
Use the level gauge for horizontal mounting, and fix it with
4 suitable screws.
In case the rear piping draws out, drill a hole 65mm in
diameter with a cone drill, slightly lower on the outside wall
(see figure).
Routing of piping
Remove the screw holding the front panel.
Piping routing
1
23
4
5
Installation plate
Marking-offline
Thread
Inside Outside
1/50 Inclination
Right & rear side routing
The refrigerant piping can be routed to the unit in a
number of ways (left or right from the back of the unit), by
using the cut-out holes on the casing of the unit (see figure).
Bend the pipes carefully to the required position in order to
aligned it with the holes. For the right hand and rear side
out, hold the bottom of the piping and then position it to the
required direction (see figure). The condensation drain hose
can be taped to the pipes.
Mount the unit onto the installation plate
Hook the indoor unit onto the upper portion of the
installation plate (Engage the two hooks at the rear top of
the indoor unit with the upper edge of the installation plate).
Ensure that the hooks are properly seated on the
installation plate by moving it to the left and right.
End
Dipped
Into
Water
Water
Leaking
Water
Leaking Water
Leaking
Water drainage piping
The indoor drain pipe must be in a downward gradient for
smooth drainage. Avoid situations that are likely to cause
water to leak.
Connecting cable
Drain hose
J
Wrong
J
Wrong
J
Wrong
j
Correct
✓
50mm 50mm
50mm
50mm 50mm
50mm
Water Drainage

1-7
English
Piping length and elevation
If the pipe is too long, both the capacity and reliability of
the unit will drop. As the number of bends increases,
resistance to the flow of refrigerant system increases, thus
lowering cooling capacity. As a result the compressor may
become defective. Always choose the shortest path and
follow the recommendations as tabulated below:
Remark: The refrigerant pre-charged in the outdoor unit
is for piping length up to 7.62m/25ft.
REFRIGERANT PIPING
Outdoor unit
Indoor unit
Cutting copper tube
Piping works
• Do not use contaminated or damaged copper tubing. Do not
remove plastic, rubber plugs and brass nuts from the valves,
fittings, tubings and coils until you are ready to connect
suction or liquid line into valves or fittings.
• If any brazing work is required, ensure that the nitrogen gas
is passed through coil and joints while the brazing work is
being done. This will eliminate soot formation on the inside
walls of the copper tubings.
• Cut the connection pipe with a pipe cutter.
• Remove burrs from cut edges of the pipes with remover. Hold
the end of the pipe downwards to prevent metal chips from
entering the pipe.
• Insert the flare nuts, mounted on the connection parts of both
the indoor unit and outdoor unit onto the copper pipes.
• Flare the pipe with extra length above the flaring tool as shown
in the table.
• The flared edge must be even and not cracked or scratched.
!Caution
An orifice is used as expansion device in WM301 cooling only unit. It is fixed in the liquid pipe in the indoor unit.
Piping connection to the units
• Align the center of the piping and tighten the flare nut
sufficiently with fingers.
• Finally, tighten the flare nut with the torque wrench
until the wrench clicks.
Ø Tube, D A (mm)
Inch mm Imperial Rigid
1/4" 6.35 1.3 0.7
3/8" 9.52 1.6 1.0
Spanar Torque Wrench
Indoor Piping Flare Nut
Flared TubeFlare Joint
LH
Pipe Size mm / (in) Torque Nm / (Ft-lb)
12.7 (1/2) 55 (40.6)
15.88 (5/8) 65 (48.0)
6.35 (1/4) 18 (13.3)
9.53 (3/8) 42 (31.0)
1/2" 12.70 1.9 1.3
5/8" 15.88 2.2 1.7
25Model 07/10 15 20 30
Maximum length, m (ft), L 12 (39.4) 12 (39.4) 15 (49.2) 15 (49.2) 35 (114.8)
Maximum elevation m (ft), H 5 (16.4) 5 (16.4) 8 (26.2) 8 (26.2) 15 (49.2)
Maximum number of bends 10 10 10 10 10
Liquid pipe size 1/4" 1/4" 1/4" 3/8" 3/8"
Gas pipe size 3/8" 1/2" 5/8" 5/8" 5/8"
Copper tube
Swaging block
Remove burr

1-8
L
COMP
N2
N1
N
T
COMP
L
N
S
R
COMP
N2
N1
L
COMP
N
ELECTRICAL WIRING CONNECTION
Cooling unit
IMPORTANT : * The figures 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. ETL listed is only applicable to 60Hz
power supply only.
COMP
N2
N1
LCOMP
R
S
N
L
N
L
WM301 VS SL30C
WM07 / 10 / 15 / 20 / 25 / 301 VS SL07 / 10 / 15 / 20 / 25 / 30B
5WM311 VS 5SL28C
There must be a double pole
switch with a minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!
Outdoor Unit
Terminal Block
Power Supply Cable Power Supply Cable
There must be a double pole
switch with a minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!
Indoor Unit
Terminal Block
Outdoor Unit
Terminal Block
Power Supply Cable
There must be a double pole
switch with a minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!
WM201 / 251 VS SL20 / 25B (3 Phase)
Indoor Unit
Terminal Block
Outdoor Unit
Terminal Block
L
COMP
N2
N1
N
T
COMP
L
N
S
R
There must be a double pole
switch with a minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!
Power Supply Cable
Indoor Unit
Terminal Block
Outdoor Unit
Terminal Block
WM301 VS SL30C (3 Phase)
Wire Clamp
Interconnection
Cable
• All wires must be firmly 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 as shown in the
figure.
• The power supply cord must be equivalent to H05RN-F
(245IEC57) which is the minimum requirement.
Model Indoor WM 071/ 101/ 151 WM201/ 251/ 301 5WM311 WM301 WM201/ 251/ 301 WM301
Outdoor SL07/ 10/ 15B SL20/ 25/ 30B 5SL28C SL30C SL20/ 25/ 30B SL30C
Voltage range** 220V-240V/ 1Ph/ 50Hz + or 208V-230V/ 1Ph/ 60Hz + 380V-415V/ 3Ph/ 50Hz +N+
Power supply cable size* mm
2
1.5 2.5 2.5 4 1.5 1.5
Number of wires 333355
Interconnection cable size* mm
2
1.5 2.5 2.5 2.5 1.5 1.5
Number of wires 333444
Recommended fuse A 15 20 20 25 15 15
Indoor Unit
Terminal Block

1-9
English
Heat pump unit
4WV
OF
COMP
N2
N1
L
4WV
OF
COMP
N
4WV
OF
COMP
N2
N1
L
4WV
A
OF
COMP
L
N
L
N
WM301R VS SL30CR
WM07 / 10 / 15 / 20 / 25 / 301R VS SL07 / 10 / 15 / 20 / 25 / 30BR
5WM301R VS 5SL28CR
There must be a double pole
switch with a minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!
Indoor Unit
Terminal Block
Outdoor Unit
Terminal Block
Power Supply Cable
Outdoor Coil Sensor Connection Wire
(8m long) attached in the indoor unit
There must be a double pole
switch with a minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!
Indoor Unit
Terminal Block
Outdoor Unit
Terminal Block
Power Supply Cable
Outdoor Coil Sensor Connection Wire
(8m long) attached in the indoor unit
4WV
OF
COMP
N2
N1
L
4WV
OF
COMP
L
N
S
R
N
T
4WV
OF
COMP
N2
N1
L
4WV
OF
COMP
L
N
A
S
R
N
T
WM301R VS SL30CR (3 Phase)WM201 / 251R VS SL20 / 25BR (3 Phase)
Outdoor Coil Sensor Connection Wire
(8m long) attached in the indoor unit
Outdoor Coil Sensor Connection Wire
(8m long) attached in the indoor unit
There must be a double pole
switch with a minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!
Indoor Unit
Terminal Block
Outdoor Unit
Terminal Block
Power Supply Cable
Indoor Unit
Terminal Block
Outdoor Unit
Terminal Block
There must be a double pole
switch with a minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!
Power Supply Cable
IMPORTANT : * The figures 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. ETL listed is only applicable to 60Hz
power supply only.
Model Indoor WM 071/ 101/ 151 R WM201/ 251/ 301 R 5WM301R WM301 R WM201/ 251/ 301 R WM301 R
Outdoor SL07/ 10/ 15BR SL20/ 25/ 30BR 5SL28CR SL30CR SL20/ 25/ 30BR SL30CR
Voltage range** 220V-240V/ 1Ph/ 50Hz + or 208V-230V/ 1Ph/ 60Hz + 380V-415V/ 3Ph/ 50Hz +N+
Power supply cable size* mm
2
1.5 2.5 2.5 4 1.5 1.5
Number of wires 3 3 3355
Interconnection cable size* mm
2
1.5 2.5 2.5 2.5 1.5 1.5
Number of wires 5 5 5664
Recommended fuse A 15 20 20 25 15 15

1-10
VACUUMING AND CHARGING
Purging the piping and the indoor unit
Except for the outdoor unit which is pre-charged with
refrigerant, the indoor unit and the refrigerant
connection pipes must be air-purged because the air
containing moisture that remains in the refrigerant cycle may
cause malfunction of the compressor.
• Remove the caps from the valve and the service port.
• Connect the centre of the charging gauge to the vacuum
pump.
• Connect the charging gauge to the service port of the
3-way valve.
• Start the vacuum pump. Evacuate for approximately 30
minutes. The evacuation time varies with different
vacuum pump capacity. Confirm that the charging gauge
needle has moved towards -76mmHg (0~76mmHg).
Caution
If the gauge needle does not move to 0~76mmHg, be
sure to check for gas leaks (using the refrigerant
detector) at flare type connection of the indoor and out-
door unit and repair the leak before proceeding to the
next step.
• Close the valve of the changing gauge and stop the
vacuum pump.
• On the outdoor unit, open the suction valve (3 way) and
liquid valve (2 way) (in anti-clockwise direction) with
4mm key for hexagon sacked screw.
Service Port Outdoor Unit
3 Ways Valve
Flare Unit Refrigerant Piping
Allen Key
Open
Indoor Unit Outdoor Unit
Close
Close
Close
Discharge
Valve
Suction
Valve
Gas Side
Liquid Side
Vacuum
Pump Low
Hi
SPECIAL PRECAUTIONS WHEN DEALING WITH R410A UNIT
• R410A is a near azeotrope refrigerant blend of hydro fluorocarbon (HFC) which is environmental friendly. It has Zero
Ozone Depletion Potential (ODP=0) and this conforms to Montreal Protocol regulations. It has no flame propagation and
a low toxic refrigerant (rated as A1 by ARI). R410A is a mixture of R32 (50%) and R125 (50%).
• POE oil is used as lubricant for R410A compressor, which is different from the mineral oil used for R22 compressor.
During installation or servicing, extra precaution must be taken not to expose the R410A system too long to moist air.
Residual POE oil in the piping and components can absorb moisture from the air.
• Refrigerant R410A is more easily affected by dust of moisture compared with R22, make sure to temporarily cover the
ends of the tubing prior to installation.
• No additional charge of compressor oil only is permitted.
• No refrigerant other than R410A is permitted.
• Tools designed specifically for R410A only.
i) Manifold gauge and charging hose
ii) Gas leak detector
iii) Refrigerant cylinder/charging cylinder
iv) Vacuum pump c/w adaptor
v) Flare tools
vi) Refrigerant recovery machine
!!
!!
!CAUTION
• R410A must be charged as liquid. Usually R410A cylinder is equipped with a dip-pipe for liquid withdrawal.
If there is no dip-pipe, the cylinder should be inverted so as to withdraw liquid R410A from the valve.
• Do not top-up when servicing leak, as this will reduce the unit performance. Vacuum the unit thoroughly and then
charge the unit with fresh R410A according to the amount recommended in the specification.
• Do not touch the compressor or refrigerant piping when the chiller is running. If necessary wear protective gloves.
Additional charge
The refrigerant is pre-charged in the outdoor unit. If the
piping length is less than 7.62m (25 ft), then additional
charge after vacuuming is not necessary. If the piping length
is more than 7.62m (25 ft), then use the additional charge
valve as indicated in the table below.

1-11
English
IR signal receiver
When an infrared remote control operating signal has been
transmitted, the signal receiver on the indoor unit will
make a <beep> sound to confirm acceptance of the sig-
nal transmission.
INDICATOR LIGHTS
Cooling 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 bottom right side
of the air conditioner unit.
LED Indicator Lights : Normal Operation And Fault Conditions For Cooling Unit
LED Indicator Lights for Cooling Unit
Power ON Timer
Sleep mode
Dry mode
LED Indicator Lights
IR Receiver
Operation / Fault Indication Action
Timer on. –
Sleep mode on. –
Dry mode. –
Frost prevention. Clean the filter and switch to high fan.
Room air sensor contact loose/short. Call your dealer.
Indoor coil sensor contact loose/short. Call your dealer.
Sensor contact problem, compressor Call your dealer.
overload protection trip or gas leak
ON or OFFON Blinking
Power Dry Timer Sleep
Continuously
once every 2 sec.
twice every 2 sec.
3 times every 2 sec.
Charge operation
This operation must be done by using a gas cylinder and a
precise weighing machine. The additional charge is topped-
up into the outdoor unit using the suction valve via the
service port.
• Remove the service port cap.
• Connect the low pressure side of the charging gauge to
the suction service port center of the cylinder tank and
close the high pressure side of the gauge. Purge the air
from the service hose.
• Start the air conditioner unit.
Indoor Unit Outdoor Unit
Liquid Side
Discharge
Valve
Suction
Valve
Gas Side
Close
Close
Close
Open
Check
Valve
Low Hi
Model 10 m/32.8 ft 12 m/39.4 ft 15 m/49.2 ft
071 / 101 / 151 35 65 -
201 35 65 110
251 / 301 90 165 280
071R / 101R /151R 50 90 -
201R 60 110 185
251R / 301R 120 220 370
Model 10 m/32.8 ft 12 m/39.4 ft 15 m/49.2 ft
311 80 150 255
301R 110 200 335
Additional charge in gram (R410A)
• Open the gas cylinder and low pressure charging valve.
• When the required refrigerant quantity is pumped into
the unit, close the low pressure side and the gas cylin-
der valve.
• Disconnect the service hose from service port. Put back
the service port cap.
Additional charge in gram (R22)

1-12
LED Indicator Lights : Normal Operation And Fault Conditions For Heat Pump Unit
Cooling mode. –
Dry mode. –
Fan mode. –
Heat mode. –
Auto mode in heating operation. –
Auto mode in cooling operation. –
Defrost operation. –
Compressor overload protection. Call your dealer.
Indoor coil sensor contact loose/short. Call your dealer.
Outdoor coil sensor contact loose/short. Call your dealer.
Room air sensor contact loose/short. Call your dealer.
If the system is in cool mode or heat mode (with the sleep function off), the sensor
may have a contact problem, compressor overload protection trip or gas leak.
Normal Operation/Fault Condition Action
Cool Dry Fan Heat Sleep
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 bottom right
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.
LED Indicator Lights For Heat Pump Unit
Cooling mode Dry mode Heat/Fan mode Sleep mode
(red/green)
ON or OFF
ON Blinking

1-13
English
Cooling
Dry
Horizontal
25°C/77°F
AIR CONDITIONER UNIT OPERATION
Dry mode
• When the air humidity is high, the unit can operate in dry
mode. Press <MODE> button and choose <DRY>.
• If the room temperature is 2°C/35.6°F higher than the set
temperature, the air conditioner will operate under cooling
mode until it reaches within the 2°C/35.6°F range of
difference compared to the set temperature before it
converts to dry mode.
• If the room temperature is within the 2°C/35.6°F range of
difference compared to the set temperature, it will
directly operate under dry mode.
• The unit will operate at LOW speed under dry mode.
Heat mode (for heat pump unit only)
• When the unit is switched on from cold start or
defrosting cycle, the indoor fan will start to operate only
after the coil reaches the desired temperature.
• When the set temperature is achieved, the indoor fan will
operate until the coil cannot provide anymore
additional heat.
Horizontal air flow control
• For more effective air circulation, you can manually adjust
the air discharge grille to the left or right.
• During cool mode operation and dry mode operation, do
not direct the air discharge louver downwards for too long.
If operating continues in this way, condensation may occur
on the louver, thus resulting in drippings.
Hot Keep (for heat pump only)
• During compressor cut off, the indoor fan can be switched
to
(i) ON (default) or
(ii) OFF or
(iii) Interval on and off
by setting the slide switch shown in the diagram.
• The switch is located at the front frame cover (next to
the ON/OFF switch).
NOTE : When the option is selected, the power supply of
the unit need to be reset in order to activate the
function.
Overheating protection (for heat pump unit only)
• In case the internal and/or the external temperature is to
high, or the filter is dirty and clogged up, the refrigerant
may be overheated. The compressor will cut out when the
condensing temperature reaches 62°C/143.6°F.
Frost prevention
• When the air filter is dirty, the evaporating temperature
will decrease and eventually cause frosting.
• The LED light will blink to indicate that the filter is dirty.
If the evaporating temperature reaches -2°C/28.4°F, the
unit will trip and defrost.
Fan speed and rated cooling capacity
• The rated cooling capacity is provided at the maximum
fan speed.
• The cooling capacity is lower when the unit is operating at
MEDIUM and LOW fan speed.
ON/OFF switch
HOT KEEP
OFF
INTERVAL
ON

1-14
!Warning
• Disconnect from the main power supply before servicing the air conditioner unit.
• DO NOT pull out the power cord when the power is ON. This may cause serious electrical shocks which may result
in fire hazards.
HOW TO INSTALL
DUAL ACTION ELECTROSTATIC AIR PURIFYING
AND DEODORIZING FILTER MEDIA AND FILTER FRAME
ACTION 1-
ELECTROSTATIC AIR PURIFYING FILTER
Removes microscopic dust, smoke and small invisible
particles to keep the room air clean with pre-charged
electrostatic polypropylene filter.
ELECTROSTATIC FILTER
ACTION 2-
DEODORIZING FILTER
Removes unwanted smells and odors in the air and keeps
the room air fresh with activated carbon filter.
STANDARD OPERATING CONDITIONS
Heat Pump Unit
Temperature Ts °C/°F Th °C/°F
Minimum indoor
temperature
Maximum indoor
temperature
Minimum outdoor
temperature
Maximum outdoor
temperature
Ts: Dry bulb temperature. Th: Wet bulb temperature.
Cooling unit
Temperature Ts °C/°F Th °C/°F
Minimum indoor 19.4 / 66.9 13.9 / 57.0
temperature
Maximum indoor 26.7 / 80.1 19.4 / 66.9
temperature
Minimum outdoor 19.4 / 66.9 13.9 / 57.0
temperature
Maximum outdoor 46 / 114.8 24 / 75.2
temperature
10 / 50
26.7 / 80.1
-8 / 17.6
24 / 75.2
-
-
-9 / 15.8
18 / 64.4

1-15
English
SERVICE AND MAINTENANCE
Maintenance Procedures
1. Remove any dust adhering to the filter by using a vacuum cleaner or
wash in lukewarm water (below 40°C/104°F ) with a neutral cleaning
detergent.
2. Rinse the filter well and dry before placing it back onto the unit.
3. Do not use gasoline, volatile substances or chemicals to clean the filter.
1. Clean any dirt or dust on the grille or panel by wiping it off with a soft
cloth soaked in lukewarm water (below 40°C/104°F) and a neutral
detergent solution.
2. Do not use gasoline, volatile substances or chemicals to clean the
indoor unit.
Period
At least once
every 2 weeks.
More frequently if
necessary.
At least once
every 2 weeks.
More frequently if
necessary.
Service Parts
Indoor air filter
Indoor unit
WHEN THE UNIT IS NOT USED FOR AN EXTENDED PERIOD OF TIME
Operate the unit for 2 hours
with the following setting.
Operating mode : cool
Temperature : 30°C/86°F
Remove the power plug.
If you are using an independent
electric circuit for your unit,
cut off the circuit.
Remove the batteries in the
remote control.
!Caution
Do not operate any heating apparatus too close to the air conditioner unit. This may cause the plastic panel to melt
or deform as a result of the excessive heat.
!Warning
•Disconnect from the main power supply before servicing the air conditioner unit.
•DO NOT pull out the power cord when the power is ON. This may cause serious electrical shocks which may
result in fire hazards.
!Caution
1. The electrostatic air purifying and deodorizing filter
should be replaced once every 6 months or when the
filter changes color to brownish, whichever is sooner.
2. Used dusty filters should be disposed and shouldn't be
reused, even if it has been cleaned and washed.
3. The filter is a consumable part which you can purchase
from your air conditioner dealer.
4. Use the new filter immediately once it has been taken
out from its sealed packing. Do not unpack the new
filter too early before it is actually used as this may
decrease its deodorizing effect.

1-16
If any malfunction of the air conditioner unit is noted, immediately switch off the power supply to the unit.
Check the following fault conditions and causes for some simple troubleshooting tips.
TROUBLESHOOTING
Causes / Action
- Protection against frequent starting. Wait for 3 to 4 minutes for
the compressor to start operating.
- Power failure, or the fuse needs to be replaced.
- The power plug is disconnected.
- It is possible that your delay timer has been set incorrectly.
- If the fault persist after all these verifications, please
contact the air conditioner unit installer.
- The air filter is dirty.
- The doors or windows are open.
- The air suction and discharge are clogged.
- The regulated temperature is not high enough.
- Odours may be caused by cigarettes, smoke particles, perfume
etc. which might have adhered onto the coil.
- 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.
- Switch off unit and call dealer.
- Refrigerant fluid flowing into the evaporator coil.
Fault
1. The compressor does not operate 3 minutes after the air
conditioner unit is started.
2. The air conditioner unit does not operate.
3. The air flow is too low.
4. Discharge air flow has bad odour.
5. Condensation on the front air grille of the indoor unit.
6. Water flowing out from the air conditioner unit.
7. Hissing air flow sound from the air conditioner unit during
operation.
If the fault persists, please call your local dealer/serviceman.

2-1
Français
Ce manuel fournit les procédures d’installation pour assurer le bon fonctionnement et la sécurité de cet appareil.
Des ajustements peuvent être nécéssaires pour suivre les réglementations locales.
Avant d’installer et de faire fonctionner le climatiseur, lisez attentivement ce manuel et conservez le.
MANUEL D’INSTALLATION
CLIMATISEURS SPLIT SYSTEM MONTAGE MURAL
MODÈLE
IM-WM1-0302(2)-Acson
FROID SEUL (R22)
Modèle de Référence Modèle
WM301 AWM301
SL30C ALC30C
SL30B ALC30B
FROID SEUL (R410A)
Modèle de Référence Modèle
5WM311 A5WM311
5SL28C A5LC28C
POMPE À CHALEUR (R22)
Modèle de Référence Modèle
WM301R AWM301R
SL30CR ALC30CR
SL30BR ALC30BR
POMPE À CHALEUR (R410A)
Modèle de Référence Modèle
5WM301R A5WM301R
5SL28CR A5LC28CR
Part No.: A08019025521