McQuay WMX20G, MWMX020G Installation Manual

INVERTER WALL MOUNTED SPLIT TYPE
AIR CONDITIONER (G Series)

INSTALLATION MANUAL

Group: INVERTER

Part Number: A08014078756

Date: FEBRUARY 2005

IM-WMXG-0205-McQuay

© 2005 McQuay International

i

All dimensions are in mm / (in)

Indoor Unit (MWMXG Series)

OUTLINE AND DIMENSIONS

INSTALLATION

PLATE

Dimension A B C D E F G H I J K L M N O

10 / 15G / GR 899 260 198 590 246 185 124 8 56 50 419 495 50 128 132

(35,4) (10,2) (7,8) (23,2) (9,7) (7,3) (4,9) (0,3) (2,2) (2,0) (16,5) (19,5) (2,0) (5,1) (5,2)

A

B

FRONT VIEW

TOP VIEW

C

SIDE VIEW

D

F

G

E

H

O

N

I

I

J

K

L

M

ii

Indoor Unit (MWMXG Series)

All dimensions are in mm / (in)

Dimension

20 / 25G / GR

I

48

(1,9)

H

8

(0,3)

G

51

(2,0)

F

99

(3,9)

E

294

(11,6)

D

912

(35,9)

C

220

(8,6)

B

310

(12,2)

A

1060

(41,7)

O

160

(6,3)

N

138

(5,4)

M

160

(6,3)

L

403

(15,9)

K

354

(13,9)

J

43

(1,7)

FRONT VIEW

TOP VIEW

SIDE VIEW

INSTALLATION

PLATE

A

B

C

A

B

D

F

G

M

H

I

I

O

N

M
K
L

J

CENTER LINE

iii

Outdoor Unit (MLCX Series)

All dimensions are in mm / (in)

Dimension A B C D E F G H I J K L M N O

10 / 15C / CR 700 521 250 485 175 36 95 93 86 68 441 130 111 15 18

(27,5) (20,5) (9,8) (19,1) (6,8) (1,4) (3,7) (3,6) (3,3) (2,6) (17,3) (5,1) (4,3) (0,5) (0,7)

3

(0,1)

B

EF

NCN

KLL

M

30

(1,2)

A

D

19

(0,7)

C

GH

I

J

O

80

(3,1)

65

(2,6)

iv

Dimension A B C D E F G H I J K L M N O

20 / 25C / CR 855 730 328 513 182 44 93 149 101 113 603 126 164 17 47

(33,7) (28,7) (12,9) (20,2) (7,2) (1,7) (3,7) (5,9) (4,0) (4,4) (23,7) (5,0) (6,4) (0,7) (1,9)

Dimension P Q R S T

20 / 25C / CR 32 3 23 73 75

(1,3) (0,1) (0,9) (2,9) (3,0)

NOTICE

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

.

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Questo prodottoè soggetto alle disposizioni RAEE (Rifiuti di apparecchiature elettriche ed elettroniche)

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Dieses Produkt unterliegt den Bestimmungen zur Entsorgung von elektrischen und elektronische

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All dimensions are in mm / (in)

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

INVERTER WALL MOUNTED SPLIT TYPE AIR CONDITIONER

COOLING ONLY

R22

WMX20G/MWMX020G
SLV20B/MLCV020B

R410A

5WMX10G/M5WMX010G
5SLX10C/M5LCX010C

5WMX15G/M5WMX015G
5SLX15C/M5LCX015C

5WMX20G/M5WMX020G
5SLX20C/M5LCX020C

5WMX25G/M5WMX025G
5SLX25C/M5LCX025C

Part No.: A08014078756

HEAT PUMP

R410A

5WMX10GR / M5WMX010GR
5SLX10CR / M5LCX010CR

5WMX15GR / M5WMX015GR
5SLX15CR / M5LCX015CR

5WMX20GR / M5WMX020GR
5SLX20CR / M5LCX020CR

5WMX25GR / M5WMX025GR
5SLX25CR / M5LCX025CR

IM-WMXG-0205 (1)-McQuay

1-2

CONTENTS

Before installing the air conditioner unit, please read the following safety precautions carefully.

SAFETY PRECAUTIONS

- Outline And Dimensions page i-iv

- Safety Precautions page 2

- Installation Diagram page 3

- Installation Of The Outdoor Unit page 3

- Installation Of The Indoor Unit page 4

- Refrigerant Piping page 5

- Electrical Wiring Connection page 6

- Special Precautions When Dealing
with R410A Unit page 6

- Vacuuming and Charging page 7

- Indicator Lights page 8

- Air Conditioner Unit Operation page 9

- Operating Range page 9

- Electrostatic Filter page 10

- Auto Random Re-Start Function page 10

- Service And Maintenance page 11

- Troubleshooting page 12

! 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 around 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.

• 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.

• Sharp edges and coil surfaces are potential locations which may cause injury hazards. Avoid from
being in contact with these places.

! 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 hazards 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.

1-3

English

INSTALLATION DIAGRAM

Indoor Unit

Refrigerant Piping

Air Discharge
Nozzle

Air Intake

Drain Hose

Signal Receiver

Indicator

Lights

Air Intake

Grille

Back Housing
ON/OFF Switch

Front Frame

Air Filter

Outdoor Unit

Dimension A B C D
Minimum Distance, 300 1000 300 500

mm (in) (11.8) (39.4) (11.8) (19.7)

INSTALLATION OF THE 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 flow. Please follow the installation
clearances shown in the figure. Select the coolest possible
place where intake air temperature is not greater than the
outside air temperature (maximum 45°C).

Installation clearances

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.

Condensed Water Disposal of Outdoor Unit
(Heat Pump Unit Only)

• There are 2 holes on the base of Outdoor Unit for

condensed water to flow out. Insert the drain elbow to
one of the holes.

• To install the drain elbow, first 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 firmly.

• 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.

Obstacle

Return Air

Service Access

Obstacle

Obstacle

Return Air

Discharge Air

Obstacle

Please remove side
plate when connect­ing the piping and
connecting cord

PUSH & PULL UP

BASE

A

DRAIN

ELBOW

DRAIN

ELBOW

PLUG

A

B

C

D

1-4

INSTALLATION OF THE INDOOR UNIT

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.

Routing Of Piping

Remove the screw holding the front panel.

Maintenance &
Servicing Space

Air Flow
Direction

Higher Than

Eye Level

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
align 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.

Correct

1

2

3

4

5

Piping Routing

Right & Rear Side Routing

Drain hose

Fix with vinyl tape

Unit piping

50.0 mm 50.0 mm

50.0 mm

Hole With Cone Drill

Indoor Side

Outdoor Side

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).

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.

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.

End
Dipped
Into
Water

Water
Leaking

Water
Leaking

Water
Leaking

Wrong

Wrong

Wrong

Drain

Water Drainage

Screw position in the wall

Ø 65.0 mm Hole in the wall

1. Hook the unit onto the installation plate.

Screw position in the wall

72.0

Centre Line

Ø 65.0 mm Hole in the wall

Water
Retention

1-5

English

Piping Length & 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:

REFRIGERANT PIPING

Outdoor Unit

Indoor Unit

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
1/2" 12.70 1.9 1.3
5/8" 15.88 2.2 1.7
3/4" 19.05 2.5 2.0

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.

Pipe Size mm / (in) Torque Nm / (ft - lb)

6.35 (1/4) 18 (13.3)

9.53 (3/8) 42 (31.0)

12.7 (1/2) 55 (40.6)

15.88 (5/8) 65 (48.0)

19.05 (3/4) 78 (57.6)

Indoor Piping

Flare Nut

Flared Tube

Flare Joint

Spanar

Torque Wrench

Cutting Copper Tube

1/4t

Remove Burr Indoor

Copper Tube

Swaging Block

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.

Remark: The refrigerant pre-charged in the outdoor unit

is for piping length up to 7.62 m/25 ft.

Model
Maximum length, m (ft), L
Max. elevation, m (ft), H
Max. number of (90º) bends
Liquid pipe size
Gas pipe size

10 15 20 25

12 (39) 12 (39) 15 (49) 15 (49)

5 (16.4) 5 (16.4) 8 (26.2) 8 (26.2)

10 10 10 10

1/4" 1/4" 1/4" 1/4"

3/8" 1/2" 1/2" 5/8"

1-6

1

2

3

N

L

2

1

3

ELECTRICAL WIRING CONNECTION

Inverter Cooling / Heat Pump 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.

* If the length of the cable is more than 2m, use cable with bigger

size.

• 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.

Wire Clamp

Interconnection

Cable

Power Supply

Cable

Model

Voltage range
Power supply cable size* mm

2

Number of wire
Interconnection cable size* mm

2

Number of wire
Recommended time delay fuse A

220V-240V/ 1Ph/ 50Hz +

10/15

1.5
3

1.5
4

15

20/25

2.5
3

2.5
4

20

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

SPECIAL PRECAUTIONS WHEN DEALING WITH R410A UNIT

R410A is a new HFC refrigerant which does not damage
the ozone layer. The working pressure of this new refriger­ant is 1.6 times higher than conventional refrigerant (R22),
thus proper installation / servicing is essential.

• Never use refrigerant other than R410A in an air condi­tioner which designed to operate with R410A.

• 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.

• To prevent mischarging, the diameter of the service port
on the flare valve is different from that of R22.

• Use tools and materials exclusively for refrigerant
R410A. Tools exclusively for R410A are manifold valve,
charging hose, pressure gauge, gas leak detector, flare
tools, torque wrench, vacuum pump and refrigerant cyl­inder.

• As an R410A air conditioner incurs higher pressure than
R22 units, it is essential to choose the copper pipes cor­rectly. Never use copper pipes thinner than 0.8mm even
though they are available in the market.

• If the refrigerant gas leakage occurs during installation /
servicing, be sure to ventilate fully. If the refrigerant gas
comes into contact with fire, highly hazardous gas may
be produced.

• When installing or removing an air conditioner, do not
allow air or moisture to remain in the refrigerant cycle.

1-7

English

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 center 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 -760mmHg.

Caution

• If the gauge needle does not move to -760mmHg, be
sure to check for gas leaks (using the refrigerant
detector) at flare type connection of the indoor and out­door unit and repair the leak before proceeding to the
next step.

• Close the valve of the charging 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 nut

Refrigerant Piping

Allen key

Suction

valve

Discharge

Valve

Indoor Unit

Outdoor Unit

Liquid side

Gas side

Vacuum
pump

Open

Close

Close

Close

Hi

Low

Model

10 / 15G

10 / 15GR

20G

20GR

25G

25GR

10m/32.8ft 12m/39.4ft 15m/49.2ft

35 65 –
50 90 –
35 65 110
60 110 185
90 165 280

120 220 370

Additional charge in gram (For R22 models)

Model

10 / 15G

10 / 15GR

20G

20GR

25G

25GR

10m/32.8ft 12m/39.4ft 15m/49.2ft

35 60 –
45 80 –
35 60 100
55 100 165
80 150 265

110 200 335

Additional charge in gram (For R410A models)

Additional charge

The refrigerant is pre-charged in the outdoor unit. If the
piping length is less than 7.62m (25ft), then additional charge
after vacuuming is not necessary. If the piping length is more
than 7.62m (25ft), then use the additional charge valve as
indicated in the table.

Open

Open

Suction

Valve

Discharge Valve

Indoor Unit

Outdoor Unit

Liquid side

Gas side

Check
Valve

Close

Hi

Low

Charge operation

This operation must be done by using a gas cylinder and a
precise weighing machine. The additional charge is topped­up 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.

• 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 cylinder
valve.

• Disconnect the service hose from service port. Put back

the service port cap.

1-8

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
signal transmission.

Cooling unit / 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 middle 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.

INDICATOR LIGHTS

LED indicator lights

IR Receiver

LED Indicator Lights for Cooling Unit / Heat Pump
Unit

Sleep Mode Cool Timer Ionizer/NTP

Inverter Unit (MWMX-G)

LED Indicator Lights : Normal Operation And Fault Conditions For Cooling / Heat Pump Unit

Normal Operation / Fault Indication Action

Cool mode –

Heat mode –

Auto mode in Cooling/Heating operation –

Timer on –

Sleep mode on –

Ionizer on –

Fan mode on –

Dry mode on –

Defrost operation –

Indoor temperature sensor loose / short Call your dealer

Coil temperature sensor loose / short Call your dealer

Outdoor temperature sensor loose / short Call your dealer

Compressor overload protection Call your dealer

IPM / PFC error Call your dealer

Outdoor total current trip / DC peak Call your dealer

Compressor overheat / Gas leak Call your dealer

Indoor fan feedback error Call your dealer

Communication error between indoor
and outdoor

Call your dealer

COOL/HEAT

(GREEN/RED)

Orange

Red

Green

ON

ON or OFF Blinking

Red

Green

Green

Green

Green

1-9

English

OPERATING RANGE

Heat Pump Unit

Cooling unit

Temperature Ts °C / °F Th °C / °F

Minimum indoor

19.0 / 66.2 14.0 / 57.2

temperature

Maximum indoor

32.0 / 89.6 23.0 / 73.4

temperature

Minimum outdoor

19.4 / 66.9 –

temperature

Maximum outdoor

46.0 / 114.8 –

temperature

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/3.6°F higher than the set
temperature, the air conditioner will operate under
cooling mode until it reaches within the 2°C/3.6°F range
of difference compared to the set temperature before it
converts to dry mode.

• If the room temperature is within the 2°C/3.6°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 water
drippings.

Overheating protection (for heat pump unit only)

• In case the internal and/or the external temperature is
too high, or that 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.

Temperature Ts °C / °F Th °C / °F

Minimum indoor

16.0 / 60.8 –

temperature

Maximum indoor

30.0 / 86.0 –

temperature

Minimum outdoor

-8.0 / 17.6 -9.0 / 15.8

temperature

Maximum outdoor

24.0 / 75.2 18.0 / 64.4

temperature

Ts: Dry bulb temperature. Th: Wet bulb temperature.

Horizontal

Cooling

25˚C / 77˚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 -1°C/33.8°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.

Turbo function

• If higher cooling or heating is required during operation,

press “Turbo” button on the remote control to increase
the cooling or heating capacity to maximum.

• This function will operate for 15 minutes before it resume

to the actual setting.

• The fan noise may be higher if the unit operates in “Turbo”

mode.

1-10

DUAL ACTION ELECTROSTATIC AIR PURIFYING

AND DEODORIZING FILTER MEDIA AND FILTER FRAME

ACTION 1­ELECTROSTATIC 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 2­DEODORIZING FILTER

Removes unwanted smells and odors in the air and keeps
the room air fresh with activated carbon filter.

! 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.

HOW TO INSTALL

Open the
front frame
grille.

Slide out the original
filters.

Slide back the original
filter.

Insert the dual action
electrostatic and
deodorizing filters
into the slot.

AUTO RANDOM RE-START FUNCTION

If there is a power cut when the unit is operating, it will automatically resume the same operating mode when the power is
restored.

! Caution

Before turning off the power supply, set the remote controller’s ON/OFF switch to the “OFF” position to prevent the
nuisance tripping of the unit.

If this is not done, the unit’s fans will start turning automatically when power resumes, posing a hazard to service
personnel or the user.

1-11

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 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

1 Off the unit.
2 Unscrew the air discharge housing.
3 Flip open the air discharge housing.
4 Clean the blower.
5 Close the air discharge housing and tighten it with screw.

! 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

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.

1-12

When The Unit Is Not To Be Used For An Extended Long 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.

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 long 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.

• In the event that there is any conflict in the interpretation of this manual and any translation of the same in any language,
the English version of this manual shall prevail.

• The manufacturer reserves the right to revise any of the specification and design contain herein at any time without prior
notification.

• En cas de désaccord sur l’interprétation de ce manuel ou une de ses traductions, la version anglaise fera autorité.

• Le fabriquant se réserve le droit de modifier à tout moment et sans préavis la conception et les caractéristiques techniques
des appareils présentés dans ce manuel.

• Im Falle einer widersprüchlichen Auslegung der vorliegenden Anleitung bzw. einer ihrer Übersetzungen gilt die Ausführung
in Englisch.

• Änderungen von Design und technischen Merkmalen der in dieser Anleitung beschriebenen Geräte bleiben dem Hersteller
jederzeit vorbehalten.

• Nel caso ci fossero conflitti nell’interpretazione di questo manuale o delle sue stesse traduzioni in altre lingue, la versione
in lingua inglese prevale.

• Il fabbricante mantiene il diritto di cambiare qualsiasi specificazione e disegno contenuti qui senza precedente notifica.

• En caso de conflicto en la interpretación de este manual, y en su traducción a cualquier idioma, prevalecerá la versión
inglesa.

• El fabricante se reserva el derecho a modificar cualquiera de las especificaciones y diseños contenidos en el presente
manual en cualquier momento y sin notificación previa.

• В случае противоречия перевода данного руководства с другими переводами одного и того же текста,

английский вариант рассматривается как приоритетный.

• Завод-изготовитель оставляет за собой право изменять характеристики и конструкцию в любое время
без предварительного уведомления.