AC INVERTER MULTI SPLITTYPE AIR CONDITIONER

INSTALLATION MANUAL

© 2003 McQuay International

Group: INVERTER

Part Number: A08019025535

Date: MARCH 2003

IM-MSV-0903-McQuay

FOR PIPE HOLE POSITIONIN THE WALLHOLE O 65.0mm

FOR PIPE HOLE POSITIONIN THE WALLHOLE O 65.0mm

CENTERLINE

OUTLINE AND DIMENSIONS

Indoor Unit (WMX-F)

i

Indoor Unit (WMX-G)

INSTALLATIONPLATE

All dimensions are in mm/ (in)

All dimensions are in mm/ (in)

FRONT VIEW

TOP VIEW

SIDE VIEW

A

B

C

FRONT VIEW

TOP VIEW

A

B

C

SIDE VIEW

Dimension10 / 15 F / FR

20 F / FR

I

32(1,3)

48(1,9)

H

12(0,5)

8(0,3)

G

47(1,9)

51(2,0)

F

47(1,9)

99(3,9)

E

278(10,9)

294(11,6)

D

719(28,3)

912(35,9)

C

181(7,1)

200(7,9)

B

291(11,4)

310(12,2)

A

815(32,1)

1060(41,7)

O

172(6,8)

160(6,3)

N

118(4,6)

138(5,4)

M

100(3,9)

160(6,3)

L

342(13,5)

403(15,9)

K

302(11,9)

354(13,9)

J

35(1,4)

43(1,7)

Dimension10 / 15 G / GR

I

56(2,2)

H

8(0,3)

G

124(4,9)

F

185(7,3)

E

246(9,7)

D

590(23,2)

C

198(7,8)

B

260(10,2)

A

899(35,4)

O

132(5,2)

N

128(5,1)

M

50(2,0)

L

495(19,5)

K

419(16,5)

J

50(2,0)

E

D

H

G F

KL

MJ

I IO

N

A

D

K

L

JM

G F

B

ON

IIE

H

Indoor Unit (WMX-G)

All dimensions are in mm/ (in)

FRONT VIEW

TOP VIEW

SIDE VIEW

INSTALLATIONPLATE

A

BC

A

B

D FG

MH

I IO

NM

KL

J

Dimension

20 G / 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)

ii

Outdoor Unit (MSV25A)

iii

Dimension

MSV25A

A

925(36,4)

B

839(33,0)

C

408(16,0)

D

378(14,8)

E

15(0,6)

F

38(1,5)

G

39(1,5)

H

590(23,2)

I

125(4,9)

J

356(14,0)

K

296(11,6)

L

318(12,5)

W

42(1,6)

V

216(8,5)

U

47(1,8)

T

141(5,5)

S

428(16,8)

R

87(3,4)

Q

160(6,3)

P

83(3,2)

O

330(13,0)

N

630(24,8)

M

647(25,4)

All dimensions are in mm/ (in)A

F B

HI I

EDC

E G

KJ

L

OQP R

MN

ST

U

V

WW

WW

WW

W

Dimension

MSV35A

I

390(15,3)

H

26(1,0)

G

44(1,7)

F

488(19,2)

E

20(0,8)

D

448(17,6)

C

141(5,5)

B

746(29,4)

A

1028(40,4)

O

55(2,2)

N

107(4,2)

M

311(12,2)

L

399(15,7)

K

852(33,5)

J

408(16,0)

Outdoor Unit (MSV35A)

All dimensions are in mm/ (in)A

G

BC C

ED

E GF

I L

K

JH

N

M

OO

OO

OO

O

iv

Sharp edges and coil surfaces are potential locations which may cause injuryhazards. Avoid from being in contact with these places.! Caution

This product is subjected to Waste of Electrical and Electronic Equipment Regulations (WEEERegulations). The waste product shall be separately collected by specific collection and treatment centre.Please refer to local authorithy for these centres. This is only applicable to European Union countries.

Ce produit est soumis à la rà érr é é électriques eté éé ê é éé

é éé éé é îître ces centres. Ceciîîest uniquement applicable aux pays de l'Union Européenne.

Questo prodotto è soggetto alle disposizioni RAEE (Rifiuti di apparecchiature elettriche ed elettroniche).à

à locali. Questa disposizioneà è valida solamente i paesidell’U.E.

éctrico y Electrónico en materia deññ á íficoíí

de colecciósolamente aplicable a los países de la Unión Europea.

Dieses Produkt unterliegt den Bestimmungen zur Entsorgung von elektrischen und elektronischenGerää ätesää

üüll bei Ihrer ö ü öändiges Abfall-Amt. Dieserää

Hinweis gilt nur füff r L äischen Union.

Процесс утилизации данного продукта регулируется правилами по утилизацииотходов и (WEEE Regulations).

и, . Эти

правила Европейского .

NOTICE

Eng

lish

Part No.: A08019025535

INSTALLATION MANUAL

INVERTER MULTI SPLIT TYPE AIR CONDITIONER

MODEL

OUTDOOR UNIT

MSV25A / MMSV025A

MSV35A / MMSV035A

INDOOR UNIT

WMX10F / MWMX010F

WMX15F / MWMX015F

WMX20F / MWMX020F

WMX10G / MWMX010G

WMX15G / MWMX015G

WMX20G / MWMX020G

This manual provides the procedures of installation to ensure a safe and good standard of operation for the airconditioner 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.

IM-MSV-0903 (1)-McQuay

1-1

! CAUTIONPlease 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 thefurniture.

• 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-iv- Safety Precautions page 1- Installation Diagram page 2- Installation of Outdoor Unit page 3- Installation of the Indoor Unit page 4- Refrigerant Piping page 5- Electrical Wiring Connection page 7- Ampere Limit Change Method page 8

- Vacuuming and Charging page 10- Indicator Lights page 11- Air Conditioner Unit Operation page 13- Operating Range page 13- Electrostatic filter page 14- Auto Random Re-start Function 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 workaccording 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.

• Before servicing inverter air conditioning unit, switch off the power and wait for 2 - 3 minutes for controller todischarge.

IMPORTANTDO NOT INSTALL OR USE THE AIR CONDITIONER UNIT IN A LAUNDRY ROOM.

1-2

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INSTALLATION DIAGRAM

Indoor Unit Air Filter

Outdoor Unit

Front FrameBack HousingON/OFF Switch

Air IntakeGrille

Indicator Light

Signal Receiver

DrainHouse

OUTDOOR UNIT

INDOOR UNIT

Indoor Unit Combination

Indoor Units with model name WMX10F, WMX15F, WMX20F, WMX10G, WMX15G and WMX20G could be coupled withthis outdoor unit. The following table shows the possible coupling combinations available.

However, there are a total of 21 operation combinations available with this outdoor unit, from one unit to four units. Forfurther details on operation combinations, total capacity and other technical specifications, please refer to the technical manual.

No. Coupling Combinations (WMX)

1 10 + 10 + 10 + 10

2 10 + 10 + 10 + 15

3 10 + 10 + 10 + 20

4 10 + 10 + 15 + 15

5 10 + 10 + 15 + 20

6 10 + 15 + 15 + 15

7 15 + 15 + 15 + 15

Return Air

Air Discharge Nozzle

1-3

The outdoor unit must be installed in such a way, so as to prevent short circuit of the hot discharged air or obstruction to thesmooth air flow. Please follow the installation clearance shown in the figures on the right. Select the coolest possible placewhere intake air temperature is not greater than the outside air temperature (maximum 45°C/113°F). Ensure that the unit isinstalled 1 or 2 meter away from other electronic devices like television or radio to prevent interference.

Note: If there is any obstacle higher than 2m (6.56ft), or if there is any obstruction at the upper part of the unit, please allowmore space than the figure indicated in the table shown below.

Before installing the piping and connecting rod, please remove the access panel and plastic valve plate cover or service panelfor easy access and safety. Refer to figures shown below.

INSTALLATION OF OUTDOOR UNIT

PLEASEREMOVESERVICEPANEL

PLEASEREMOVEACCESS PANEL& PLASTICVALVE COVERPLATE WHENCONNECTINGTHE PIPINGANDCONNECTINGCORD.

PUSH & PULL UP

Dimension AMinimum 300 1000Distance (mm) (11.8) (39.4)

Installation Clearance

B C D300

(11.8)500

(19.7)

C DA B

SER

VIC

E S

PAC

E

RE

TU

RN

AIR

OB

STA

CL

E

AIR

DIS

CH

AR

GE

OB

STA

CL

E

RE

TU

RN

AIR

OB

STA

CL

E

OB

STA

CL

E

1-4

Eng

lish

Hole With Cone Drill

Indoor Side Outdoor Side

INSTALLATION OF THE INDOOR UNIT

Mounting Installation PlateEnsure that the wall is strong enough to withstand the weightof the unit. Otherwise, it is necessary to reinforce the wallwith plates, beams or pillars.Use the level gauge for horizontal mounting, and fix it with4 suitable screws.In case the rear piping draws out, drill a hole 65mm in diam-eter with a cone drill, slightly lower on the outside wall (seefigure).

Mount The Unit Onto The Installation PlateHook the indoor unit onto the upper portion of theinstallation plate (Engage the two hooks at the rear top ofthe indoor unit with the upper edge of the installation plate).Ensure that the hooks are properly seated on theinstallation plate by moving it to the left and right.

Water Drainage PipingThe indoor drain pipe must be in a downward gradient forsmooth drainage. Avoid situations that are likely to causewater to leak.

EndDippedIntoWater

WaterLeaking

WaterLeaking

WaterLeaking

The indoor unit must be installed in such a way so as toprevent short circuit of the cool discharged air with the hotreturn air. Please follow the installation clearance shown inthe figure. Do not place the indoor unit where there could bedirect sunlight shining on it. Also, this location must besuitable for piping and drainage, and be away from doors orwindows.

Routing Of Piping

Remove the screw holding the front panel.

The refrigerant piping can be routed to the unit in anumber of ways (left or right from the back of the unit), byusing the cut-out holes on the casing of the unit (see figure).Bend the pipes carefully to the required position in order toaligned it with the holes. For the right hand and rear sideout, hold the bottom of the piping and then position it to therequired direction (see figure). The condensation drain hosecan be taped to the pipes.

Wrong Wrong WrongCorrect

Drain

Water Drainage

12 3

4

5

Piping Routing

Right & Rear Side Routing

Screw position in the wall

Ø 65.0 mm Hole in the wall

Maintenance &Servicing Space

Air FlowDirection

Hig

her T

han

Eye

Leve

l

50.0 mm

Drain hose

Fix with vinyl tape

Unit piping

1. Hook the unit onto the installation plate.

50.0 mm

Screw position in the wall

72.0

Centre Line

Ø 65.0 mm Hole in the wall

1-5

REFRIGERANT PIPING

Piping Length & ElevationIf the pipe is too long, both capacity and reliability of the unit will drop. As the number of bends increases, resistance to theflow 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.

Individual indoor unit can have a maximum length of 12m (39.4ft) to 15m (49.2ft), maximum elevation of 5m (16.4ft) to 8m(26.3ft) and maximum number of bends of 10, however, total pipe length must not exceed 60 m (196.8ft).

Remark: The refrigerant pre-charged in the outdoor unit is for piping length up to 60 m (196.8ft).

Coupling Model WMX10 WMX15 WMX20

Max. Length, L (m / ft) 12 / 39.4 12 / 39.4 15 / 49.2L

1 + L

2 + L

3 + L

4 (Total 60 m / 196.8 ft maximum)Max. Elevation, H (m / ft) 5 / 16.4 5 / 16.4 8 / 26.2Max. Number of Bends 10 10 10Liquid Pipe Size 1/4" 1/4" 1/4"Gas Pipe Size 3/8" 1/2" 5/8"

L4

L3

L2

L1

OUTDOOR UNIT

INDOOR UNIT

VERTICALHEIGHTDIFFERENCEMAX. H

1-6

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Ø Tube, D A (mm)

Inch mm Imperial Rigid

1/4" 6.35 1.3 0.7

3/8" 9.52 1.6 1.01/2" 12.70 1.9 1.3

5/8" 15.88 2.2 1.73/4" 19.05 2.5 2.0

Piping Works

• Do not use contaminated or damaged copper tubing. Donot remove plastic, rubber plugs and brass nuts from thevalves, fittings, tubings and coils until you are ready toconnect suction or liquid line into valves or fittings.

• If any brazing work is required, ensure that the nitrogengas is passed through coil and joints while the brazingwork is being done. This will eliminate soot formationon 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 metalchips from entering the pipe.

• Insert the flare nuts, mounted on the connection parts ofboth the indoor unit and outdoor unit onto the copperpipes.

• Flare the pipe with extra length above the flaring tool asshown in the table below.

• The flared edge must be even and not cracked orscratched.

Piping Connection To The Units

• The outdoor unit is equipped with four sets of flare joints.Refer to table below for flare joint size and location.

• In the case where the gas pipe from the indoor unit doesnot match the outdoor flare joints, four different flarejoint connectors are provided. The connector should beconnected as shown in figure.

• Align the center of the piping and tighten the flare nutsufficiently with fingers.

• Finally, tighten the flare nut with the torque wrench untilthe wrench clicks.

Cutting copper tube

1/4t

Remove burr Indoor

Position Liquid Pipe Size Gas Pipe Size

MSV25A MSV35A

A 1/4" 3/8" 3/8"B 1/4" 3/8" 3/8"C 1/4" 1/2" 1/2"D 1/4" 1/2" 5/8"

No. Flare Joint Connectors 1 5/8" to 1/2" Connectors 2 3/8" to 1/2" Connectors 3 1/2" to 3/8" Connectors

4 1/2" to 5/8" Connectors

FLARE JOINT CONNECTOR FLARE TUBE

INDOOR PIPING FLARE NUT

SPANNER TORQUE WRENCH

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

6.35 (1/4) 18 (13.3)9.53 (3/8) 42 (31.0)

12.70 (1/2) 55 (40.6)15.88 (5/8) 65 (48.0)19.05 (3/4) 78 (57.6)

Copper tube

Swaging block

PIPE CONNECTION

INDOOR UNIT D

INDOOR UNIT C

INDOOR UNIT B

INDOOR UNIT A

1-7

ELECTRICAL WIRING CONNECTION

Cooling UnitIMPORTANT : 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 to the type of installation and conductorsused.

INDOOR UNIT DTERMINAL BLOCK

INDOOR UNIT CTERMINAL BLOCK

INDOOR UNIT BTERMINAL BLOCK

INDOOR UNIT ATERMINAL BLOCK

1

2

3

N

L

1

2

3

N

L

1

2

3

N

L

1

2

3

N

L

N

L

3

N

L

3

N

L

3

N

L

3

N

L

D

C

B

A

POW

ERSU

PPLY

• All wires must be firmly connected.• All wires must not touch the refrigerant piping, compres-

sor 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 andthe cable tie (push releasable) at the indoor unit and out-door unit respectively as shown in the figures.

• The power supply cord must be equivalent to H05RN-F(245IEC57) which is the minimum requirement.

MAIN CONTROL BOARD EARTH WIREFAN EARTH WIRE

POWER SUPPLYCABLE

CABLE TIE(PUSH RELEASABLE)

INTERCONNECTIONCABLE

There must be a double pole switch with aminimum 3 mm contact gap and fuse/circuit breaker as recommended in thefixed installation circuit.

1-8

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Model WMX10/15 WMX20

Voltage range 220-240V/1Ph/50Hz + !Power supply cable size* mm2 3.0 4.0

Number of wires 3 3

Recommended time delay fuse for O/D unit 30

Indoor coupling models WMX10/15/20GInterconnection cable size mm2 1.5

Number of wires 4

AMPERE LIMIT CHANGE METHOD

WARNING !Do not attemp to adjust the “Current Limit Switch” yourself. If there is a need to meet HDB requirement or local authorities,kindly contact our local authorized dealers.

Wire Clamp

InterconnectionCable

Power SupplyCable

• The table above shows the electrical wire sizing for different connection cables. If the length of the cable is more than 2m(6.65ft), use cable with bigger size.

• The figures shown in the table are for information purpose only. They should be checked and selected to comply with thelocal/national codes of regulations. This is also to the type of installation and conductors used.

1-9

Current Limit Switch Setting

• The current limit requirement set by certain countries can be activated by the “Current Limit Switch”, placed at theoutdoor unit p.c.board, as shown on the illustration.

• Before adjusting the “Current Limit Switch”, be sure to turn off the main power supply. Wait until the LED light on thep.c.board is turned off then only is safe to adjust the switch.

• The current limit settings on the switch are shown on the table below.

Current limit Switch Position

Current Limit

MSV25A MSV35A

No change11 A

(Default Setting)

8.5 A

17 A

23 A(Default Setting)

11 A

17 A

1 2 3

ON

1 2 3

ON

1 2 3

ON

1 2 3

ON

1 2 3

ON

1-10

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➝

VACUUMING AND CHARGING

Purging the piping and the indoor unitExcept for the outdoor unit which is pre-charged withrefrigerant R22, the indoor unit and the refrigerant connectionpipes must be air-purged because the air containing moisturethat remains in the refrigerant cycle may cause malfunctionof the compressor.

Service Port Outdoor Unit3 Ways Valve

Flare UnitRefrigerant Piping

Charge operation

This operation must be done by using a cylinder and a pre-cise weighing machine. The additional charge is topped-up into the outdoor unit using the suction valve via the ser-vice 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 andclose the high pressure side of the gauge. Purge the airfrom the service hose.

• Start the air conditioner unit.• Open the cylinder and low pressure charging valve.• When the required refrigerant quantity is pumped into

the unit, close the low pressure side and the cylindervalve.

• Disconnect the service hose from service port. Put backthe service port cap.

Allen Key

Open

Open

SuctionValve

DischargeValve

Indoor Unit Outdoor UnitLiquid side

Gas side

CheckValve

Close

Hi

Low

SuctionValve

DischargeValve

Indoor Unit Outdoor UnitLiquid side

Gas side

Vacuumpump

Open

Close

Close

CloseHi

Low

Make sure all pipes are connected securely to the outdoorand indoor valves.

Remove the caps from the flare valves and the service ports(or ball valves). Take note that there are a total of fourservice ports for MSV25A and two service ports forMSV35A.

➝

Connect the centre of the charging gauge to the vacuumpump.

➝

Starting from the bottom 3-way valve (labeled A),connect the charging gaugeto the 3-way valve’s serviceport. (There are a total offour 3-way valves).

➝ ➝

Connect the charging gaugeto the suction (gas side) ballvalve’s service port.

Start the vacuum pump. Evacuate for approximately 30minutes. The evacuation time varies with different vacuumpump capacity. Confirm that the charging gauge needle hasmoved towards -760mmHg.

➝

Proceed to the next 3-wayvalve and repeat the stepabove for the rest of the3-way valves.

➝

(MSV25A) (MSV35A)

CautionIf the gauge needle does not move towards -760mmHg,be sure to check for gas leaks (using the refrigerantdetector) at flare type connection of the indoor andoutdoor unit and repair the leak before proceeding tothe next step.

Close the valve of the charging gauge and stop the vacuumpump.

Open the suction valve (3-way) and liquid valve (2-way) in anti-clockwisedirection with 4mm key forhexagon sacked screw.

➝ ➝

Open the suction and liquidball valves in anti-clockwisedirection with pliers.

➝

Additional chargeThe refrigerant is pre-charged in the outdoor unit for maximum piping length. Therefore, no additional charge is required foradditional piping length.

➝ ➝➝

1-11

INDICATOR LIGHTS

IR signal receiver

When an infrared remote control operating signal has been transmitted, the signal receiver on the indoor unit will makea <beep> sound to confirm acceptance of the signal transmission. The table shows the LED indicator lights for theindoor air conditioner unit under normal operation and fault conditions. The LED indicator lights are located at thebottom right side of the air conditioner unit for WMX-F series and at the middle of the air conditioner unit for WMX-G series.

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

Action

–

–

–

Call your dealer

Call your dealer

Call your dealer

Call your dealer

Call your dealer

Call your dealer

Call your dealer

Call your dealer

Operation / Fault Indication

Timer on.

Sleep mode on.

Dry mode.

Compressor overload protection.

Indoor temperature sensors contact loose / short.

Outdoor temperature & current sensors contact loose / short.

Gas leak / compressor overheat.

Communication error between indoor and outdoor.

Inverter error / PFC error.

Outdoor total current trip / DC peak.

Indoor fan feedback error.

LED Indicator Lights

Dry mode

Power ONTimer

LED Indicator Lights for Cooling Unit

BlinkingON or OFFON

Sleep mode

Inverter Cooling Unit (WMX-F)

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Inverter Cooling Unit (WMX-G) LED Indicator Lights for Cooling / Heat Pump Unit

Sleep Mode

LED Indicator Lights : Normal Operationg and Fault Conditions for Cooling / Heat Pump Unit

LED indicator lights

IR Receiver

Cool Timer Ionizer

Normal Operation / Fault Indication Action

Cool mode –

Sleep mode on –

Timer on –

Ionizer 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 outdoorCall your dealer

Green

ON ON or OFF Blinking

SleepMode

Cool Timer Ionizer

Green/ Red

Green/ Red

Green/ Red

Red

Red

Green

Yellow

Green

Green

Green

Green

1-13

AIR CONDITIONER UNIT OPERATION

Dry mode

• When the air humidity is high, the unit can operate in drymode. Press <MODE> button and choose <DRY>.

• If the room temperature is 2°C/35.6°F higher than the settemperature, the air conditioner will operate under coolingmode until it reaches within the 2°C/35.6°F range ofdifference compared to the set temperature before itconverts to dry mode.

• If the room temperature is within the 2°C/35.6°F range ofdifference compared to the set temperature, it willdirectly operate under dry mode.

• The indoor fan will operate at super low speed under drymode.

Horizontal Air Flow Control

• For more effective air circulation, you can manually ad-just the air discharge grille to the left or right.

• During cool mode operation and dry mode operation, donot direct the air discharge louver downwards for too long.If operating continues in this way, condensation may oc-cur on the louver, thus resulting in drippings.

Frost prevention

• When the air filter is dirty, the evaporating temperaturewill decrease and eventually cause frosting.

• When this happens, the compressor will reduce its runningspeed to prevent freezing. If the coil temperature is stillvery low, the compressor will stop.

Fan speed and rated cooling capacity

• The rated cooling capacity is provided at the maximumfan speed.

• The cooling capacity is lower when the unit is operating atMEDIUM and LOW fan speed.

Turbo function

• If higher cooling or heating is required during operation,press "Turbo" button on the remote control to increase thecooling or heating capacity to maximum.

• This function will operate for 15 minutes before it resumeto the actual setting.

• The fan noise may be higher if the unit operates in "Turbo"mode.

OPERATING RANGE

Cooling Unit

Temperature Ts °C / °F Th °C / °F

Minimum indoor temperature 19.0 / 66.2 14.0 / 57.2

Maximum indoor temperature 32.0 / 89.6 23.0 / 73.4

Minimum outdoor temperature 19.4 / 66.92 -

Maximum outdoor temperature 46.0 / 114.8 -

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

Horizontal

Coo

ling

Dry

25˚C / 77˚F

1-14

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! 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 resultin fire hazards.

! CAUTIONBefore turning off the power supply, set the remote controller's ON/OFF switch to the "OFF" position to prevent thenuisance tripping of the unit.If this is not done, the unit's fans will start turning automatically when power resumes, posing a hazard to servicepersonnel or the user.

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

AUTO RANDOM RE-START FUNCTION

! CAUTION

1. The electrostatic air purifying and deodorizing filtershould be replaced once every 6 months or when thefilter changes color to brownish, whichever is sooner.

2. Used dusty filters should be disposed and shouldn't bereused, even if it has been cleaned and washed.

3. The filter is a consumable part which you can purchasefrom your air conditioner dealer.

4. Use the new filter immediately once it has been takenout from its sealed packing. Do not unpack the newfilter too early before it is actually used as this maydecrease its deodorizing effect.

ELECTROSTATIC FILTER

DUAL ACTION ELECTROSTATIC AIR PURIFYINGAND DEODORIZING FILTER MEDIA AND FILTER FRAME

ACTION 1-ELECTROSTATIC AIR PURIFYING FILTER

Removes microscopic dust, smoke and small invisibleparticles to keep the room air clean with pre-chargedelectrostatic polypropylene filter.

ACTION 2-DEODORIZING FILTER

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

HOW TO INSTALL

Open thefront framegrille.

Slide out the originalfilters.

Slide back the originalfilter.

Insert the dual actionelectrostatic anddeodorizing filtersinto the slot.

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WHEN THE UNIT IS NOT USED FOR AN EXTENDED PERIOD OF TIME

Operate the unit for 2 hourswith the following setting.

Operating mode : coolTemperature : 30°C

Remove the power plug.If you are using an independentelectric circuit for your unit,cut off the circuit.Remove the batteries in theremote control.

SERVICE AND MAINTENANCE

! CAUTIONDo 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.

Maintenance Procedures

1. Remove any dust adhering to the filter by using a vacuum cleaner orwash in lukewarm water (below 40°C) 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 softcloth soaked in lukewarm water (below 40°C) and a neutraldetergent solution.

2. Do not use gasoline, volatile substances or chemicals to clean theindoor unit.

Period

At least onceevery 2 weeks.

More frequently ifnecessary.

At least onceevery 2 weeks.

More frequently ifnecessary.

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.

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If there is any malfunction of the air conditioner unit detected, please switch off the main power supply immediatelybefore proceeding with the following troubleshooting procedures as safety precautions.

The followings are some common fault conditions and simple troubleshooting tips. If encounter any faulty conditions whichare not listed, please contact your nearest local dealer or service maintenance. Do not attemp to troubleshoot the unit yourself.

TROUBLESHOOTING

Possible Causes / Corrective Actions

• The air conditioner unit has a 3 minutes restart protection.Please wait for the unit to restart by leaving the main poweron.

• Protection against frequent starting.• Wait for 3 or 4 minutes for the compressor to start operating

by itself.

• The air filter is dirty.• The doors or 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 high

enough.

• Odour may be caused by cigarrettes, smoke particles, perfumeand others, which might have adhered onto the coil.

• Contact the nearest dealer for coil cleaning.

• This is caused by air humidity after an extended period ofoperation.

• The set temperature is too low, increase the temperature settingand operate the unit at high fan speed.

• Switch off unit and call dealer. This might be due to tiltedinstallation.

• Refrigerant fluid flowing into the evaporator coil.

• Check the fault indication listed under section INDICATORLIGHTS.

• If LED display indicates defrost operation, ignore it. Thisshows that the outdoor unit is defrosting the ice at the outdoorunit.

• For other LED display, follow the COMPRESSOR STOPPEDTROUBLESHOOTING INSTRUCTIONS at next section.

• Power failure or fuse needs to be replaced. Check powersupply.

• The main power plug is disconnected or the circuit breakingis turned off.

• It is possible that the delay timer has been set incorrectly.• If the problem persist after all these verifications, follow the

COMPRESSOR STOPPED TROUBLESHOOTINGINSTRUCTIONS at next section.

Fault Conditions

The air conditioner unit will not start straightaway after a power failure or restart of unit.

The compressor does not operate 3 minutes afterthe air conditioner unit is started.

The air flow is too slow or room cannot becooled sufficiently.

Discharge air flow has bad odour.

Condensation on the front air grille of the indoorunit.

Water flowing out from the air conditioner unit.

Hissing air flow sound from the air conditionerunit during operation.

The indoor unit’s LED indication keeps blinking.

The outdoor unit will not operate and the indoorunit’s LED indication does not blink.

No.

1.

2.

3.

4.

5.

6.

7.

8.

9.

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1 Outdoor Ambient Sensor Error Check ambient sensor wire and connection

2 Outdoor Coil Sensor Error Check coil sensor wire and connection

3 Outdoor Discharge Sensor Error / Check discharge sensor wire and connection /Compressor Overheat Indication Not enough refrigerant / Indoor overload / Outdoor fan

not functioning

4 DC Compressor Feedback Call local dealer

5 Communication Error Check Interconnection communication wire

6 Over Current Call local dealer

7 No Load Check compressor wire and connection

8 Over / Under Voltage Check power supply

9 DC Compressor Start Failure Call local dealer

10 Cooling Overload Check whether outdoor unit is blocked or not

11 Defrost Wait till defrost is over then restart

12 IPM Protection Check IPM

13 EEPROM Read Error Change EEPROM

14 EEPROM Write Error Change EEPROM

15 DC Fan Motor Feedback Error Check fan motor wire connection

16 AC Peak Current Error Call local dealer

17 Outdoor Suction Sensor Error Check suction sensor wire and connection

19 DC Compressor Speed Control Error Call local dealer

21 Outdoor Suction A Sensor Error Check A suction sensor wire and connection

22 Outdoor Suction B Sensor Error Check B suction sensor wire and connection

23 Outdoor Suction C Sensor Error Check C suction sensor wire and connection

24 Outdoor Suction D Sensor Error Check D suction sensor wire and connection

31 Indoor A Communication Error Check Interconnection communication wire to Indoor A

32 Indoor B Communication Error Check Interconnection communication wire to Indoor B

33 Indoor C Communication Error Check Interconnection communication wire to Indoor C

34 Indoor D Communication Error Check Interconnection communication wire to Indoor D

Compressor Stopped Troubleshooting Instructions

DO NOT TOUCH ANY OF THEWIRES INSIDE THE UNIT!

Count the number of blinksindicated by the LED

* If the problem still persist, contact your local dealer straight away.

Notice the Yellow LED on the P.C. Board

Open up the Outdoor Unit’s Top Panel or Service Panel

Keep the Main Power Supply ON

Blink Fault Indication Corrective Action

➝➝

➝

➝

➝

10

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Normal Running Mode Condition11

If the air conditioner unit has no faulty indications and the compressor is running at normal mode, the outdoor P.C.Board’s LED indication will blink at a slower paste. The table below shows the significant meaning of differentrunning mode and limitation for this air conditioner unit.

One must not attemp to see the LED indication blinking unless instructed to do so.

Blinks Blinking Indication1 Normal Running, with no limitation

2 Voltage Limit3 Cooling unit : Outdoor Coil Temperature Limit4 Total Current Limit5 Discharge Temperature Limit6 Cooling unit : Indoor Coil Temperature Limit7 Indoor Fan Control8 Outdoor Frequency Adjustment

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MEMO

• 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 priornotification.

• 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 techniquesdes appareils présentés dans ce manuel.

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

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

• Nel caso ci fossero conflitti nell’interpretazione di questo manuale o delle sue stesse traduzioni in altre lingue, la versionein 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 versióninglesa.

• El fabricante se reserva el derecho a modificar cualquiera de las especificaciones y diseños contenidos en el presentemanual 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 времябез предварительного уведомления.