INVENTOR L4VI32-09, L4VO32-09, L4VI32-12, L4VO32-12 Service Manual

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• SERVICE MANUAL

ENGLISH

WALL MOUNTED UNIT

AIR CONDITIONING SYSTEMS

MODELS:

L4VI32-09/L4VO32-09 L4VI32-12/L4VO32-12

Service Manual

Table of Contents

Service Manual

Table of Contents

Part

Ⅰ

: Technical Information

.......................................................................1

1. Summary

......................................................................................................................1

..........................................................................................................2

...........................................................................................................2

2.2 Operation Characteristic Curve ........................................................................................6

2.3 Capacity Variation Ratio According to Temperature ....................................................... ..6

2.4 Cooling and Heating Data Sheet in Rated Frequency .....................................................7

2.5 Noise Curve ......................................................................................................................7

3. Outline Dimension Diagram

........................................................................8

3.1 Indoor Unit ........................................................................................................................8

3.2 Outdoor Unit .....................................................................................................................9

4. Refrigerant System Diagram

....................................................................10

5. Electrical Part

.........................................................................................................11

5.1 Wiring Diagram ...............................................................................................................11

5.2 PCB Printed Diagram .....................................................................................................13

6. Function and Control

......................................................................................15

6.1 Remote Controller Introduction .....................................................................................15

6.2 Preparation before operation..........................................................................................15

6.3 Introduction of operation function ..................................................................................15

6.4 Introduction of special functions ....................................................................................17

6.5 Brief Description of Modes and Functions......................................................................19

Part

Ⅱ

: Installation and Maintenance

.................................................24

7. Notes for Installation and Maintenance

..........................................24

8. Installation

................................................................................................................28

8.1 Installation Dimension Diagram ......................................................................................28

8.2 Installation Parts-checking ............................................................................................30

8.3 Selection of Installation Location ....................................................................................30

8.4 Requirements for electric connection .............................................................................30

8.5 Installation of Indoor Unit ................................................................................................30

8.6 Installation of Outdoor Unit .............................................................................................33

8.7 Vacuum Pumping and Leak Detection ...........................................................................34

8.8 Check after Installation and Test Operation ...................................................................34

Service Manual

Table of contents

Service Manual

9. Maintenance

............................................................................................................74

9.1 Error Code List ...............................................................................................................74

9.2 Procedure of Troubleshooting ........................................................................................82

9.3 Troubleshooting for Normal Malfunction .........................................................................97

10. Exploded View and Parts List

..............................................................99

10.1 Indoor Unit ....................................................................................................................99

10.2 Outdoor Unit ...............................................................................................................109

11. Removal Procedure

..................................................................................... 116

11.1 Removal Procedure of Indoor Unit ............................................................................. 116

11.2 Removal Procedure of Outdoor Unit ..........................................................................126

Appendix:

......................................................................................................................141

Appendix 1: Reference Sheet of Celsius and Fahrenheit ..................................................141

Appendix 2: Conguration of Connection Pipe ...................................................................141

Appendix 3: Pipe Expanding Method .................................................................................142

Appendix 4: List of Resistance for Temperature Sensor ....................................................143

Technical Information

Service Manual

Part

Ⅰ

: Technical Information

1. Summary

Indoor Unit

L4VI32-09, L4VI32-12

Outdoor Unit

L4VO32-09 L4VO32-12

Remote Controller

YAN1F1

Technical Information

Service Manual

Parameter Unit Value

Model L4VI32-09

Power

Supply

Rated Voltage V~ 220-240 Rated Frequency Hz 50

Phases 1 Power Supply Mode Outdoor Cooling Capacity(Min~Max) W 2600(500~3350) Heating Capacity(Min~Max) W 2800(500~3500) Cooling Power Input(Min~Max) W 805(160~1400) Heating Power Input(Min~Max) W 755(200~1500) Cooling Current Input A 3.9 Heating Current Input A 3.4 Rated Input W 1500 Rated Current A 6.3 Air Flow Volume(SH/H/M//L/SL) m

/h 560/490/430/330/Dehumidifying Volume L/h 0.8 EER W/W 3.23 COP W/W 3.71 SEER W/W 6.1 SCOP(Average/Warmer/Colder) W/W 4.0/5.1/3.2 Application Area m

12-18

Indoor

Unit

Indoor Unit Model L4VI32-09 Fan Type Fan Diameter Length(DXL) mm Ф98X580 Cooling Speed(SH/H/M//L/SL) r/min 1300/1200/1050/800/Heating Speed(SH/H/M//L/SL) r/min 1300/1200/1050/900/Fan Motor Power Output W 20 Fan Motor RLA A 0.215 Fan Motor Capacitor μF 1 Evaporator Form Aluminum Fin-copper Tube Evaporator Pipe Diameter mm Ф5

mm 2-1.4 Evaporator Coil Length (LXDXW) mm 584X22.8X266.7 Swing Motor Model MP24AA Swing Motor Power Output W 1.5 Fuse Current A 3.15 Sound Pressure Level(SH/H/M//L/ SL)

dB (A) 39/36/32/28/-

Sound Power Level(SH/H/M//L/SL) dB (A) 55/52/44/38/Dimension (WXHXD) mm 790X275X200 Dimension of Carton Box (LXWXH) mm 863X268X352 Dimension of Package(LXWXH) mm 866X271X367 Net Weight kg 9 Gross Weight kg 11

Technical Information

Service Manual

The above data is subject to change without notice. Please refer to the nameplate of the unit.

Outdoor

Unit

Outdoor Unit Model L4VI32-12

Compressor Manufacturer

ZHUHAI LANDA COMPRESSOR

CO.,LTD Compressor Model QXF-B096zE190A Compressor Oil FW68DA Compressor Type Rotary Compressor LRA. A 20.00 Compressor RLA A 4.21 Compressor Power Input W 943

Compressor Overload Protector

1NT11L-6233 HPC115/95U1

KSD115ºC Throttling Method Capillary Set Temperature Range ºC 16~30 Cooling Operation Ambient Temperature Range

ºC -15~43

Heating Operation Ambient Temperature Range

ºC -15~24

Condenser Form Aluminum Fin-copper Tube Condenser Pipe Diameter mm Φ7

mm 1-1.4

Condenser Coil Length (LXDXW) mm 710X19.05X508 Fan Motor Speed rpm 900 Fan Motor Power Output W 30 Fan Motor RLA A 0.36 Fan Motor Capacitor μF / Outdoor Unit Air Flow Volume m

/h 1600

Fan Type Fan Diameter mm Φ400 Defrosting Method Automatic Defrosting Climate Type T1 Isolation I Moisture Protection IPX4 Permissible Excessive Operating Pressure for the Discharge Side

MPa 4.3

Permissible Excessive Operating Pressure for the Suction Side

MPa 2.5

Sound Pressure Level (H/M/L) dB (A) 52/-/Sound Power Level (H/M/L) dB (A) 61/-/Dimension(WXHXD) mm 782X540X320 Dimension of Carton Box (LXWXH) mm 820X355X580 Dimension of Package(LXWXH) mm 823X358X595 Net Weight kg 29.5 Gross Weight kg 32 Refrigerant R32 Refrigerant Charge kg 0.6

Connection

Pipe

Connection Pipe Length m 5 Connection Pipe Gas Additional Charge g/m 20 Outer Diameter Liquid Pipe mm Φ6 Outer Diameter Gas Pipe mm Φ9.52 Max Distance Height m 10 Max Distance Length m 19 Note: The connection pipe applies metric diameter.

Technical Information

Service Manual

Parameter Unit Value

Model L4VI32-12

Power

Supply

Rated Voltage V~ 220-240 Rated Frequency Hz 50

Phases 1 Power Supply Mode Outdoor Cooling Capacity(Min~Max) W 3500(800~3700) Heating Capacity(Min~Max) W 3670(900~380) Cooling Power Input(Min~Max) W 1085(220~1400) Heating Power Input(Min~Max) W 990(220~1500) Cooling Current Input A 5.0 Heating Current Input A 4.5 Rated Input W 1500 Rated Current A 7.2 Air Flow Volume(SH/H/M//L/SL) m

/h 680/590/490/420/Dehumidifying Volume L/h 1.4 EER W/W 3.26 COP W/W 3.71 SEER W/W 6.1 SCOP(Average/Warmer/Colder) W/W 4.0/5.1/3.4 Application Area m

16-24

Indoor

Unit

Indoor Unit Model L4VI32-12

Fan Type Fan Diameter Length(DXL) mm Φ98X633.5 Cooling Speed(SH/H/M//L/SL) r/min 1350/1200/1050/850/Heating Speed(SH/H/M//L/SL) r/min 1300/1150/1000/900/Fan Motor Power Output W 20 Fan Motor RLA A 0.31 Fan Motor Capacitor μF 1.5 Evaporator Form Aluminum Fin-copper Tube Evaporator Pipe Diameter mm Ф5

mm 2-1.5 Evaporator Coil Length (LXDXW) mm 635X22.8X306.3 Swing Motor Model MP24BA Swing Motor Power Output W 2 Fuse Current A 3.15 Sound Pressure Level(SH/H/M//L/SL) dB (A) 42/38/34/31/Sound Power Level(SH/H/M//L/SL) dB (A) 56/52/48/45/Dimension (WXHXD) mm 845X289X209 Dimension of Carton Box (LXWXH) mm 918X278X364 Dimension of Package(LXWXH) mm 921X281X379 Net Weight kg 10.5 Gross Weight kg 12.5

Technical Information

Service Manual

The above data is subject to change without notice. Please refer to the nameplate of the unit.

Outdoor

Unit

Outdoor Unit Model L4VO32-12 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO., LTD Compressor Model QXF-B096zE190A Compressor Oil FW68DA Compressor Type Rotary Compressor LRA. A 20 Compressor RLA A 4.21 Compressor Power Input W 943 Compressor Overload Protector 1NT11L-6233 HPC115/95U1 KSD115ºC Throttling Method Capillary Set Temperature Range ºC 16~30 Cooling Operation Ambient Temperature Range

ºC -15~43

Heating Operation Ambient Temperature Range

ºC -15~24

Condenser Form Aluminum Fin-copper Tube Condenser Pipe Diameter mm Φ7.94

mm 1-1.4

Condenser Coil Length (LXDXW) mm 731X19.05X550 Fan Motor Speed rpm 900 Fan Motor Power Output W 30 Fan Motor RLA A 0.36 Fan Motor Capacitor μF / Outdoor Unit Air Flow Volume m

/h 2200

Fan Type Fan Diameter mm Φ438 Defrosting Method Automatic Defrosting Climate Type T1 Isolation I Moisture Protection IPX4 Permissible Excessive Operating Pressure for the Discharge Side

MPa 4.3

Permissible Excessive Operating Pressure for the Suction Side

MPa 2.5

Sound Pressure Level (H/M/L) dB (A) 53/-/Sound Power Level (H/M/L) dB (A) 62/-/Dimension(WXHXD) mm 848X596X320 Dimension of Carton Box (LXWXH) mm 878X360X630 Dimension of Package(LXWXH) mm 881X363X645 Net Weight kg 31 Gross Weight kg 34 Refrigerant R32 Refrigerant Charge kg 0.7

Connection

Pipe

Connection Pipe Length m 5 Connection Pipe Gas Additional Charge g/m 20 Outer Diameter Liquid Pipe mm Φ6 Outer Diameter Gas Pipe mm Φ9.52 Max Distance Height m 10 Max Distance Length m 20 Note: The connection pipe applies metric diameter.

Technical Information

Service Manual

2.2 Operation Characteristic Curve

2.3 Capacity Variation Ratio According to Temperature

gnitaeHgnilooC

100

110

120

130

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46

Capacity ratio(%)

Outdoor temp. (°C)

Capacity ratio(

–15 –10 –5

110

100

0 5 7 10

Conditions Indoor:DB20°C Indoor air flow:Super High Pipe length:5m

Outdoor temp.(°C)

Condition Indoor:DB27°C WB19°C Indoor air flow:

High

Pipe length:5m

Heating operation ambient temperature range is -15ºC~24ºC

0 10 20 30 40 50 60 70 90 0 10 20 30 40 50 60 70 80 90 100

120

110

Compressor speed (rps)

)A(tnerruC

Compressor speed (rps)

)A(tnerruC

220V

230V

240V

220V

230V

240V

Conditions Indoor: DB27°C/WB19°C Outdoor: DB35°C/WB24°C Indoor air flow: High Pipe length: 5m

Conditions Indoor: DB20°C/WB15°C Outdoor: DB7°C/WB6°C Indoor air flow: High Pipe length: 5m

Cooling Heating

Technical Information

Service Manual

2.4 Cooling and Heating Data Sheet in Rated Frequency

2.5 Noise Curve

Indoor side noise when blowing Outdoor side noise when blowing

Indoor fan motor rotating speed Compressor frequency(Hz)

Noise/dB(A)

Low

Middle

High

Super High

12K

09K

20 4030 50 60 70 80

Noise dB(A)

09&12K Cooling

09&12K Heating

Cooling:

Rated cooling

condition(°C) (DB/WB)

Model

Pressure of gas pipe

connecting indoor and

outdoor unit

Inlet and outlet pipe temperature of heat

exchanger

Fan speed of

indoor unit

Fan speed of

outdoor unit

Compressor

revolution

(rps)

Indoor Outdoor P (MPa) T1 (°C) T2 (°C)

27/19 35/24

09K

0.8 ~ 1.1

12 to 15 65 to 38

TURBO High

12K 11 to 14 64 to 37 60

27/19 35/24 18K 0.9 ~ 1.1 12 to 14 75 to 37 Super High High 52

Instruction:

T1: Inlet and outlet pipe temperature of evaporator T2: Inlet and outlet pipe temperature of condenser P: Pressure at the side of big valve Connection pipe length: 5 m.

Heating:

Rated cooling

condition(°C) (DB/WB)

Model

Pressure of gas pipe

connecting indoor and

outdoor unit

Inlet and outlet pipe temperature of heat

exchanger

Fan speed of

indoor unit

Fan speed of

outdoor unit

Compressor

revolution

(rps)

Indoor Outdoor P (MPa) T1 (°C) T2 (°C)

20/- 7/6

09K

2.8 ~ 3.2

35 to 63 2 to 5

TURBO High

12K 35 to 65 2 to 5 67

20/- 7/6 18K 2.2 ~ 2.4 70 to35 2 to 4 Super High High 65

09/12K

Technical Information

Service Manual

3. Outline Dimension Diagram

3.1 Indoor Unit

Unit:mm

Model W H D

09K 790 275 200 12K 845 289 209

12K

09K

150

168.5 462 159.5

Φ55

123.5 542 179.5

83.2

124.7

Φ55

Technical Information

Service Manual

3.2 Outdoor Unit

712

782

257

320

540

286

510

Unit:mm

257

780

596

842

286

540

320

Unit:mm

L4VO32-09

L4VO32-12

Technical Information

Service Manual

Indoor unit

Outdoor unit

COOLING

HEATING

4-Way valve

Discharge

Suction

Heat exchanger (evaporator)

Heat exchanger (condenser)

Valve

Liquid pipe side

Gas pipe side

Strainer

Capillary

Accumlator

Compressor

4. Refrigerant System Diagram

Liquid pipe:1/4" (6mm) Gas pipe:3/8" (9.52mm)

09/12K

Technical Information

Service Manual

5. Electrical Part

5.1 Wiring Diagram

● Indoor Unit

● Instruction

Symbol Symbol Color Symbol Symbol Color Symbol Name

WH White GN Green CAP Jumper cap

YE Yellow BN Brown COMP Compressor

RD Red BU Blue Grounding wire

YEGN Yellow/Green BK Black / /

VT Violet OG Orange / /

Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.

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L4VI32-09, L4VI32-12

Technical Information

Service Manual

● Outdoor Unit

600007000687

L4VO32-09

L4VO32-12

600007000763

Technical Information

Service Manual

No Name

Interface of communication wire for indoor unit and outdoor unit

2 Interface of live wire

Interface of health function neutral

wire

4 Interface of neutral wire 5 Interface of fan 6 Interface of health function live wire 7 Jumper cap 8 Auto button 9 Up&down swing interface

10 Feedback interface of indoor unit 11 left&right swing interface 12 Interface of wi 13 Interface of tube temperature sensor 14 Wired controller 15 Display interface 16 Fuse 17 Terminal for gate control function

5.2 PCB Printed Diagram

Indoor Unit

● Top view

● Bottom view

3 4 5 6

8 9 10

Technical Information

Service Manual

● Top view

● Bottom view

3 4

8 9

10111213

Outdoor Unit

No. Name

1 Compressor wiring terminal 2 Reactor wiring terminal 3 Outdoor fan wiring terminal

Terminal of chassis electric heater

Terminal of compressor

electric heater

6 Terminal of 4-way valve 7 Grounding wire 8 Communication wire 9

Neutral wire

10 Live wire

Terminal of electronic

expansion valve

Terminal of temperature

sensor

13 Compressor overload terminal

09/12K

Technical Information

Service Manual

6. Function and Control

6.1 Remote Controller Introduction

No. Button name Function

1 ON/OFF Turn on or turn off the unit

2 TURBO Set turbo function

3 MODE Set operation mode

Set up&down swing status

5 I FEEL Set I FEEL function

6 TEMP Switch temperature displaying type on the unit’s display

Set health function and air function

8 LIGHT Set light function

9 X-FAN Set X-FAN function

10 SLEEP Set sleep function

11 CLOCK Set clock of the system

12 TOFF Set timer off function

13 TON Set timer on function

Set left&right swing status

15 FAN Set fan speed

16 / Set temperature and time

6.2 Preparation before operation

When using the remote controller for the first time or after replacing the batteries,

please set the time of the system according to current time in the following steps:

(1).

Pressing CLOCK button, is blinking.

(2).

Pressing or button, the clock time will increase or decrease rapidly.

(3).

Press CLOCK button again to confirm the time and return to display current time.

6.3 Introduction of operation function

(1).

Selecting operation mode

In unit on status, press MODE button to select operation mode in following sequence:

(2).

Setting temperature

In unit on status, press

button to increase setting temperature and press button to decrease setting temperature. The

Note: Under auto mode, manual adjustment of temperature is not needed.

range of temperature is from 16ºC to 30ºC.

(3).

Adjusting fan speed

In unit on status, press FAN button to adjust fan speed in following sequence:

Notes:

①.

When operation mode changes, fan speed is memoried;

②.

Under dry mode, fan speed is low and can not be adjusted.

(4).

Setting swing function

Setting left&right swing

1).

Under simple swing status, press button to adjust left&right swing status;

Technical Information

Service Manual

2).

Under fixed-angle swing status, press button to adjust left&right swing angle circularly as below:

Note: operate continuously left&right swing in 2 seconds, swing states will change

according to above-mentioned order, or switch closed state and

state.

Setting up&down swing

1).

Under simple swing status, press button to adjust up&down swing status;

2).

Under fixed-angle swing status, press button to adjust up&down swing angle circularly as below:

Note: operate continuously left&right swing in 2 seconds, swing states will change according to above-mentioned order, or switch

closed state and state

(5).

Setting turbo function

Under cool or heat mode, press TURBO button to set turbo function.

When

is displayed, turbo function is on.

When

is not displayed, turbo function is off.

When turbo function is on, the unit operates in super high speed to achieve quick cooling or heating. When turbo function is off, the unit operates in setting fan speed.

(6).

Setting light function

The light on the receiver light board will display present operation status. If you want to turn

off the light, please press LIGHT button. Press this button again to turn on the light.

(7).

Viewing ambient temperature

In unit on status, receiver light board or wired controller is defaulted to display setting

temperature. Press TEMP b

utton to view indoor or outdoor ambient temperature.

When

is displayed, it means the displayed temperature is setting temperature.

When

is displayed, it means the displayed temperature is indoor ambient temperature.

When is displayed, it means the displayed temperature is outdoor ambient temperature.

Note: setting temperature is always displayed in Remote Controller.

(8).

Setting X-FAN function

In cool or dry mode, press X-FAN button to set X-FAN function.

When

is displayed, X-FAN function is on.

When

is not displayed, X-FAN function is off.

When X-FAN function is on, the water on the evaporator will be blown away until turning off the unit to avoid mildew.

(9).

Setting health function

In unit on status, press

button to set health function.

When

is displayed, health function is on.

When

is not displayed, health function is off.

Health function is available when the unit is equipped with anion generator. When health function is on, the anion generator will start operation, adsorbing the dusts and killing the bacteria in the room.

(10).

Setting air function

Press

button until is displayed, then air function is turned on.

Press

button until is disappeared, then air function is turned off.

When the indoor unit is connected with fresh air valve, air function setting can control the connection of fresh air valve, which can control the fresh air volume and improve the air quality inside the room.

Technical Information

Service Manual

(11).

Setting sleep function

In unit on status, press SLEEP button to turn on or turn off sleep function.

When

is displayed, sleep function is on.

When

is not displayed, sleep function is off.

Notes:

①.

Sleep function can not be set in auto and fan mode;

②.

When turning off the unit or switching mode, sleep function is cancelled;

(12).

Setting I FEEL function

In unit on status, press I FEEL button to turn on or turn off I FEEL function.

When is displayed, I FEEL function is on.

When

is not displayed, I FEEL function is off.

When I FEEL function is turned on, the unit will adjust temperature according to the temperature detected by the remote controller to achieve the best air-conditioning effect. In this case, you should place the remote controller within the valid receiving range.

(13).

Setting timer

You can set the operation time of unit as you need. You can also set timer on and timer off in combination. Before setting, check if the time of the system is the same as the current time. If not, please set the time according to current time.

1).

Setting timer off

①.

Pressing TOFF button, “OFF” is blinking and time displaying zone displays the timer time of last setting

②.

Press or button to adjust the timer time.

③.

Press TOFF button again to confirm setting. OFF is displayed and time displaying zone resumes to display current time.

④.

Press TOFF button again to cancel timer and OFF is not displayed.

2).

Setting timer on

①.

Pressing TON button, “ON” is blinking and time displaying zone displays the timer time of last setting.

②.

Press or button to adjust the timer time.

③.

Press TON button again to confirm setting. ON is displayed and time displaying zone resumes to display current time.

④.

Press TON button again to cancel timer and ON is not displayed.

6.4 Introduction of special functions

(1).

Setting child lock

Press

and button simultaneously to lock the buttons on remote controller and is displayed.

Press

and button simultaneously again to unlock the buttons on remote controller and is not displayed.

If the buttons are locked,

blinks 3 times when pressing the button and any operation on the button is invalid.

(2).

Switching temperature scale

In unit off status, press MODE button and

button simultaneously to switch temperature scale between ºC and ºF.

(3).

Setting energy-saving function

In unit on status and under cool mode, press CLOCK and TEMP button

simultaneously to enter energy-saving mode.

u When

is displayed, energy-saving function is on.

u When

is not displayed, energy-saving function is off.

If you want to turn off the energy-saving function, press CLOCK and TEMP button and is not displayed.

Note: energy-saving function is only available in cooling mode and it will be exited when switching mode or setting sleep function.

(4).

Absence function

In unit on status and under heat mode, press CLOCK and TEMP button simultaneously to enter absence function.

Press CLOCK and TEMP button simultaneously again to exit absence function.

Temperature displaying zone resumes previous display and is not displayed.

Temperature displaying zone displays 8 and is displayed.

Technical Information

Service Manual

In winter, absence function can keep the indoor ambient temperature above 0ºC to avoid freezing.

Note: Absence function is only available in heating mode and it will be exited when switching mode or setting sleep function.

(1).

Lift the cover along the direction of arrow (as shown in Fig 1①).

(2).

Take out the original batteries (as shown in Fig 1②).

(3).

Place two 7# (AAA 1.5V) dry batteries, and make sure the position of “+” polar and “ -” polar is correct (as shown in Fig 2 ③).

(4).

Reinstall the cover (as shown in Fig 2④).

Fig.1 Fig.2

Notes:

①.

The remote controller should be placed 1m away from the TV set or stereo sound sets.

②.

.egnar gniviecer sti nihtiw demrofrep eb dluohs rellortnoc etomer fo noitarepo ehT

③.

If you need to control the main unit, please point the remote controller at the signal receiving window of the main unit to improve

④.

When the remote controller is sending signal, “ ” icon will be blinking for 1 second. When the main unit receives valid remote

⑤.

If the remote controller does not operate normally, please take the batteries out and reinsert them after 30 seconds. If it still can't operate properly, replace the batteries.

⑥.

When replacing the batteries, do not use old or different types of batteries, otherwise, it may cause malfunction.

⑦.

.seirettab eht tuo ekat esaelp ,emit gnol a rof rellortnoc etomer eht esu t’now uoy nehW

the receiving sensibility of main unit.

control signal, it will give out a sound

Technical Information

Service Manual

6.5 Brief Description of Modes and Functions

1.Basic function of system

(1)Cooling mode

(1) Under this mode, fan and swing operates at setting status. Temperature setting range is 16~30OC.

(2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status.

(2)Drying mode

(1) Under this mode, fan operates at low speed and swing operates at setting status. Temperature setting range is 16~30OC.

(2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status.

(3) Protection status is same as that under cooling mode.

(4) Sleep function is not available for drying mode.

(3)Heating mode

(1) Under this mode, Temperature setting range is 16~30OC.

(2) Working condition and process for heating mode:

When turn on the unit under heating mode, indoor unit enters into cold air prevention status. When the unit is stopped or at OFF status,

and indoor unit has been started up just now, the unit enters into residual heat-blowing status.

(4)Working method for AUTO mode:

1.Working condition and process for AUTO mode:

a.Under AUTO mode, standard heating Tpreset=20OC and standard cooling Tpreset=25OC. The unit will switch mode automatically

according to ambient temperature.

2.Protection function

a. During cooling operation, protection function is same as that under cooling mode.

b. During heating operation, protection function is same as that under heating mode.

3. Display: Set temperature is the set value under each condition. Ambient temperature is (Tamb.-Tcompensation) for heat pump unit

and Tamb. for cooling only unit.

4. If theres I feel function, Tcompensation is 0. Others are same as above.

(5)Fan mode

Under this mode, indoor fan operates at set fan speed. Compressor, outdoor fan, 4-way valve and electric heating tube stop operation.

Indoor fan can select to operate at high, medium, low or auto fan speed. Temperature setting range is 16~30

2. Other control

(1) Buzzer

Upon energization or availably operating the unit or remote controller, the buzzer will give out a beep.

(2) Auto button

If press this auto button when turning off the unit, the complete unit will operate at auto mode. Indoor fan operates at auto fan speed

and swing function is turned on. Press this auto button at ON status to turn off the unit.

(3) Auto fan

Heating mode: During auto heating mode or normal heating ode, auto fan speed will adjust the fan speed automatically according to

ambient temperature and set temperature.

(4) Sleep

After setting sleep function for a period of time, system will adjust set temperature automatically.

(5) Timer function:

General timer and clock timer functions are compatible by equipping remote controller with different functions.

(6) Memory function

memorize compensation temperature, off-peak energization value.

Memory content: mode, up&down swing, light, set temperature, set fan speed, general timer (clock timer cant be memorized).

After power recovery, the unit will be turned on automatically according to memory content.

(7) Health function

During operation of indoor fan, set health function by remote controller. Turn off the unit will also turn off health function.

Turn on the unit by pressing auto button, and the health is defaulted ON.

●

Indoor Unit

Technical Information

Service Manual

(8)I feel control mode

After controller received I feel control signal and ambient temperature sent by remote controller, controller will work according to the ambient

temperature sent by remote controller.

(9)Entry condition for compulsory defrosting function

When turn on the unit under heating ode and set temperature is 16OC (or 16.5OC by remote controller), press “+, -, +, -, +, -” button

successively within 5s and then indoor unit will enter into compulsory defrosting setting status:

(1) If theres only indoor units controller, it enters into indoor normal defrosting mode.

(2) If theres indoor units controller and outdoor units controller, indoor unit will send compulsory defrosting mode signal to outdoor unit and

then outdoor unit will operate under normal defrosting mode. After indoor unit received the signal that outdoor unit has entered into defrosting

status, indoor unit will cancel to send compulsory mode to outdoor unit. If outdoor unit hasnt received feedback signal from outdoor unit after

3min, indoor unit will also cancel to send compulsory defrosting signal.

(10)Refrigerant recovery function:

Enter into Freon recovery mode actively: Within 5min after energization, turn on the unit at 16OC under cooling mode, and press light button

for 3 times within 3s to enter into Freon recovery mode. Fo is displayed and Freon recovery mode will be sent to outdoor unit.

(11)Ambient temperature display control mode

1. When user set the remote controller to display set temperature (corresponding remote control code: 01), current set temperature will be

displayed.

2. Only when remote control signal is switched to indoor ambient temperature display status (corresponding remote control code: 10) from

other display status (corresponding remote control code: 00, 01,11),controller will display indoor ambient temperature for 3s and then turn

back to display set temperature.

Under this mode, indoor fan operates at set fan speed. Compressor, outdoor fan, 4-way valve and electric heating tube stop operation.

Indoor fan can select to operate at high, medium, low or auto fan speed. Temperature setting range is 16~30

(12)Off-peak energization function:

Adjust compressors minimum stop time. The original minimum stop time is 180s and then we change to:

The time interval between two start-ups of compressor cant be less than 180+Ts(0≤T≤15). T is the variable of controller. Thats to say the

minimum stop time of compressor is 180s~195s. Read-in T into memory chip when refurbish the memory chip each time. After power

recovery, compressor can only be started up after 180+T s at least.

(13) SE control mode

The unit operates at SE status.

(14) X-fan mode

When X-fan function is turned on, after turn off the unit, indoor fan will still operate at low speed for 2min and then the complete unit will be

turned off. When x-fan function is turned off, after turn off the unit, the complete unit will be turned off directly.

(15) 8OC heating function

Under heating mode, you can set 8OC heating function by remote controller. The system will operate at 8OC set temperature.

(16)Turbo function

Turbo function can be set under cooling and heating modes. Press Fan Speed button to cancel turbo setting. Turbo function is not available under auto, drying and fan modes.

Technical Information

Service Manual

1. Cooling mode:

Working condition and process of cooling mode:

①

When Tindoor ambient temperature≥Tpreset, unit enters into cooling mode. Indoor fan, outdoor fan and compressor start operation.

Indoor fan operates according to set fan speed.

②

When Tindoor ambient temperature≤Tpreset-2℃, compressor stops operation and outdoor fan will stop 30s later. Indoor fan operates

according to set fan speed.

③

When Tpreset-2℃＜Tindoor ambient temperature＜Tpreset, unit operates according to the previous status.

Under cooling mode, 4-way valve is not energized. Temperature setting range is 16~30℃. If compressor stops because of malfunction

in cooling mode, indoor fan and swing motor will work according to the original status.

2. Drying mode

(1) Working condition and process of drying mode

①

When Tindoor ambient temperature＞Tpreset, unit will be in drying mode. Outdoor fan and compressor start operation while indoor

fan will operate at low fan speed.

②

When Tpreset-2℃≤Tindoor ambient temperature≤Tpreset, unit operates according to the previous status.

③

When Tindoor ambient temperature＜Tpreset-2℃, compressor stops operation and outdoor fan will stop 30s later.

(2) Under drying mode, 4-way valve is not energized. Temperature setting range is 16~30℃.

(3) Protection function: same as in cooling mode.

3. Fan mode

(1) Under this mode, indoor fan can select different fan speed (except Turbo) or auto fan speed. Compressor, outdoor fan and 4-way

valve all stop operation.

(2) In fan mode, temperature setting range is 16~30℃.

4. Heating mode

Working condition and process of heating mode:

①

When Tpreset-(Tindoor ambient temperature-Tcompensation)≥1℃, unit enters into heating mode. Compressor, outdoor fan and 4-way

valve start operation.

②

When -2℃＜Tpreset-(Tindoor ambient temperature-Tcompensation)＜1℃, unit operates according to the previous

status.

③

When Tpreset-(Tindoor ambient temperature-Tcompensation)≤-2℃, compressor stops operation and outdoor fan will stop 30s later.

Indoor fan will be in residual-heat blowing status.

④

When unit is turned off under heating mode or changed to other modes from heating mode, 4-way valve will be power-off 2min after

compressor stops working (compressor is in operation status under heating mode).

⑤

When Toutdoor ambient temperature＞30℃, compressor stops operation immediately. Outdoor fan will stop 30s later.

⑥

Under the condition that compressor is turned on, when unit is changed to heating mode from cooling or drying mode, 4-way valve

will be energized in 2~3mins delay.

Note: Tcompensation is determined by IDU and ODU. If IDU controls the compensation temperature, then Tcompensation is

determined according to the value sent by IDU to ODU; If IDU does not control the compensation temperature, then Tcompensation will

default to 3℃ by the ODU.

5. Freon recovery mode

After the Freon recovery signal from IDU is received, cooling at rated frequency will be forcibly turned on to recover Freon.

Indoor unit will display Fo. If any signal from remote controller is received, unit will exit from Freon recovery mode and indoor unit stops

displaying Fo.

6. Compulsory defrosting

If unit is turned on under heating mode and set temperature is 16℃ (by remote controller), press “+, -, +, -, +, -” within 5s, unit will enter

into compulsory defrosting mode and send the signal to ODU. When the compulsory defrosting signal from ODU is received, IDU will exit

from the compulsory defrosting mode and stop sending the signal to ODU.

After ODU receives the compulsory defrosting code, it will start compulsory defrosting. Defrosting frequency and opening

angle will be the same as in normal defrosting mode. When compulsory defrosting is nished, the complete unit resumes

original status.

●

Outdoor Unit

Technical Information

Service Manual

7. Auto mode

Auto mode is determined by controller of IDU. See IDU logic for details.

8. 8

C heating

Set temperature is 8

C. Display board of IDU displays 8OC. Under this mode, “Cold air prevention” function is shielded.

If compressor is operating under this mode, fan speed will adjust according to auto fan speed; if compressor stops operation

under this mode, indoor fan will be in residual-heat blowing status.

When power on, communication light will be blinking in a normal way (after receiving a group of correct signals, blinking stops for 0.2s~0.3s). If theres no communication, communication light will be always on. If other ODU has malfunction, communication light will be on for 1s and off for 1s in a circular way.

Technical Information

Service Manual

Installation and Maintenance

Service Manual

Part

Ⅱ

: Installation and Maintenance

1. Select the installation location according to the requirement of this manual.(See the requirements in installation part)

2. Handle unit transportation with care; the unit should not be carried by only one person if it is more than 20kg.

3. When installing the indoor unit and outdoor unit, a sufcient xing bolt must be installed; make sure the installation support is rm.

4. Ware safety belt if the height of working is above 2m.

5. Use equipped components or appointed components during installation.

6. Make sure no foreign objects are left in the unit after nishing installation.

Electrical Safety Precautions:

7. Notes for Installation and Maintenance

Safety Precautions: Important!

Please read the safety precautions carefully before installation and maintenance. The following contents are very important for installation and maintenance.

Please follow the instructions below.

●The installation or maintenance must accord with the

instructions.

●Comply with all national electrical codes and local

electrical codes.

●Pay attention to the warnings and cautions in this

manual.

●All installation and maintenance shall be performed by distributor or qualied person.

●All electric work must be performed by a licensed

technician according to local regulations and the instructions given in this manual.

●Be caution during installation and maintenance. Prohibit

incorrect operation to prevent electric shock, casualty and other accidents.

1. Cut off the power supply of air conditioner before checking and maintenance.

2. The air condition must apply specialized circuit and prohibit share the same circuit with other appliances.

3. The air conditioner should be installed in suitable location and ensure the power plug is touchable.

4. Make sure each wiring terminal is connected firmly during installation and maintenance.

5. Have the unit adequately grounded. The grounding wire cant be used for other purposes.

6. Must apply protective accessories such as protective boards, cable-cross loop and wire clip.

7. The live wire, neutral wire and grounding wire of power supply must be corresponding to the live wire, neutral wire and grounding wire of the air conditioner.

8. The power cord and power connection wires cant be pressed by hard objects.

9. If power cord or connection wire is broken, it must be

replaced by a qualied person.

Warnings

Improper installation may lead to re hazard, explosion,

electric shock or injury.

Installation Safety Precautions:

10. If the power cord or connection wire is not long enough, please get the specialized power cord or connection wire from the manufacture or distributor. Prohibit prolong the wire by yourself.

11. For the air conditioner without plug, an air switch must be installed in the circuit. The air switch should be all-pole parting and the contact parting distance should be more than 3mm.

12. Make sure all wires and pipes are connected properly and the valves are opened before energizing.

13. Check if there is electric leakage on the unit body. If yes, please eliminate the electric leakage.

14. Replace the fuse with a new one of the same specication

if it is burnt down; dont replace it with a cooper wire or conducting wire.

15. If the unit is to be installed in a humid place, the circuit breaker must be installed.

Installation and Maintenance

Service Manual

Safety Precautions for Installing and Relocating the Unit:

Warnings

To ensure safety, please be mindful of the following precautions.

1. When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the

specied refrigerant.

Any presence of air or other foreign substance in the refrigerant circuit will cause system pressure rise or compressor rupture, resulting in injury.

2.When installing or moving this unit, do not charge the refrigerant which is not comply with that on the nameplate or

unqualied refrigerant.

Otherwise, it may cause abnormal operation, wrong action, mechanical malfunction or even series safety accident.

3.When refrigerant needs to be recovered during relocating or repairing the unit, be sure that the unit is running in cooling mode.Then, fully close the valve at high pressure side (liquid valve).About 30-40 seconds later, fully close the valve at low pressure side (gas valve), immediately stop the unit and disconnect power. Please note that the time for refrigerant recovery should not exceed 1 minute.

If refrigerant recovery takes too much time, air may be sucked in and cause pressure rise or compressor rupture, resulting in injury.

4.During refrigerant recovery, make sure that liquid valve and gas valve are fully closed and power is disconnected before detaching the connection pipe.

If compressor starts running when stop valve is open and connection pipe is not yet connected, air will be sucked in and cause pressure rise or compressor rupture, resulting in injury.

5.When installing the unit, make sure that connection pipe is securely connected before the compressor starts running.

If compressor starts running when stop valve is open and connection pipe is not yet connected, air will be sucked in and cause pressure rise or compressor rupture, resulting in injury.

6.Prohibit installing the unit at the place where there may be leaked corrosive gas or ammable gas.

If there leaked gas around the unit, it may cause explosion and other accidents.

7.Do not use extension cords for electrical connections. If the electric wire is not long enough, please contact a local service center authorized and ask for a proper electric wire.

Poor connections may lead to electric shock or re.

8.Use the specied types of wires for electrical connections between the indoor and outdoor units. Firmly clamp the wires so

that their terminals receive no external stresses.

Electric wires with insufcient capacity, wrong wire connections and insecure wire terminals may cause electric shock or re.

Safety Precautions for Refrigerant

●To realize the function of the air conditioner unit, a special refrigerant circulates in the system. The used refrigerant is the uoride R32,which is specially cleaned. The refrigerant is ammable and inodorous. Furthermore, it can leads to explosion under certain conditions. But the ammability of the refrigerant is very low. It can be ignited only by re.

●Compared to common refrigerants, R32 is a nonpolluting refrigerant with no harm to the ozonosphere. The inuence upon

the greenhouse effect is also lower. R32 has got very good thermodynamic features which lead to a really high energy

efciency. The units therefore need a less lling.

WARNING:

●Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacture. Should repair be necessary,contact your nearest authorized Service Centre. Any repairs carried out by unqualied

personnel may be dangerous. The appliance shall be stored in a room without continuously operating ignition sources. (for

example:open ames , an operating gas appliance or an operating electric heater.)

●Do not pierce or burn.

●Appliance shall be installed, operated and stored in a room with a oor area larger than 4m (or 6m ).

●Appliance lled with ammable gas R32. For repairs, strictly follow manufacturers instructions only.Be aware that refrigrants

not contain odour.

●Read specialists manual.

Installation and Maintenance

Service Manual

Safety Operation of Flammable Refrigerant

Qualication requirement for installation and maintenance man

●All the work men who are engaging in the refrigeration system should bear the valid certication awarded by the authoritative organization and the qualication for dealing with the refrigeration system recognized by this industry. If it needs other technician to maintain and repair the appliance, they should be supervised by the person who bears the qualication for using the ammable refrigerant.

●It can only be repaired by the method suggested by the equipments manufacturer.

Installation notes

●The air conditioner is not allowed to use in a room that has running re (such as re source,working coal gas ware,

operating heater).

●It is not allowed to drill hole or burn the connection pipe.

●The air conditioner must be installed in a room that is larger than the minimum room area.

The minimum room area is shown on the nameplate or following table a.

●Leak test is a must after installation.

table a - Minimum room area(m

)

Maintenance notes

●Check whether the maintenance area or the room area meet the requirement of the nameplate.

— Its only allowed to be operated in the rooms that meet the requirement of the nameplate.

●Check whether the maintenance area is well-ventilated.

— The continuous ventilation status should be kept during the operation process.

●Check whether there is re source or potential re source in the maintenance area. — The naked ame is prohibited in the maintenance area; and the “no smoking” warning board should be hanged.

●Check whether the appliance mark is in good condition.

— Replace the vague or damaged warning mark.

Welding

●If you should cut or weld the refrigerant system pipes in the process of maintaining, please follow the steps as below:

a. Shut down the unit and cut power supply b. Eliminate the refrigerant c. Vacuuming d. Clean it with N2 gas e. Cutting or welding f. Carry back to the service spot for welding

●Make sure that there isnt any naked ame near the outlet of the vacuum pump and its well-ventilated.

●The refrigerant should be recycled into the specialized storage tank.

Filling the refrigerant

●Use the refrigerant lling appliances specialized for R32. Make sure that different kinds of refrigerant wont contaminate with

each other.

●The refrigerant tank should be kept upright at the time of lling refrigerant.

●Stick the label on the system after lling is nished (or havent nished).

●Dont overlling.

●After lling is nished, please do the leakage detection before test running; another time of leak detection should be done

when its removed.

Safety instructions for transportation and storage

●Please use the ammable gas detector to check before unload and open the container.

●No re source and smoking.

●According to the local rules and laws.

Installation and Maintenance

Service Manual

Main Tools for Installation and Maintenance

1. Level meter, measuring tape

4. Electroprobe

7. Electronic leakage detector

10. Pipe pliers, pipe cutter

2. Screw driver

5. Universal meter

8. Vacuum pump

11. Pipe expander, pipe bender

3. Impact drill, drill head, electric drill

6. Torque wrench, open-end wrench, inner hexagon spanner

9. Pressure meter

12. Soldering appliance, refrigerant container



Installation and Maintenance

Service Manual

8. Installation

8.1 Installation Dimension Diagram

Drainage pipe

At least 250cm

At least 15cm

At least 50cm

At least

30cm

At least 300cm

At least 200cm

Space to the oor

Space to the obstruction

Space to the

obstruction

Space to the ceiling

Space to the obstruction

At least 30cm

At least 15cm

Space to the wall

Installation and Maintenance

Service Manual

Preparation before installation

Prepare tools

Read the requirements for electric connection

select installation location

Select indoor unit installation location

Install wall-mounting frame, drill wall holes

Connect pipes of indoor unit and drainage pipe

Connect wires of indoor unit

Connect wires of outdoor unit

Bind up pipes and hang the indoor unit

Make the bound pipes pass through the wall hole and then connect outdoor unit

Neaten the pipes

Vacuum pumping and leakage detection

Check after installation and test operation

Finish installation

Note: this flow is only for reference; please find the more detailed installation steps in this section

Select outdoor unit installation location

Install the support of outdoor unit (select it according to the actual situation)

Install drainage joint of outdoor unit (only for cooling and heating unit)

Connect pipes of outdoor unit

Start installation

Fix outdoor unit

Installation and Maintenance

Service Manual

No. Name No. Name

1 Indoor unit 8 Sealing gum 2 Outdoor unit 9 Wrapping tape

3 Connection pipe 10

Support of outdoor unit

4 Drainage pipe 11 Fixing screw

Wall-mounting

frame

Drainage plug(cooling and heating unit)

Connecting

cable(power cord)

Owners manual,

remote controller

7 Wall pipe

8.2 Installation Parts-checking

8.3 Selection of Installation Location

1.Please contact the local agent for installation.

2.Dont use unqualied power cord.

1. Basic Requirement:

Installing the unit in the following places may cause malfunction. If it is unavoidable, please consult the local dealer: (1) The place with strong heat sources, vapors, ammable or explosive gas, or volatile objects spread in the air. (2) The place with high-frequency devices (such as welding machine, medical equipment). (3) The place near coast area. (4) The place with oil or fumes in the air. (5) The place with sulfureted gas. (6) Other places with special circumstances. (7) The appliance shall nost be installed in the laundry.

2. Indoor Unit:

(1) There should be no obstruction near air inlet and air outlet. (2) Select a location where the condensation water can be dispersed easily andwont affect other people. (3) Select a location which is convenient to connect the outdoor unit and near the power socket. (4) Select a location which is out of reach for children.

(5)

The location should be able to withstand

the weight of

indoor unit and wont increase noise and vibration.

(6)

The appliance must be installed 2.5m above oor.

(7) Dont install the indoor unit right above the electric

appliance.

(8) Please try your best to keep way from uorescent lamp.

3. Outdoor Unit:

(1) Select a location where the noise and outow air emitted by the outdoor unit will not affect neighborhood. (2) The location should be well ventilated and dry, in which the outdoor unit wont be exposed directly to sunlight or strong

wind.

(3) The location should be able to withstand the weight of outdoor unit. (4) Make sure that the installation follows the requirement of

installation dimension diagram.

(5) Select a location which is out of reach for children and far away from animals or plants.If it is unavoidable, please add fence for safety purpose.

Note:

1. Safety Precaution

(1) Must follow the electric safety regulations when installing the unit. (2) According to the local safety regulations, use qualified power supply circuit and air switch. (3) Make sure the power supply matches with the requirement of air conditioner. Unstable power supply or incorrect wiring may result in electric shock,re hazard or malfunction. Please install proper power supply cables before using the air

conditioner.

(4) Properly connect the live wire, neutral wire and grounding wire of power socket. (5) Be sure to cut off the power supply before proceeding any work related to electricity and safety. (6) Do not put through the power before nishing installation. (7) If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualied persons in order to avoid a hazard. (8) The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper tube. (9) The appliance shall be installed in accordance with national wiring regulations. (10) Appliance shall be installed, operated and stored in a room with a oor area larger than “X”m (see table 1).

8.4 Requirements for electric connection

Air-conditioner Air switch capacity

09K 9A 12K 13A 18K 16A

2. Grounding Requirement:

(1) The air conditioner is rst class electric appliance. It must be properly grounding with specialized grounding device by a professional. Please make sure it is always grounded effectively, otherwise it may cause electric shock. (2) The yellow-green wire in air conditioner is grounding wire, which cant be used for other purposes. (3) The grounding resistance should comply with national electric safety regulations. (4) The appliance must be positioned so that the plug is accessible. (5) An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in xed wiring. (6) Including an air switch with suitable capacity, please note the following table. Air switch should be included magnet buckle and heating buckle function, it can protect the circuitshort and overload. (Caution: please do not use the fuse only for protect the circuit)

Please notice that the unit is filled with ammable gas R32. Inappropriate treatment of the unit involves the risk of severe damages of people and material. Details to this refrigerant are found in chapter “refrigerant”.

8.5 Installation of Indoor Unit

1. Choosing Installation Iocation

Recommend the installation location to the client and then conrm it with the client.

2. Install Wall-mounting Frame

(1) Hang the wall-mounting frame on the wall; adjust it in horizontal position with the level meter and then point out the

Installation and Maintenance

Service Manual

Left

Rear lef

Right

Rear right

Cut off

the hole

Left Right

5-10

55mm

Indoor

Outdoor

(1) Pay attention to dust prevention and take relevant safety measures when opening the hole. (2) The plastic expansion particles are not provided and should be bought locally.

Fig.1

Fig.2

Fig.3

Fig.4

3. Install Wall-mounting Frame

(1) Choose the position of piping hole according to the direction of outlet pipe. The position of piping hole should be a little lower than the wall-mounted frame.(As show in Fig.1)

4. Outlet pipe

(1) The pipe can be led out in the direction of right, rear right, left or rear left.(As show in Fig.3) (2) When selecting leading out the pipe from left or right, please cut off the corresponding hole on the bottom case.(As show in Fig.4)

(2) Open a piping hole with the diameter of Φ55mm on the selected outlet pipe position.In order to drain smoothly, slant the piping hole on the wall slightly downward to the outdoor side with the gradient of 5-10°.(As show in Fig.2)

Note:

Left

Wall

Φ55mm

Right

Mark in the middle of it

Level meter

Rear piping hole

Wall

Space

to the

wall

above

150mm

Space

to the

wall

above

150mm

Φ55mm

Rear piping hole

12K:

09K:

Left

Wall

Φ55mm

Right

Mark in the middle of it

Level meter

Rear piping hole

Wall

Space

to the

wall

above

150mm

Space

to the

wall

above

150mm

Φ55m

Rear piping hole

Insulating pip

Torque wrenc

Open-end

wrench

Indoor pipe

Pipe

Union nut

Union nutPipe joint

Pipe

Hex nut diameter(mm) Tightening torque(N.m)

Φ6 15~20

Φ9.52 30~40

Φ12 45~55 Φ16 60~65 Φ19 70~75

Refer to the following table for wrench moment of force

Fig.5 Fig.6

Fig.7

5. Connect the Pipe of Indoor Unit

(1) Aim the pipe joint at the corresponding bellmouth.(As show in Fig.5) (2) Pretightening the union nut with hand. (3) Adjust the torque force by referring to the following sheet. Place the open-end wrench on the pipe joint and place the torque wrench on the union nut. Tighten the union nut with torque wrench.(As show in Fig.6) (4) Wrap the indoor pipe and joint of connection pipe with insulating pipe, and then wrap it with tape.(As show in Fig.7)

6. Install Drain Hose

(1) Connect the drain hose to the outlet pipe of indoor unit.(As show in Fig.8) (2) Bind the joint with tape.(As show in Fig.9)

screw xing holes on the wall. (2) Drill the screw xing holes on the wall with impact drill (the specification of drill head should be the same as the plastic expansion particle) and then ll the plastic expansion particles in the holes. (3) Fix the wall-mounting frame on the wall with tapping screws (ST4.2X25TA) and then check if the frame is rmly installed by pulling the frame. If the plastic expansion particle is loose, please drill another xing hole nearby.

18K:

Left

Wall

Φ55mm

Right

Mark in the middle of it

Level meter

Rear piping hole

Wall

Space to the wall above 150mm

Rear piping hole

Installation and Maintenance

Service Manual

(4) Put wiring cover back and then tighten the screw. (5) Close the panel.

Indoor unit

Gas pipe

Indoor and

outdoor power cord

Liquid pipe

Drain hose

Band

Drain hose

Band

Connection pipe

Indoor power cord

Power connection

wire

Cable-cross

hole

(1) All wires of indoor unit and outdoor unit should be connected by a professional. (2) If the length of power connection wire is insufcient, please contact the supplier for a new one. Avoid extending the wire by yourself. (3) For the air conditioner with plug, the plug should be reachable after nishing installation. (4) For the air conditioner without plug, an air switch must be installed in the line. The air switch should be all-pole parting and the contact parting distance should be more than 3mm.

(1) The power cord and control wire cant be crossed or

winding.

(2) The drain hose should be bound at the bottom.

7. Connect Wire of Indoor Unit

(1) Open the panel, remove the screw on the wiring cover and then take down the cover.(As show in Fig.11)

8. Bind up Pipe

(1) Bind up the connection pipe, power cord and drain hose with the band.(As show in Fig.14) (2) Reserve a certain length of drain hose and power cord for installation when binding them. When binding to a certain degree, separate the indoor power and then separate the drain hose.(As show in Fig.15) (3) Bind them evenly. (4) The liquid pipe and gas pipe should be bound separately at the end.

9. Hang the Indoor Unit

(1) Put the bound pipes in the wall pipe and then make them pass through the wall hole. (2) Hang the indoor unit on the wall-mounting frame. (3) Stuff the gap between pipes and wall hole with sealing gum. (4) Fix the wall pipe.(As show in Fig.16) (5) Check if the indoor unit is installed rmly and closed to the wall.(As show in Fig.17)

(2) Make the power connection wire go through the cable-cross hole at the back of indoor unit and then pull it out from the front side.(As show in Fig.12)

(3) Remove the wire clip; connect the power connection wire to the wiring terminal according to the color; tighten the screw and then x the power connection wire with wire clip.(As show in Fig.13)

Note:

Fig.11

Fig.12

Fig.13

Fig.14

Fig.15

Outlet

pipe

Drain hos

Drain hose

Tape

Outlet pipe

Drain hose

Insulating pip

(1) Add insulating pipe in the indoor drain hose in order to prevent condensation. (2) The plastic expansion particles are not provided. (As show in Fig.10)

Fig.8

Fig.9

Fig.10

Note:

Wiring cove

Screw

Panel

N(1) 23

blue brownblack

yellowgreen

Outdoor unit connection

Note: the wiring board is for reference only, please refer to the actual one.

Installation and Maintenance

Service Manual

Do not bend the drain hose too excessively in order to prevent blocking.

Note:

Indoor

Outdoor

Wall pipe

Sealing gum

Upper hook

Lower hook of wall-mounting frame

Fig.16

Fig.17

(1) Take sufficient protective measures when installing the outdoor unit. (2) Make sure the support can withstand at least four times the unit weight. (3) The outdoor unit should be installed at least 3cm above the oor in order to install drain joint.(As show in Fig.18) (4) For the unit with cooling capacity of 2300W~5000W, 6 expansion screws are needed; for the unit with cooling capacity of 6000W~8000W, 8 expansion screws are needed; for the unit with cooling capacity of 10000W~16000W, 10 expansion

screws are needed.

Note:

gas pipe

Liquid pipe

Liquid valve

gas valve

Union nut

Pipe joint

Handle

Screw

Foot holes

t least 3cm above the floor

Chassis

Outdoor drain joint

Drain hose

Drain ven

8.6 Installation of Outdoor Unit

1. Fix the Support of Outdoor Unit(Select it according to the actual installation situation)

(1) Select installation location according to the house structure. (2) Fix the support of outdoor unit on the selected location with

expansion screws.

2. Install Drain Joint(Only for cooling and heating unit)

(1) Connect the outdoor drain joint into the hole on the chassis. (2) Connect the drain hose into the drain vent. (As show in Fig.19)

3. Fix Outdoor Unit

(1) Place the outdoor unit on the support. (2) Fix the foot holes of outdoor unit with bolts. (As show in Fig.20)

4. Connect Indoor and Outdoor Pipes

(1) Remove the screw on the right handle of outdoor unit and then remove the handle.(As show in Fig.21) (2) Remove the screw cap of valve and aim the pipe joint at the bellmouth of pipe.(As show in Fig.22)

(3) Pretightening the union nut with hand. (4) Tighten the union nut with torque wrench .

Fig.18 Fig.19

Fig.20

Fig.21

Fig.22

(1) After tightening the screw, pull the power cord slightly to check if it is rm. (2) Never cut the power connection wire to prolong or shorten the distance.

Note:

5. Connect Outdoor Electric Wire

(1) Remove the wire clip; connect the power connection wire and power cord to the wiring terminal according to the color; x them with screws.(As show in Fig.23)

(2) Fix the power connection wire and signal control wire with wire clip (only for cooling and heating unit).

Hex nut diameter(mm) Tightening torque(N.m)

Φ6 15~20

Φ9.52 30~40

Φ12 45~55 Φ16 60~65 Φ19 70~75

Refer to the following table for wrench moment of force

Fig.23

Indoor unit connection POWERIndoor unit connection

N(1)

blue blueblack

yellowgreen

brown

(black)

23L

NN(1)

POWER

blue

black

brown brown

yellowgreen

09/12K 18K

6. Neaten the Pipes

(1) The pipes should be placed along the wall, bent reasonably and hidden possibly. Min. semidiameter of bending the pipe is

10cm.

(2) If the outdoor unit is higher than the wall hole, you must set a U-shaped curve in the pipe before pipe goes into the room, in order to prevent rain from getting into the room.(As show in Fig.24)

Note: the wiring board is for reference only, please refer to the actual one.

Installation and Maintenance

Service Manual

(3) The water outlet cant be placed in water in order to drain smoothly.(As show in Fig.27)

Liquid valve

Gas valve

Refrigerant charging vent

Nut of refrigerant

Charging vent

Vacuum pump

Piezometer

Valve cap

Lo Hi

Inner hexagon spanner

Open

The drain hose can't be fluctuant

The water

outlet can't be

fluctuant

The water outlet can't be placed in water

1. Use Vacuum Pump

(1) Remove the valve caps on the liquid valve and gas valve and the nut of refrigerant charging vent. (2) Connect the charging hose of piezometer to the refrigerant charging vent of gas valve and then connect the other charging hose to the vacuum pump. (3) Open the piezometer completely and operate for 10-15min to check if the pressure of piezometer remains in -0.1MPa. (4) Close the vacuum pump and maintain this status for 1-2min to check if the pressure of piezometer remains in -0.1MPa. If the pressure decreases, there may be leakage. (5) Remove the piezometer, open the valve core of liquid valve and gas valve completely with inner hexagon spanner. (6) Tighten the screw caps of valves and refrigerant charging vent.(As show in Fig.28)

1. Check after Installation

Check according to the following requirement after finishing

installation.

2. Test Operation

(1) Preparation of test operation

● The client approves the air conditioner installation.

● Specify the important notes for air conditioner to the client. (2) Method of test operation

● Put through the power, press ON/OFF button on the remote

controller to start operation.

● Press MODE button to select AUTO, COOL, DRY, FAN and HEAT to check whether the operation is normal or not.

● If the ambient temperature is lower than 16℃, the air

conditioner cant start cooling.

2. Leakage Detection

(1) With leakage detector: Check if there is leakage with leakage detector. (2) With soap water: If leakage detector is not available, please use soap water for leakage detection. Apply soap water at the suspected position and keep the soap water for more than 3min. If there are air bubbles coming out of this position, theres a leakage.

8.7 Vacuum Pumping and Leak Detection

8.8 Check after Installation and Test Operation

Fig.26

Fig.27

Fig.28

(1) The through-wall height of drain hose shouldnt be higher than the outlet pipe hole of indoor unit.(As show in Fig.25) (2) Slant the drain hose slightly downwards. The drain hose cant be curved, raised and uctuant, etc.(As show in Fig.26)

Note:

U-shaped curve

Wall

Drain hose

The drain hos

can't raise upwards

Fig.24

Fig.25

NO. Items to be checked Possible malfunction

Has the unit been installed rmly?

The unit may drop, shake or

emit noise.

Have you done the refrigerant leakage test?

It may cause insufcient cooling (heating) capacity.

Is heat insulation of pipeline sufcient?

It may cause condensation and

water dripping.

4 Is water drained well?

It may cause condensation and

water dripping.

Is the voltage of power supply according to the voltage marked on the nameplate?

It may cause malfunction or damage the parts.

Is electric wiring and pipeline installed

correctly?

It may cause malfunction or damage the parts.

Is the unit grounded securely?

It may cause electric leakage.

Does the power cord follow the specication?

It may cause malfunction or damage the parts.

Is there any obstruction in air inlet and air outlet?

It may cause insufcient cooling (heating) capacity.

The dust and sundries caused during installation are removed?

It may cause malfunction or damaging the parts.

The gas valve and liquid valve of connection pipe are open completely?

It may cause insufcient cooling (heating) capacity.

Is the inlet and outlet of piping hole been covered?

It may cause insufcient cooling (heating) capacity or waster

eletricity.

Installation and Maintenance

Service Manual

9. Maintenance

9.1 Error Code List

NO.

Malfunction

Name

Display Method of Indoor Unit

Display Method of Outdoor

Unit

A/C status Possible Causes

Dual-8

Code

Display

Indicator Display (during

blinking, ON 0.5s and OFF

0.5s)

Indicator has 3 kinds of

display status and during

blinking, ON 0.5s and OFF

0.5s

Operation

Indicator

Cool

Indicator

Heating

Indicator

Yellow

Indicator

Red

Indicator

Green

Indicator

High pressure

protection of system

During cooling and drying operation, except indoor fan operates, all loads stop

operation.

During heating operation, the complete unit stops.

Possible reasons:

1. Refrigerant was superabundant;

2. Poor heat exchange (including lth blockage of heat exchanger and bad radiating environment ); Ambient temperature is too high.

Antifreezing protection

OFF 3S and blink

3 times

During cooling and drying operation, compressor and outdoor fan stop while indoor

fan operates.

1. Poor air-return in indoor unit;

2. Fan speed is abnormal;

3. Evaporator is dirty.

System block

or refrigerant

leakage

OFF 3S

and

blink

9 times

The Dual-8 Code Display will show E3 until the low pressure switch stop operation.

1.Low-pressure protection

2.Low-pressure protection of

system

3.Low-pressure protection of

compressor

High discharge temperature

protection of compressor

OFF 3S

and blink

7 times

During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating operation, all loads stop.

Please refer to the malfunction analysis (discharge protection, overload).

Overcurrent

protection

OFF 3S

and blink

5 times

During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating operation, all loads stop.

1. Supply voltage is unstable;

2. Supply voltage is too low and load is too high;

3. Evaporator is dirty.

Communi-

cation

Malfunction

E6 OFF

During cooling operation, compressor stops while

indoor fan motor operates.

During heating operation, the complete unit stops.

Refer to the corresponding malfunction analysis.

High temperature

resistant protection

OFF 3S

and blink

6 times

During cooling operation: compressor will stop while

indoor fan will operate.

During heating operation, the complete unit stops.

Refer to the malfunction analysis (overload, high temperature

resistant).

EEPROM

malfunction

OFF 3S

and blink

11 times

During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

Replace outdoor control panel AP1

Limit/ decrease

frequency due to high temperature of module

All loads operate normally, while operation frequency for

compressor is decreased

Discharging after the complete unit is de-energized for 20mins, check whether the thermal grease on IPM Module of outdoor control panel AP1 is sufcient and whether the radiator is inserted tightly. If its no use, please replace control

panel AP1.

Malfunction

protection of

jumper cap

Wireless remote receiver and button are effective, but can not dispose the related

command

1. No jumper cap insert on mainboard.

2. Incorrect insert of jumper cap.

3. Jumper cap damaged.

4. Abnormal detecting circuit of mainboard.

Note:All models is except 18K

Installation and Maintenance

Service Manual

NO.

Malfunction

Name

Display Method of Indoor Unit

Display Method of Outdoor

Unit

A/C status Possible Causes

Dual-8

Code

Display

Indicator Display (during

blinking, ON 0.5s and OFF

0.5s)

Indicator has 3 kinds of

display status and during

blinking, ON 0.5s and OFF

0.5s

Operation

Indicator

Cool

Indicator

Heating

Indicator

Yellow

Indicator

Red

Indicator

Green

Indicator

Gathering

refrigerant

When the outdoor unit receive signal of Gathering refrigerant ,the system will be forced to run under cooling mode for gathering refrigerant

Nominal cooling mode

Indoor

ambient temperature

sensor is

open/short circuited

During cooling and drying operation, indoor unit operates while other loads will stop; during heating operation, the complete unit will stop

operation.

1. Loosening or bad contact of indoor ambient temp. sensor and mainboard terminal.

2. Components in mainboard fell down leads short circuit.

3. Indoor ambient temp. sensor damaged.(check with sensor resistance value chart)

4. Mainboard damaged.

Indoor

evaporator

temperature

sensor is

open/short

circuited

AC stops operation once

reaches the setting

temperature. Cooling, drying:

internal fan motor stops

operation while other loads

stop operation; heating: AC

stop operation

1. Loosening or bad contact of

Indoor

evaporator temp. sensor and mainboard terminal.

2. Components on the mainboard

fall

down leads short circuit.

3. Indoor evaporator temp. sensor damaged.(check temp. sensor value chart for testing)

4. Mainboard damaged.

Outdoor ambient temperature

sensor is

open/short circuited

OFF 3S

and

blink

6 times

During cooling and drying operating, compressor stops while indoor fan operates; During heating operation, the complete unit will stop

operation

Outdoor temperature sensor hasnt been connected well or is damaged. Please check it by referring to the resistance table for temperature sensor)

Outdoor

condenser

temperature

sensor is

open/short circuited

OFF 3S

and

blink

5 times

During cooling and drying operation, compressor stops while indoor fan will operate; During heating operation, the complete unit will stop

operation.

Outdoor temperature sensor hasnt been connected well or is damaged. Please check it by referring to the resistance table for temperature sensor)

Outdoor discharge temperature

sensor is

open/short circuited

OFF 3S

and

blink

7 times

During cooling and drying operation, compressor will sop after operating for about 3 mins, while indoor fan will operate; During heating operation, the complete unit will stop after operating for about 3 mins.

1.Outdoor temperature sensor hasnt been connected well or is damaged. Please check it by referring to the resistance table for temperature sensor)

2.The head of temperature sensor hasnt been inserted into the copper tube

Limit/ decrease

frequency due to overload

OFF 3S

and

blink

3 times

All loads operate normally, while operation frequency for

compressor is decreased

Refer to the malfunction analysis (overload, high temperature

resistant)

Decrease

frequency due to overcurrent

OFF 3S

and

blink

once

All loads operate normally, while operation frequency for

compressor is decreased

The input supply voltage is too low; System pressure is too high and overload

Installation and Maintenance

Service Manual

NO.

Malfunction

Name

Display Method of Indoor Unit

Display Method of Outdoor

Unit

A/C status Possible Causes

Dual-8

Code

Display

Indicator Display (during

blinking, ON 0.5s and OFF

0.5s)

Indicator has 3 kinds of

display status and during

blinking, ON 0.5s and OFF

0.5s

Operation

Indicator

Cool

Indicator

Heating

Indicator

Yellow

Indicator

Red

Indicator

Green

Indicator

Decrease

frequency

due to

high air

discharge

OFF 3S

and

blink

twice

All loads operate normally,

while

operation frequency for

compressor is decreased

Overload or temperature is too

high;

Refrigerant is insufcient;

Malfunction of electric expansion

valve (EKV)

Limit/

decrease

frequency

due to

antifreezing

OFF 3S

and

blink

4 times

All loads operate normally,

while operation frequency for

compressor is decreased

Poor air-return in indoor unit or fan

speed is too low

Voltage for

DC bus-bar

is too high

OFF 3S

and

blink

13 times

During cooling and drying

operation, compressor will stop

while indoor fan will operate;

During heating operation, the

complete unit will stop

operation.

1. Measure the voltage of position L and N on wiring board (XT), if the voltage is higher than 265VAC, turn on the unit after the supply voltage is increased to the normal range.

2.If the AC input is normal, measure the voltage of electrolytic capacitor C on control panel (AP1), if its normal, theres malfunction for the circuit, please replace the

control panel (AP1)

Voltage of

DC bus-bar

is too low

OFF 3S

and

blink

12 times

During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

1. Measure the voltage of position

L and N on wiring board (XT), if the

voltage is higher than 150VAC,

turn on the unit after the supply

voltage is increased to the normal

range.

2.If the AC input is normal,

measure the voltage of electrolytic

capacitor C on control panel (AP1),

if its normal, theres malfunction

for the circuit, please replace the

control panel (AP1)

Compressor Min

frequence in

test state

Showing during min. cooling or

min. heating test

Compressor rated

frequence in

test state

Showing during nominal cooling or nominal heating test

Compressor

maximum frequence in

test state

Showing during max. cooling or

max. heating test

Installation and Maintenance

Service Manual

NO.

Malfunction

Name

Display Method of Indoor Unit

Display Method of Outdoor

Unit

A/C status Possible Causes

Dual-8

Code

Display

Indicator Display (during

blinking, ON 0.5s and OFF

0.5s)

Indicator has 3 kinds of

display status and during

blinking, ON 0.5s and OFF

0.5s

Operation

Indicator

Cool

Indicator

Heating

Indicator

Yellow

Indicator

Red

Indicator

Green

Indicator

Compressor

intermediate

frequence in

test state

Showing during middle cooling or

middle heating test

Overcurrent

protection of

phase

current for

compressor

During cooling and drying

operation, compressor will stop

while indoor fan will operate;

During heating operation, the

complete unit will stop

operation.

Refer to the malfunction

analysis (IPM protection, loss

of synchronism protection and

overcurrent protection of phase

current for compressor.

Charging

malfunction

of capacitor

During cooling and drying

operation, compressor will stop

while indoor fan will operate;

During heating operation, the

complete unit will stop

Refer to the part three—charging malfunction analysis of capacitor

Malfunction

of module

temperature

sensor circuit

During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

Replace outdoor control panel AP1

Module high

temperature

protection

During cooling operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

After the complete unit is de-

energized for 20mins, check

whether the thermal grease on IPM

Module of outdoor control panel

AP1 is sufcient and whether the

radiator is inserted tightly. If its no

use, please replace control panel

AP1.

Overload

protection for compressor

OFF 3S

and blink

8 times

During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

operation.

1. Wiring terminal OVC-COMP

is loosened. In normal state, the resistance for this terminal should be less than 1ohm.

2.Refer to the malfunction analysis ( discharge protection, overload)

IPM

protection

OFF 3S

and blink

4 times

During cooling and drying

operation, compressor will stop

while indoor fan will operate;

During heating operation, the

complete unit will stop

operation.

Refer to the malfunction

analysis (IPM protection, loss

of synchronism protection and

overcurrent protection of phase

current for compressor.

Malfunction

of zero-cross

detection

circuit

U8 The complete unit stops

1.Power supply is abnormal;

2.Detection circuit of indoor control

mainboard is abnormal.

Installation and Maintenance

Service Manual

NO.

Malfunction

Name

Display Method of Indoor Unit

Display Method of Outdoor

Unit

A/C status Possible Causes

Dual-8

Code

Display

Indicator Display (during

blinking, ON 0.5s and OFF

0.5s)

Indicator has 3 kinds of

display status and during

blinking, ON 0.5s and OFF

0.5s

Operation

Indicator

Cool

Indicator

Heating

Indicator

Yellow

Indicator

Red

Indicator

Green

Indicator

Internal motor

(fan motor) do

not operate

Internal fan motor, external fan motor, compressor and electric heater stop operation,guide louver stops at present

location.

1. Bad contact of DC motor

feedback terminal.

2. Bad contact of DC motor

control end.

3. Fan motor is stalling.

4. Motor malfunction.

5. Malfunction of mainboard rev

detecting circuit.

Desynchro-

nizing of

compressor

During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

operation.

Refer to the malfunction

analysis (IPM protection, loss

of synchronism protection and

overcurrent protection of phase

current for compressor.

PFC

protection

OFF 3S

and blink

14 times

During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

operation.

Refer to the malfunction analysis

Outdoor DC

fan motor

malfunction

OFF 3S

and

blink

14 times

Outdoor DC fan motor malfunction lead to compressor stop operation,

DC fan motor malfunction or

system blocked or the connector

loosed

power protection

OFF 3S

and blink

9 times

compressor stop operation and

Outdoor fan motor will stop 30s latter , 3 minutes latter

fan motor and compressor will restart

To protect the electronical components when detect high

power

Indoor unit and outdoor unit doesnt match

OFF 3S

and blink

16 times

compressor and Outdoor fan motor cant work

Indoor unit and outdoor unit doesnt match

Failure startup

During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

operation.

Refer to the malfunction analysis

Normal

communica-

tion

contino-

usly

42 Defrosting

OFF 3S

and blink

once

(during

blinking,

ON 10s

and OFF

0.5s)

OFF 3S

and blink

twice

Defrosting will occur in heating

mode. Compressor will operate

while indoor fan will stop

operation.

Its the normal state

Installation and Maintenance

Service Manual

NO.

Malfunction

Name

Display Method of Indoor Unit

Display Method of Outdoor

Unit

A/C status Possible Causes

Dual-8

Code

Display

Indicator Display (during

blinking, ON 0.5s and OFF

0.5s)

Indicator has 3 kinds of

display status and during

blinking, ON 0.5s and OFF

0.5s

Operation

Indicator

Cool

Indicator

Heating

Indicator

Yellow

Indicator

Red

Indicator

Green

Indicator

Malfunction of

phase current

detection

circuit for

compressor

During cooling and drying

operation, compressor will stop

while indoor fan will operate;

During heating operation, the

complete unit will stop

Replace outdoor control panel AP1

Malfunction of

voltage

dropping for

DC bus-bar

During cooling and drying

operation, compressor will stop

while indoor fan will operate;

During heating operation, the

complete unit will stop

Supply voltage is unstable

Malfunction

of complete

units current

detection

During cooling and drying

operation, the compressor will

stop while indoor fan will

operate;

During heating operating,

the complete unit will stop

operation.

Theres circuit malfunction on

outdoor units control panel AP1,

please replace the outdoor units

control panel AP1.

The four-way

valve is

abnormal

If this malfunction occurs

during heating operation,

the complete unit will stop

operation.

1.Supply voltage is lower than

AC175V;

2.Wiring terminal 4V is loosened or

broken;

3.4V is damaged, please replace

4V.

Frequency

limiting

(power)

OFF 3S

and blink

13 times

Compressor

is open-

circuited

OFF 3S

and blink

once

The temperature for turning on the unit is reached

OFF 3S

and blink

8 times

Frequency

limiting

(module

temperature)

OFF 3S

and blink

11 times

Malfunction

of detecting

plate(WIFI)

Installation and Maintenance

Service Manual

If malfunction occurs,corresponding code will display and the unit will resume normal until protection or malfunction disappears.

Installation and Maintenance

Service Manual

Analysis or processing of some of the malfunction display:

1. Compressor discharge protection

Possible causes: shortage of refrigerant; blockage of air filter; poor ventilation or air flow short pass for condenser; the system

has noncondensing gas (such as air, water etc.); blockage of capillary assy (including lter); leakage inside four-way valve causes

incorrect operation; malfunction of compressor; malfunction of protection relay; malfunction of discharge sensor; outdoor temperature

too high.

Processing method: refer to the malfunction analysis in the above section.

2. Low voltage overcurrent protection

Possible cause: Sudden drop of supply voltage.

Processing method: Check if communication signal cable is connected reliably.

4. Sensor open or short circuit

Processing method: Check whether sensor is normal, connected with the corre sponding position on the controller and if damage of

lead wire is found.

5. Compressor over load protection

Possible causes: insufficient or too much refrigrant; blockage of capillary and increase of suction temp.; improper running of

compressor, burning in or stuck of bearing, damage of discharge valve; malfunction of protector.

Processing method: adjust refrigerant amount; replace the capillary; replace the compressor; use universal meter to check if the

contactor of compress or is ne when it is not overheated, if not replace the protector.

6. System malfunction

i.e.overload protection.When tube temperature(Check the temperature of outdoor heat exchanger when cooling and check the

temperatur e of indoor heat exchanger when heating) is too high, protection will be activated.

Possible causes: Outdoor temperature is too high when cooling; insufcient outdoor air circulation; refrigerant ow malfunction.

please refer to the malfunction analysis in the previous section for handling method .

7. IPM module protection

Processing method:Once the module malfunction happens,if it persists for a long time and can not be selfcanceled, cut off the power

and turn off the unit,and then re-energize the unit again after about 10 min.After repeating the procedure for sever times, if the

malfunction still exists,replace the module.

Installation and Maintenance

Service Manual

9.2 Procedure of Troubleshooting

Indoor unit (1) Malfunction of Temperature Sensor F1, F2

Main detection points:

● Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted?

● Is there short circuit due to trip-over of the parts?

● Is the temperature sensor broken?

● Is mainboard broken? Malfunction diagnosis process:

Is the wiring terminal between the

temperature sensor and the controller

loosened or poorly contacted?

Start

Insert the temperature

sensor tightly

Yes

Is malfunction

eliminated

Is malfunction

eliminated

Is malfunction

eliminated

Replace it with a

temperature sensor with

the same model

Make the parts upright

Is there short circuit due to trip-

over of the parts

Is the temperature sensor normal

according to the resistance table?

Replace the mainboard with

the same model.

End

Installation and Maintenance

Service Manual

(2) Malfunction of Blocked Protection of IDU Fan Motor H6

Main detection points:

● SmoothlyIs the control terminal of PG motor connected tightly?

● SmoothlyIs the feedback interface of PG motor connected tightly?

● The fan motor cant operate?

● The motor is broken?

● Detectioncircuit of the mainboard is dened abnormal? Malfunction diagnosis process:

Start

While power is off stir the blade

with a tool to see whether the

blade rotates smoothly

Check if the connection of PG

motor feedback terminal is rm

Check if the connection of PG

motor control terminal is rm

Turn on the unit again; measure

whether the output voltage on

control terminal for PG motor is

more than 50V within 1 min after

the louvers are opened

Tighten the screw; reassemble the blade, motor

and shaft bearing rubber base sub-assy to make

sure there is no foreign object between them

Yes

Is malfunction

eliminated

Is malfunction

eliminated

Is malfunction

eliminated

Is malfunction

eliminated

Is the motor started up

Replace PG motor

Replace the mainboard

with the same model

Measure the voltage of this foot to

neutral wire on the mainboard

End

Reinstall the blade

and motor correctly

Insert the control terminal

of PG motor tightly

Installation and Maintenance

Service Manual

(3) Malfunction of Protection of Jumper Cap C5

Main detection points:

● Is there jumper cap on the mainboard?

● Is the jumper cap inserted correctly and tightly?

● The jumper is broken?

● The motor is broken?

● Detection circuit of the mainboard is dened abnormal? Malfunction diagnosis process:

Start

Is there jumper cap on the mainboard?

Is the jumper cap inserted correctly

and tightly?

Replace the jumper cap with

the same model

Appearance of the

jumper cap

Assemble the jumper

cap with the same model

Insert the jumper

cap tightly

Is malfunction

eliminated

Is malfunction

eliminated

Is malfunction

eliminated

Replace the mainboard

with the same model

End

Yes

Installation and Maintenance

Service Manual

(4) Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8

Main detection points:

● Instant energization afte de-energization while the capacitordischarges slowly?

● The zero-cross detectioncircuit of the mainboard is dened abnormal? Malfunction diagnosis process:

Turn power off for

1minute,the turn

back on

The unit returns to normal. Conclusion:U8 is displayed due to power off/on while the capacitor discharges slowly.

U8 is still displayed

The zero-cross detection circuit

of the mainboard is dened

abnormal.Replace the mainboard

with the same model

Yes

Start

End

Installation and Maintenance

Service Manual

(5) Malfunction of detecting plate(WIFI) JF

Start

Is malfunction

eliminated

The end

check if the connection wire are correctly connected

Replace the

detecting

plate

with the same model

Replace the mainboard

with the same model

Yes

Installation and Maintenance

Service Manual

Outdoor unit: (1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel)

Main Check Points:

●Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC.

●Is the reactor (L) correctly connected? Is the connection loose or fallen? Is the reactor (L) damaged?

Fault diagnosis process:

Yes

Turn on the unit

and wait 1 minute

Use DC voltmeter

to measure the

voltage on the two

ends of electrolytic

capacitor

Voltage higher than 200V?

Fault with the voltage

testing circuit on

control panel AP1

Replace the control

panel AP1

Measure the AC voltage between terminal

L and N on wiring board

XT(power supply)

Voltage within

210VAC~250VAC?

Shut down the power and repair the power supply to restore the range 210VAC~250VAC

power on and restart the unit

If the fault is eliminated?

Shut down the power and wait 20 mi

nutes;

or use DC voltmeter to measure the voltage on the two ends of capacitor , until the voltage is lower than 20V

Check the

connection of reactor

(L in the Electrical

Wiring Diagram)

If the wiring of

reactor L

is normal?

Connect the reactor Laccording to Electrical Wiring Diagram correctly

Re-energize and turn on the unit

If the fault is eliminated?

End

Replace the control

panel AP1

Installation and Maintenance

Service Manual

(2) IPM Protection, Out-of-step Fault, Compressor Phase Overcurrent (AP1 below refers to the outdoor control panel)

Main check points:

●Is the connection between control panel AP1 and compressor COMP secure? Loose? Is the connection in correct order?

●Is the voltage input of the machine within normal range? (Use AC voltmeter to measure the voltage between terminal L and N on the

wiring board XT)

●Is the compressor coil resistance normal? Is the insulation of compressor coil against the copper tube in good condition?

●Is the working load of the machine too high? Is the radiation good?

●Is the charge volume of refrigerant correct?

Fault diagnosis process:

Installation and Maintenance

Service Manual

Energize and

switch on

IPM protection

occurs after the machine has run for a

eriod of time?

Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT)

If the voltage

between terminal L and N on wiring

board XT is within 210VAC~250VAC?

Check the supply voltage and restore it to

210VAC~250VAC

Voltage between

the two ends of celectrolytic

capacitor is

Restart the unit. Before

protection occurs,

use DC voltmeter to

measure the voltage

between the two

ends of electrolytic

capacitor on control

panel AP1

If the unit can

work

normally?

Please confirm:

1. If the indoor and outdoor heat exchangers are dirty? If they are

obstructed by other

objects which affect

the heat exchange of indoor and outdoor unit.

2. If the indoor and outdoor fans are working normally?

3. If the environment temperature is too high, resulting in that the system

pressure is too high

and exceeds the

permissible range?

4. If the charge volume of refrigerant is too much, resulting in that the system pressure is too high?

5. Other conditions resulting in that the

system pressure

becomes too high.

The connection

of capacitor C2

is loose.

Reconnect the capacitor C2 according to Electrical Wiring Diagram. Then, Restart the unit.

Stop the unit and disconnect the power supply. Wait 20 minutes, or use DC voltmeter to measure the voltage

between the two ends of

capacitor C2, until the

voltage is lower than 20V

Replace the capacitor C2. Then, energize

and start the unit.

Replace the

control panel AP1

Take corrective actions according to Technical Service Manual, and

then energize and start

the unit.

If there is any

abnormality

described above?

Replace the

control panel AP1

If the connection between AP1 and COMP is unsecure or the connection order is wrong?

Connect the control panel

P1 and compressor COMP correctly according to the Electrical Wiring Diagram. Then, energize and start the unit.

Use ohmmeter to measure the resistance between the three terminals on compressor COMP, and compare the measurements with the

compressor resistance on

Service Manual.

If the

resistance is

normal?

Use ohmmeter to measure the resistance between the two

terminals of compressor

COMP and copper tube.

Replace the

compressor

COMP

Resistance higher

than 500MΩ?

Replace the control panel

AP1

END

Yes

If the unit can

work normallv?

Yes

If the unit can

work normally?

Yes

If the unit can

work normally?

Yes

If the unit can

work

normally?

Yes

higher than 250V

Remove the wires on the two ends of capacitor C2. Then, use capacitance meter to measure the capacitor C2. Verify as per the Parameters Sheet.

Stop the unit and disconnect the power supply. Then, check the connection of capacitor C2 according to Electrical Wiring Diagram.

If capacitor C2 is failed?

Refer to the Electrical Wiring Diagram and check if the connection between AP1 and COMP is loose and if the connection order is correct.

Installation and Maintenance

Service Manual

(3) High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor unit)

Mainly detect:

●Is outdoor ambient temperature in normal range?

●Are the outdoor and indoor fans operating normally?

●Is the heat dissipation environment inside and outside the unit good?

Fault diagnosis process:

End

Yes

Overheat and high

temperature protection

Is outdoor ambient temperature higher than 53?

20 minutes after the complete

unit is powered off.

Is heat dissipation of the indoor unit

and outdoor unit abnormal?

Normal protection, please operate it after the outdoor ambient temperature is normalized.

Improve the heat dissipation environment of the unit

Does the outdoor fan work normally?

1. Check if the fan terminal OFAN is connected correctly

2. Resistance between any two terminals is measure by an ohm gauge and should be less than 1K Ohm.

Replace the control panel

AP1

Replace the fan

capacitor C1

Replace the outdoor fan

Installation and Maintenance

Service Manual

(4) Start-up failure (following AP1 for outdoor unit control board)

Mainly detect:

●Whether the compressor wiring is connected correct?

●Is compressor broken?

●Is time for compressor stopping enough?

Fault diagnosis process:

Yes

Power on the unit

Is stop time of the compressor

longer than 3 minutes?

Restart it up after 3 minutes

Does startup fail?

Are the wires for the compressor connected

correctly? Is connection sequence right?

Connect the wires as per the connection diagram

Replace the control panel AP1

If the fault is eliminated?

Replace the compressor

End

Installation and Maintenance

Service Manual

(5) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit)

Mainly detect:

●Is the system pressure too high?

●Is the input voltage too low?

Fault diagnosis process:

Out of step occurs once the

unit is powered on.

Is stop time of the

compressor longer than

3 minutes?

Are the wires for the compressor connected

correctly? Is connection sequence right?

Is the connection made in clockwise

direction?

Connect the

wires correctly

Replace the control

panel AP1

If the fault is eliminated?

Replace the compressor

End

Out of step occurs in

operation

Is the outdoor fan working

normally?

Is the outdoor unit blocked

by foreign objects?

Replace the

control panel AP1

If the fault is eliminated?

Replace the compressor

End

Check if the fan terminal

OFAN is connected correctly

Remove foreign objects

Replace the fan

capacitor C1

Replace the outdoor fan

Yes

Installation and Maintenance

Service Manual

(6) Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board)

Mainly detect:

●Is the PMV connected well or not? Is PMV damaged?

●Is refrigerant leaked?

Fault diagnosis process:

20 minutes after the

complete unit is

powered off

Is the terminal FA for the

electronic expansion valve

connected correctly?

Connect the

wires correctly

Resistances between the first four pins close to the terminal hole and the fifth pin are almost the same, less than 100 ohm.

Replace the electronic

expansion valve

If the fault is eliminated?

Replace the

control panel

AP1

Coolant leakage, refilling

the coolant

End

Yes

Installation and Maintenance

Service Manual

(7) Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the outdoor unit)

Mainly detect:

●Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken

Fault diagnosis process:

Yes

Start

Check wiring of the reactor (L) of the outdoor unit and the PFC capacitor

Whether there is any

damage or

short-circuit?

Replace it as per the

wiring diagram and

reconnect the wires

If the fault is eliminated?

Remove the PFC capacitor

and measure resistance

between the two terminals.

Is the resistance around zero?

The capacitor is

short circuited and

the capacitor should be replaced

Restart the unit

If the fault is eliminated?

Disconnect the terminals for the

reactor and measure the resistance

between the two terminals of the

reactor by an ohm gauge

Whether there is any damage

or short-circuit?

Replace the reactor

Restart the unit

If the fault is eliminated?

Replace the control

panel AP1

End

Yes

Installation and Maintenance

Service Manual

(8) Communication malfunction: (following AP1 for outdoor unit control board)

Mainly detect:

●Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged?

●Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any

damage?

Fault diagnosis process:

Yes

Start

Did the equipment operate normally before the failure

occurs?

The AP1 voltage detection circuit is at fault

Check wiring inside of the indoor and outdoor

units

Are wires broken?

Check the communication

circuit of the outdoor unit

If the fault is eliminated?

The communication

circuit is abnormal

Replace the main board of

the indoor unit

End

If the fault is eliminated?

Replace the main board

AP1 of the outdoor unit

If the fault is eliminated?

Is the connection right?

Check the wiring of the indoor and

outdoor units with reference to the

wiring diagram

Correctly connect the

corresponding wires for

the indoor and outdoor

units with reference to

the wiring diagram

Installation and Maintenance

Service Manual

(9) Malfunction of Overcurrent Protection

Main detection points:

● Is the supply voltage unstable with big uctuation?

● Is the supply voltage too low with overload?

● Hardware trouble? Malfunction diagnosis process:

Start

Is the supply voltage unstable

with big uctuation?

Normal uctuation should be within 10 % of the rated voltage on the nameplate

Adjust the supply voltage to maintain it within normal range

Clean the indoor and outdoor heat exchangers and remove the blockage of air inlet and outlet

Check the motor and reinstall the motor to have the fan run normally

Replace the mainboard with the same

model

Flush the heat exchangers with high pressure nitrogen

Replace the compressor

Replace the mainboard

with the same model

End

Is the supply voltage too low

with overload?

Is the indoor / outdoor

heat exchanger dirty,or are the air inlet

and outlet blocked?

The fan is abnormal? Fan

speed is too low or fan doesnt rotate

Measure the current of live wire on

the main board with a clamp ampere

meter. Is the current higher than the value of the overcurrent protection?

Is there blockage inside the system?

(Filth blockage, ice plug, greasy

blockage, the cut off valve hasnt been

opened completely)

Is the compressor running abnormally? Is there abnormal sound or oil leakage; Is the temperature of the shell too high,

etc.?

Is malfunction

eliminated

Is malfunction

eliminated

Is malfunction

eliminated

Is malfunction

eliminated

Is malfunction

eliminated

Is malfunction

eliminated

Is malfunction

eliminated

Yes Yes

Yes

No No

Installation and Maintenance

Service Manual

Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Set temperature is improper Observe the set temperature on remote controller Adjust the set temperature Rotation speed of the IDU fan

motor is set too low

Small wind blow Set the fan speed at high or medium

Filter of indoor unit is blocked Check the lter to see its blocked Clean the lter

Installation position for indoor unit and outdoor unit is improper

Check whether the installation postion is proper according to installation requirement for air

conditioner

Adjust the installation position, and install the rainproof and sunproof for outdoor unit

Refrigerant is leaking

Discharged air temperature during cooling is higher than normal discharged wind temperature; Discharged air temperature during heating is lower than normal discharged wind temperature; Units pressure is much lower than regulated

range

Find out the leakage causes and deal with it.

Add refrigerant.

Malfunction of 4-way valve Blow cold wind during heating Replace the 4-way valve

Malfunction of capillary

Replace the capillary

Flow volume of valve is insufcient

The pressure of valves is much lower than that stated in the specication

Open the valve completely

Malfunction of horizontal louver Horizontal louver cant swing

Refer to point 3 of maintenance method for

details

Malfunction of the IDU fan motor The IDU fan motor cant operate

Refer to troubleshooting for H6 for maintenance method in details

Malfunction of the ODU fan motor The ODU fan motor cant operate

Refer to point 4 of maintenance method for

details

Malfunction of compressor Compressor cant operate

Refer to point 5 of maintenance method for

details

9.3 Troubleshooting for Normal Malfunction

1. Air Conditioner Cant be Started Up

2. Poor Cooling (Heating) for Air Conditioner

3. Horizontal Louver Cant Swing

Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting

No power supply, or poor connection for power plug

After energization, operation indicator isnt bright and the buzzer cant give out sound

Conrm whether its due to power failure. If yes, wait for power recovery. If not, check power supply circuit and make sure the power plug is

connected well.

Wrong wire connection between indoor unit and outdoor unit,

or poor connection for wiring terminals

Under normal power supply circumstances, operation indicator isnt bright after energization

Check the circuit according to circuit diagram and connect wires correctly. Make sure all wiring terminals are connected rmly

Electric leakage for air conditioner

After energization, room circuit breaker trips off at

once

Make sure the air conditioner is grounded reliably Make sure wires of air conditioner is connected

correctly

Check the wiring inside air conditioner. Check whether the insulation layer of power cord is damaged; if yes, place the power cord.

Model selection for air switch is

improper

After energization, air switch trips off Select proper air switch

Malfunction of remote controller

After energization, operation indicator is bright, while no display on remote controller or buttons have no action.

Replace batteries for remote controller

Repair or replace remote controller

Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting

Wrong wire connection, or poor

connection

Check the wiring status according to circuit

diagram

Connect wires according to wiring diagram to

make sure all wiring terminals are connected rmly

Stepping motor is damaged Stepping motor cant operate Repair or replace stepping motor

Main board is damaged

Others are all normal, while horizontal louver cant

operate

Replace the main board with the same model

Installation and Maintenance

Service Manual

7. Abnormal Sound and Vibration

Possible causes Discriminating method (air conditioner status) Troubleshooting When turn on or turn off the unit, the panel and other parts will expand and theres abnormal sound

Theres the sound of "PAPA"

Normal phenomenon. Abnormal sound will disappear after a few minutes.

When turn on or turn off the unit, theres abnormal sound due to ow of refrigerant inside air

conditioner

Water-running sound can be heard

Normal phenomenon. Abnormal sound will disappear after a few minutes.

Foreign objects inside the indoor unit or therere parts touching together inside the indoor unit

Theres abnormal sound fro indoor unit

Remove foreign objects. Adjust all parts position of indoor unit, tighten screws and stick damping

plaster between connected parts Foreign objects inside the outdoor unit or therere parts touching together inside the outdoor unit

Theres abnormal sound fro outdoor unit

Remove foreign objects. Adjust all parts position

of outdoor unit, tighten screws and stick

damping plaster between connected parts Short circuit inside the magnetic

coil

During heating, the way valve has abnormal electromagnetic sound

Replace magnetic coil

Abnormal shake of compressor Outdoor unit gives out abnormal sound

Adjust the support foot mat of compressor,

tighten the bolts

Abnormal sound inside the

compressor

Abnormal sound inside the compressor

If add too much refrigerant during maintenance,

please reduce refrigerant properly. Replace

compressor for other circumstances.

6. Air Conditioner is Leaking

Possible causes Discriminating method (air conditioner status) Troubleshooting

Drain pipe is blocked Water leaking from indoor unit

Eliminate the foreign objects inside the drain

pipe

Drain pipe is broken Water leaking from drain pipe Replace drain pipe

Wrapping is not tight

Water leaking from the pipe connection place of indoor unit

Wrap it again and bundle it tightly

5. Compressor Cant Operate

Possible causes Discriminating method (air conditioner status) Troubleshooting

Wrong wire connection, or poor

connection

Check the wiring status according to circuit

diagram

Connect wires according to wiring diagram to

make sure all wiring terminals are connected

rmly

Capacity of compressor is damaged

Measure the capacity of fan capacitor with an universal meter and nd that the capacity is out of the deviation range indicated on the nameplate of

fan capacitor.

Replace the compressor capacitor

Power voltage is a little low or high

Use universal meter to measure the power supply voltage. The voltage is a little high or low

Suggest to equip with voltage regulator

Coil of compressor is burnt out

Use universal meter to measure the resistance between compressor terminals and its 0

Repair or replace compressor

Cylinder of compressor is blocked Compressor cant operate Repair or replace compressor

4. ODU Fan Motor Cant Operate

Possible causes Discriminating method (air conditioner status) Troubleshooting

Wrong wire connection, or poor

connection

Check the wiring status according to circuit

diagram

Connect wires according to wiring diagram to

make sure all wiring terminals are connected

rmly

Capacity of the ODU fan motor is

damaged

Measure the capacity of fan capacitor with an universal meter and nd that the capacity is out of the deviation range indicated on the nameplate of

fan capacitor.

Replace the capacity of fan

Power voltage is a little low or high

Use universal meter to measure the power supply voltage. The voltage is a little high or low

Suggest to equip with voltage regulator

Motor of outdoor unit is damaged

When unit is on, cooling/heating performance is bad and ODU compressor generates a lot of noise and heat.

Change compressor oil and refrigerant. If no

better, replace the compressor with a new one

Installation and Maintenance

Service Manual

10. Exploded View and Parts List

10.1 Indoor Unit

The component picture is only for reference; please refer to the actual product.

Installation and Maintenance

Service Manual

Above data is subject to change without notice.

NO.

Description

Part Code

Qty

L4VI32-09 L4VI32-12

1 Front Panel 20022479S 20022475S 1

2 Display Board 30565231 30565231 1

3 Front Case Assy 20022495 20022489 1

4 Helicoid Tongue 26112508 26112436 1

5 Left Axile Bush 10512037 10512037 1

6 Rear Case assy 20162010 00000100093 1

7 Drainage Hose 0523001408 05230014 1

8 Ring of Bearing 26152022 26152022 1

9 Evaporator Support 24212180 24212179 1

10 Cold Plasma Generator 1114001603 1114001603 1

11 Evaporator Assy 0100200004406 01100100245 1

12 Wall Mounting Frame 01252043 01252484 1

13 Cross Flow Fan 10352059 10352056 1

14 Fan Motor 150120874 15012146 1

15 Connecting pipe clamp 2611216401 2611216401 1

16 Rubber Plug (Water Tray) 76712012 76712012 1

17 Stepping Motor 1521212901 1521210701 1

18 Crank 73012005 73012005 1

19 Electric Box Assy 100002001192 100002001118 1

20 Axile Bush 10542036 10542036 1

21 Terminal Board 42011233 42011233 1

22 Jumper 4202021901 4202021905 1

23 Main Board 300002000288 300002000291 1

24 Electric Box Cover Sub-Assy 0140206501 0140206501 1

25 Shield Cover of Electric Box Cover 01592150 01592150 1

26 Electric Box Cover 20112207 2011220701 1

27 Power Cord / / /

28 Connecting Cable 4002052317 4002052317 0

29 Remote Controller 30510474 30510474 1

30 Capacitor CBB61 33010079 3301074712 1

31 Detecting Plate 30110144 30110144 1

Installation and Maintenance

Service Manual

10.2 Outdoor Unit

The component picture is only for reference; please refer to the actual product.

L4VO32-09

202122

Installation and Maintenance

Service Manual

Above data is subject to change without notice.

NO.

Description

Part Code

Qty

L4VO32-09

1 Electric Box Assy 100002002657 1

2 Electric Box 20113034 1

3 Main Board 300027000249 1

4 Reactor 43130184 1

5 Terminal Board 42010313 1

6 Wire Clamp 71010103 2

7 Front Grill 22413049 1

8 Front Panel 01533034P 1

9 Axial Flow Fan 10333004 1

10 Chassis Sub-assy 017000000134P 1

11 Brushless DC Motor 1501308507 1

12 Top Cover Sub-Assy 01253073 1

13 Motor Support 01703104 1

14 Condenser Assy 011002000372 1

15 Rear Grill 01473009 1

16 Capillary Sub-assy 030006000337 1

17 Cut off Valve 071302391 1

18 Big Handle 2623343106 1

19 Cut off Valve 071302391 1

20 Valve Support 01713142P 1

21 Right Side Plate Sub-Assy 01303178 1

22 4-Way Valve Assy 030152000171 1

23 Clapboard Sub-Assy 0123338502 1

24 Magnet Coil 4300040050 1

25 Compressor and Fittings 00103925G 1

26 Electrical Heater / /

27 Electrical Heater (Chassis) / /

28 Drainage Connecter 06123401 1

Installation and Maintenance

Service Manual

The component picture is only for reference; please refer to the actual product.

L4VO32-12

5 7

12 13

Installation and Maintenance

Service Manual

Above data is subject to change without notice.

NO.

Description

Part Code

Qty

L4VO32-12

1 Left Side Plate 01303200P 1

2 Fan Motor 1501308507 1

3 Motor Support 01703136 1

4 Condenser Assy 011002000359 1

5 Top Cover Sub-Assy 01253081 1

6 Rear Grill 01475014 1

7 Clapboard Sub-Assy 01233180 1

8 Compressor and Fittings 00103925G 1

9 Compressor Gasket 76710287 3

10 4-Way Valve Assy 030152000016 1

11 Big Handle 2623343106 1

12 Valve Cover 22243006 1

13 Cut off Valve 071302391 1

14 Cut off Valve 07130239 1

15 Valve Support 0171314201P 1

16 Front Grill 22413044 1

17 Cabinet 01433033P 1

18 Axial Flow Fan 10333011 1

19 Chassis Sub-assy 017000000091P 1

20 Electric Box Assy 100002001110 1

21 Electric Box 20113032 1

22 Main Board 300027000261 1

23 Reactor 43130184 1

24 Wire Clamp 71010103 2

25 Terminal Board 42010313 1

26 Electrical Heater / 1

27 Electrical Heater (Chassis) / 1

Installation and Maintenance

Service Manual

11. Removal Procedure

11.1 Removal Procedure of Indoor Unit

Caution: discharge the refrigerant

completely before removal.

Axile bush

Push out the axile bush on horizontal louver. Bend the horizontal louver with hand and then separate the horizontal louver from the crankshaft of step motor to remove it.

Horizontal louver

Location of step motor

ProcedureStep

1. Remove lter assembly

2. Remove horizontal louver

Front panel

Front

case

Right lter

Groove

Left lter

Open the front panel. Push the left lter and right lter until they are separate from the groove on the front panel. Remove the left lter and right lter respectively.

①

A1/B6/C2/C4 display: Screw off the 2 screws that are locking the display board. Separate the display board from the front

panel.

②

A2/A3 display: Screw off the 2 screws that are locking the display board. This display can be disassembled only after removing the front case (refer to step 5 of disassembly).

③

A5/B2/B4/B8/C6/D2 display: Screw off

the 2 screws that are locking the display board.

Separate the panel rotation shaft from the groove xing the front panel and then removes the front panel.

3. Remove panel

Panel

Screws

A2/A3 display

A5/B2/B4/B8/C6/D2 display

Front panel

Panel rotation

Groove

A1 display

09/12K

Installation and Maintenance

Service Manual

ProcedureStep

Remove the screws xing front case.

Note:

1.Open the screw caps before removing the screws around the air outlet.

2.The quantity of screws fixing the front case sub-assy is different for different

models.

Loosen the connection clasps between vertical louver and bottom case to remove vertical louver.

Loosen the connection clasps between front case sub-assy and bottom case. Lift up the front case sub-assy and take it out.

5. Remove front case sub-assy

6. Remove vertical louver

Front case sub-assy

Clasp

Screw caps

Screws

Screw

Vertical

louver

Vertical

louver

Clasps

Bottom case

Remove the screws xing detecting plate and remove detecting plate.

Remove the screws fixing electric box cober2 and remove electric box2.

4. Remove detecting plate and electric box cover2

Detecting plate

Installation and Maintenance

Service Manual

ProcedureStep

Loosen the connection clasps between shield cover of electric box sub-assy and electric box, and then remove the shield cover of electric box sub-assy. Remove the screw xing electric box assy .

①

Take off the water retaining sheet. Remove the cold plasma generator by screwing off the locking screw on the

generator.

②

Take off the indoor tube temperature

sensor.

③

Screw off 1 grounding screw.

④

Remove the wiring terminals of motor and

stepping motor.

⑤

Remove the electric box assy.

Twist off the screws that are locking each lead wire and rotate the electric box assy. Twist off the screws that are locking the wire clip. Loosen the power cord and remove its wiring terminal. Lift up the main board and take it off.

7. Remove electric box assy

Electric box

Electric box assy

Clasps

Shield cover of electric

box sub-assy

Cold plasma generator

Water retaining

sheet

Grounding screw

Screw

Power cord

Wire clip

Screw

Main board

Screw

Indoor tube temperature

sensor

Wiring terminal of motor

Wiring terminal of stepping motor

Screw

Installation and Maintenance

Service Manual

First remove the left side of the evaporator from the groove of bottom case and then remove the right side from the clasp on the bottom case.

Instruction: Some wiring terminal of this

product is with lock catch and other devices.

The pulling method is as below:

1.Remove the soft sheath for some terminals

at rst, hold the circlip and then pull out the

terminals.

2.Pull out the holder for some terminals at

rst (holder is not available for some wiring

terminal), hold the connector and then pull the

terminal.

circlip

soft sheath

holder

connector

ProcedureStep

Remove 3 screws xing evaporator assy.

8. Remove evaporator assy

Screws

Connection pipe clamp

Evaporator assy

Screw

Groove

Bottom case

Clasp

Connection pipe

At the back of the unit, remove the screw xing connection pipe clamp and then remove the connection pipe clamp.

Adjust the position of connection pipe on evaporator slightly and then lift the evaporator upwards to remove it.

Installation and Maintenance

Service Manual

ProcedureStep

Remove the screws fixing motor clamp and then remove the motor clamp.

Remove the screws at the connection place of cross flow blade and motor; lift the motor and cross flow blade upwards to remove them. Remove the bearing holder sub-assy. Remove the screw xing step motor and then remove the step motor.

Screws

Screw

Motor clamp

9. Remove motor and cross ow blade

Motor

Cross ow

Holder

sub-assy

Step motor

Screws

Installation and Maintenance

Service Manual

11.2 Removal Procedure of Outdoor Unit

2. Remove top panel

1. Remove big handle

L4VO32-09

Top panel

Right side plate

Big handle

Screw

Screws

Screw

the big handle upwards to make the clasp of big handle separate from the groove of right side plate, and then remove the big handle.

then remove the top panel.

ProcedureStep

Screws

Front grille

Remove connection screws between the front

grille and the front panel. Then remove the

front grille.

3. Remove front grille

Installation and Maintenance

Service Manual

Procedure

Step

Screws

Screw off the screws that are locking the front cover. Then take it off.

Front cover

4. Remove the front cover

5. Remove axial ow blade

Remove the nut xing axial ow blade and then remove the axial ow blade.

Nut

Axial ow blade

Installation and Maintenance

Service Manual

Right side plate

Electric box

assy

Remove the screws 2 fixing right side plate and then remove the right side plate.

Screws 2

Right side plate

Protective

grille

Screws 1

Screws 2

Remove the screws 1 fixing protective grille and then remove the protective

grille.

Remove the screws xing electric box assy ; pull out each wiring terminal; lift the electric box assy upwards to remove it.

Note:

When pulling out the wiring terminal, pay attention to loose the clasp and dont pull it so hard.

6. Remove protective grille and right side plate

7. Remove electric box assy

ProcedureStep

Installation and Maintenance

Service Manual

8. Remove 4-way valve assy

9. Remove capillary sub-assy

10. Remove motor and motor support

Unsolder the spot weld of 4-way valve assy, compressor and condenser, and then remove the 4-way valve assy .

Note:

When unsoldering the spot weld, wrap the 4-way valve with wet cloth completely to avoid damaging the valve due to high temperature.

Unsolder weld point of capillary Sub-assy,valve and outlet pipe of condensator. Thenremove the capillary Sub-assy. Do not blockthe capillary when unsoldering it. (Note: be-fore unsoldering,discharge refrigerantscompletely)

Remove the 4 tapping screws xing the motor. Pull out the lead-out wire and remove themotor. Remove the 2 tapping screws xingthe motor support. Lift motor support to re-move it.

ProcedureStep

4-way valve assy

Capillary Sub-assy

Motor support

Motor

Installation and Maintenance

Service Manual

ProcedureStep

Loosen the screws of the Clapboard Sub-

Assy .

The Clapboard Sub-Assy has a hook on thelower side. Lift and pull the Clapboard SubAssyto remove.

Remove the 3 footing screws of the compressorand remove the compressor.

11. Remove clapboard sub-assy

Liquid valve

Compressor

Gas valve

12. Remove Compressor

Remove the 2 screws xing the gas valve. Unsolder the welding spot connecting gas valveand air return pipe and remove the gas valve.(Note: it is necessary to warp the gas valve whenunsoldering the welding spot.) Remove the 2screws xing liquid valve. Unsolder the weld-ing spot connecting liquid valve and remove theliquid valve.

Clapboard

Installation and Maintenance

Service Manual

Procedure Steps

1.Remove big handle

2. Remove top cover

top cover

big handle

valve cover

Before disassamble

Remove the screws fixing big handle、valve cover and then remove them.

Remove the screws fixing top panel and then remove the top panel.

L4VO32-12

Installation and Maintenance

Service Manual

3.Remove grille 、protective grille and front panel

protective grille

5.Remove axial flow blade

4.Remove right side plate、left side plate

Remove connection screws between the front grille and the front panel. Then remove the front grille. Remove connection screws connecting the front panel with the chassis and the motor support, and then remove the front panel. Remove the screws fixing protective grille and then remove the protective grille.

Remove the nut fixing the blade and then remove the axial flow blade.

Remove the screws fixing right side plate、left side plate and then remove them.

grille

panel

axial flow blade

right side plate

left side plate

ProcedureStep

Installation and Maintenance

Service Manual

6.Remove motor and motor support

motor

motor support

8.Remove clapboard

clapboard

7.Remove electric box assy

electric box assy

Remove the screws fixing motor and then remove the motor. Remove the screws fixing motor support and then remove the motor support.

Remove the screws fixing clapboard and then remove the clapboard.

Remove the screws fixing electric box assy; cut off the tieline; pull out each wiring terminal; lift the electric box assy upwards to remove it. Note: When pulling out the wiring terminal, pay attention to loose the clasp and don’t pull it so hard.

ProcedureStep

Installation and Maintenance

Service Manual

9.Remove 4-way valve assy and capillary sub-assy

11.Remove compressor

10.Remove liquid valve and gas valve

Unsolder the welding joints connecting the 4-way valve assy with capillary sub-assy, compressor and condenser; remove the 4-way valve.

Note: Before unsoldering the welding joint, wrap the 4-way valve with a wet cloth completely to avoid damage to the valve caused by high temperature.

Remove the 3 footing screws of the compressor and remove the compressor. Remove the screws fixing valve support and then remove the valve support.

Unsolder the welding joint connecting the valve with capillary and condenser; unsolder the welding joint connecting the gas valve and air-return pipe; remove the 2 screws fixing the gas valve to remove the gas valve. Unsolder the welding joint connecting the liquid valve and Y-shaped pipe; remove the 2 screws fixing the liquid valve to remove the liquid valve. Note: Before unsoldering the welding joint, wrap the gas valve with a wet cloth completely to avoid damage to the valve caused by high temperature.

ProcedureStep

4-way valve assy

liquid valve

gas valve

compressor

valve support

Capillary Sub-assy

Unsolder weld point of capillary Sub-assy,valve and outlet pipe of condensator. Then remove the capillary Sub-assy. Do not block the capillary when unsoldering it. (Note: before unsoldering,discharge refrigerants completely)

Installation and Maintenance

Service Manual

Appendix:

1.Standard length of connection pipe

● 5m, 7.5m, 8m.

2.Min length of connection pipeFor the unit with standard connection pipe of 5m, there is no limitation for themin length of connection pipe. For the unit with standard connection pipe of 7.5m and 8m, the min length of connection pipe is 3m.

3.Max length of connection pipe（More details please refer to the specications

）

4.The additional refrigerant oil and refrigerant charging required after prolonging connection pipe

● After the length of connection pipe is prolonged for 10m at the basis of standard length, you should add 5ml of refrigerant oil for each additional 5m of connection pipe.

● The calculation method of additional refrigerant charging amount (on the basis of liquid pipe):

● Basing on the length of standard pipe, add refrigerant according to the requirement as shown in the table. The additional refrigerant charging amount per meter is different according to the diameter of liquid pipe. See Sheet 2.

● Additional refrigerant charging amount = prolonged length of liquid pipe X additional refrigerant charging amount per meter

Appendix 1: Reference Sheet of Celsius and Fahrenheit

Appendix 2: Conguration of Connection Pipe

Set temperature

Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32

Ambient temperature

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

32/33 32 0 55/56 55.4 13 79/80 78.8 26 34/35 33.8 1 57/58 57.2 14 81 80.6 27

36 35.6 2 59/60 59 15 82/83 82.4 28 37/38 37.4 3 61/62 60.8 16 84/85 84.2 29 39/40 39.2 4 63 62.6 17 86/87 86 30 41/42 41 5 64/65 64.4 18 88/89 87.8 31 43/44 42.8 6 66/67 66.2 19 90 89.6 32

45 44.6 7 68/69 68 20 91/92 91.4 33 46/47 46.4 8 70/71 69.8 21 93/94 93.2 34 48/49 48.2 9 72 71.6 22 95/96 95 35 50/51 50 10 73/74 73.4 23 97/98 96.8 36 52/53 51.8 11 75/76 75.2 24 99 98.6 37

54 53.6 12 77/78 77 25

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

Fahrenheit

display

temperature

（℉）

Fahrenheit

（℉）

Celsius

（℃）

61 60.8 16 69/70 69.8 21 78/79 78.8 26 62/63 62.6 17 71/72 71.6 22 80/81 80.6 27 64/65 64.4 18 73/74 73.4 23 82/83 82.4 28 66/67 66.2 19 75/76 75.2 24 84/85 84.2 29

68 68 20 77 77 25 86 86 30

Installation and Maintenance

Service Manual

F:Inspection

● Check the quality of expanding port. If there is any blemish, expand the port again according to the steps above.

The length is equal

Improper expanding

leaning

damaged

surface

crack uneven

thicknes

Smooth surface

Downwards

Pipe

Shaper

Union pipe

Pipe

Expander

Hard mold

Pipe

Pipe cutter

Leaning Uneven Burr

Improper pipe expanding is the main cause of refrigerant leakage.Please expand the pipe according to the following steps:

A:Cut the pip

● Conrm the pipe length according to the distance of indoor unit and outdoor unit.

● Cut the required pipe with pipe cutter.

B:Remove the burrs

● Remove the burrs with shaper and prevent the burrs from getting into the pipe.

C:Put on suitable insulating pipe

D:Put on the union nut

● Remove the union nut on the indoor connection pipe and outdoor valve; install

the union nut on the pipe.

E:Expand the port

● Expand the port with expander.

● "A" is different according to the diameter, please refer to the sheet below:

Outer diameter(mm)

A(mm)

Max Min

Ф6 - 6.35 (1/4") 1.3 0.7

Ф9.52 (3/8") 1.6 1.0 Ф12 - 12.70 (1/2") 1.8 1.0 Ф16 - 15.88 (5/8") 2.4 2.2

Appendix 3: Pipe Expanding Method

Note:

Additional refrigerant charging amount for R32

Diameter of connection pipe Indoor unit throttl Outdoor unit throttle

Liquid pipe Gas pipe

Cooling only,cooling

and heating(g / m)

Cooling only(g / m) Cooling and heating(g / m)

Ф6 Ф9.5 or Ф12 16 12 16

Ф6 or Ф9.5 Ф16 or Ф19 40 12 40

Ф12 Ф19 or Ф22.2 80 24 96 Ф16 Ф25.4 or Ф31.8 136 48 96 Ф19 / 200 200 200

Ф22.2 / 280 280 280

Note: The additional refrigerant charging amount in Sheet 2 is recommendedvalue, not compulsory.

Installation and Maintenance

Service Manual

Appendix 4: List of Resistance for Temperature Sensor

Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor (15K)

Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ)

-19 138.1 20 18.75 59 3.848 98 1.071

-18 128.6 21 17.93 60 3.711 99 1.039

-17 121.6 22 17.14 61 3.579 100 1.009

-16 115 23 16.39 62 3.454 101 0.98

-15 108.7 24 15.68 63 3.333 102 0.952

-14 102.9 25 15 64 3.217 103 0.925

-13 97.4 26 14.36 65 3.105 104 0.898

-12 92.22 27 13.74 66 2.998 105 0.873

-11 87.35 28 13.16 67 2.896 106 0.848

-10 82.75 29 12.6 68 2.797 107 0.825

-9 78.43 30 12.07 69 2.702 108 0.802

-8 74.35 31 11.57 70 2.611 109 0.779

-7 70.5 32 11.09 71 2.523 11 0 0.758

-6 66.88 33 10.63 72 2.439 111 0.737

-5 63.46 34 10.2 73 2.358 112 0.717

-4 60.23 35 9.779 74 2.28 11 3 0.697

-3 57.18 36 9.382 75 2.206 114 0.678

-2 54.31 37 9.003 76 2.133 115 0.66

-1 51.59 38 8.642 77 2.064 116 0.642

0 49.02 39 8.297 78 1.997 11 7 0.625

1 46.6 40 7.967 79 1.933 118 0.608

2 44.31 41 7.653 80 1.871 11 9 0.592

3 42.14 42 7.352 81 1.811 120 0.577

4 40.09 43 7.065 82 1.754 121 0.561

5 38.15 44 6.791 83 1.699 122 0.547

6 36.32 45 6.529 84 1.645 123 0.532

7 34.58 46 6.278 85 1.594 124 0.519

8 32.94 47 6.038 86 1.544 125 0.505

9 31.38 48 5.809 87 1.497 126 0.492

10 29.9 49 5.589 88 1.451 127 0.48

11 28.51 50 5.379 89 1.408 128 0.467

12 27.18 51 5.197 90 1.363 129 0.456

13 25.92 52 4.986 91 1.322 130 0.444

14 24.73 53 4.802 92 1.282 131 0.433

15 23.6 54 4.625 93 1.244 132 0.422

16 22.53 55 4.456 94 1.207 133 0.412

17 21.51 56 4.294 95 1.171 134 0.401

18 20.54 57 4.139 96 1.136 135 0.391

19 19.63 58 3.99 97 1.103 136 0.382

Installation and Maintenance

Service Manual

Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K)

Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ)

-19 181.4 20 25.01 59 5.13 98 1.427

-18 171.4 21 23.9 60 4.948 99 1.386

-17 162.1 22 22.85 61 4.773 100 1.346

-16 153.3 23 21.85 62 4.605 101 1.307

-15 145 24 20.9 63 4.443 102 1.269

-14 137.2 25 20 64 4.289 103 1.233

-13 129.9 26 19.14 65 4.14 104 1.198

-12 123 27 18.13 66 3.998 105 1.164

-11 116.5 28 17.55 67 3.861 106 1.131

-10 110.3 29 16.8 68 3.729 107 1.099

-9 104.6 30 16.1 69 3.603 108 1.069

-8 99.13 31 15.43 70 3.481 109 1.039

-7 94 32 14.79 71 3.364 110 1.01

-6 89.17 33 14.18 72 3.252 111 0.983

-5 84.61 34 13.59 73 3.144 112 0.956

-4 80.31 35 13.04 74 3.04 113 0.93

-3 76.24 36 12.51 75 2.94 114 0.904

-2 72.41 37 12 76 2.844 115 0.88

-1 68.79 38 11.52 77 2.752 116 0.856

0 65.37 39 11.06 78 2.663 117 0.833

1 62.13 40 10.62 79 2.577 118 0.811

2 59.08 41 10.2 80 2.495 11 9 0.77

3 56.19 42 9.803 81 2.415 120 0.769

4 53.46 43 9.42 82 2.339 121 0.746

5 50.87 44 9.054 83 2.265 122 0.729

6 48.42 45 8.705 84 2.194 123 0.71

7 46.11 46 8.37 85 2.125 124 0.692

8 43.92 47 8.051 86 2.059 125 0.674

9 41.84 48 7.745 87 1.996 126 0.658

10 39.87 49 7.453 88 1.934 127 0.64

11 38.01 50 7.173 89 1.875 128 0.623

12 36.24 51 6.905 90 1.818 129 0.607

13 34.57 52 6.648 91 1.736 130 0.592

14 32.98 53 6.403 92 1.71 131 0.577

15 31.47 54 6.167 93 1.658 132 0.563

16 30.04 55 5.942 94 1.609 133 0.549

17 28.68 56 5.726 95 1.561 134 0.535

18 27.39 57 5.519 96 1.515 135 0.521

19 26.17 58 5.32 97 1.47 136 0.509

Installation and Maintenance

Service Manual

Resistance Table of Discharge Temperature Sensor for Outdoor (50K)

Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ)

-29 853.5 10 98 49 18.34 88 4.75

-28 799.8 11 93.42 50 17.65 89 4.61

-27 750 12 89.07 51 16.99 90 4.47

-26 703.8 13 84.95 52 16.36 91 4.33

-25 660.8 14 81.05 53 15.75 92 4.20

-24 620.8 15 77.35 54 15.17 93 4.08

-23 580.6 16 73.83 55 14.62 94 3.96

-22 548.9 17 70.5 56 14.09 95 3.84

-21 516.6 18 67.34 57 13.58 96 3.73

-20 486.5 19 64.33 58 13.09 97 3.62

-19 458.3 20 61.48 59 12.62 98 3.51

-18 432 21 58.77 60 12.17 99 3.41

-17 407.4 22 56.19 61 11.74 100 3.32

-16 384.5 23 53.74 62 11.32 101 3.22

-15 362.9 24 51.41 63 10.93 102 3.13

-14 342.8 25 49.19 64 10.54 103 3.04

-13 323.9 26 47.08 65 10.18 104 2.96

-12 306.2 27 45.07 66 9.83 105 2.87

-11 289.6 28 43.16 67 9.49 106 2.79

-10 274 29 41.34 68 9.17 107 2.72

-9 259.3 30 39.61 69 8.85 108 2.64

-8 245.6 31 37.96 70 8.56 109 2.57

-7 232.6 32 36.38 71 8.27 110 2.50

-6 220.5 33 34.88 72 7.99 111 2.43

-5 209 34 33.45 73 7.73 11 2 2.37

-4 198.3 35 32.09 74 7.47 113 2.30

-3 199.1 36 30.79 75 7.22 114 2.24

-2 178.5 37 29.54 76 7.00 115 2.18

-1 169.5 38 28.36 77 6.76 116 2.12

0 161 39 27.23 78 6.54 11 7 2.07

1 153 40 26.15 79 6.33 11 8 2.02

2 145.4 41 25.11 80 6.13 11 9 1.96

3 138.3 42 24.13 81 5.93 120 1.91

4 131.5 43 23.19 82 5.75 121 1.86

5 125.1 44 22.29 83 5.57 122 1.82

6 119.1 45 21.43 84 5.39 123 1.77

7 113.4 46 20.6 85 5.22 124 1.73

8 108 47 19.81 86 5.06 125 1.68

9 102.8 48 19.06 87 4.90 126 1.64

NOTES

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WALL MOUNTED UNIT

AIR CONDITIONING SYSTEMS

INVENTOR L4VI32-09, L4VO32-09, L4VI32-12, L4VO32-12 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual