Technibel MAFX 96R5I, MAFX186R5I, MAFX246R5I, MAFX126R5I Service Manual

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Service Manual

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Models:MAFX 96R5I

MAFX126R5I MAFX186R5I

MAFX246R5I

Remote Controller:

YB1FB7

1. Summary

Indoor Unit:

Technical Information

Service Manual

Model

Product Code CB435N00400 CB435N00100

Rated Voltage V~ 220-240 220-240 Rated Frequency Hz 50 50 Phases 1 1 Cooling Capacity KW 2.6 3.5 Heating Capacity KW 2.8 3.67 Air Flow Volume (SH/H/M/L) m

/h 560/490/430/330 660/540/460/330 Dehumidifying Volume L/h 0.8 1.4 Fan Type Cross-ow Cross-ow Fan Diameter-height mm Ф98X580 Ф98X633.5

Fan Motor Speed (SH/H/M/L) Cool rpm 1300/1200/1050/800 1350/1200/1050/850 Fan Motor Speed (SH/H/M/L) Heat rpm 1300/1200/1050/900 1300/1150/1000/900 Fan Motor Power Output W 20 20 Fan Motor Running Current A 0.22 0.25 Fan Motor Capacitor μF 1 1.5 Evaporator Material Aluminum Fin-copper Tube Aluminum Fin-copper Tube Evaporator Pipe Diameter mm Ф5 Ф5 Evaporator Number of Rows 2 2

Evaporator Fin Pitch mm 1.4 1.4 Evaporator Length(L)XHeight(H)

XWidth(W)

mm 584X22.8X266.7 635X22.8X306.3

Motor Model MP24AA MP24BA Overload Protector / / Motor Full Load Amp(FLA) A 0.22 0.25 Sound Pressure Level (SH/H/M/L) dB (A) 39/36/32/26 42/39/33/26 Sound Power Level (SH/H/M/L) dB (A) 55/52/44/38 57/53/45/42

Outline Dimension (WXHXD) mm 790X275X200 845X289X209 Package Carton Dimension

(LXWXH)

mm 863X268X352 918X278X364

Package Dimension (LXWXH) mm 866X271X367 921X281X379 Net Weight kg 9 10 Gross Weight kg 11 12

Liquid pipe mm Φ6 Φ6 Gas Pipe(to indoor unit) mm Φ9.52 Φ9.52

Note: The connection pipe applies metric diameter.

2. Specications

2.1 Specication Sheet

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

MAFX126R5I

MAFX96R5I

Technical Information

Service Manual

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

Model Product Code CB435N00200 CB435N00300 Rated Voltage V~ 220-240 220-240 Rated Frequency Hz 50 50 Phases 1 1 Cooling Capacity KW 5.13 6.7 Heating Capacity KW 5.27 7.25 Air Flow Volume (SH/H/M/L) m

/h 800/720/610/520 1150/1000/900/800 Dehumidifying Volume L/h 1.8 2.1 Fan Type Cross-ow Cross-ow Fan Diameter-height mm Ф106X706 Φ108X830

Fan Motor Speed (SH/H/M/L) Cool rpm 1230/1130/1030/800 1250/1000/900/800 Fan Motor Speed (SH/H/M/L) Heat rpm 1350/1200/1050/900 1250/1000/900/850 Fan Motor Power Output W 35 35 Fan Motor Running Current A 0.35 0.35 Fan Motor Capacitor μF 2.5 3 Evaporator Material Aluminum Fin-copper Tube Aluminum Fin-copper Tube Evaporator Pipe Diameter mm Ф7 Ф7 Evaporator Number of Rows 2 2

Evaporator Fin Pitch mm 1.4 1.4 Evaporator Length(L)XHeight(H)XWidth(W) mm 715X25.4X304.8 845X25.4X342.9

Motor Model MP35CJ MP35CJ Overload Protector / / Motor Full Load Amp(FLA) A 0.35 0.35 Sound Pressure Level (SH/H/M/L) dB (A) 46/42/39/36 48/45/42/39 Sound Power Level (SH/H/M/L) dB (A) 58/54/51/48 64/59/56/53

Outline Dimension (WXHXD) mm 970X300X224 1078X325X246 Package Carton Dimension (LXWXH) mm 1038X380X305 1145X410X335 Package Dimension (LXWXH) mm 1041X383X320 1148X413X350 Net Weight kg 13.5 17 Gross Weight kg 16.5 20.5

Liquid pipe mm Φ6 Φ6 Gas Pipe(to indoor unit) mm Φ12 Φ16

Note: The connection pipe applies metric diameter.

MAFX186R5I

MAFX246R5I

Technical Information

Service Manual

2.2 Noise Criteria Curve Tables for Both Models

Noice/dB(A)

Low Middle High Super High

Indoor Fan Motor Rotating Speed

07K

12K

24K

18K

Technical Information

Service Manual

09K

12K

18K

24K

150

168.5 462 159.5

Φ55

181685104

206

Ф70

685

187

Ф55

Ф70

190

181

154

131 542172

143

Ф5 5

3. Outline Dimension Diagram

Unit:mm

Model W H D

09K 790 275 200 12K

845 289 209 18K 970 300 224 24K 1078 325 246

Technical Information

Service Manual

4. Refrigerant System Diagram

outdoor

indoor

filter

A heat exchanger

gas -liquid separator

inverter compressor

discharge silencer

discharge temperature sensor

4-way valve

outdoor heat exchanger

fan

high pressure switch

B heat exchanger

C heat exchanger

D heat exchanger

filter

A1:A

unit electronic expansion valve B1:B-unit electronic expansion valve C1:C-unit electronic expansion valve D1:D-unit electronic expansion valve A2:A-unit gas pipe temperature sensor B2:B-unit gas pipe temperature sensor C2:C-unit gas pipe temperature sensor D2:D-unit gas pipe temperature sensor A3:A unit liquid pipe temperature sensor B3:B-unit liquid pipe temperature sensor C3:C-unit liquid pipe temperature sensor D3:D-unit liquid pipe temperature sensor

Technical Information

Service Manual

5. Electrical Part

5.1 Wiring Diagram

● 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.

Technical Information

Service Manual

These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.

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● Indoor Unit

MAFX_96-126-186-246_R5I

Technical Information

Service Manual

5.2 PCB Printed Diagram

● Top view

● Bottom view

45 67 891011

No. Name

1 Live wire 2 Communication port 3 Fuse

Neutral wire for healthy function (only for the mode with health

function) 5 Neutral wire 6 Needle stand for motor interface

Live wire for health function

(only for the model with this

function) 8 Jumper cap 9 Auto button

Interface of up&down swing

11 Feedback terminal of motor

Needle stand of temperature

sensor

13 Display interface

Technical Information

Service Manual

6. Function and Control

6.1 Remote Controller Introduction

Introduction for icons on display screen

Introduction for buttons on remote controller

Send signal Turbo mode

8ć heating function

Set temperature

WiFi(This unit is without WiFi function)

Set time

TIMER ON / TIMER OFF

Child lock

Up & down swing

Set fan speed

Light

Temp. display type

:Set temp.

:Outdoor ambient temp.

:Indoor ambient temp.

Sleep mode

Clock

Heat mode

Fan mode

Dry mode

Cool mode

Auto mode

Operation mode

I feel

Note:

● After putting through the power, the air conditioner will give out a sound. Operation indictor "

" is ON (red indicator). After that,

you can operate the air conditioner by using remote controller.

●

Under ON status, pressing the button on the remote controller, the signal icon " "

on the display of remote controller will blink once

and the air conditioner will give out a “de” sound, which means the signal has been sent to the air conditioner.

● Under OFF status, set temperature and clock icon will be displayed on the display of remote controller (If timer ON, timer OFF and light functions are set, the corresponding icons will be displayed on the display of remote controller at the same

time); Under ON

status, the display will show the corresponding set function icons.

ON/OFF button

▲ button

▼ button

MODE

FAN button

SWING button

I FEEL button

HEALTH/AIR button

SLEEP button

10.

TEMP button

11.

TIMER ON button

12.

CLOCK button

13.

TIMER OFF button

14.

TURBO button

15.

X-FAN/LIGHT button

Technical Information

Service Manual

1. ON/OFF button

2. MODE button

3. F

AN button

Press this button can turn on or turn off the air conditioner. After turning on the air conditioner, operation indicator "

"on indoor unit’s

display is ON (green indicator. The colour is different for different models), and indoor unit will give out a sound.

● When selecting auto mode, air conditioner will operate automatically according to factory setting. Set temperature can’t be adjusted and will not be displayed as well. Press "FAN" button can adjust fan speed. Press "SWING" button can adjust fan blowing angle.

● After selecting cool mode, air conditioner will operate under cool mode. Cool indicator " "on indoor unit is ON. Press "▲" or " ▲ " button to adjust set temperature. Press "FAN" button to adjust fan speed. Press "SWING" button to adjust fan blowing angle.

● When selecting dry mode, the air conditioner operates at low speed under dry mode. Dry indicator "

" on indoor unit is ON. Under dry

mode, fan speed can’t be adjusted. Press "SWING" button to adjust fan blowing angle.

● When selecting fan mode, the air conditioner will only blow fan, no cooling and no heating. All indicators are OFF. Press "FAN" button to adjust fan speed. Press "SWING" button to adjust fan blowing angle.

● When selecting heating mode, the air conditioner operates under heat mode. Heat indicator "

" on indoor unit is ON. Press "▲" or " ▲ "

button to adjust set temperature. Press "FAN" button to adjust fan speed. Press "SWING" button to adjust fan blowing angle. (Cooling only unit won’t receive heating mode signal. If setting heat mode with remote controller, press ON/OFF button can’t start up the unit).

Note:

● For preventing cold air, after starting up heating mode, indoor unit will delay 1~5 minutes to blow air (actual delay time is depend on indoor ambient temperature).

● Set temperature range from remote controller: 16~30ć (60.8~86.0

F); Fan speed: auto, low speed, medium speed, high speed.

5. TURBO button

Under COOL or HEAT mode, press this button to turn to quick COOL or quick HEAT mode. "

" icon is displayed on remote controller.

Press this button again to exit turbo function and "

" icon will disappear.

6. ▲/▲ button

● Press "▲" or "

▲

" button once increase or decrease set temperature 1OC(1OF). Holding "▲" or "▲" button, 2s later, set temperature

on remote controller will change quickly. On releasing button after setting is finished, temperature indicator on indoor unit will change accordingly. (Temperature can’t be adjusted under auto mode)

● When setting TIMER ON, TIMER OFF or CLOCK, press "▲" or "▲" button to adjust time. (Refer to CLOCK, TIMER ON, TIMER OFF buttons) When setting TIMER ON, TIMER OFF or CLOCK, press "▲" or "▲" button to adjust time. (Refer to CLOCK, TIMER ON, TIMER OFF buttons)

Caution:

● Under AUTO speed, air conditioner will select proper fan speed automatically according to factory setting.

● Fan speed under dry mode is low speed.

Pressing this button can set fan speed circularly as: auto (AUTO), low(

) ,medium( ), high( ).

Press this button to select your required operation mode.

AUTO COOL FANDRY HEAT

Auto

4. SWING button

Press this button can select up&down swing angle. Fan blow angle can be selected circularly as below:

● When selecting "

", air conditioner is blowing fan automatically. Horizontal louver will automatically swing up & down at maximum angle.

● When selecting " ǃ ǃ ǃ

● When selecting " ǃ

● Hold " "button above 2s to set your required swing angle. When reaching your required angle, release the button.

Note:

● " ǃ ǃ " may not be available. When air conditioner receives this signal, the air conditioner will blow fan automatically.

no display

(horizontal louvers stops at current position)

Technical Information

Service Manual

7. SLEEP button

9. I FEE

L button

10. LIGHT button

1. CLOCK button

12. TIMER ON / TIMER OFF button

Under COOL, HEAT or DRY mode, press this button to start up sleep function. "

" icon is displayed on remote controller. Press this button

again to cancel sleep function and "

" icon will disappear.

Press this button to start I FEEL function and "

" will be displayed on the remote controller. After this function is set, the remote controller

will send the detected ambient temperature to the controller and the unit will automatically adjust the indoor temperature according to the

detected temperature. Press this button again to close I FEEL function and "

" will disappear.

● Please put the remote controller near user when this function is set. Do not put the remote controller near the object of high

temperature

or low temperature in order to avoid detecting inaccurate ambient temperature.

Press this button to turn off display light on indoor unit. "

" icon on remote controller disappears. Press this button again to turn on

display light. "

" icon is displayed.

Press this button to set clock time. "

" icon on remote controller will blink. Press "▲" or "▲" button within 5s to set clock time. Each

pressing of "▲" or "

▲ " button, clock time will increase or decrease 1 minute. If hold "▲" or "▲" button, 2s later, time will change quickly.

" icon stops blinking.

Note:

● Clock time adopts 24-hour mode.

● The interval between two operation can’t exceeds 5s. Otherwise, remote controller will quit setting status. Operation for TIMER ON/TIMER OFF is the same.

● TIMER ON button "TIMER ON" button can set the time for timer on. After pressing this button, "

" icon disappears and the word "ON" on remote controller

blinks. Press "▲" or "

▲ "button to adjust TIMER ON setting. After each pressing "▲" or "▲" button, TIMER ON setting will increase or

decrease 1min. Hold "▲" or "

▲ " button, 2s later, the time will change quickly until reaching your required time. Press "TIMER ON" to

" icon resumes displaying. Cancel TIMER ON: Under the condition that TIMER ON is

started up, press "TIMER ON" button to cancel it.

● TIMER OFF button "TIMER OFF" button can set the time for timer off. After pressing this button,"

" icon disappears and the word "OFF" on remote

controller blinks. Press "▲" or "

▲ " button to adjust TIMER OFF setting. After each pressing "▲" or "▲" button,

TIMER OFF setting will increase or decrease 1min. Hold "▲" or "

▲ " button, 2s later, the time will change quickly until reaching your

required time. Press "TIMER OFF" word "OFF" will stop blinking. "

" icon resumes displaying. Cancel TIMER OFF. Under the condition

that TIMER OFF is started up, press "TIMER OFF" button to cancel it.

Note:

● Under on and off status, you can set TIMER OFF or TIMER ON simultaneously.

● Before setting TIMER ON or TIMER OFF, please adjust the clock time.

● After starting up TIMER ON or TIMER OFF, set the constant circulating valid. After that, air conditioner will be turned on or turned off according to setting time. ON/OFF button has no effect on setting. If you don’t need this function, please use remote controller to cancel it.

8. TEM

P button

By pressing this button, you can see indoor set temperature, indoor ambient temperature or outdoor ambient temperature on indoor unit’s display. The setting on remote controller is selected circularly as below:

● When selecting "

" or no display with remote controller, temperature indicator on indoor unit displays set temperature.

● When selecting "

" with remote controller, temperature indicator on indoor unit displays indoor ambient temperature.

● When selecting "

" with remote controller, temperature indicator on indoor unit displays outdoor ambient temperature.

Note:

●

Outdoor temperature display is not available for some models. At that time, indoor

unit receives " "signal, while it displays indoor set

temperature.

● It’s defaulted to display set temperature when turning on the unit.There is no display in the remote controller.

● Only for the models whose indoor unit has dual-8 display.

● When selecting displaying of indoor or outdoor ambient temperature, indoor temperature indicator displays corresponding temperature and

no display

Technical Information

Service Manual

Function introduction for combination buttons

Operation guide

Replacement of batteries in remote controller

1. Energy-saving function

After putting through the power, press "ON/OFF" button on remote controller to turn on the air conditioner.

2. Press "MODE" button to select your required mode: AUTO, COOL, DRY, FAN, HEAT.

3. Press "▲" or "

▲ " button to set your required temperature. (Temperature can’t be adjusted under auto mode).

4. Press "FAN" button to set your required fan speed: auto, low, medium and high speed.

5. Press "SWING" button to select fan blowing angle.

● During operation, point the remote control signal sender at the receiving window on indoor unit.

●

The distance between signal sender and receiving window should be no more than 8m, and there should be no obstacles between them.

indoor unit during operation.

● Replace new batteries of the same model when replacement is required.

● When you don’t use remote controller for a long time, please take out the batteries.

● If the display on remote controller is fuzzy or there’s no display, please replace batteries.

2. 8

heating function

3. Child lock function

4. T

emperature display switchover function

5. About WIFI function(This unit is without WiFi function)

Under cooling mode, press "TEMP" and " CLOCK" buttons simultaneously to start up or turn off energy-saving function. When energy-saving function is started up, "SE" will be shown on remote controller, and air conditioner will adjust the set temperature automatically according to factory setting to reach to the best energy-saving effect. Press "TEMP" and "CLOCK"buttons simultaneously again to exit energy-saving function.

Note:

● Under energy-saving function, fan speed is defaulted at auto speed and it can’t be adjusted.

●

Under energy-saving function, set temperature can’t be adjusted. Press "TURBO"

button and the remote controller won’t send signal.

● Sleep function and energy-saving function can’t operate at the same time. If energy-saving function has been set under cooling mode, press sleep button will cancel energy-saving function. If sleep function has been set under cooling mode, start up the energy-saving function will cancel sleep function.

Under heating mode, press "TEMP" and "CLOCK" buttons simultaneously to start

up or turn off 8ć heating function. When this function is

started up, "

" and "8ć" will be shown on remote controller, and the air conditioner keep the heating status

at 8ć. Press "TEMP" and

"CLOCK" buttons simultaneously again to exit 8ćheating function.

Note:

● Under 8ć heating function, fan speed is defaulted at auto speed and it can’t be adjusted.

● Under 8ć heating function, set temperature can’t be adjusted. Press

TURBO" button and the remote controller won’t send signal.

● Sleep function and 8ć heating function can’t operate at the same time. If 8ćheating function has been set under cooling mode, press sleep button will cancel 8ć heating function. If sleep function has been set under cooling mode, start up the 8ć heating function will cancel sleep function.

● Under  temperature display, the remote controller will display 46 heating.

Press "▲" and "

▲ " simultaneously to turn on or turn off child lock function. When child lock function is on, " " icon is displayed on remote

controller. If you operate the remote controller, the "

" icon will blink three times without sending signal to the unit.

Under OFF status, press "

▲ " and "MODE" buttons simultaneously to switch temperature display between ć and .

Press "MODE" and "TURBO" button simultaneously to turn on or turn off WIFI function. When WIFI function is turned on, the " WIFI " i

con will be displayed on remote controller; Long press "MODE" and "TURBO" buttons simultaneously for 10s, remote controller will send WIFI reset code and then the WIFI function will be turned on. WIFI function is defaulted ON after energization of the remote controller.

1. Press the back side of remote controller marked with "

out

the cover of battery box along the arrow direction.

2. Replace two 7# (AAA 1.5V) dry batteries, and make sure the position of "+" polar and "-" polar are correct.

3. Reinstall the cover of battery box.

Note:

signal sender battery

Cover of battery box

remove

reinstall

Technical Information

Service Manual

6.2 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 there’s 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 can’t 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.

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)Compulsory defrosting function

(1) Start up compulsory defrosting function

Under ON status, set heating mode with remote controller and adjust the temperature to 16OC. Press “+, -, +, -, +,-” button successively

within 5s and the complete unit will enter into compulsory defrosting status. Meanwhile, heating indicator on indoor unit will ON 10s and OFF

0.5s successively. (Note: If complete unit has malfunction or stops operation due to protection, compulsory defrosting function can be started

up after malfunction or protection is resumed.

(2)Exit compulsory defrosting mode

After compulsory defrosting is started up, the complete unit will exit defrosting operation according to the actual defrosting result, and the

complete unit will resume normal heating operation.

(10)Refrigerant recovery function (applicable for moving the unit or maintaining the unit)

(1) Start up refrigerant recovery function

Set cooling mode with remote controller within 5min after energization, adjust temperature at 16OC and press light button on remote

controller for 3 times successively to any one indoor unit within 3s and then the complete unit will enter into refrigerant recovery status. All

indoor units display Fo. Maintenance person close all liquid valves. After 5min, withstand the thimble of all checking valves with tools one by

one. If there’s no refrigerant spraying out, close corresponding valve immediately, turn off the unit with remote controller and then remove the

connection pipe.

(2) Exit refrigerant recovery function

During refrigerant recovery process, if any one indoor unit receives any remote control signal or refrigerant recovery function has operates

for about 25min, refrigerant recovery function will be exited automatically. If the complete unit is at standby status before refrigerant recovery,

the complete unit will still at standby status after refrigerant recovery. If the complete unit is at ON status, the unit will operate according to

original operation mode.

(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 compressor’s minimum stop time. The original minimum stop time is 180s and then we change to:

The time interval between two start-ups of compressor can’t be less than 180+T s(0≤T≤15). T is the variable of controller. That’s 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) 8º heating function

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

(17)Mode shock

When there’s indoor unit under operation, if start up other indoor unit and the setting mode is inconsistent with that indoor unit, mode shock

will occur. The indoor with mode shock displays “E7” and indoor fan stops operation. Corresponding relationship for mode shock and

operation status after shock is as below:

Technical Information

Service Manual

Mode relationship table for mode shock:

Mode Indoor unit with

mode shock

Operation status after mode shock

Indoor unit A Indoor unit B Indoor unit A Indoor unit B Cooling/drying heating Indoor unit B Cooling/drying Indoor fan stops operation

Heating Cooling, drying, fan Indoor unit B Heating Indoor fan stops operation Fan Heating Indoor unit A Indoor fan stops operation Heating

Note: (1) Indoor unit A: The indoor unit under operation currently

(2) Indoor unit B: The indoor unit is tuned on latter

(3) If set auto mode with remote controller, the complete unit will judge according to actual operation mode under auto mode.

Installation and Maintenance

Service Manual

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 can’t 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 can’t be pressed by hard objects.

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

replaced by a qualied person.

1. Avoid contact between refrigerant and re as it generates

poisonous gas; Prohibit prolong the connection pipe by welding.

2. Apply specied refrigerant only. Never have it mixed with

any other refrigerant. Never have air remain in the refrigerant line as it may lead to rupture or other hazards.

3. Make sure no refrigerant gas is leaking out when installation is completed.

4. If there is refrigerant leakage, please take sufficient measure to minimize the density of refrigerant.

5. Never touch the refrigerant piping or compressor without wearing glove to avoid scald or frostbite.

Warnings

Refrigerant Safety Precautions:

Improper installation may lead to re hazard, explosion,

electric shock or injury.

Installation Safety Precautions:

Part

Ⅱ

: Installation and Maintenance

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; don’t 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

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

Drainagepipe

At least250cm

At least 15cm

At leas

t 3

00cm

Spacetothe

Spacetothe ceiling

Space t

o t

he obstruction

At least15cm

At least 15cm

Spacetothe wall

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 procedures

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)

Owner’s manual,

remote controller

7 Wall pipe

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) For appliances with type Y attachment,the instructions shall contain the substance of thefollowing.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.

8.2 Installation Parts-checking

8.3 Selection of Installation Location

8.4 Electric Connection Requirement

8.5 Installation of Indoor Unit

1.Please contact the local agent for installation.

2.Don't 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. 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 can't 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)

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 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

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 andwon't 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 won't increase noise and vibration. (6)

The appliance must be installed 2.5m above oor.

(7) Don't install the indoor unit right above the electric

appliance.

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

Note:

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.

Installation and Maintenance

Service Manual

Left

Rear left

Right

Rear right

Cut off the hole

Left Right

5-10

Φ55/70mm

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 Φ55/70mm 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:

Insulating pipe

Torque wrench

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)

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

Left

Wall

Φ55/70mm

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

Φ55/70mm

Rear piping hole

Left

Wall

Φ55

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

Φ55

Rear piping hole

Outlet pipe

Drain hos

Drain hose

Tape

Outlet pipe

Drain hose

Insulating pipe

(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:

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

(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) All wires of indoor unit and outdoor unit should be

connected by a professional.

(1) The power cord and control wire can't 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.

(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

wiring cover

screw

panel

N(1) 23

blue brownblack

yellowgreen

Outdoor unit connection

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)

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

Installation and Maintenance

Service Manual

NO. Items to be checked Possible malfunction

1 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.

3 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.

7 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).

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.

1. Check after Installation

Check according to the following requirement after nishing installation.

8.8 Check after Installation and Test Operation

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 can’t start cooling.

Installation and Maintenance

Service Manual

9. Maintenance

9.1 Error Code

1. Malfunction display requirement

When there are several malfunctions, they will be displayed circularly.

2. Malfunction display method

(1) Hardware malfunction: immediate display; refer to “error code list”; (2) Operation state: immediate display; refer to “error code list”; (3) Other malfunctions: it is displayed after the compressor stops for 200s; refer to “error code list”.

Note: when the compressor is restarted, the malfunction display delay time (200s) is cleared.

3. Malfunction display control

The indicator lamp and dual 8 nixie tube displays shall be synchronized. That is when the indicator lamp blinks, the dual 8 nixie tube displays the corresponding malfunction code.

4. Display control viaremote controller

Enter display control: press light button successively for 4 times within 3s to display the corresponding malfunction code; Exit display control: pressing light button successively for 4 times within 3s or after display is shown for 5min, the display will

terminate.

Error Code List

Malfunction Name Malfunction types

Dual-8

Nixie Tube

Indicator Display

Operation

indicator

Cooling

indicator

Heating

indicator

Fault in input power zero Hardware malfunction U8 blink 17 times Jumper cap malfunction protection Hardware malfunction C5 blink 15 times

No feedback of indoor fan motor

Hardware malfunction

H6 blink 11 times

Indoor ambient sensor open or short circuit Hardware malfunction F1 blink once Indoor tube sensor open or short circuit Hardware malfunction F2 blink twice

Inlet tube sensor malfunction Hardware malfunction b5 blink 19 times Outlet tube sensor malfunction Hardware malfunction b7 blink 22 times IPM sensor circuit malfunction Hardware malfunction P7 blink 18 times Outdoor ambient sensor open or short circuit Hardware malfunction F3 blink 3 times Inlet pipe temperature sensor of outdoor

condenser is open-circuit/short circuit(commercial

air con)

Hardware malfunction A5

Outdoor tube sensor open or short circuit Hardware malfunction F4 blink 4 times outlet pipe temperature sensor of outdoor

condenser is open-circuit/short circuit(commercial

air con)

Hardware malfunction A7

Exhaust sensor open or short circuit Hardware malfunction F5 blink 5 times Communication failure between indoor unit and outdoor unit

Hardware malfunction E6 blink 6 times

Compressor phase current detection circuit

malfunction

Hardware malfunction U1 blink 12 times

Compressor demagnetization protection It can be displayed

through remote

controller within 200s

and displayed directly

after 200s

HE blink 14 times

PN voltage drop protection U3 blink 20 times

IPM high temperature protection P8 blink 19 times

Refrigerant-lacking or blockage protection F0 blink 10 times

Capacitor charge malfunction Hardware malfunction PU blink 17 times Refrigerant system high pressure protection Hardware malfunction E1 blink once

system low-pressure protection (reserved) Hardware malfunction E3 blink 3 times

Compressor over load protection

It can be displayed

through remote

controller within 200s

and displayed directly

after 200s

H3 blink 3 times

Fault in matching Hardware malfunction LP blink 19 times Loading EEPROM malfunction Hardware malfunction EE blink 15 times AC current detect circuit malfunction Hardware malfunction U5 blink 13 times Outdoor DC fan motor malfunction Hardware malfunction L3 blink 23 times Mode conict operation status E7 blink 7 times

Installation and Maintenance

Service Manual

Note: Please refer to service manual for the troubleshooting procedure for outdoor unit.

Recovery refrigerant mode operation status Fo blink once blink once Startup failure

It can be displayed

through remote

controller within 200s

and displayed directly

after 200s

Lc blink 11 times

Compressor exhaust high temperature protection E4 blink 4 times Anti-high temperature protection E8 blink 8 times AC over-current protection E5 blink 5 times Over compressor phase current protection P5 blink 15 times Compressor loss step protection H7 blink 7 times Compressor loss of phase protection Ld

IPM protection H5 blink 5 times Low PN voltage protection PL blink 21 times Over voltage protection for PN PH blink 11 times PFC protection HC blink 6 times 4-way valve reversal abnormal U7 blink 20 times

Installation and Maintenance

Service Manual

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 can't 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 Overcurrent Protection E5

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 doesn’t 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 hasn’t 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

6. High temperature and overload protection (AP1 below means control board of outdoor unit) E8

Main detection points:

● If the outdoor ambient temperature is in normal range;

● If the indoor and outdoor fan are running normally;

● If the radiating environment of indoor and outdoor unit is good.

Malfunction diagnosis process:

Start

If the outdoor ambient temperature is

higher than 53°C?

If the airow of indoor and outdoor unit

is good?

If the indoor and outdoor fan are

running normally?

Replace outdoor

mainboard

Connect normally?

Adjust the

connection

Replace fan

capacitor

Replace motor

Fan capacitor is broken?

Motor is broken?

Replace mainboard

Improve the radiating environment of

unit (clean the heat exchanger and

remove surrounding obstacles)

Normal protection, please use it

after improving the outdoor ambient

temperature

Unit restarts

normally

Unit restarts

normally

End

Yes

Installation and Maintenance

Service Manual

Overload Protection Compressor

Main detection points:

● Heat exchange of unit is not good? (heat exchanger is dirty and unit radiating environment is bad)

● Fan motor is not working?

● Too much load of the system causes high temperature of compressor after working for a long time?

● Whether high pressure switch is normal?

● If the refrigerant is leaked?

Malfunction diagnosis process:

Start

Outdoor and indoor heat

exchangers are too dirty or the air

inlet/outlet is blocked.

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

Malfunction is eliminated.

Check motor and re-install the motor to make it run normally.

Make compressor run normally.

Remove blockage in the system.

Replace high pressure switch

Check the leaking status of refrigerant and charge refrigerant

Fan motor is not working.

Abnormal fan speed; fan speed is too

low or the fan doesn't run.

Compressor doesn't work

normally. Strange noise or leakage occurs.

Temperature of the shell is too high.

System is blocked inside

(dirt block, ice block, oil block, Y-valve not

fully open).

Check whether high

pressure switch is normal

Check whether the

refrigerant is leaking and cause

overheating protection to compressor

Replace a main

board of the

same model.

End

Yes

Installation and Maintenance

Service Manual

9.2 Maintenance Method for Normal Malfunction

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 it's 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; Unit's 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 can’t swing

Refer to point 3 of maintenance method for

details

Malfunction of the IDU fan motor The IDU fan motor can’t operate

Refer to troubleshooting for H6 for maintenance method in details

Malfunction of the ODU fan motor The ODU fan motor can't operate

Refer to point 4 of maintenance method for

details

Malfunction of compressor Compressor can't operate

Refer to point 5 of maintenance method for

details

1. Air Conditioner Can't be Started Up

2. Poor Cooling (Heating) for Air Conditioner

3. Horizontal Louver Can't Swing

Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting

No power supply, or poor

connection for power plug

After energization, operation indicator isn’t bright and the buzzer can't give out sound

Conrm whether it's 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 isn't 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 can't operate Repair or replace stepping motor

Main board is damaged

Others are all normal, while horizontal louver

can't 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 there's abnormal

sound

There's the sound of "PAPA"

Normal phenomenon. Abnormal sound will

disappear after a few minutes.

When turn on or turn off the unit, there's 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 there're parts touching together inside the indoor unit

There's 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 there're parts touching together inside the outdoor unit

There's 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 Can't 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 it's 0

Repair or replace compressor

Cylinder of compressor is blocked Compressor can't operate Repair or replace compressor

4. ODU Fan Motor Can't 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

09/12K

B4 P

nel

B6/A5

Panel

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

Product Code CB435N00400 CB435N00100

Front Panel Assy 20000300050 20000300049 1

Display Board 30565281 30565281 1

Front Case Assy 00000200040 00000200045 1

Helicoid Tongue 26112508 26112436 1

Left Axile Bush 10512037 10512037 1

Rear Case assy 20162010 00000100093 1

Drainage Hose 0523001408 05230014 1

Ring of Bearing 26152022 26152022 1

O-Gasket sub-assy of Bearing 7651205102 7651205102 1

Evaporator Support 24212180 24212179 1

Cold Plasma Generator 1114001602 1114001602 1

Evaporator Assy 01002000044 01100100245 1

Wall Mounting Frame 01252043 01252484 1

Cross Flow Fan 10352059 10352056 1

Fan Motor 150120874 1501214603 1

Connecting pipe clamp 2611216401 2611216401 1

Rubber Plug (Water Tray) 76712012 76712012 1

Stepping Motor 1521212901 1521210701 1

Crank 73012005 73012005 1

Electric Box Assy 10000202398 10000202284 1

21 Axile Bush 10542036 10542036 1

22 Terminal Board 42011233 42011233 1

23 Jumper 4202300104 4202300114 1

Main Board 30138000427 30138000430 1

Electric Box Cover Sub-Assy 01402065 01402065 1

Shield Cover of Electric Box Cover 01592150 01592150 1

Electric Box Cover2 20112208 20112208 1

Connecting Cable 4002052317 4002052317 0

Remote Controller 30510474 30510474 1

MAFX126R5I

MAFX96R5I

Installation and Maintenance

Service Manual

Above data is subject to change without notice.

No.

Description

Part Code

Qty

Product Code

Front Panel Assy

Display Board

Front Case Assy

Helicoid Tongue

Left Axile Bush

Rear Case assy

Drainage Hose

Ring of Bearing

O-Gasket sub-assy of Bearing

Evaporator Support

Cold Plasma Generator

Evaporator Assy

Wall Mounting Frame

Cross Flow Fan

Fan Motor

Connecting pipe clamp

Rubber Plug (Water Tray)

Stepping Motor

Crank

Electric Box Assy

21 Axile Bush

22 Terminal Board

23 Jumper

Main Board

Electric Box Cover Sub-Assy

Shield Cover of Electric Box Cover

Electric Box Cover2

Connecting Cable

Remote Controller

Installation and Maintenance

Service Manual

18K

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

Product Code CB435N00200

Decorative Strip / /

Front Panel 20000300040 1

Display Board 30565278 1

Filter Sub-Assy 11122089 2

Decorative Board (Left) / /

Front Case 2002248401 1

Guide Louver 1051276501 1

Axile Bush 10542036 2

Air Louver 10512732 3

Helicoid tongue 26112512 1

Left Axile Bush 10512037 1

Rear Case assy 22202571 1

Rubber Plug (Water Tray) 76712012 1

O-Gasket sub-assy of Bearing 7651205102 1

15 Ring of Bearing 26152025 1

Evaporator Support

24212177 1

Evaporator Assy 01002000014 1

Cross Flow Fan 10352060 1

Fan Motor 1501214502 1

Motor Press Plate 26112511 1

21 Wall Mounting Frame 01362026 1

22 Connecting Pipe Clamp 2611218801 1

23 Crank 73012005 1

Stepping Motor 1521240212 1

Drainage hose 05230014 1

Electric Box Assy 10000202378 1

Lower Shield of Electric Box 01592139 1

Electric Box 20112211 1

Jumper 4202300121 1

Main Board 30138000429 1

Shield Cover of Electric Box 01592140 1

Electric Box Cover 20112209 1

Terminal Board 42011233 1

Decorative Board (Right) / /

Screw Cover 2425201726 3

Electric Box Cover2 20112210 1

Connecting Cable 4002052317 0

Remote Controller 30510474 1

Cold Plasma Generator 1114001602 1

MAFX186R5I

Installation and Maintenance

Service Manual

24K

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

Product Code CB435N00300

Front Panel Assy 20000300048 1

Filter Sub-Assy 11012007 2

Screw Cover 2425245301 3

Front Case Assy 00000200043 1

Air Louver(Manual) 10512737 3

Helicoid Tongue 26112513 1

Left Axile Bush 10512037 1

Rear Case assy 22202570 1

Rubber Plug (Water Tray) 76712012 1

Ring of Bearing 26152025 1

O-Gasket of Cross Fan Bearing 76512203 1

Cross Flow Fan 10352057 1

Evaporator Support 24212178 1

Evaporator Assy 01002988 1

15 Cold Plasma Generator 1114001602 1

Wall Mounting Frame 01252229 1

Motor Press Plate 26112515 1

Fan Motor 15012145 1

Connecting pipe clamp 26112514 1

Drainage Hose 0523001405 1

21 Stepping Motor 1521240212 1

22 Crank 73012005 1

23 Guide Louver 1051232001 1

Axile Bush 10542036 2

Electric Box 20112211 1

Terminal Board 42011233 1

Electric Box Cover2 20112210 1

Main Board 30138000426 1

Display Board 30565278 1

Shield cover of Electric Box 01592140 1

Electric Box Cover 20112209 1

Jumper 4202300125 1

Lower Shield of Electric Box 01592139 1

Electric Box Assy 10000202379 1

Power Cord / /

Connecting Cable 4002052317 0

Temperature Sensor 3900031302 1

Remote Controller 30510474 1

MAFX246R5I

Installation and Maintenance

Service Manual

11. Removal Procedure

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 assy

2. Remove horizontal louver

Front panel

Front case

Right lter

Groove

Left lter

Open the front panel. Push the left and right filters to make them break away from the groove on the front case. Then remove the left and right filters one by

one.

Screw off the 2 screws that are locking the display board. Separate the display board from the front panel.

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

Panel

Screws

Display

Front panel

Panel rotation

Groove

3. Remove panel

09/12K

Installation and Maintenance

Service Manual

ProcedureStep

Remove the screws on the electric box cover 2 to remove the electric box cover 2.

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.

Electric box cover 2

Screw

4. Remove electric box cover 2

5. Remove front case sub-assy

6. Remove vertical louver

Front case sub-assy

Clasp

Screw caps

Screws

bottom case

Screw

Vertical louver

Clasps

Bottom case

Installation and Maintenance

Service Manual

Procedure

Step

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

Remove the cold plasma generator by

screwing off one locking screw on the

generator.

②

Take off the indoor tube temperature

sensor.

③

Screw off one 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 lead

wire and rotate the electric box assy.

Twist off the screws that are locking wire

clip.

Loosen the power cord and remove its wiring

terminal. Lift up the main board and take it

off.

Remove the display board by taking out its

wiring terminal.

Remove temperature sensor by taking out

its wiring terminal.

7. Remove electric box assy

Electric box

Electric box assy

Clasps

Shield cover of electric box sub-assy

Cold plasma generator

Grounding

screw

Screw

Power cord

Screw

Wiring terminal

of display board

Wiring terminal of

temperature sensor

Wire clip

Screw

Main board

Screw

Indoor tube temperature sensor

Wiring

terminal

of motor

Wiring

terminal

of stepping

motor

Installation and Maintenance

Service Manual

First remove the left side of evaporator from

the groove of bottom shell and then remove

the right side from the clasp on the bottom

shell.

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 shell

Clasp

Connection pipe

At the back of the unit, remove the

screw fixing 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

18/24K

1. Remo ve filter assy

Open the front panel. Push the left and right filters to make them break away from the groove on the front case. Then remove the left and right filters one by one.

Groove

Screw off the 2 screws that are locking the display board. Separate the displayboard from the front panel.

Right filter

Front case

Left filter

Front panel

Installation and Maintenance

Service Manual

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

Swingmotor

Screw off the screws that are locking theswing motor and take the motor off.

Installation and Maintenance

Service Manual

Indoor tube temperature sensor

Main board

Wiring terminal of mo tor

Wiring terminal of stepping motor

Screw

Grounding screw

Wire binder

Cut off the wire binder and pull out the indoor tube temperature sensor. Screw off one grounding screw. Remove the wiring terminals of motor and stepping motor. Remove the electric box assy. Screw off the screws that are locking each lead wire.

Screw

Wire clip

Power cord

Rotate the electric box assy. Twist offthe screws that are locking the wire clip and loosen the power cord. Remove the wiring terminal of power cord. Lift up the main board and take it off.

Installation and Maintenance

Service Manual

Rear ca se assy

First remove the left side of evaporator from the groove on the rear case assy. Then remove the right side from the clasp on the rear case assy.

Groove

Clasp

Installation and Maintenance

Service Manual

Installation and Maintenance

Service Manual

Appendix:

1.Standard length of connection pipe

● 5m, 7.5m, 8m.

2.Min. length of connection pipe is 3m.

3.Max. length of connection pipe and max. high difference.

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):

Appendix 1: Reference Sheet of Celsius and Fahrenheit

Appendix 2: Conguration of Connection Pipe

Cooling capacity

Max length of

connection pipe

Max height

difference

9000 Btu/h(2637 W) 15 m 10 m 12000 Btu/h(3516 W) 20 m 10 m 18000 Btu/h(5274 W) 25 m 10 m 24000 Btu/h(7032 W) 25 m 10 m

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

Additional refrigerant charging amount for R22, R407C, R410A and R134a

Diameter of connection pipe Outdoor unit throttle

Liquid pipe(mm) Gas pipe(mm) Cooling only(g/m) Cooling and heating(g/m)

Ф6 Ф9.5 or Ф12 15 20

Ф6 or Ф9.5 Ф16 or Ф19 15 20

Ф12 Ф19 or Ф22.2 30 120 Ф16 Ф25.4 or Ф31.8 60 120 Ф19 / 250 250

Ф22.2 / 350 350

● When the length of connection pipe is above 5m, add refrigerant according to the prolonged length of liquid pipe. The additional refrigerant charging amount per meter is different according to the diameter of liquid pipe. See the following sheet.

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

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:

Installation and Maintenance

Service Manual

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 2.523 110 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 2.28 113 0.697

-3 57.18 36 9.382 75 2.206 11 4 0.678

-2 54.31 37 9.003 76 2.133 11 5 0.66

-1 51.59 38 8.642 77 2.064 11 6 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

Appendix 4: List of Resistance for Temperature Sensor

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

Installation and Maintenance

Service Manual

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

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

Installation and Maintenance

Service Manual

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 7.73 112 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 6.13 119 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

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

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