Sinclair MV-H**BIF series, MV-H09BIF, MV-H12BIF, MV-H18BIF, MV-H24BIF Service Manual

MULTI VARIABLE SERIES

WALL MOUNTED - FOCUS

MV-HxxBIF

SERVICE MANUAL

EN



“Originalinstructions”

IMPO

RTANT N

OTE:

Read this manual ca

r

efully befo

r

e installing

or operating your new air conditioning
unit. Make sure to save this manual for
futu

re r

efe

r

ence.

Service Manual

Table of Contents

Part

Ⅰ

: Technical Information

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

1. Summary

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

2. Specications

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

2.1 Specication Sheet ...........................................................................................................2

2.2 Noise Criteria Curve Tables

...................................................................

3

3. Outline Dimension Diagram

........................................................................4

4. Refrigerant System Diagram

......................................................................5

5. Electrical Part

...........................................................................................................6

5.1 Wiring Diagram .................................................................................................................6

5.2 PCB Printed Diagram .......................................................................................................8

6. Function and Control

........................................................................................9

6.1 Remote Controller Introduction of YAN1F6(WiFi) ............................................................9

6.3 Ewpe Smart App Operation Manual

...............................................................................

15

6.4 Brief Description of Modes and Functions

......................................................................

16

Part

Ⅱ

: Installation and Maintenance

.................................................

19

7. Notes for Installation and Maintenance

..........................................

19

8. Installation

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

8.1 Installation Dimension Diagram

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

8.2 Installation Parts-checking

............................................................................................

26

8.3 Selection of Installation Location

....................................................................................

26

8.4 Requirements for electric connection

.............................................................................

26

8.5 Installation of Indoor Unit

................................................................................................

26

8.6 Check after Installation and Test operation

....................................................................

29

9. Maintenance

............................................................................................................

30

9.1 Error Code

......................................................................................................................

30

9.2 Maintenance Method for Normal Malfunction

.................................................................

39

10. Exploded View and Parts List

..............................................................41

11. Removal Procedure

.......................................................................................44

Appendix:

........................................................................................................................

49

Appendix 1: Reference Sheet of Celsius and Fahrenheit

....................................................

49

Appendix 2: Conguration of Connection Pipe

.....................................................................

49

Appendix 3: Pipe expanding method

....................................................................................

50

Appendix 4: List of Resistance for Temperature Sensor

......................................................

51

1

Service Manual

1. Summary

Indoor Unit:

Part

Ⅰ

: Technical Information

Remote Controller:

YAC1FB9(WiFi)

3

Service Manual

2.2 Noise Criteria Curve Tables

4

Service Manual

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

W

12K

09K

D

H

90

150

54

168.5 462 159.5

Φ55

Φ55

54

123.5542 179.5

83.2

124.7

35

Φ55

Φ55

35

18K

104 685 181

140

190

38

Φ55

Φ55

38

24K

79

154

43

206 685 187

Φ70

Φ70

43

5

Service Manual

4. Refrigerant System Diagram

outdoor

indoor

D1

C

1

B1

A

1

filter

A heat exchanger

gas -liquid separator

inverter compressor

discharge silencer

discharge temperature
sensor

SP

4-way valve

outdoor heat exchanger

fan

high pressure switch

B heat exchanger

C heat exchanger

D heat exchanger

filter

filter

filter

filter

C2

C3

D3

D2

B3

B2

A2

A3

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

6

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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Service Manual

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8

Service Manual

5.2 PCB Printed Diagram

● Top view

No Name

1

Interface of communication wire for

indoor unit and outdoor unit
2

3

Interface of live wire

Fuse

Interface of health function neutral

wir

e

4

Interface of neutral wire

5

Interface of fan

6

Interface of health function live wire

7
8

Auto butto

n

Interface of WIF

I

9

Up&down swing interface

Interface of PG feedbac

k

10

11

12

Needle stand for tube temperature

sensor

13

Display interface

14

Jum

p

15

15

17

16

11

12

18

14

13

45 6 8910

● Bottom view

1

2

3

7

Interface of left&right swing

16

Terminal of live wire used for

outdoor unit power supply

17

Terminal of gate control function

18

Terminal of Wired controller

9

Service Manual

Set fan speed

Send signal

Turbo mode

8ć heating function
Set temperature

Set time

X-FAN function

TIMER ON/TIMER OFF

Child lock
Up & down swing
Left & right swing

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

Healthy mode
Scavenging functions

Quiet

WiFi

This is a general remote controller.Some

models have this function while some
do not. Please refer to the actual models.

{

6

3

7

9

11

13

15

12

14

16

10

8

5

4

2

1

1 ON/OFF button

2 MODE button

3 FAN button

4 TURBO button

6 button

7 button

9 I FEEL button

14 LIGHT button

15 button

16 TEMP button

11 CLOCK button

12 QUIET button

13

WiFi button

10 TIMER ON / TIMER OFF button

8 SLEEP button

5 ▲/ button

▲

This is a general use remote controller, it could be used for the air conditioners with multifunction; For some function, which the
model doesn't have, if press the corresponding button on the remote controller that the unit will keep the original running status.

After putting through the power, the air conditioner will give out a sound. Operation indicator " " is ON (red indicator,the colour is
different for different models). 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 “di” sound, which means the signal has been sent to the air conditioner.

●As for the models with functions of WiFi or wired controller, the indoor unit must has been controlled by standard remote controller under auto
mode first,and then the function of adjustable temperature under auto mode can be realized by APP or the wired controller.

●This remote controller can adjust the temperature under auto mode. When matching with the unit which is without the function of adjustable
temperature under auto mode, the set temperature under auto mode may be invalid, or the displayed set temperature on the unit is not same as
that on the remote controller under auto mode.

6. Function and Control

6.1 Remote Controller Introduction

10

Service Manual

Press this button to turn on the unit. Press this button again to turn off the unit.

It’s Low fan speed under Dry mode.

X-FAN function Hold fan speed button for 2s in COOL or DRY mode, the icon “ ” is displayed and the indoor fan will continue operation
for a few minutes in order to dry the indoor unit even though you have turned off the unit. After energization, X-FAN OFF is defaulted.
X-FAN is not available in AUTO, FAN or HEAT mode.

This function indicates that moisture on evaporator of indoor unit will be blowed after the unit is stopped to avoid mould.

Having set X-FAN function on: After turning off the unit by pressing ON/OFF button indoor fan will continue running for a few minutes. at
low speed. In this period, Hold fan speed button for 2s to stop indoor fan directly.

Having set X-FAN function off: After turning off the unit by pressing ON/OFF button, the complete unit will be off directly.

(This indicator is not

(This indicator

Operation indicator is ON.

available for some models).

(This indicator is not

available for some models).

is not available for some models).

Fan speed: auto, low speed, low-medium speed,medium speed,

medium-high speed,high speed.

Under auto mode, temperature can be displayed;Under auto mode,set temperature can be adjusted.

This button is used for setting Fan Speed in the sequence that goes from AUTO,

,

to

,,

,

then back to Auto.

Low-Medium speed

Medium-High speed

Medium speed

High speed

Auto

Low speed

11

Service Manual

When I FEEL function is turned on, the remote controller should be put within the area where indoor unit can receive the signal sent by the
remote controller.

● The function is only available for some mode

● Press this button, can select Sleep 1 ( ), Sleep 2 ( ), Sleep 3 ( ) and cancel the Sleep, circulate between these, after electrified,
Sleep Cancel is defaulted.Sleep 1 is Sleep mode 1, in Cool modes; sleep status after run for one hour, the main unit setting temperature will
increase 1 , two hours, setting temperature increased 2 , then the unit will run at this setting temperature; In Heat mode: sleep status after run
for one hour, the setting temperature will decrease 1 , two hours, setting temperature will decrease 2 , then the unit will run at this setting
temperature.

● Sleep 2 is sleep mode 2, that is air conditioner will run according to the presetting a group of sleep temperature curve.

● Sleep 3-the sleep curve setting under Sleep mode by DIY;
(1)Under Sleep 3 mode, press “Turbo” button for a long time, remote controller enters into user individuation sleep setting status, at this time,
the time of remote controller will display “1hour”, the setting temperature “88” will display the corresponding temperature of last setting sleep
curve and blink (The first entering will display according to the initial curve setting value of original factory);
(2)Adjust "▲" and " "▲ button, could change the corresponding setting temperature, after adjusted, press “Turbo” button for confirmation;
(3) At this time, 1hour will be automatically increased at the timer postion on the remote control, (that are "2hours" or "3hours" or "8hours"),
the place of setting temperature "88"will display the corresponding temperature of last setting sleep curve and blink;
(4) Repeat the above step (2)~(3) operation, until 8 hours temperature setting finished, sleep,curve setting finished, at this time, the remote
controller will resume the original imer display; temperature display will resume to original setting temperature.

● Sleep3- the sleep curve setting under Sleep mode by DIY could be inquired: The user could accord to sleep curve setting method to inquire
the presetting sleep curve, enter into user individuation sleep setting status, but do not change the temperature,press “Turbo” button directly fo

r

confirmation. Note: In the above presetting or enquiry procedure, if continuously within 10s, there is no button pressed, the sleep curve setting
within 10s, there is no button pressed, the sleep curve setting status will be automatically quit and resume to display the original displaying.
In the presetting or enquiry procedure, press "ON/OFF" button, "Mode" button, "Timer" button or "Sleep" button, the sleep curve setting or
enquiry status will quit similarly.

123

12

Service Manual

13.WiFi button

This function is only available for some models.

This function is applicable to partial of models.

Press " WiFi " button to turn on or turn off WiFi function. When WiFi function is turned on, the " WiFi " icon will be displayed on remote
controller; Under status of unit off, press "MODE" and " WiFi " buttons simultaneously for 1s, WiFi module will restore to factory default
setting.

● The Quiet function can be set up in all modes; Under the Quiet mode,the fan speed is not available.

● The Quiet function is only available for some models.

● When quiet function is selected
Under cooling mode: indoor fan operates at notch 4 speed. 10 minutes later or when indoor ambient temperature≤28

℃, indoor fan will operate

at notch 2 speed or quiet mode according to the comparison between indoor ambinet temperature and set temperature.
Under heating mode: indoor fan operates at notch 3 speed or quiet mode according to the comparison between indoor ambient temp

erature and
set temperature.
Under dry

, fan mode: indoor fan operates at quiet mode.

Under auto mode: the indoor fan operates at the auto quiet mode according to actual cooling, heating or fan mode.

13

Service Manual

13.WiFi button

This function is only available for some models.

This function is applicable to partial of models.

Press " WiFi " button to turn on or turn off WiFi function. When WiFi function is turned on, the " WiFi " icon will be displayed on remote
controller; Under status of unit off, press "MODE" and " WiFi " buttons simultaneously for 1s, WiFi module will restore to factory default
setting.

● The Quiet function can be set up in all modes; Under the Quiet mode,the fan speed is not available.

● The Quiet function is only available for some models.

● When quiet function is selected
Under cooling mode: indoor fan operates at notch 4 speed. 10 minutes later or when indoor ambient temperature≤28℃, indoor fan will operate
at notch 2 speed or quiet mode according to the comparison between indoor ambinet temperature and set temperature.
Under heating mode: indoor fan operates at notch 3 speed or quiet mode according to the comparison between indoor ambient temperature and
set temperature.
Under dry, fan mode: indoor fan operates at quiet mode.
Under auto mode: the indoor fan operates at the auto quiet mode according to actual cooling, heating or fan mode.

14

Service Manual

15

Service Manual

Control Flow Chart

Download and installation

Operating Systems

Requirement for Users smart phone:

Scan the QR code or search "Ewpe Smart" in the application market to download and install it. When "Ewpe Smart" App is installed,
register the account and add the device to achieve long-distance control and LAN control of smart home appliances.
For more information, please refer to "Help" in App.

6.3 Ewpe Smart App Operation Manual

iOS system

Support iOS7.0 and
above version

Android system

Support Android 4.4

and

above version

App Download Linkage

Internet

Cellular/

Other Wi-FI

Home Wi-Fi

Home wireless router

Home Wi-Fi

Cloud

APP

intelligent

home

appliances

16

Service Manual

6.4 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. T

emperature setting range is 16~30OC.

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.

17

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. T

emperature setting range is 16~30OC.

(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:

18

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.

19

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.

20

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 manufacturer’

s instructions only.Be aware that

refrigrants not contain odour.

●Read specialist’s manual.

21

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 equipment’s 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

2

)

Maintenance notes

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

— It’s 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 isn’t any naked ame near the outlet of the vacuum pump and it’s 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 won’t 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 haven’t nished).

●Don’t overlling.

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

when it’s 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.

22

Service Manual

●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.

●When installing or moving this unit, do not charge the refrigerant

which is not comply with that on the nameplate or unqualified

refrigerant.Otherwise, it may cause abnormal operation, wrong

action, mechanical malfunction or even series safety accident.

●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.

●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.

●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.

●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.

●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.

●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.

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

23

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



24

Service Manual

8. Installation

8.1 Installation Dimension Diagram

Drainagepipe

At least250cm

At least 15cm

At least 300cm

Spacetothe

Spacetothe ceiling

Space to the obstruction

At least15cm

At least 15cm

Spacetothe wall

Space to the wall

25

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

26

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

5

Wall-mounting
frame

12

Drainage plug(cooling

and heating unit)

6

Connecting
cable(power cord)

13

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 Requirements for electric connection

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) Do not use the unit in the immediate surroundings of a
laundry a bath a shower or a swimming pool.

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.

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.

Please notice that the unit is lled 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”.

27

Service Manual

Left

Rear left

Right

Rear right

Cut off
the hole

Left Right

5-10

°

Φ55mm

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:

Insulating pip

e

Torque wrenc

h

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

.

Outlet pipe

Drain hos

e

Drain hose

Tape

Outlet pipe

Drain hose

Insulating pip

e

(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:

28

Service Manual

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

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

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:

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

29

Service Manual

NO. Items to be checked Possible malfunction

1

Has the unit been
installed rmly?

The unit may drop, shake or

emit noise.

2

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.

5

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

It may cause malfunction or

damage the parts.

6

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.

8

Does the power cord
follow the specication?

It may cause malfunction or

damage the parts.

9

Is there any obstruction
in air inlet and air outlet?

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

10

The dust and

sundries caused
during installation are

removed?

It may cause malfunction or

damaging the parts.

11

The gas valve and liquid

valve of connection pipe

are open completely?

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

12

Is the inlet and outlet
of piping hole been
covered?

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

eletricity.

1. Check after Installation

Check according to the following requirement after finishing

installation.

8.6 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.

30

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

31

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

32

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

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

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

33

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

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

No

No

No

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

34

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

Yes

Yes

Yes

Yes

No

No

No

No

No

35

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

No

Start

End

36

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

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No No

No

No

No

No

No No

No

No

No

No

No

37

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

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

38

Service Manual

7.

Overload Protection Compressor

H3

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.

Malfunction is
eliminated.

Malfunction is
eliminated.

Malfunction is
eliminated.

Malfunction is
eliminated.

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

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

No

No

No

No

No

No

39

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

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't pressure is much lower than regulated
range. If refrigerant isn’t leaking, part of capillary
is blocked

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

40

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

44

Service Manual

11. Removal Procedure

Caution: discharge the refrigerant

completely before removal.

a

b

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

45

Service Manual

a

b

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

Front case
sub-assy

Clasp

Screw caps

Screws

Bottom case

Screw

Vertical
louver

Vertical
louver

Clasps

Bottom
case

46

Service Manual

a

b

c

d

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

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

Main board

Screw

Screw

Indoor tube
temperature
sensor

Wiring

terminal

of motor

Wiring

terminal

of stepping

motor

47

Service Manual

a

c

d

b

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

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.

48

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

a

b

49

Service Manual

Appendix:

Appendix 1: Reference Sheet of Celsius and Fahrenheit

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

Appendix 2: Conguration of Connection Pipe

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 the following sheet.

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

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.(See the specication)

Additional refrigerant charging amount for R32

Diameter of connection pipe Outdoor unit throttle

Liquid pipe(mm) Gas pipe(mm) 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

50

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

s

Smooth surface

Downwards

Pipe

Shaper

Union pipe

Pipe

Expander

Hard
mold

Pipe

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:

Note:

51

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 11 2 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 1.997 117 0.625

1 46.6 40 7.967 79 1.933 118 0.608

2 44.31 41 7.653 80 1.871 119 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)

52

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 11 0 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 11 3 0.93

-3 76.24 36 12.51 75 2.94 11 4 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 2.495 119 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)

53

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 11 0 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 11 3 2.30

-3 199.1 36 30.79 75 7.22 11 4 2.24

-2 178.5 37 29.54 76 7.00 11 5 2.18

-1 169.5 38 28.36 77 6.76 11 6 2.12

0 161 39 27.23 78 6.54 117 2.07

1 153 40 26.15 79 6.33 118 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

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

PARTS GUIDE

MULTI VARIABLE SERIES

WALL MOUNTED – FOCUS

MV-HXXBIF

MV-H07BIF

No Description Part Code Note Qty

Price Code

1 Front Panel 27230009455 1 AN
2 Display Board 300001000081 1 AR
3 Front Case Assy 00000200040 1 AP
4 Helicoid Tongue 26112508 1 AE
5 Left Axile Bush 10512037 1 AB
6 Rear Case assy 20162010 1 AY
7 Drainage Hose 0523001408 1 AD
8 Ring of Bearing 26152022 1 AC
9 O-Gasket sub-assy of Bearing 76512051 1 AC
10 Evaporator Support 24212180 1 AE
11 Cold Plasma Generator 1114001603 1 AP
12 Evaporator Assy 0110010009505 1 BB
13 Wall Mounting Frame 01252043 1 AK
14 Cross Flow Fan 10352059 1 AM
15 Fan Motor 150120874 1 AX
16 Connecting pipe clamp 2611216401 1 AB
17 Rubber Plug (Water Tray) 76712012 1 AC
18 Stepping Motor 1521212901 1 AF
19 Crank 73012005 1 AB
20 Electric Box Assy 100002002491 1 BB
21 Axile Bush 10542036 1 AB
22 Terminal Board 42011233 1 AE
23 Jumper 4202021904 1 AA
24 Main Board 300002000288 1 AX
25 Electric Box Cover Sub-Assy 0140206501 1 AD
26 Shield Cover of Electric Box Cover 01592150 1 AD
27 Electric Box Cover 20112207 1 AD
28 Power Cord none 0 ­29 Connecting Cable none 0 ­30 Connecting Cable 4002052317 1 AN
31 Remote Controller

305001000118_L41851

1 -

32 Test Board Assy

000409000002_L41851

1 ­33 Guide Louver 1051276301 1 AF
34 Swing Louver 10512721 1 AB

MODEL: MV-H07BIF Wall mounted unit

The data are subject to change without notice.

MV-H09BIF

No Description Part Code Note Qty

Price Code

1 Front Panel 27230009455 1 AN
2 Display Board 300001000081 1 AR
3 Front Case Assy 00000200040 1 AP
4 Helicoid Tongue 26112508 1 AE
5 Left Axile Bush 10512037 1 AB
6 Rear Case assy 20022682 1 AY
7 Drainage Hose 0523001408 1 AD
8 Ring of Bearing 26152022 1 AC
9 O-Gasket sub-assy of Bearing 76512051 1 AE
10 Evaporator Support 24212180 1 AE
11 Cold Plasma Generator 1114001603 1 AP
12 Evaporator Assy 0110010009505 1 BB
13 Wall Mounting Frame 01252043 1 AK
14 Cross Flow Fan 10352059 1 AM
15 Fan Motor 150120874 1 AX
16 Connecting pipe clamp 2611216401 1 AB
17 Rubber Plug (Water Tray) 76712012 1 AC
18 Stepping Motor 1521212901 1 AF
19 Crank 73012005 1 AB
20 Electric Box Assy 100002062337 1 BB
21 Axile Bush 10542036 1 AB
22 Terminal Board 42011233 1 AE
23 Jumper 4202021908 1 AA
24 Main Board 300002060228 1 AX
25 Electric Box Cover Sub-Assy 0140206501 1 AD
26 Shield Cover of Electric Box Cover 01592150 1 AD
27 Electric Box Cover 20112207 1 AD
28 Power Cord none 0 ­29 Connecting Cable none 0 ­30 Connecting Cable 4002052317 1 AN
31 Remote Control

305001060023_L41851

1 ­32 Test Board Assy

000409000002_L41851

1 ­33 Guide Louver 1051276301 1 AF
34 Swing Louver 10512740 1 AB

MODEL: MV-H09BIF Wall mounted unit

The data are subject to change without notice.

MV-H12BIF

No Description Part Code Note Qty

Price Code

1 Front Panel 27230009457 1 AN
2 Display Board 300001000081 1 AR
3 Front Case Assy 00000200045 1 AQ
4 Helicoid Tongue 26112436 1 AE
5 Left Axile Bush 10512037 1 AB
6 Rear Case assy 00000100092 1 AY
7 Drainage Hose 05230014 1 AD
8 Ring of Bearing 26152022 1 AC
9 O-Gasket sub-assy of Bearing 76512051 1 AC
10 Evaporator support 24212179 1 AE
11 Cold Plasma Generator 1114001603 1 AP
12 Evaporator Assy 011001060162 1 BC
13 Wall Mounting Frame 01252484 1 AK
14 Cross Flow Fan 10352056 1 AN
15 Fan Motor 15012146 1 AX
16 Connecting pipe clamp 2611216401 1 AB
17 Rubber Plug (Water Tray) 76712012 1 AC
18 Stepping Motor 1521210108 1 AG
19 Crank 73012005 1 AB
20 Electric Box Assy 100002062377 1 ­21 Axile Bush 10542036 1 AB
22 Terminal Board 42011233 1 AE
23 Jumper 4202021917 1 AA
24 Main Board 300002060230 1 AX
25 Electric Box Cover Sub-Assy 0140206501 1 AD
26 Shield Cover of Electric Box Cover 01592150 1 AD
27 Electric Box Cover 2011220701 1 AD
28 Power Cord none 0 ­29 Connecting Cable none 0 ­30 Connecting Cable 4002052317 1 AN
31 Remote Control

305001060023_L41851

1 ­32 Test Board Assy

000409000001_L41851

1 ­33 Guide Louver 1051293101 1 AF
34 Air Louver (Auto) 10512727 1 AB

MODEL: MV-H12BIF Wall mounted unit

The data are subject to change without notice.

MV-H18BIF

No Description Part Code Note Qty

Price Code

1 Decorative Strip 1 none 0 ­2 Front Panel 27230009459 1 AN
3 Display Board 300001000081 1 AR
4 Filter Sub-Assy 1112208906 2 AD
5 Decorative Board (Left and Right) 20192662 1 AE
6 Front Case Assy 00000200042 1 AS
7 Guide Louver 1051276501 1 AF
8 Axile Bush 10542036 2 AB
9 Air Louver 10512736 1 AB
10 Helicoid Tongue 26112512 1 AE
11 Left Axile Bush 10512037 1 AB
12 Rear Case assy 00000100001 1 AX
13 Rubber Plug (Water Tray) 76712012 1 AC
14 O-Gasket sub-assy of Bearing 76512051 1 AC
15 Ring of Bearing 26152025 1 AC
16 Evaporator Support 24212177 1 AE
17 Evaporator Assy 011001000207 1 BE
18 Cross Flow Fan 10352060 1 AN
19 Fan Motor 1501214502 1 AX
20 Motor Press Plate 26112511 1 AE
21 Wall Mounting Frame 01362026 1 AK
22 Connecting pipe clamp 2611218801 1 AB
23 Crank 73012005 1 AB
24 Stepping Motor 1521240212 1 AG
25 Drainage Hose 05230014 1 AD
26 Electric Box Assy 100002062372 1 ­27 Lower Shield of Electric Box 01592139 1 AD
28 Electric Box 20112211 1 AG
29 Jumper 4202021921 1 AA
30 Main Board 300002060236 1 AX
31 Shield Cover of Electric Box 01592176 1 AD
32 Electric Box Cover 20112209 1 AD
33 Terminal Board 42011233 1 AE
34 Decorative Board (Right) none 0 ­35 Screw Cover 2425201726 3 AB
36 Electric Box Cover2 20112210 1 AD
37 Power Cord none 0 ­38 Connecting Cable none 0 ­39 Connecting Cable 4002052317 1 AN
40 Remote Control

305001060023_L41851

1 ­41 Cold Plasma Generator 1114001602 1 AP

MODEL: MV-H18BIF Wall mounted unit

The data are subject to change without notice.

MV-H24BIF

No Description Part Code Note Qty

Price Code

1 Front Panel 27230009461 1 AN
2 Filter Sub-Assy 1101200703 2 AD
3 Screw Cover 2425245301 3 AB
4 Front Case Assy 00000200043 1 AU
5 Air Louver 10512744 1 AB
6 Helicoid Tongue sub-assy 26112384 1 AE
7 Left Axile Bush 10512037 1 AB
8 Rear Case assy 22202736 1 AZ
9 Rubber Plug (Water Tray) 76712012 1 AC
10 Ring of Bearing 26152025 1 AC
11 O-Gasket sub-assy of Bearing 76512051 1 AC
12 Cross Flow Fan 10352057 1 AP
13 Evaporator Support 24212178 1 AE
14 Evaporator Assy 01100100007303 1 BK
15 Cold Plasma Generator 1114001602 1 AP
16 Wall Mounting Frame 01252229 1 AL
17 Motor Press Plate 26112515 1 AE
18 Fan Motor 15012145 1 AZ
19 Connecting pipe clamp 26112514 1 AB
20 Drainage Hose 0523001405 1 AD
21 Stepping Motor 1521240212 1 AG
22 Crank 73012005 1 AB
23 Guide Louver 1051232001 1 AF
24 Axile Bush 10542036 2 AB
25 Electric Box 2011221102 1 AG
26 Terminal Board 42011233 1 AE
27 Electric Box Cover2 20112210 1 AD
28 Main Board 300002060239 1 AX
29 Display Board 300001000081 1 AR
30 Shield Cover of Electric Box 01592176 1 AD
31 Electric Box Cover 20112209 1 AD
32 Jumper 4202021925 1 AA
33 Lower Shield of Electric Box 01592139 1 AD
34 Electric Box Assy 100002062378 1 ­35 Power Cord none 0 ­36 Connecting Cable 4002052317 1 AN
37 Connecting Cable none 0 ­38 Temperature Sensor 3900031302 1 AE
39 Remote Control 305001060023_L41851 1 -

MODEL: MV-H24BIF Wall mounted unit

The data are subject to change without notice.

NOTE CONCERNING PROTECTION OF
ENVIRONMENT

This product must not be disposed of via normal household waste after its service life, but must be
taken to a collection station for the recycling of electrical and electronic devices. The symbol on the
product, the operating instructions or the packaging indicate such disposal procedures. The materials
are recyclable in accordance with their respective symbols. By means of re-use, material recycling or
any other form of recycling old appliances you are making an important contribution to the protection
of our environment. Please ask your local council where your nearest disposal station is located.

INFORMATION CONCERNING USED REFRIGERANT
MEDIUM

This unit is containing fluorinated gases included in the Kyoto protocol. The maintenance and the liquidation must
be carried out by qualified personnel.
Type of refrigerant: R32
The quantity of the refrigerant: please see the unit label.
The value GWP: 675 (1 kg R32 = 0,675 t CO2 eq)
GWP = Global Warming Potential

Appliance filled with flammable gas R32.

In case of quality problem or other please contact your local supplier or authorized service center.

Emergency number: 112

PRODUCER

SINCLAIR CORPORATION Ltd.
1-4 Argyll St.
London W1F 7LD
Great Britain

www.sinclair-world.com

This product was manufactured in China (Made in China).

REPRESENTATIVE

SINCLAIR EUROPE spol. s r.o.
Purkynova 45
612 00 Brno
Czech Republic

TECHNICAL SUPPORT

NEPA spol. s r.o.
Purkynova 45
612 00 Brno
Czech Republic

Tel.: [phone]

Fax: [phone]

www.sinclair-solutions.com
[e-mail]