Sinclair MULTI VARIABLE SERIES, MV-C18BI, MV-C24BI, MV-C12BI, YT1F MOTO Service Manual

MULTI VARIABLE SERIES

CASSETTE

MV-CxxBI

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

3. Outline Dimension Diagram

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

4. Refrigerant System Diagram

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

5. Electrical Part

...........................................................................................................7

5.1 Wiring Diagram .................................................................................................................7

5.2 PCB Printed Diagram .......................................................................................................9

6. Function and Control

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

6.1 Remote Controller Introduction .....................................................................................10

6.2 Brief Description of Modes and Functions ......................................................................14

Part

Ⅱ

: Installation and Maintenance

.................................................17

7. Notes for Installation and Maintenance

..........................................17

8. Installation

................................................................................................................20

8.1 Installation Dimension Diagram ......................................................................................20

8.2 Installation of Cassette Type ..........................................................................................21

8.2 Installation of Cassette Type ..........................................................................................21

9. Maintenance

............................................................................................................23

9.1 Error Code List ...............................................................................................................23

9.2 Troubleshooting for Main Malfunction ............................................................................24

9.3 Maintenance Method for Normal Malfunction .................................................................30

10. Exploded View and Parts List

..............................................................32

11. Removal Procedure

.......................................................................................38

Service Manual

Appendix:

........................................................................................................................42

Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................42

Appendix 2: Conguration of Connection Pipe .....................................................................42

Appendix 3: Pipe Expanding Method ...................................................................................43

Appendix 4: List of Resistance for Temperature Sensor ......................................................44

1

Service Manual

1. Summary

Part

Ⅰ

: Technical Information

Indoor Unit

MV-C12BI
MV-C18BI

MV-C24BI

Remote Controller

YT1F(MOTO)

2

Service Manual

Parameter Unit Value

Model MV-C12BI MV-C18BI

Product Code CN510N0120 CN510N0130

Power

Supply

Rated Voltage V~ 220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1

Cooling Capacity KW 3.50 4.50
Heating Capacity KW 4.00 5.0
Air ow volume(SH/H/M/L/SL) m

3

/h 650/560/520/450/- 710/670/590/450/-

Dehumidifying Volume L/h 1.4 1.8

Fan Type Centrifugal Centrifugal
Fan Diameter-height mm Φ322–148 Φ322–148
Fan Motor Cooling Speed(SH/H/M/L/SL) rpm 800/700/650/560/- 900/850/750/580/­Fan Motor Heating Speed(SH/H/M/L/SL) rpm 800/700/650/580/- 900/850/750/600/­Fan Motor Power Output W 45 45
Fan motor running current A / /
Fan Motor Capacitor μF / /

Evaporator Material Aluminum n-copper tube Aluminum n-copper tube
Evaporator Pipe Diameter mm Φ7 Φ7
Evaporator Number of Rows-Fin Pitch mm 2-1.4 2-1.4

Evaporator Length(L)XHeight(H)XWidth(W) mm 1320X190.5X25.4 1320X190.5X25.4

Fuse Current A 5 5

Sound Pressure Level(SH/H/M/L/SL) dB (A) 44/41/38/34/- 47/45/41/35/-
Sound Power Level(SH/H/M/L/SL) dB (A) 55/52/49/45/- 58/56/52/46/-

Dimension of Outline(LXWXH) mm 596X596X240 596X596X240
Dimension of Carton Box(LXWXH) mm 775X735X285 775X735X285

Dimension of Package(LXWXH) mm 778X738X300 778X738X300
Net Weight kg 20 20
Gross Weight kg 24 24

Liquid pipe mm Φ6 Φ6
Gas Pipe(to indoor unit) mm Φ9.52 Φ12

2. Specications

2.1 Specication Sheet

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

3

Service Manual

Parameter Unit Value

Model

MV-C24BI

Product Code CN510N0140

Power

Supply

Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1

Cooling Capacity KW 7.10
Heating Capacity KW 8.0
Air ow volume(SH/H/M/L/SL) m

3

/h 1280/1220/1100/880/-

Dehumidifying Volume L/h 2.5

Fan Type Centrifugal
Fan Diameter-height mm Φ450-142
Fan Motor Cooling Speed(SH/H/M/L/SL) rpm 650/620/560/450/­Fan Motor Heating Speed(SH/H/M/L/SL) rpm 650/620/560/460/­Fan Motor Power Output W 45
Fan motor running current A /
Fan Motor Capacitor μF /

Evaporator Material Aluminum n-copper tube
Evaporator Pipe Diameter mm Φ7
Evaporator Number of Rows-Fin Pitch mm 2-1.5

Evaporator Length(L)XHeight(H)XWidth(W) mm 1965X171.5X25.4

Fuse Current A 5

Sound Pressure Level(SH/H/M/L/SL) dB (A) 47/45/41/36/-
Sound Power Level(SH/H/M/L/SL) dB (A) 58/56/52/47/-

Dimension of Outline(LXWXH) mm 840X840X240
Dimension of Carton Box(LXWXH) mm 960X960X310

Dimension of Package(LXWXH) mm 963X963X325
Net Weight kg 26
Gross Weight kg 32

Liquid pipe mm Φ9.52
Gas Pipe(to indoor unit) mm Φ16

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

4

Service Manual

Note: Nominal capacities are based on the follow conditions.

Mode Indoor ( ) Outdoor ( )

Cooling

DB:27 (80.6) DB:35(95)

WB:19(66.2)WB:24(75.2)

Heating

DB:20(68)DB:7(44.6)

WB:--(--)WB:6(42.8)

Piping

Length

5m

The air volume is measured at the relevant standard external static pressure.

Noise is tested in the semianechoic room, so it should be slightly higher in the actual operation due

to environmental change.

5

Service Manual

Unit:mm

MV-C24BI

3. Outline Dimension Diagram

MV-C12BI, MV-C18BI

Item

Model

ABCDEFG

MV-C12BI

670 666 600 496 145 240 596

MV-C18BI

MV-C24BI

950 840 780 680 145 240 -

6

Service Manual

4. Refrigerant System Diagram

7

Service Manual

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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.

600007060110

MV-C12BI, MV-C18BI

8

Service Manual

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

MV-C24BI

9

Service Manual

5.2 PCB Printed Diagram

1

2

3

456789 10

12

11

13

16

1415

No. Name

1

Interface of fan

2

Interface of live wire
Fuse

3
4 Interface of netural wire
5

Air terminal

6

Terminal with outdoor unit

communication wire
7 Water pump control
8

Interface of ambient temperature sensor

9 Interface of tube temperature sensor

10 Water full detection terminal

12 Jumper cap terminal

Up&down swing motor

Display interface

11

14 Wired controller

1613Grounding wire

15 Interface of gate-control detection

● Top view

● Bottom view

10

Service Manual

6. Function and Control

6.1 Remote Controller Introduction

Buttons on remote controller

Introduction for icons on display screen

7

2

1

8

10

12

15

14

13

11

9

6

5

4

3

1 ON/OFF button

2 MODE button

3 +/- button

4 FAN button

5 I FEEL button

11

X-FAN button

Note: X-FAN is the same with BLOW

12 TEMP button

13 TURBO button

15 LIGHT button

14 SLEEP button

10

TIMER ON/TIMER OFF
button

9 CLOCK button

Send signal

Turbo mode

X-fan mode

Set temperature

Set time

TIMER ON / TIMER OFF

Child lock

Up & down swing

Set fan speed

AIR function
I feel

Light

Temp. display type

:Set temp.

:Outdoor ambient temp.

:Indoor ambient temp.

Sleep mode

Clock

Health function

Heat mode

Fan mode

Dry mode

Cool mode

Auto mode

Operation mode

8 button

6 button

7 button

Introduction for buttons on remote controller

Note:

●

After putting through the power, the air conditioner will give out a sound. Operation indictor " " is ON (red indicator).
After that, you can operate the air conditioner by using remote controller.

ON/OFF button1.

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

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

● 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.

11

Service Manual

● After selecting auto mode, air conditioner will operate automatically according to ambient temperature. Set temperature
can’t be adjusted and will not be displayed as well. Press "

FAN" button can adjust fan speed. Press " " button can adjust

fan blowing angle.

● After selecting cool mode, air conditioner will operate under cool mode. Cool indicator " "on indoor unit is ON. Press "+"

or "-" button to adjust set tempe rature. Press "FAN" button to adjust fan speed. Press " " button to adjust fan blowing a

ngle.

● When selecting dry mode, the air conditioner operates at low speed under dry mode. Dry indicator " " on indoor unit is ON

.

Under dry mode, fan speed can’t

be adjusted. Press " " button to adjust fan blowing angle.

● When selecting fan mode, the air conditioner will only blow fan, no cooling and no heating. All indicators are OFF. Operation

indicator is ON. Press

"FAN" button

to adjust fan speed. Press

● When selecting heating mode, the air conditioner operates under heat mode. Heat indicator " " on indoor unit is ON.

Press "+" or "-" button to adjust set temperature. Press "FAN" button to adjust fan speed.

Press " " button to adjust

fan blowing angle. (Cooling only unit won’t receive heating mode signal. If setting heat mode with remote controller,

press ON/OFF button can’t start up the unit).

Note:

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

depend on indoor ambient temperature).

● Set temperature range from remote controller: 16~30

ć

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

MODE button2.

Press this button to select your required operation mode.

AUTOCOOL FANDRY HEAT

" " button to adjust fan blowing angle.

FAN button

I FEEL button

4.

5.

6.

7.

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

( ), high( ).

Note:

● Under AUTO Speed,IDU fan motor will adjust the fan speed (high, medium or

low speed) according to ambient temperature.

● Fan speed under dry mode is low speed.

Press this button to start I FEEL function and " " will be displayed on the remote controller. After this function is set, th

e remoteed

controller will send the detect ambient temperature to the controller and the unit will automatically adjust the indoor temper

ature

according to the detected temperature. Press this button again

to close I FEEL function and " " will disappear.

● Please put the remote controller near user when this function is set. Do not put the remote controller near the object of high
temperature or low temperature in order to avoid detecting inaccurate ambient temperature.

Press this button to set HEALTH function ON or OFF. After the unit is turned on, it defaults to HEALTH function ON.

Press this button to select AIR function ON or OFF.

button

button

(Only available for some models)

● This function is applicable to partial of models.

Auto

+/- button3.

● Press "+" or "-" button once increase or decrease set temperature 1ć.

Holding "+" or "-" button, 2s later

, set temperature

tor on indoor unit will change accordingly. (Temperature can’t be adjusted under auto mode)

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

TIMER ON, TIMER OFF or CLOCK, press "+" or "-" button to adjust time. (Refer

to CLOCK, TIMER ON, TIMER OFF buttons)

● 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.

on remote controller will

12

Service Manual

Press this button to set clock time. " " icon on remote controller will blink. Press

"+" or "-" button within 5s to set clock time.

Each pressing of "+" or "-" button, clock time will increase or decrease 1 minute. If hold "+" or "-" button, 2s later, time will change

quickly. Release this button when reaching your required time. Press "CLOCK" button to confirm the time. " " icon stops blinking.

Note:

● Clock time adopts 24-hour mode.

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

CLOCK button

9.

TIMER ON / TIMER OFF button

10.

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

icon disappears and the word "ON" on remote

controller blinks. Press "+" or "-" button to adjust TIMER ON setting. After each pressing "+" or "-" button, TIMER ON setting will

increase or decrease 1min. Hold "+" or "-" button, 2s later, the time will change quickly until reaching your required time.

Press "TIMER ON" to confirm it. The word "ON" will stop blinking. " " icon resumes displaying. Cancel TIMER ON:

Under the condition that TIMER ON is

8.

Press this button can select up&down swing angle. Fan blow angle can be selected

circularly as below:

● When selecting " ", air conditioner is blowing fan automatically. Horizontal

louver will automatically swing up & down at

● When selecting " ǃ ǃ ǃ ǃ ", air conditioner is blowing fan at fixed

position. Horizontal louver will stop at the fixed position.

● When selecting " ǃ ǃ " , air conditioner is blowing fan at fixed angle.

Horizontal louver will send air at the fixed angle.

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

required angle, release the button.

Note:

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

air conditioner will blow fan automatically.

button

no display
(horizontal louvers stops
at current position)

ON/TIMER OFF is the same.

maximum angle.

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

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

icon disappears and the word "OFF" on remote

controller blinks. Press "+" or "-" button to adjust TIMER OFF setting. After each pressing "+" or "-" button, TIMER OFF setting will

increase or decrease 1min. Hold "+" or "-" button, 2s later, the time will change quickly until reaching your required time.

Press "TIMER OFF" word "OFF" will stop blinking. " " icon resumes displaying. Cancel TIMER OFF. Under the condition that

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

Note:

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

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

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

X-FAN button

11.

12.

Press this button under cool and dry mode to start up x-fan function, and " " icon on remote controller will be displayed.
Press this button again to cancel x-fan

function, and " "icon will disappear.

Note:

● When x-fan function is on, if the air conditioner is turned off, indoor fan will still

operate at low speed for a while to blow the

● During x-fan operation, press X-FAN button to turn off x-fan function. Indoor fan

will stop operation immediately.

TEMP button

By pressing this button, you can see indoor set temperature, indoor ambient temperature or outdoor ambient temperature on indoor

unit’s displa

y. The setting on remote controlleris selected circularly as below:

no display

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

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

residual water inside the air duct.

13

Service Manual

Sketch map for

replacing batteries

TURBO button13.

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

HEAT mode. " " icon is displayed on

remote controller. Press this button again to exit turbo function and " " icon will disappear.

Press this button to turn off display light on indoor unit. " " icon on remote controller disappears. Press this button again to
turn on display light. " " icon is

displayed.

SLEEP button

LIGHT button

14.

15.

● When selecting " " with remote controller, temperature indicator on indoor unit

displays outdoor ambient temperature.

Note:

●

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

unit receives " "signal, while it displays

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

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

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

Under COOL, HEAT mode, press this button to start up sleep function. " " icon is displayed on remote controller.

Press this button again to

cancel sleep function and

" " icon will disappear.

indoor set temperature.

14

Service Manual

6.2 Brief Description of Modes and Functions

1.Basic function of system

(1)Cooling mode

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

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

(2)Drying mode

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

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

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

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

(3)Heating mode

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

(2) Working condition and process for heating mode:

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

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

(4)Working method for AUTO mode:

1.Working condition and process for AUTO mode:

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

according to ambient temperature.

2.Protection function

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

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

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

and Tamb. for cooling only unit.

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

(5)Fan mode

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

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

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 cant be memorized).

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

(7) Health function

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

Turn on the unit by pressing auto button, and the health is defaulted ON.(Health function is not available for this unit)

15

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:

(1) Enter refrigerant recycling function

Within 5min after energizing (unit ON or OFF status is ok), continuously press LIGHT button for 3 times within 3s to enter refrigerant

recycling mode; Fo is displayed and refrigerant recycling function is started. At this moment, the maintenance people closes liquid valve.

After 5min, stick the thimble of maintenance valve with a tool. If there is no refrigerant spraying out, close the gas valve immediately and

then turn off the unit to remove the connection pipe.

(2) Exit refrigerant recycling function

After entering refrigerant recycling mode, when receive any remote control signal or enter refrigerant recycling mode for 25min, the unit will

exit refrigerant recycling mode automatically If the unit is in standby mode before refrigerant recycling, it will be still in standby mode after

nishing refrigerant recycling; if the unit is in ON status before refrigerant recycling, it will still run in 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 compressors minimum stop time. The original minimum stop time is 180s and then we change to:

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

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

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

(13) SE control mode

The unit operates at SE status.

(14) X-fan mode

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

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

(15) 8ºC heating function

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

(16) Turbo fan control function

Set turbo function under cooling or heating mode to enter into turbo fan speed. Press fan speed button to cancel turbo wind.

No turbo function under auto, dry or fan mode.

16

Service Manual

(17)Instructions to the Error Indicating Lamps on the Panel of the Cassette Type Unit.

Power and ON/OFF Indicating Lamp:

It goes red when the unit is powered on while it goes white when the unit is started.

Timer Indicating Lamp:

Timer indicator on indoor unit will be on when timer ON is set under off status and timer OFF is set under on status.

“88” Display:

When there is no error, the dual-8 nixie tube display the set temperature. After receiving the command of displaying

indoor ambient temperature from the remote controller, the dual-8 nixie tube displays indoor temperature for 3s and then

resume to display the set temperature. If there is error, error code will be displayed. If there’s multiple error, error codes

will be displayed in turn.

“Auto” button:

It’s used for turning on or turning off the unit. When use this button to turn in the unit, the unit is under auto mode.

“Test” button:It’s only used for the test units. This button is only valid within 3mins after the unit is energized.

NOTE:

(1) If the light of indoor unit is turned off, when operating the remote controller to send command, the display will be on for 3s and then

off.the remote control command.

(2) When the wired controller is connected, the indoor unit display is invalid and the unit won’t receive

Receiver "88" Dispaly" Auto" Button

"Test" Button

Power

Indicating Lamp

Timer

Indicating Lamp

17

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 rmly

during installation and maintenance.

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

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

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

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

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

replaced by a qualied person.

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 sufcient

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; dont replace it with a cooper wire or
conducting wire.

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

18

Service Manual

Safety Precautions for Installing and Relocating the Unit:

Warnings

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

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

specied refrigerant.

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

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

unqualied refrigerant.

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

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

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

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

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

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

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

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

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

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

Poor connections may lead to electric shock or re.

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

that their terminals receive no external stresses.

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

Safety Precautions for Refrigerant

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

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

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

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

WARNING:

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

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

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

●Do not pierce or burn.

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

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

not contain odour.

●Read specialists manual.

19

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



20

Service Manual

8. Installation

8.1 Installation Dimension Diagram

Indoor

2

3

4

1

21

Service Manual

8.2 Installation of Cassette Type8.2 Installation of Cassette Type

8.2.1. Before Installation

After receiving the machine, please check for any

transport damage. If nding any surface or

internal damage, please immediately report to the
transport company or equipment company in writing.
After receiving the machine, please check the unit and
accessories in reference to the packing list.
Ensure that the model is correct and the machine is in

good condition. Please also check if the specication

and quantity of accessory parts are correct.
Determine the correct handling route and methods, thus
to avoid damaging the unit or causing
possible hazard. For the sake of protection and safety, it
is suggested to move the unit with the
packaging box. Even though it is not permitted to do like
this under special occasions, do not remove the
packaging box, thus to avoid loosening or falling during
handling.

Conrm if the installing foundation is solid. When this

unit is to be installed on the metal section of
the building, make sure that the electrical insulation
must comply with applicable standards.
Ensure that the place of installation is far from the area

where the inammable or explosive

substances are stored, thus to avoid possible explosion

or re due to leakage.

8.2.2. Installation Site

Select an installation site where the following conditions

are fullled and that meets your customer's

approval.
(1) Obstruct should be put away from the intake or outlet

vent of the indoor unit so that the airow

can be blown through all the room.
(2) Make sure that the installation meets the requirement
of the schematic diagram of installation
spaces.
(3) Select the place where can stand 4 times of the
weight of the indoor unit and would not increase
the operating noise and vibration.
(4) The horizontality of the installation place should be
guaranteed.
(5) Select the place where is easy to drain out the
condensate water, and connect with outdoor unit.
(6) Make sure that there are enough space for care and
maintenance, and the height fall between
the indoor unit and ground is above 1800mm.
(7) When installing the suspension bolt, check if the
installation place can stand 4 times of the
weight of the unit. If not, reinforce it before installation.
Note: There will be large amount of greasy dirt
accumulated on the fan, heat exchanger and water
pump located in the dinning room and kitchen, which
would reduce the capacity of the heater exchanger,
lead to leakage and abnormal operation of the water
pump.

8.2.3. Installing the Main Body Unit

(1) Install the hoisting stand on the hoisting screw by using
nuts and gaskets at both the upper and lower sides of the
hoisting stand. To prevent the gasket from breaking off, a
gasket anchor board can be helpful.

(2) Install the paper template on the unit, and x the drain

pipe at the outlet vent.

(3) Adjust the unit to the best position.

(4) Check if the unit is installed horizontally at four

directions. If not, the water pump and the oat switch

would function improperly and even lead to water leakage.

(5) Remove the gasket anchor board and tighten the nut
remained.

(6). Remove the paper template.

53

Note: There will be large amount of greasy dirt accumulated o n the fan, heat exchanger and water

pump located in the dinning room and kitchen, which would reduce the capacity of the heater exchanger,

lead to leakage and abnormal operation of the water pump.

Figure 3-1-24

Models H(mm)

MV-C12BI

240

MV-C18BI

MV-C24BI

Fig.1

Fig.2

22

Service Manual

8.2.3. Installing the Suspension Bolts

(1) Using the installation template, drill holes for bolts (four
holes).

(2) Install the bolts to the ceiling at a place strong enough to
hang the unit. Mark the bolt positions from the installation
template. With a concrete drill, drill for 12.7 mm (1/2”) diameter
holes.

(3) Insert the anchor bolts into the drilled holes, and drive the
pins completely into the anchor bolts with a hammer.

8.2.4. Leveling

The water level test must be done after installing the indoor unit
to make the unit is horizontal, as shown below.

8.2.5. The Panel Installation

(1) See the gure below for the relationship of the front panel

and the connecting pipe.

(2) Place the panel at the unit, and latch the hooks beside and

opposite the swing ap motor.

(3) Latch other two hooks.
(4) Tighten four hexagonal screws under the latches about
15mm.
(5) Adjust the panel along the direction indicated by the arrow
as shown in Fig.8.
(6) Tighten the screws until the thickness of the sealing material
between the panel and the indoor unit reduces to 5-8cm.

(7) Improper screwing of the screws may cause the troubles
shown in Fig9.

(8) If gap still exists between ceiling and decoration panel
after tightening the screws, readjust the height of the indoor
unit. Fig10.

Fig.3

Fig.4

Fig.5

Fig.3 Fig.4 Fig.5

Fig.6

Fig.7

Fig.9

Fig.8

Fig.10

(9) Wire the swing ap motor as shown in Fig11.

Fig.11

23

Service Manual

9. Maintenance

9.1 Error Code List

F0

(

7KH'XDO&RGH
'LVSOD\ZLOOVKRZ
)DQGWKHFRPSOHWH
XQLWVWRSV

,QGHIHFWRI
UHIULJHUDQW

,QGHIHFWRI
UHIULJHUDQW
,QGRRUHYDSRUDWRU
WHPSHUDWXUHVHQVRU
ZRUNVDEQRUPDOO\
7KHXQLWKDVEHHQ
SOXJJHGXSVRPHZKHUH

Full water
protection

Water level

switch

If cut-off of water level switch is
detected for 8s s

uccessively once
energized, the system will enter
full water protection. In this case,
switch off the unit and then switch
it on to eliminate this malfunction.

24

Service Manual

9.2 Troubleshooting for Main Malfunction

●Indoor unit:

1. Malfunction of Temperature Sensor F1, F2

Main detection points:

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

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

● Is the temperature sensor broken?

● Is mainboard broken?

Malfunction diagnosis process:

Is the wiring terminal between the

temperature sensor and the controller

loosened or poorly contacted?

Start

Insert the temperature

sensor tightly

Yes

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

25

Service Manual

2. Malfunction of Blocked Protection of IDU Fan Motor H6

END

No

Yes

No

Ye

s

No

Yes

Yes

Yes

No

No

No

Yes

Yes

No

Turn the fan blades
by hand under
power-off condition

Whether the fan blades
can run smoothly?

Adjust the motor and blade

assembly so that rotor can run

smoothly.

Under power-off condition,

check whether the wiring terminal

between

indoor fan and main

board is loose.

Turn unit on

to check whether the

malfunction is

eliminated.

Turn unit on

to check whether the

malfunction is

eliminated.

Reinsert the wiring
terminal of indoor fan.

It's the malfunction of main board.
Replace a new main board that is
of the same model.

It's the malfunction of main board.
Replace a new main board that is
of the same model.

Replace a new main board that is
of the same model.

It's the malfunction of main board.

Then check whether the voltage
between terminal 2 and terminal 3
of the motor interface is 15VDC.

Connect power and restart the unit.

Test whether the voltage between terminal 1 and terminal 2

of motor interface is within 280~310VDC.

Then check whether there is voltage
between terminal 2 and terminal 4
of the motor interface.

It's the malfunction of motor.
Replace a new motor that is
of the same model.

Start

26

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

27

Service Manual

4. Communication malfunction E6

Start

Cut off power supply. Check if
connection line of IDU and ODU
and the wire inside electric box
are correctly connected.

Correct connection?

Main board matches

with display board? Main board of

IDU matches with that of ODU?

Communication cord is damaged?

Replace IDU's
main board

Malfunction eliminated?

End

Connect the line
according to
wiring diagram.

Match correctly
according to product
specification

Replace
communication
cord

Replace ODU's
main board.

Malfunction eliminated?

Malfunction eliminated?

Malfunction eliminated?

yes

yes

yes

yes

yes

yes

yes

no

no

no

no

no

no

no

28

Service Manual

5.

The refrigerant is leaking

Check the leaking status of refrigerant
and charge refrigerant

Clean the heat exchangers

and remove

blockage of air inlet/outlet.

Heat exchangers are

too dirty or the air inlet/outlet

is blocked.

End

Remove blockage in the system

System is blocked inside

(dirt block, ice block, oil block, Y-valve no

fully open).

Compressor doesn't work

normally. Strange noise or leakage occurs.

Make compressor run normally.

Casing is too hot.

Replace a main
board with the
same model.

Malfunction is

eliminated.

Malfunction is

eliminated.

Malfunction is

eliminated.

Malfunction is

eliminated.

Troubleshooting

for F0 malfunction

Yes

No

No

No

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

29

Service Manual

6. Full Water Protection E9

30

Service Manual

Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting

Set temperature is improper Observe the set temperature on remote controller Adjust the set temperature

Rotation speed of the IDU fan

motor is set too low

Small wind blow Set the fan speed at high or medium

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

9.3 Maintenance Method for Normal Malfunction

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

31

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

38

Service Manual

11. Removal Procedure

Warning: Be sure to wait for a minimum of 20 minutes

after turning off all power supplies and discharge the

refrigerant completely before removal.

1. Loosen the screws

fixing the water tray

Use screwdriver to loosen
the screws fixing the water
tray

2. Remove the water

tray

Remove the water tray

3. Loosen the bolts fixing the fan

Use spanner to loosen the
bolts fixing the fan.

39

Service Manual

4. Remove the fan

Remove the fan

5. Loosen the screws

fixing the motor

Use screwdriver to loosen
the screws fixing the motor

6. Remove the motor and replace it

Remove the motor and
replace it

7. Tighten the screws

fixing the motor

Use screwdriver to tighten
the screws fixing the motor.

40

Service Manual

8. Mount the fan and

tighten the fixing bolts

Mount the fan and use
spanner to tighten the bolts
fixing the fan.

9. Mount the water

tray and tighten the

screws

Use screwdriver to loosen
the screws fixing the water
tray

10.Removal and Installation of Drainage Pump

Loosen the screws

a

b

c

fixing the water tray

Use screwdriver to loosen the screws
fixing the water tray

Remove the water tray

Remove the water pump
and replace it.

Pull out the water outlet pipe and loosen
the screws fixing the water pump.

Pull out the water outlet pipe and use
screwdriver to loosen the screws fixing

the water pump.

41

Service Manual

Ta ke out the pump and replace it

Connect the drainage pipe

and use
screwdriver to tighten the screws fixing
the water pump.

Mount the water tray and tighten the screws

Use screwdriver to loosen the screws

fixing the water tray

e

f

g

42

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

(oF)

Fahrenheit

(oF)

Celsius(oC)

Fahrenheit

display

temperature

(oF)

Fahrenheit

(oF)

Celsius(oC)

Fahrenheit

display

temperature

(oF)

Fahrenheit

(oF)

Celsius(oC)

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

(oF)

Fahrenheit

(oF)

Celsius(oC)

Fahrenheit

display

temperature

(oF)

Fahrenheit

(oF)

Celsius(oC)

Fahrenheit

display

temperature

(oF)

Fahrenheit

(oF)

Celsius(oC)

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

1.Standard length of connection pipe

● 5m, 7.5m, 8m.

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

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

）

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

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

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

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

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

Appendix 2: Conguration of Connection Pipe

Additional refrigerant charging amount for R32

Diameter of connection pipe Indoor unit throttl Outdoor unit throttle

Liquid pipe Gas pipe

Cooling only,cooling

and heating(g / m)

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

Ф6 Ф9.5 or Ф12 16 12 16

Ф6 or Ф9.5 Ф16 or Ф19 40 12 40

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

Ф22.2 / 280 280 280

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

43

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

Pipe

Shaper

Union 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 - 12.7 (1/2”) 1.8 1.0
Ф15.8 - 16 (5/8”) 2.4 2.2

Appendix 3: Pipe Expanding Method

Note:

Note:

Appendix 4: List of Resistance for Temperature Sensor

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

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

-19 138.1 20 18.75 59 3.848 98 1.071

-18 128.6 21 17.93 60 3.711 99 1.039

-17 121.6 22 17.14 61 3.579 100 1.009

-16 115 23 16.39 62 3.454 101 0.98

-15 108.7 24 15.68 63 3.333 102 0.952

-14 102.9 25 15 64 3.217 103 0.925

-13 97.4 26 14.36 65 3.105 104 0.898

-12 92.22 27 13.74 66 2.998 105 0.873

-11 87.35 28 13.16 67 2.896 106 0.848

-10 82.75 29 12.6 68 2.797 107 0.825

-9 78.43 30 12.07 69 2.702 108 0.802

-8 74.35 31 11.57 70 2.611 109 0.779

-7 70.5 32 11.09 71 2.523 11 0 0.758

-6 66.88 33 10.63 72 2.439 111 0.737

-5 63.46 34 10.2 73 2.358 112 0.717

-4 60.23 35 9.779 74 2.28 11 3 0.697

-3 57.18 36 9.382 75 2.206 114 0.678

-2 54.31 37 9.003 76 2.133 115 0.66

-1 51.59 38 8.642 77 2.064 116 0.642

0 49.02 39 8.297 78 1.997 117 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

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

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

-19 181.4 20 25.01 59 5.13 98 1.427

-18 171.4 21 23.9 60 4.948 99 1.386

-17 162.1 22 22.85 61 4.773 100 1.346

-16 153.3 23 21.85 62 4.605 101 1.307

-15 145 24 20.9 63 4.443 102 1.269

-14 137.2 25 20 64 4.289 103 1.233

-13 129.9 26 19.14 65 4.14 104 1.198

-12 123 27 18.13 66 3.998 105 1.164

-11 116.5 28 17.55 67 3.861 106 1.131

-10 110.3 29 16.8 68 3.729 107 1.099

-9 104.6 30 16.1 69 3.603 108 1.069

-8 99.13 31 15.43 70 3.481 109 1.039

-7 94 32 14.79 71 3.364 110 1.01

-6 89.17 33 14.18 72 3.252 111 0.983

-5 84.61 34 13.59 73 3.144 112 0.956

-4 80.31 35 13.04 74 3.04 113 0.93

-3 76.24 36 12.51 75 2.94 114 0.904

-2 72.41 37 12 76 2.844 115 0.88

-1 68.79 38 11.52 77 2.752 116 0.856

0 65.37 39 11.06 78 2.663 117 0.833

1 62.13 40 10.62 79 2.577 118 0.811

2 59.08 41 10.2 80 2.495 11 9 0.77

3 56.19 42 9.803 81 2.415 120 0.769

4 53.46 43 9.42 82 2.339 121 0.746

5 50.87 44 9.054 83 2.265 122 0.729

6 48.42 45 8.705 84 2.194 123 0.71

7 46.11 46 8.37 85 2.125 124 0.692

8 43.92 47 8.051 86 2.059 125 0.674

9 41.84 48 7.745 87 1.996 126 0.658

10 39.87 49 7.453 88 1.934 127 0.64

11 38.01 50 7.173 89 1.875 128 0.623

12 36.24 51 6.905 90 1.818 129 0.607

13 34.57 52 6.648 91 1.736 130 0.592

14 32.98 53 6.403 92 1.71 131 0.577

15 31.47 54 6.167 93 1.658 132 0.563

16 30.04 55 5.942 94 1.609 133 0.549

17 28.68 56 5.726 95 1.561 134 0.535

18 27.39 57 5.519 96 1.515 135 0.521

19 26.17 58 5.32 97 1.47 136 0.509

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

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

-29 853.5 10 98 49 18.34 88 4.75

-28 799.8 11 93.42 50 17.65 89 4.61

-27 750 12 89.07 51 16.99 90 4.47

-26 703.8 13 84.95 52 16.36 91 4.33

-25 660.8 14 81.05 53 15.75 92 4.20

-24 620.8 15 77.35 54 15.17 93 4.08

-23 580.6 16 73.83 55 14.62 94 3.96

-22 548.9 17 70.5 56 14.09 95 3.84

-21 516.6 18 67.34 57 13.58 96 3.73

-20 486.5 19 64.33 58 13.09 97 3.62

-19 458.3 20 61.48 59 12.62 98 3.51

-18 432 21 58.77 60 12.17 99 3.41

-17 407.4 22 56.19 61 11.74 100 3.32

-16 384.5 23 53.74 62 11.32 101 3.22

-15 362.9 24 51.41 63 10.93 102 3.13

-14 342.8 25 49.19 64 10.54 103 3.04

-13 323.9 26 47.08 65 10.18 104 2.96

-12 306.2 27 45.07 66 9.83 105 2.87

-11 289.6 28 43.16 67 9.49 106 2.79

-10 274 29 41.34 68 9.17 107 2.72

-9 259.3 30 39.61 69 8.85 108 2.64

-8 245.6 31 37.96 70 8.56 109 2.57

-7 232.6 32 36.38 71 8.27 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 11 7 2.07

1 153 40 26.15 79 6.33 11 8 2.02

2 145.4 41 25.11 80 6.13 11 9 1.96

3 138.3 42 24.13 81 5.93 120 1.91

4 131.5 43 23.19 82 5.75 121 1.86

5 125.1 44 22.29 83 5.57 122 1.82

6 119.1 45 21.43 84 5.39 123 1.77

7 113.4 46 20.6 85 5.22 124 1.73

8 108 47 19.81 86 5.06 125 1.68

9 102.8 48 19.06 87 4.90 126 1.64

GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070
Tel: [phone]
Fax: [phone]
E-mail: [e-mail] www.gree.com

HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED

Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK
Tel: [phone] Fax: [phone]

For product improvement, specifications and appearance in this manual are subject to change without prior notice.

PARTS GUIDE

MULTI VARIABLE SERIES

MV-C12BI, MV-C18BI, MV-C24BI

MV-C12BI

No Description Part Code Note Qty

Price Code

1 Rear Grill 26909400007 1 AE
2 Brushless DC Motor 15709400004 1 BB
3 Water Tray Assy 01289400004 1 AW
4 Water Pump 4313800005801 1 AY
5 Supporter none 0 ­6 Liquid Level Switch 450102013 1 AL
7 Pump Drainpipe 26909400069 1 AF
8 Water Pump Assy 15409400008 1 AZ
9 Right Side Plate Sub-Assy 01319400013 2 AK
10 Bottom Foam Assy 12509400004 1 AP
11 Base Plate Assy 02229400007 1 AS
12 Body Installing Support 01332705 4 AC
13 Left Side Plate Sub-Assy 01319400012 1 AK
14 Press Plate (Outlet Pipe) 01349400004 1 AD
15 Electric Box Assy 100002060081 1 AZ
16 Terminal Board 420001000002 1 AF
17 Wire Clamp 71010103 1 AB
18 Main Board 300002060012 1 AY
19 Electric Box Cover 01429400003 1 AK
20 Front Side Plate Sub-Assy 01319400014 1 AL
21 Drain Hose Sub-Assy 007008000001 1 AG
22 Room Sensor 39000191 1 AD
23 Tube sensor 3900012128 1 AD
24 Remote Controller 305100491_L41851 1 AT
25 Evaporator Assy 01029400058 1 BG
26 Supporter 01809400007 3 AD
27 Centrifugal Fan 10429400001 1 AW
28 Diversion Circle 10479400001 1 AG

1 Front Grill 26909400010 1 AL
2 Fastener Sub-assy 02209400001 2 AB
3 Receiver Board 30261016 1 AM
4 Guide Louver 26909400014 4 AF
5 Front Case 26909400009 1 AQ
6 Step Motor 15729401 4 AG
7 hook 02229400009 2 AD
8 Gland Bush 26909400012 4 AB
9 Corner Cover 26909400011 4 AD
10 Axile Bush none 0 ­11 Filter Sub-Assy 11729400001 1 AD
12 Front Grill Assy

01579400002_L41851

1 -

MODEL: MV-C12BI Cassette unit

The data are subject to change without notice.

MODEL: MV-C12BI Cassette unit: PANEL

MV-C18BI

No Description Part Code Note Qty

Price Code

1 Rear Grill 26909400007 1 AE
2 Diversion Circle 10479400001 1 AG
3 Water Tray Assy 01289400004 1 AW
4 Centrifugal Fan 10429400001 1 AW
5 Supporter 01809400007 3 AD
6 Baffle Plate Sub-assy 01359400002 1 AF
7 Liquid Level Switch 450102013 1 AL
8 Pump Drainpipe 26909400069 1 AF
9 Left Side Plate Sub-Assy 01319400012 1 AK
10 Press Plate (Outlet Pipe) 01349400004 1 AD
11 Front Side Plate Sub-Assy 01319400014 1 AL
12 Capacitor none 0 ­13 Terminal Board none 0 ­14 Terminal Board 420001000002 1 AF
15 Main Board 300002060012 1 AY
16 Electric Box Assy 100002060083 1 AZ
17 Body Installing Support 01332705 4 AC
18 Base Plate Assy 02229400007 1 AS
19 Right Side Plate Sub-Assy 01319400013 2 AK
20 Water Pump 4313800005801 1 AY
21 Evaporator Assy 01029400013 1 BG
22 Brushless DC Motor 15709400004 1 BB
23 Remote Controller 305100491_L41851 1 AT
24 Drain Hose Sub-Assy 007008000001 1 AG
25 Tube sensor 3900012128 1 AD
26 Room Sensor 39000191 1 AD

1 Front Grill 26909400010 1 AL
2 Fastener Sub-assy 02209400001 2 AB
3 Receiver Board 30261016 1 AM
4 Guide Louver 26909400014 4 AF
5 Front Case 26909400009 1 AQ
6 Step Motor 15729401 4 AG
7 Hook 02229400009 2 AD
8 Gland Bush 26909400012 4 AB
9 Corner Cover 26909400011 4 AD
10 Axile Bush none 0 ­11 Filter Sub-Assy 11729400001 1 AD
12 Front Grill Assy 01579400002_L41851 1 -

MODEL: MV-C18BI Cassette unit

The data are subject to change without notice.

MODEL: MV-C18BI Cassette unit: PANEL

MV-C24BI

No Description Part Code Note Qty

Price Code

1 Tube Exit Plate Assy 01382715 1 AE
2 Shell Assy 01432703 1 BC
3 Body Installing Plate 01332701 4 AC
4 Front Side Plate assy 01302718 1 AP
5 Left Side Plate Assy 01302715 1 AK
6 Base Plate Assy 01222701 1 AX
7 Rear Side Plate Assy 01302714 1 AP
8 Bottom Foam Assy 52012722 1 AR
9 Motor Gasket 76712711 4 AC
10 Motor support none 0 ­11 Fan Motor 1570940000401 1 ­12 Centrifugal Fan 10312705 1 AX
13 Connected Board Assy of Evaporator 01074042 1 AG
14 Filter Sub-Assy none 0 ­15 Drain Hose Sub-Assy 05339400001 1 AG
16 Water Tray Assy 000069000104 1 AY
17 Electric Base Plate 01412721 1 AK
18 Diversion Circle 10372701 1 AH
19 Electric Box Assy 100002060082 1 ­20 Transformer none 0 ­21 Terminal Board 420001000002 1 AF
22 Electric Box Cover 0142410004801A 1 AL
23 Electric Box Cover Sub-Assy1 none 0 ­24 Temperature Sensor 390001921G 1 AD
25 Room Sensor 390001911 1 AD
26 Electric Box Cover Sub-Assy2 none 0 ­27 Electric Box Cover II none 0 ­28 Main Board 300002060012 1 AY
29 Capacitor CBB61 none 0 ­30 Evaporator Assy 011001060292 1 ­31 Evaporator Support Assy 01072703 2 AD
32 Magnetic Ring 49010104 1 AC
33 Water Pump 43138000058 1 AX
34 Water Pump Assy 15409400009 1 BA
35 Pump Support none 0 ­36 Water Level Switch 45020216 1 AQ
37 Pump Drainpipe 26909400068 1 AG
38 Right Side Plate Assy 01302716 1 AK
39 Remote Controller 305100491_L41851 1 AT
40 Pump Cover Board Assy 01252713 1 AC
41 Display Board

30564103_L41851

1 BF

MODEL: MV-C24BI Cassette unit

The data are subject to change without notice.

No Description Part Code Note Qty

Price Code

1 Front Grill 26909466 1 AP
2 Hanging Ring 70810101 4 AD
3 Outer Conner Cover Sub-assy 01269410 4 AE
4 Louver Motor Sub-assy 15409407 4 AG
5 Step Motor 15729401 1 AG
6 Crank 10582070 1 AB
7 Inner Conner Cover IV Sub-assy 01269411 1 AE
8 Inner Conner Cover III Sub-assy 01269412 1 AE
9 Foam 52069409 4 AF
10 Foam 52069410 4 AF
11 Inner Conner Cover II Sub-assy 01269413 1 AE
12 Display Board none 0 ­13 Inner Conner Cover I Sub-assy 01269414 1 AE
14 Axile Bush 10542036 4 AB
15 Guide Louver 10619406 4 AF
16 Left Axile Bush 10512037 4 AB
17 Magnet Sub-assy 70842705 1 AE
18 Front Panel Assy 01549401 1 AY
19 Filter Sub-Assy 11729405 1 AM
20 Clamp Sub-Assy 000101000001 1 AB
21 Front Grill Assy

01579400004_L41851

1 -

MODEL: MV-C24BI Cassette unit: PANEL

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]