Gree GWH(18)MC-K3DNA3B, GWH(12)MB-K3DNA2B, GWH(18)MC-K3DNA2B, GWH(12)MB-K3DNA3B, GWH(09)MA-K3DNB8B Service Manual

MODELS: GWH(09)MA-K3DNA2B/I

GWH(12)MB-K3DNA2B/I
GWH(18)MC-K3DNA2B/I
GWH(07)MA-K3DNA3B/I
GWH(09)MA-K3DNA3B/I
GWH(12)MB-K3DNA3B/I
GWH(18)MC-K3DNA3B/I
GWH(09)MA-K3DNB8B/I
GWH(12)MB-K3DNB8B/I
GWH(07)MA-K3DNC5B/I
GWH(09)MA-K3DNC5B/I
GWH(12)MB-K3DNC5B/I
GWH(18)MC-K3DNC5B/I
GWH(07)MA-K3DNB8B/I(Cold plasma)
GWH(09)MA-K3DNB8B/I(Cold plasma)
GWH(12)MB-K3DNB8B/I(Cold plasma)
GWH(18)MC-K3DNB8B/I(Cold plasma)

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

Service Manual

Change for Life

Table Contents

Summary and Features

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

Part 1 Safety Precautions

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

Part 2 Specifications

..................................................................................................... 3

2.1 Unit Specifications ..................................................................................................3

2.2 Capacity Variation Ratio According to Temperature...............................................4

Part 3 Construction Views

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

Part 4 Refrigerant System Diagram

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

5.1 Electrical Data.........................................................................................................7

5.2 Electrical Wiring.......................................................................................................7

Part 5 Schematic Diagram

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

6.1 Remote Control Operations 11

6.2 Description of Each Control Operation..................................................................

15

Part 6 Function and Control

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

Part 7 Installation Manual

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

18

5.3 Printed Circuit Board...............................................................................................9

7.1 Notices for Installation............................................................................................18

7.3 Install Indoor Unit..................................................................................................20

7.4 Check After Installation and Test Operation

.......................................................22

..........................................................21

7.2 Installation Drawing

........................................................................................19

Part 8 Exploded Views and Parts List

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

23

Part 9 Troubleshooting

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

39

9.1

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

39

9.2

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

42

Part10 Removal Procedure

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

48

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

7.5 Installation and Maintenance of Healthy Filter

Malfunction Display

How to Check Simply the Main Part

1

Summary and features

Indoor Unit

Remote Controller

YT1F

Summary and features

GWH(07)MA-K3DNA3B/I

GWH(09)MA-K3DNA3B/I

GWH(12)MB-K3DNA3B/I

GWH(18)MC-K3DNA3B/I

FAN

MODE

IFEEL

CLOCK

TIMER
ON

X-FAN TEMP

TIMER
OFF

TURBO SLEEP LIGHT

GWH(09)MA-K3DNA2B/I

GWH(12)MB-K3DNA2B/I

GWH(18)MC-K3DNA2B/I

GWH(09)MA-K3DNB8B/I

GWH(12)MB-K3DNB8B/I

GWH(07)MA-K3DNB8B/I(Cold plasma)

GWH(09)MA-K3DNB8B/I(Cold plasma)

GWH(12)MB-K3DNB8B/I(Cold plasma)

GWH(18)MC-K3DNB8B/I(Cold plasma)

GWH(07)MA-K3DNC5B/I

GWH(09)MA-K3DNC5B/I

GWH(12)MB-K3DNC5B/I

GWH(18)MC-K3DNC5B/I

2

Safety Precautions

1.Safety Precautions

Installing, starting up, and servicing air conditioner can be
hazardous due to system pressure, electrical components,
and equipment location, etc.

Only trained, qualified installers and service personnel are
allowed to install, start-up, and service this equipment.
Untrained personnel can perform basic maintenance fun­ctions such as cleaning coils. All other operations should
be performed by trained service personnel.

When handling the equipment, observe precautions in the
manual and on tags, stickers, and labels attached to the
equipment. Follow all safety codes. Wear safety glasses
andwork gloves. Keep quenching cloth and fire extinguisher
nearby when brazing.

Read the instructions thoroughly and follow all warnings or
cautions in literature and attached to the unit. Consult local
building codes and current editions of national as well as
local electrical codes.

Recognize the following safety information:

Incorrect handling could result in
personal injury or death.

Incorrect handling may result in
minor injury,or damage to product
or property.

Warning

Caution

Caution

Warning

All electric work must be performed by a licensed technician
according to local regulations and the instructions given in
this manual.

Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out
and tag switch with a suitable warning label.

Never supply power to the unit unless all wiring and tub­ing are completed, reconnected and checked.

This system adopts highly dangerous electrical voltage.
Incorrect connection or inadequate grounding can cause
personal injury or death. Stick to the wiring diagram and
all the instructions when wiring.

Have the unit adequately grounded in accordance with
local electrical codes.

All installation or repair work shall be performed by your dea­ler or a specialized subcontractor as there is the risk of fire,
electric shock, explosion or injury.

Have all wiring connected tightly. Loose connection may
lead to overheating and a possible fire hazard.

Make sure the outdoor unit is installed on a stable, level
surface with no accumulation of snow, leaves, or trash
beside.

Make sure the ceiling/wall is strong enough to bear the
weight of the unit.

Make sure the noise of the outdoor unit does not disturb
neighbors.

Follow all the installation instructions to minimize the risk
of damage from earthquakes, typhoons or strong winds.

Avoid contact between refrigerant and fire as it generates
poisonous gas.

Apply specified refrigerant only. Never have it mixed with
any other refrigerant. Never have air remain in the
refrigerant line as it may lead to rupture and other hazards.

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

Should there be refrigerant leakage, the density of refri­gerant in the air shall in no way exceed its limited value,
or it may lead to explosion.

Keep your fingers and clothing away from any moving
parts.

Clear the site after installation. Make sure no foreign ob­jects are left in the unit.

Always ensure effective grounding for the unit.

Never install the unit in a place where a combustible gas
might leak, or it may lead to fire or explosion.

Properly insulate any tubing running inside the room to
prevent the water from damaging the wall.

Make a proper provision against noise when the unit is
installed at a telecommunication center or hospital.

Provide an electric leak breaker when it is installed in a
watery place.

Never wash the unit with water.

Should any emergency occur, stop the unit and discon­nect the power immediately.

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

Never touch the heat exchanger fins with bare hands.
Never touch the compressor or refrigerant piping without
wearing glove.

Do not have the unit operate without air filter.

3

2.Specifications

2.1 Unit Specifications

Specifications

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

Model

GWH(07)MA-K3DNA3B/I
GWH(07)MA-K3DNC5B/I

GWH(07)MA-

K3DNB8B/I(Cold plasma)

GWH(09)MA-K3DNA2B/I
GWH(09)MA-K3DNA3B/I
GWH(09)MA-K3DNB8B/I
GWH(09)MA-K3DNC5B/I

GWH(09)MA-

K3DNB8B/I(Cold plasma)

GWH(12)MB-K3DNA2B/I
GWH(12)MB-K3DNA3B/I
GWH(12)MB-K3DNB8B/I
GWH(12)MB-K3DNC5B/I

GWH(12)MB-

K3DNB8B/I(Cold plasma)

GWH(18)MC-K3DNA2B/I
GWH(18)MC-K3DNA3B/I
GWH(18)MC-K3DNC5B/I

GWH(18)MC-

K3DNB8B/I(Cold plasma)

Product Code

CB171N0400
CB179N00900
CB174N02100

CB181N02700

CB171N0340
CB174N01900
CB179N01000
CB174N01901

CB181N02800

CB171N0350
CB174N02000
CB179N01100
CB174N02001

CB181N02900

CB171N0360
CB179N01200
CB174N02200

0035005300620012)W()gnilooC(yticapaC

0085008300820062)W()gnitae

H(yticapaC

Fan Motor Speed (r/min)
(SH/H/M/L)

1200/1050/920/730 1260/1050/920/730 (1260)/1070/900/730 1350/1200/1050/900

058036005054)h/³m(wolfriA

02020101)W(rotoMnaFfotuptuO

Input Power of Heater
(W)

////

Fan Motor Capacitor (ȝ 5.1111)F

84.073.032.032.0)A(A

LRrotoMnaF

nafwolfssorCnafwolfssorCnafwolfssorCnafwolfssorCepyTnaF

Diameter-Length (mm) ĭ85X596 ĭ85X596 ĭ92X645 ĭ98X710

Evaporator Aluminum fin-copper tube Aluminum fin-copper tube Aluminum fin-copper tube Aluminum fin-copper tube

Pipe Diameter (mm) ĭ7 ĭ7 ĭ7 ĭ7

4.1-24.1-25.1-25.

1-2)mm(paGniF-woR

Coil length (l)Xheight
(H)X coil width (L)

581X264X25.4 581X264X25.4 645X267X25.4 715X304.8X25.4

Swing Motor Model MP24AA MP24AA MP24AA MP28VB

Output of Swing Motor
(W)

25.15.15.1

A51.3BCPA51.3BCPA51.3BCPA51.3BCP)A(esuF

Sound Pressure Level dB
(A) (SH/H/M/L/SL)

36/34/31/28/- 37/34/31/28/- 38/34/32/30/- 46/43/40/36/-

Sound Power Level dB
(A) (SH/H/M/L/SL)

46/44/41/38/- 47/44/41/38/- 48/44/42/40/- 56/53/40/36/-

Dimension (WXHXD) (
mm)

790X265X170 790X265X170 845X275X180 940X298X200

Dimension of Package
()(mm)

Liquid connections
Diameter

ĭ6(1/4ͳ) ĭ6(1/4ͳ) ĭ6(1/4ͳ) ĭ6(1/4

ͳ

)

Gas connections
Diameter

ĭ9.52(3/8ͳ) ĭ9.52(3/8ͳ)

ĭ9.52(3/8”)

ĭ12(1/2ͳ)

Net Weight /Gross
Weight (kg)

71/3131/0121/921/9

Dimension of Carton
Box (LXWXH)

870X248X355 915X255X355870X248X355 1010X285X380

LXWXH

873X251X370 918X258X370873X251X370 1013X288X395

4

2.2 Noise Criteria Curve Tables for Both Models

Specifications

.

.

.

.

0

10

Noice/dB(A)

20

30

40

50

60

Low

Middle

High Super High

Indoor Fan Motor Rotating Speed

5

Q

SR

W

H

D

ĭ;

Q

SR

ĭ;

Q

SR

ĭ;

3. Construction Views

Constrction views

7K&09K

.

18K

Model(mm) W H D Q R S

7K&09K 790 6 170 3 60 10

1K847 180 134 40 171

18K 940 98 00 108 694 138

6

4. Refrigerant System Diagram

Cooling & Heating Models

Refrigerant System Diagram

outdoor

indoor

D1

C

1

B1

A1

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

Note: Not available for 14K/18K
model

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

Note: Not available for 14K/18K model

7

5. Schematic Diagram

5.1 Electrical Data

5.2 Electrical Wiring

Schematic Diagram

Symbol Color symbol Symbol Color symbol

WH WHITE BN BROWN

YE YELLOW BU BLUE

RD

RED

BK

BLACK

YEGN YELLOW GREEN VT VIOLET

OG ORANGE PROTECTIVE EARTH

SAT OVERLOAD COMP COMPRESSOR

Meaning of marks

AC-L

3BK

TEM.SENSOR

TEM.SENSOR

PE

BK

ROOM

TUBE

M2

SWING-UD

ROOM

RT2

AP2

2BN

PG

4YEGN

0

M1

1BU

FAN

Outdoor Unit

BN

2

YEGN

3

BU

XT

N(1)

TUBE

0

RT1

SWING
MOTOR

COM-OUT

N

PGF

MOTOR

CAP

JUMP

DISP2DISP1

AP1

RECEIVER AND

DISPLAY BOARD

BU

RD

HEALTH-N

HEALTH-L

GENERATOR

COOL PLASMA

NOTE:The parts with broken line is applicable
to the models with COOL PLASMA GENERATOR

EVAPORATOR

For 07/09/12K Unit

8

Schematic Diagram

For 18K Unit

JUMP

CAP

EVAPORATOR

PE

TUBE

ROOM

N

DISP2

DISP1

AC-L

3BK

TEM.SENSOR

TEM.SENSOR

BK

AP1

ROOM

RT1

0

AP2

2BN

4YEGN

1BU

Outdoor Unit

BN

2

YEGN

3

BU

XT

N(1)

TUBE

0

RT2

COM-OUT

SWING-UD

PGFPG

FAN MOTOR

RECEIVER AND

DISPLAY BOARD

HEALTH-NHEALTH-L

COOL PLASMA
GENERATOR

BURD

SWING

MOTOR

M2

M1

(optional)

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

9

5.3 Printed Circuit Board

Schematic Diagram

BOTTOM VIEW

For 07/09/12K Unit

TOP VIEW

1

2

354678

9

10

1112

13

1

Power supply live wire
connector

5 Indoor fan wire terminal 9 Jumper cap terminal

2

Power supply neutral wire
connector

6

indoor and outdoor unit
communication wire terminal

10 Display panel terminal

3 Fan capacitor 7

Up & down swing control
terminal

11

Indoor ambient temperature
sensor

4

Health function
terminal(optional)

8 Indoor fan feedback terminal 12

Indoor pipe temperature
sensor

13 Protective tube

10

Schematic Diagram

BOTTOM VIEW

TOP VIEW

For 18K Unit

1

2

345 6 7

8

9

10

11

1213

14

1

Power supply live wire
connector

2

Power supply neutral wire
connector

3 Protective tube

4 Fan capacitor

5 PG motor connector

6 Auto button

7 Up & down swing connector

8 PG motor fan feedback terminal

9 Display panel connector

10

Indoor and outdoor unit
communication wire terminal

11 Jumper cap terminal

12

Indoor ambient temperature
sensor

13 Indoor pipe temperature sensor

14

Health function
terminal(optional)

11

Function and Control

6. Function and Control

6.1 Remote Control Operations

ON/OFF
Press it to start or stop operation.

- :
Press it to decrease temperature setting.
+:
Press it to increase temperature setting.
FAN
Press it to set fan speed.
MODE
Press it to select operation mode (AUTO/COOL/DRY/FAN/HEAT).
I FEEL

Press it to set HE ALTH function

Press it to set AIR function.
CLOCK
Press it set clock.
TIMER ON
Press it to set auto-on timer.

Press it set swing angle.
X-FAN
TEMP
TIMER OFF
Press it to set auto-off timer
TURBO
SLEEP
LIGHT
Press it to turn on/off the light.

1

6

7

5

3

2

4

11

10

14

9

12

13

15

16

17

3

14

9

10

13

16

12

5

4

15

11

8

17

7

2

1

6

8

18

23

24

293031

19 20 21 22

26

28

27

25

MODE icon:

18

If MODE button is pressed, current operation mode icon (AUTO), ( COOL), (DRY), (FAN) or (HEAT only for heat pump
models) will show.

(X-FAN is the alternative expression of BLOW for the purpose of understanding.)

12

Function and Control

19

SLEEP icon :

is displayed by pressing the SLEEP button. Press this button again to clear the display.

TEMP icon:

Pressing TEMP button, (set temperature), (ambient temperature), (outdoor ambient temperature) and blank is displayed circularly.

Up & down swing icon:

is displayed when pressing the up & down swing button. Press this button again to clear the display.

LIGHT icon:

is displayed by pressing the LIGHT button. Press LIGHT button again to clear the display.

LOCK icon:

is displayed by pressing "+" and “-” buttons simultaneously. Press them again to clear the display.

SET TIME display:

After pressing TIMER button, ON or OFF will blink.This area will show the set time.

TURBO icon:

is displayed when pressing the TURBO button.Press this button again to clear the display.

DIGITAL display:

This area will show the set temperature. In SAVE mode,"SE" will be displayed. During defrosting operation, “H1” will be displayed.

AIR icon:

is displayed when pressing the AIR button.Press this button again to clear the display.

I FEEL icon:

is displayed when pressing the I FEEL button. Press this button again to clear the display.

FAN SPEED display:

Press FAN button to select the desired fan speed setting (AUTO Low-Med-High).Your selection will be displayed in the LCD windows,

except the AUTO fan speed.

HEALTH icon:

is displayed when pressing the HEALTH button. Press this button again to clear the display.

X-FAN icon:

is displayed when pressing the X-FAN button. Press this button again to clear the display.

21

20

22

23

24

25

26

27

28

29

30

31

1

2

3

4

5

ON/OFF:

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

-:

Press this button to decrease set temperature. Hold it down for above 2 seconds to rapidly decrease set temperature. In AUTO mode, set

temperature is not adjustable.

+:

Press this button to increase set temperature. Hold it down for above 2 seconds to rapidly increase set temperature. In AUTO mode, set tem-

perature is not adjustable.

FAN :

This button is used for setting Fan Speed in the sequence that goes from AUTO, , to then back to Auto.

Low speed Medium speed High speed

MODE :

Each time you press this button, a mode is selected in a sequence that goes from AUTO,COOL,DRY, FAN,and HEAT *, as the following:

*Note: Only for models with heating function.

After energization, AUTO mode is defaulted. In AUTO mode, the set temperature will not be displayed on the LCD, and the unit will automati-

cally select the suitable operation mode in accordance with the room temperature to make indoor room comfortable.

,

AUTO

AUTO COOL DRY FAN HEAT *

13

Function and Control

6

8

7

9

10

11

12

13

14

15

16

17

I FEEL:

Press this button to turn on I FEEL function. The unit automatically adjust temperature according to the sensed temperature. Press this button

again to cancel I FEEL function.

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.

CLOCK :

Pressing CLOCK button, blinks. Within 5 seconds, pressing + or - button adjusts the present time. Holding down either button above 2

seconds increases or decreases the time by 1 minute every 0.5 second and then by 10 minutes every 0.5 second. During blinking after

setting, press CLOCK button again to confirm the setting, and then will be constantly displayed.

TIMER ON :

Press this button to initiate the auto-ON timer. To cancel the auto-timer program, simply press this button again.

After pressing this button, disappear sand " ON " blink s . 00:00 is displayed for ON time setting. Within 5 seconds, press + or - button to

adjust the time value. Every press of either button changes the time setting by 1 minute. Holding down either button rapidly changes the time

setting by 1 minute and then 10 minutes. Within 5 seconds after setting, press TIMER ON button to confirm.

Press this button to set up & down swing angle, which circularly changes as below:

This remote controller is universal. If any command , or is sent out, ，　　　　，　　　the unit will carry out the command as

indicates the guide louver swings as:

X-FAN:

Pressing X -FAN button in COOL or DRY mode, the icon is displayed and the indoor fan will continue operation for 10 min utes 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.

TEMP:

Press this button, could select displaying the indoor setting temperature or indoor ambient temperature.When the indoor unit firstly power on

it will display the setting temperature, if the temperature's displaying status is changed from other status to" ",displays the ambient temp-

erature, 5s later or within 5s, it receives other remote control signal that will return to display the setting temperature. if the users haven't set

up the temperature displaying status,that will display the setting temperature.

TIMER OFF :

Press this button to initiate the auto-off timer. To cancel the auto-timer program, simply press the button again.TIMER OFF setting is the

same as TIMER ON.

TURBO:

Press this button to activate / deactivate the Turbo function which enables the unit to reach the preset temperature in the shortest time. In

COOL mode, the unit will blow strong cooling air at super high fan speed. In HEAT mode, the unit will blow strong heating air at super high

fan speed.

SLEEP:

Press this button to go into the SLEEP operation mode. Press it again to cancel this function. This function is available in COOL, HEAT (Only

for models with heating function) or DRY mode to maintain the most comfortable temperature for you.

LIGHT:

Press LIGHT button to turn on the display's light and press this button again to turn off the display's light. If the light is turned on, is dis-

played. If the light is tunrned off , disappears.

AUTO

14

Replacement of Batteries

1.Remove the battery cover plate from the rear of the remote controller.

(As shown in the figure)

2.Take out the old batteries.

3.Insert two new AAA1.5V dry batteries, and pay attention to the polarity.

4. Reinstall the battery cover plate.

★Notes:

●When replacing the batteries, do not use old or different types of batteries,

otherwise, it may cause malfunction.

●If the remote controller will not be used for a long time, please

remove batteries to prevent batteries from leaking.

●The operation should be performed in its receiving range.

●It should be kept 1m away from the TV set or stereo sound sets.

●If the remote controller does not operate normally, please take the

batteries out and reinsert them after 30 seconds. If it still can't operate properly,

replace the batteries.

Sketch map for replacing batteries

18

19

Combination of "+" and "-" buttons: About lock

Press "+ " and "-" buttons simultaneously to lock or unlock the keypad. If the remote controller is locked, is displayed. In this case,

pressing any button, blinks three times.

Combination of "MODE" and "-" buttons: About switch between Fahrenheit and Centigrade At unit OFF, press "MODE" and "- " buttons

℃

and

℉

simultaneously to switch between



Function and Control

15

6.2 Description of Each Control Operation

Function and Control

A

B

C

B

A

Cooling Only

(1) Under this mode, fan and swing run at preset status, the temperature setting range is 16-30ć.

(2) Under malfunction for outdoor unit and protection stop, the indoor unit runs with the original status, and display malfunction.
(3) The indoor fan stops when the modes conflict with each other.

2. Dry Mode

(1) Under this mode, the indoor fan runs with low speed, and swing runs at preset status, the temperature setting range is 16-30
(2) Under malfunction for outdoor unit and protection stop, the indoor unit runs with the original status, and display malfunction.

3. Heating Mode

(1) Under this mode, the temperature setting range is 16-30ć.

(2) Working condition and Process of Heating
When the unit is ON and in heating mode, indoor fan starts cold air prevention operation; when the unit is off and the

indoor fan stopped before, it blows residual heat.

(3) Protection Function. The compressor stops as the malfunction (including any temperature sensor malfunction) in

heating mode, the indoor fan runs with blowing residual heat.

ć.

4. Working Methods of Auto Mode

1) When Tamb.≥26ć , it operates in Cool mode.

2) For heat pump unit, when Tamb.≤22ć, it operates in Heat mode.

3) When 22ć< Tamb.< 26ć, it operates in auto fan mode upon initial startup of the unit. When changing to auto mode from

other modes, it will keep the previous operation mode (when it enter Dry mode, it operates in auto fan mode.).

5. Fan Mode

Only indoor fan operates in Fan mode. Under auto fan speed, it runs in cooling auto fan mode.

I. Basic Operation Mode

1. Cool; 2.Dry; 3.Heat; 4.Auto; 5.Fan

II. Basic Functions

indoor temperature---target temperature

target temperature---indoor temperature

( F)

16

Function and Control

Tset

Tset+1℃

Tset+2℃

Tset+3℃

1H 2H 3H 4H

Tset

1H 2H 3H 4H

Tset-1℃

Tset-2℃

Tset-3℃

1. Buzzer

The buzzer will give out a beep when the controller is energized, receiving signal from remote controller and auto button.

2. Auto Button

Press this button once, it will operate in Auto mode, and indoor fan operates in Auto fan mode and swing. When the unit is on,

pressing this button will turn off the unit.

3. Auto Fan

a. Auto fan speed in Heat mode

When Tamb.≤Tpreset, the indoor fan operates at high speed;

When Tpreset<Tamb.<Tpreset+2ć, the indoor fan operates at middle speed;

When Tamb≥Tpreset+2ćˈthe indoor fan operates at low speed.

b. Auto fan speed in CooL and Fan mode

When Tamb≥Tpreset+3ćˈthe indoor fan operates at high speed;

When Tpreset<Tamb.<Tpreset+3ć, the indoor fan operates at middle speed;

When Tamb.≤Tpreset+1 , the indoor fan operates at low speed.

c. The auto fan speed is at low speed in Dry mode.

Note: Under auto fan speed, it will shift between high speed and middle speed, middle speed and low speed, high speed

and low speed, the operation time must be 3.5min at least.

ć

4. Sleep

5. Timer Function

(1) General Timer:

1.1 Time On: if Timer On is set when the system is,the controller will operate in the original setting mode after reaching the

timer on time. The timer interval is 0.5h, and the setting range is 0.5-24h.

1.2 Timer Off: Timer Off can be set when the unit is on. The unit will be off when timer off time is reahced. The timer

interval is 0.5h, and the setting range is 0.5-24h.

(2) Clock Timer:

2.1 Timer On: If Timer On is set when the system runs, it will continue to run; if Timer On is set when the system is off, the

system will start to run in the original setting mode when timer on time is reached.

2.2 Timer Off: If timer off is set when the system is off, the system keeps stand-by status; if timer off is set when the system

is on, the system stops when reaching timer off time.

III. Other Control

4.1 The unit will select suitable sleep curve according to set temperature.

4.2 Sleep curve in Heat mode

4.3 Sleep curve in Cool mode