Ultra-thin Split Unit - Lomax

C GREE SY/AZ 

Install Unit: 

Tel: 

GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI 

Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China 

Tel: (0756) 8617555 (Customer Service Center) 

Postcode: 519070 

Website: www.gree.com.cn 

Thank you very much for choosing GREE air conditioner. 

For correct use of this unit, please read this Manual carefully 

before using and please keep it for future consultation. 

Ultra-thin Split Unit 

This unit is suitable for following models: 

GWHD09B2NK3AB 

GWHD12B2NK3AB 

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

CONTENT 

and Usage 

Structure Principle 

Structure and Function 1 

Usage Notice 2 

Specification and Technical Parameter 5 

Names and Functions of Wireless Remote Control 6 

Operation Guideline 8 

Install Notice 9 

Installation 

Install of Indoor Unit 12 

Install of Outdoor Unit 15 

Trial Run and Check Items after Installation 17 

Maintenance 

Maintenance 19 

When Unit Cannot Work Normally 20 

Thank you for choosing this air conditioner. For correct use of this unit, 

please read this Manual carefully and keep it for future consultation.

Structure Principle and Usage 

◆ 

Structure and Function 

Panel 

Air in 

Filter 

Indoor 

Unit 

Wiring cover 

Air out 

Power plug 

Wireless remote 

control 

: Heat (This light doesn't on in cool only unit) 

: Cool / Dry 

: Run 

Drainage hose 

: Auto 

Air in 

wire 

pipe and connect 

Connect 

Air outlet 

grill 

Outdoor 

Unit 

Air out


Usage Notice (Read the following items carefully before using) 

WARNING 

Ensure power plug has 

been inserted firmly. 

Otherwise electric shock or 

fire may occur. 

Don't plug out power plug 

when the unit is operating. 



Don't damage wire or use 

the unappointed wire. 



Don't share the socket with 

other appliances or use the 

prolonged wire. 



Don't operate the unit by 

wet hand. Or electric shock 

may occur. 

Don't insert fingers or stick 

like things into air intake or 

outlet vent. Otherwise damage 

may occur. 

Danger 

Don't apply the cool air to 

body for a longtime, and don't 

set indoor temp. too low. It is 

not good for health. 

If abnormal phenomenon 

(like buring odor etc.) occur, 

turn off power supply at once 

and contact with our service 

center. If abnormal state is 

remained, the unit may damage 

and even cause electric shock 

or fire. 

Cut off 

power 

Don't repair the unit by 

yourself. Incorrect repair would 

cause electric shock or fire. 

Contact our service center 

to have the unit repaired.


★ Earth: Do connect 

earth reliably! Earth wire 

should be connected onto 

special earth settings of the 

building. If there is no the setting 

connect earth by professional 

personnel. Don't connect the 

wire to gas pipe, water pipe, 

blowing pipe and other places 

that professional personnel 

considers it unreliable. 

★ When the unit will not be 

used for a long time, do plug 

out the power plug. 

★ When cleaning the unit, 

cut off the power. 


damaged would occur. 

★ Don't plug out the power 

plug by pulling the wire. 

Or fire would occur by overheat 

of wire. 

★ • Don't blow the burning 

cooker directly. 

Otherwise CO toxicosis may 

occur for imcomplete burning. 

★ Keep chemical sprayer 1m 

or more away from indoor and 

outdoor unit. Otherwise fire 

or explosion may occur. 

Gas 

★ Check if the chassis of 

outdoor unit is damaged. 

If chassis is broken without 

repair, unit may fall and cause 

injury. 

★ Don't stand or put something 

on the outdoor unit. 

Man or things may fall from 

the unit and cause indury. 

★ Don't block the air intake or 

outlet vent of indoor and outdoor 

unit. It can decrease the working 

capacity or even stop the unit.


Indoor temperature should be set properly 

Proper set temp. can save electricity. 

Temp. dif of 

indoor and outdoors 

should be 5 

NOTICE 

● Adjust airflow and direction properly 

When the unit is running, adjust up and down adjusting 

louver by wireless remote control can adjust vertical 

direction of air, hold the adjust louver that control left 

and rignt direction can adjust horizontal flow direction 

of air. 

Left and right adjust louver 

Up and down adjust louver 

When the unit is running, don't open windows 

or doors of the room for long time. 

It would lower performance of the unit. 

● Don't blow pets or plants directly for it is not 

good for them. 

Don't pour water on the unit or wash it by 

water for malfunction or electric shock may 

occur. 

Power hose of this unit adopts Y type connection, 

don't cut off or damage it and signal control wire. 

If the supply cord is damaged, it must be replaced 

by the manufacturer, its service agent or similarly 

qualified persons in order to avoid a hazard. 

The unit allow voltage fluctuation of 220- 

240 V, too low of voltage may increase 

libration of compressor that cause damage 

on cool system. 

This unit cannot be used to dry clothes or refrigerate 

and store foods etc.. 

50Hz~220-240V 

4


Usage of Wireless Remote Control 

Names and Functions of Wireless Remote Control 

Note: Make sure that there is no obstruction between the control and receive 

window. 

Don't drop or throw the wireless remote control. 

Don't let any liquid flow into the control, or put it to where suffer direct 

sunburn or where is very hot. 

MODE 

Press MODE serially to 

change running mode 

by following order: 

Auto 

FAN 

Every press to this button, 

fan speed changes by 

following order: 

Auto 

Note: Under mode, 

fan speed cannot be 

adjusted. 

SWING 

Guide louver begins 

swing on certain angle 

when SWING is pressed 

once. Repress it to stop. 

TEMPERATURE 

Every press of +℃ set 

temp. increase 1℃; press 

-℃ once and set temp. 

lower 1℃. 

Under 

indoor temp. can be 

adjusted between 

16℃~30℃. 

“ ”means cooling 

“ ”means drying 

“ ”means fan 

“ ”means heating 

ON/OFF 

The unit begins running 

when this button is pressed. 

Repress it for stop. 

6


◆ 

Names and Functions of Wireless Remote Control 

Note: This wireless remote control is of general type that can be used by 

many kinds (functions) of unit. Please understand that we won't 

introduce the button that is unavailable here. 

Liquid Crystal Displayer 

Display signals of all selected 

buttons. 

SLEEP 

Press once to begin sleep 

mode, and repress to exit. 

Note: "Auto" and " "mode 

has no SLEEP mode. 

TIMER ON 

Press TIMER ON when unit 

is off, auto on time can be 

set in 0~24 hours. 

0 24h 

CANCEL 

TIMER OFF 

Press TIMER OFF when unit 

is running, auto off time can 

be set in 0~24 hours. 

0 24h 

CANCEL 

7


◆ Operation Guideline 

General process: 

1. After connecting with power, buzzer sounds in music and unit be in running state. 

(Note: Every electrify or receiving wireless remote control signal, buzzer sounds in music.) 

2. Press ON/OFF on wireless remote control, then run indicator light and relevant 

indicator light on, set temperature by fan speed, and unit begins to run. 

3. Press MODE to select needed operation mode. 

4. Press FAN to set fan speed. 

5. Press SWING then guide louver swings automatically; repress to stop swinging. 

6. Press +℃ or -℃ to set proper temperature. 

Selectable process: 

7. Press SLEEP to set sleep state. 

8. Press TIMER ON or TIMER OFF to set auto on or off time. 

Note: When AUTO mode is selected, unit would select proper operation mode 

according to indoor ambient to make environment comfort. 

◆ Change Batteries of Wireless Remote Control 

The wireless remote control adopts 2 No.7 dry alkaline cells. 

1. Slide the cell cover downward to take out the worn cells, then change 2 new 

ones (note to the correct polarity). 

2.Cover the cell cover. 

Note: 

● Don't confuse the new and worn or 

batteries of different types. 

● If the wireless remote control would not be 

used for weeks, please take out batteries to 

prevent liquid leakage from damaging it. 

● The operation of wireless remote control 

should within its receivable distance. 

● The distance between wireless remote 

control and both TV or Hi-fi etc. should be 

above 1m. 

8

Installation 

◆ Installation Notice 

Select of Install Location 

Indoor Unit 

1. The air intake and outlet vent should be far away from obstruction to ensure 

the air is blowed to the entire room. 

2. Select place where is easy to drain condensate or connect with outdoor unit. 

3. Far away from heat resource, steam and flammable gas. 

4. Select place where can stand the weight of indoor unit without increasing 

running noise and librations. 

5. Ensure there is enough space for maintenance, and height of indoor unit 

to floor should be at least 2.3m. 

6. Place where is at least 1m away from TV, Hi-fi and other appliances. 

7. Select place where air filter can be taken out easily. 

8. Ensure the install of indoor unit fits requirements on Install Dimension 

Diagram. 

9.Do not use the unit in the immediate surroundings of a laundry a bath a shower 

or a swimming pool. 

10.The plug should be accessible after the appliance is positioned. 

Outdoor Unit 

1. Select place where noise and airflow produced when exharsting will not annoy 

neighbours. 

2. Ensure well ventilation of outdoor unit. 

3. There should be no obstruction that may impact air in and out near outdoor unit. 

4. Install place should be able to stand weight and libration of outdoor unit and ensure 

safe operation of the outdoor unit. 

5. Select place where there is no leakage of flammable or corrosible gas. 

6. Ensure the install of outdoor unit fits requirements on Install Dimension Diagram. 

9

Installation 

Wiring Collocation 

1. Power must adopt rated voltage and special circuit for air conditioner, diameter 

of the power cord should be big enough. 

2. Please don't pull power wire forcibly. 

3. Earthing should be reliable, and it should be connected on special earthing settings 

of the building. Do have them connected by professional personnel. Electric leakage 

protect switch and air switch with enough capacitance must be set in rated circuit 

(Refer to the following form). Air switch should includes magnetic and heat drop-out 

functions to ensure protect when curcuit short or overload occurs. 

Use Models 

Capacitance 

of air switch 

Min section 

of earth wire 

Min section 

of unit power cord 

GWHD09B2NK3AB 

10A 

1.0mm 2 

1.0mm 2 

GWHD12B2NK3AB 

15A 

1.5mm 2 

1.5mm 2 

Earthing Requirements 

1. Air conditioner is type I appliance, please do conduct reliable earthing measure. 

2. The yellow-green wire in the unit is earth wire, don't use it for other purpose or 

cut it. Don't fix it by self tapping screw, or electric shock may occur. 

3. Earth resistance should meet requirements on national standard GB17790. 

4.User power supply should offer reliable earth terminal. Don't connect earth wire to 

following places: 

1 Water pipe 2 Gas pipe 3 Drainage pipe 4 Other places where professional 

personnel considers unreliable. 

10

Installation 

Install Dimension Diagram 

15cm 

or 

more 

Distance to ceiling 

15cm 

or more 

Distance to wall 


15cm 

or more 

300cm 

or more 

Exhaust side 

230cm 

or Distance to floor 

more 

Important Advance 

★ To ensure better usage, please have the installation done by 

professional personnel by following this manual. 

★ Please contact the local service center before installation. Malfunction 

caused by installation by unauthorized unit may be hard to solve for 

inconvenient business contact. 

★ When moving the units, it is better to be guided by professional personnel. 

50cm 

or 

more 

Distance to shelter 

Air in side 

30cm 

or more 


30cm 

or more 

50cm 

or more 


200cm 

or 

more Exhaust 

side 

11

Installation 

◆ Installation of Indoor Unit 

☆• Install the Rear Panel 

1. Measure horizon by hanging line or 

horizontal measurement. Since drainage 

hole is at left side, it is better to adjust left 

side little lower. 

Fig. 1 

2. Fix rear panel on wall by bolts. 

3. Pull the panel by hand after installation to see if it is firm enough. The rear panel 

should be able to stand the weight of an adult (60kg). And the weight should be 

evenly shared each screw. 

☆ Install the Piping Hole 

1. After determined pipe hole location as fig.1, drill a hole (φ90) slant downward. 

2. In order to protect pipe and cable from damaging when going though wall, put on 

wall pipe. 

☆ Install the Drainage Hose 

1. For well draining, the drainage hose shoule be 

placed at a downward slant. 

Wrench 

Bend 

2. Do not wrench, bend or heave the drainage hose 

Don't flood it 

or flood its end in water. 

in water 

3. The prolonged drainage hose should be wrapped with insulation material 

when passing through indoor. 

☆ Install the Indoor Unit 

1. Refer fig.a for piping mode of indoor unit. When piping (wiring) at left side, cut 

off tailings from pipe left from chassis of host (as shown in fig.4(b)). 

(1) Cut off tailing 1 when only power cord is led; 

(2) Cut off tailing 1 and 2 when connect pipe and wire are led; 

Piping mode 1 is recommended. 

12

Installation 

2. After wrapped pipe and wire, pull them though the pipe hole (as shown in fig.5). 

3. Hang the mounting slot behind indoor unit on the pothook of the rear panel and 

move it to check if it is firm enough (as shown in fig.6). 

4.Ensure the install height of indoor unit is 2m or higher. 

1 Left piping 

(a) 

2 Rear left piping 

Wrap strap 

Connect pipe 

Tailing 2 

Tailing 1 

Fig. 5 

Drainage host 

(b) 

Fig. 4 

Fig. 6 

13

Installation 

☆ Electric wiring 

1. Open the panel upwards; 

2. Disassemble the fixing bolts of wiring cover, 

as shown in right figure; 

3. Lead power connect cord though rear of 

button case from down to up; 

terminal, yellow-green wire (i.e. earth wire) onto " 

electric box. 

Power connect cord of 

indoor and outdoor unit 

4. Connect blue wire in power connect wire onto "N(1)" terminal, brown wire onto "2" 

" terminal (as shownin fig.3); 

and press the power connect cord by wire clamp that in front of line bank on 

5. To heat pump type unit, signal control cord connect with indoor unit through connector 

as (shown in fig.3), and tighten the control cord by clamp on bottom of case. 

6. Install the cover plate on its original and tighten screws. 

Wiring cover 

Line bank 

Brown 

Wire 

clamp 

Power connect cord 

Fig. 3 

14

Install the outdoor unit 

Install of quick connector 

1. Screw out bolt that pointed out by arrowhead. 

Bolt 

2. Press big handle downward to take it off. 

3. Open the tightening plate of quick 

connector. (male) 

Orientating pin 

Tightening plate 

4. Pull tightening sleeve inward by the 

direction pointed by arrowhead. 

Tightening sleeve 

5. Insert the quick connector (male) into the other quick connector 

(female) to the end forcibly and reposit tightening sleeve simultaneity. 

Note: Orientating pin is downward. 

15

6. Rotate tightening plate and press it to bottom. 

Note: The tightening plate cannot be 

pressed to right position if the 

tightening sleeve is not rep 

sited completely. 

Tightening plate 

7. Connect with wiring terminal, 

install wire clamp and press 

the connecting wire tight. 

and the wiring connect on the terminal board, 

Wire clamp 

Connection terminal 

8. Install big handle 

Electric heating belt 

When outdoor ambient sensor malfunction happened, 

both of the electric heating belts stop working, otherwise, 

it will run at the following control:When Toutdoor ambient 

5 and the compressor doesn't started, that the 

compressor electric heating belt starts to work; Otherwise 

if compressor started or compressor doesn't start but 

Toutdoor ambient2 , the electric heating belt 

will not work. Compressor doesn't start and 5 

Toutdoor ambient 2compressor electric heating 

belt keeps the original state. When Toutdoor ambient 

3, the condenser electric heating belt work; Otherwise, 

if Toutdoor ambient6 , the condenser electric heating 

belt will not work. 3Toutdoor ambient6, the condenser 

electric heating belt will keep the original state. 

Electric heating belt 

16

Installation 

☆ Drainage of Condensate of Outdoor Unit 

When unit is heating, condensate 

produced by outdoor unit and defrost 

water when defrosting would be drained 

to proper place by drainage hose. 

Install method: Insert outdoor drainage 

joint into hole Ø25 at chassis, then connect 

the hose onto drainage nozzle can drain 

condensate and defrost water to proper 

place. 

Base plate of 

outdoor unit 

Outdoor drainage joint 

Fig. 10 

◆ Trial Run and Check Items after Installation 

☆ Trial Run 

1. Preparation for Trial Run 

(1) Don't turn on power supply if entire 

installations are not completed. 

(2) Connect of control circuit should be 

correct, all wire connect should be firm. Heat indicator ON/OFF button 

(3) All scattered components, especially metal 

Run indicator 

scrap thrum etc. should be cleared from unit. Cool/dry indicator 

2. Trial Run Method 

(1) Press ON/OFF on wireless remote control after connecting to power then unit 

begins running. 

(2) Press MODE to select run mode of COOL, HEAT and FAN etc. to check if 

can run normally. 

(3) When wireless remote control is lost, operation unit by following mode: 

(a) When unit is off, press the ON/OFF button, then unit begins to run in AUTO, 

micro-computer selects COOL, HEAT or FAN automatically according to indoor 

temp. to make comfort effect. Repress ON/OFF to stop the unit from running. 

(b) When unit is running, press ON/OFF to stop unit from running. 

17

Installation 

☆ Check after Installation 

Items to be checked 

Is the installation firm enough? 

Is leakage test done? 

Is heat insulation sufficient? 

Is drainage smooth? 

Is the power voltage the same with that in 

product nameplate? 

Is the install of circuit and pipeline correct? 

Possible malfunction 

Unit may drop, shake or emit noise 

It may cause insufficient of cooling 

(heating) capacity 

Condensation or water drop may occur 

Condensation or water drop may occur 

Malfunction or burn out of parts may occur 

Malfunction or burn out of parts may occur 

Is the unit earthed safely? 

Electric leakage may occur 

Is model of wire fit that of regulation? Malfunction or burn out of parts may occur 

Is both the air intake or outlet vent of both It may cause insufficient of cooling 

indoor and outdoor unit blocked? (heating) capacity 

18

Maintenance 

◆ 

Warning 

Maintenance 

▲Turn off the unit and pull out the power plug before cleaning the unit, otherwise 

electric shock may occur. 

▲Do not make the unit wet, or electric shock may occur. Ensure that the unit 

would not be washed by water under any circumstance. 

▲Volatile liquid like thinner or gasoline would damage the appearance of the unit 

(only adopts soft dry cloth and wet cloth moisted with neuture cleaning fluid to 

clean appearance of the unit). 

Disassemble and wash of filter 

1. Lift the panel by hand according to arrow direction; 

2. Pull down panel by arrow direction; 

3. Uplift the panel a little by arrow direction 1, then take 

out filter by arrow direction 2. Adopt cleaner or water 

to wash filter, if the filter is too dirty (like oil spot), wash 

it by warm water (lower than 45℃) melted with neutral 

cleaning fluid then dry it in shade. 

Installation of filter 

1. Uplift the panel a little by arrow direction 1, then insert 

the filter from nether of the panel by arrow direction 2. 

2. Uplift the panel by arrow direction to the location shown 

as figure. 

3. Insert the clamp A, B and C to the 3 rotating shaft by 

arrow direction and cover panel. 

19

Maintenance 

Check before use 

1. Check if air intake or outlet vent of both 

indoor or outdoor unit is blocked. 

2. Check if earth wire is earthed firmly. 

3. Check if batteries in wireless remote 

control is changed. 

4. Check if install supporter of outdoor unit is 

damaged, if so, contact our service center. 

1. Clean filter and the body of indoor and 

outdoor unit. 

2. Cut off power supply of the unit. 

3. Clear dust and things on outdoor unit. 

4. If outdoor unit rusts, paint oil paint on 

rust to prevent its spreading. 

Maintenance after use 

◆ 

When Unit Cannot Work Normally 

Warning: Please don't repair the unit by yourself for incorrect repair would cause electric 

shock or fire; please contact our service center to have the unit repaired by 

professional personnel. Check the following items before requesting on service 

center would saves your time and cost. 

Phenomenon 

When unit is restarted immediately after being 

turned off, compressor cannot work. 

Waiting 

Troubleshooting 

When unit is restarted immediately after being turned 

off, unit protect setting would make it run after a delay 

of 3 minutes. 

Odor comes out from the unit when it is just 

turned on. 

This is caused by the odor from furniture or cigarette 

that was sucked in the unit but now be blown from it 

when the unit is conditioning. 

20

Maintenance 

Phenomenon 

Water flowing sound is heard when unit is running. 

Troubleshooting 

This is the sound of flowing of refrigerant inside the 

unit. 

When cooling, mist comes from air outlet vent 

vent sometimes. 

This is because the indoor air is cooled rapidly. 

Slight creaking noise can be heard when the unit 

turned on or off. 

This is the frictional sound caused by expansion of 

panel since the change of temperature. 

Unit cannot run. 

Trip 

· Is power supply cut off? 

· Is power cord loosen? 

· Is circuit protector tripped? 

· Is voltage higher than 253V or lower than 195V? 

· Is Timer On set by wireless remote control? 

Bad cooling (heating) effect. 

Wireless remote control cannot control. 

· Is temperature set in proper? 

· Is intake or outlet vent of outdoor unit blocked? 

· Is there too much dust on air filter? 

· Are windows and doors closed? 

· Is airflow set to Low? 

· Is there any heat source in room? 

·The unit is interfered by abnormal interference or 

changing function too frequently, wireless remote 

control cannot control occationally. Plug out power 

plug and reinsert it well could resume normal 

operation. 

·Is the control in the receiving area? or is there 

obstruction? 

·Check if the voltage of batteries in the control is 

enough. if not, change batteries. 

21

Maintenance 

Stop the unit from running immediately and take 

out power plug when following circumstance occur, 

then contact our service center. 

Please contact our 

Service Center if there 

is any problem. 

▲ Harsh noise is heard when the unit is running; 

▲ Fuse and protector always trip; 

▲ Water or other things is poured into unit or 

the wireless remote control; 

▲ Water leakage occured in room; 

▲ Power connecting wire and power cord is extremely hot; 

▲ Abnormal odor is produced when the unit is running. 

22

Maintenance 

Circuit Diagram 

GWHD09B2NK3AB GWHD12B2NK3AB 

Indoor Unit 

GWHD09B2NK3AB GWHD12B2NK3AB 

Outdoor Unit 

23

Ultra-thin Split Unit - Lomax

Create successful ePaper yourself

Delete template?

Save as template?