Pioneer CB009GMFILCFHD, RB009GMFILCFHD, FB009GMFILCFHD, CB012GMFILCFHD, RB012GMFILCFHD SERVICE MANUAL

LIGHT COMMERCIAL SPLIT SYSTEMS

3D DC INVERTER HEAT PUMP

SERVICE MANUAL

ALL RIGHTS RESERVED. PARKER DAVIS HVAC INTERNATIONAL, INC., DORAL, FL 33172 USA

Phone: [phone] www.highseer.com

RevisionA:1605,Contentupdated.

Table of Contents

1. Precaution

2. Part Names And Functions

3. Dimension

4. Service space

5. Refrigerant Cycle Diagram

6. Wiring Diagram

7. Static Pressure

8. Electric Characteristics

9. Sound Level

10. Accessories

11. The Specification of Power

12. Installation Details

13. Operation Characteristics

14. Electronic Function

15. Solar Panel

16. Troubleshooting

17. Disassembly Instructions

ModelNumbers:

IndoorUnitModelNumbers:

CeilingCassette  ConcealedDucted  Floor,Ceiling,LowWall

CB009GMFILCFHD  RB009GMFILCFHD FB009GMFILCFHD

CB012GMFILCFHD  RB012GMFILCFHD FB012GMFILCFHD

CB018GMFILCFHD  RB018GMFILCFHD UB018GMFILCFHD

CB024GMFILCFHD  RB024GMFILCFHD UB024GMFILCFHD

CB036GMFILCFHD  RB036GMFILCFHD UB036GMFILCFHD

CB048GMFILCFHD  RB048GMFILCFHD UB048GMFILCFHD



OutdoorUnit:

StandardCommunicationCircuitModels:

YN009GMFI22RPD  YN012GMFI22RPD  YN018GMFI22RPD

YN024GMFI22RPD  

RS‐485CommunicationCircuitModels:

YN036GMFI17RUD  YN038GMFI17RUD 



Single Zone

WARN ING

 Installation MUST conform with local building codes or, in the absence of local codes, with the National

Electrical Code NFPA70/ANSI C1-1993 or current edition and Canadian Electrical Code Part1 CSA

C.22.1.

 The information contained in the manual is intended for use by a qualified service technician familiar

with safety procedures and equipped with the proper tools and test instruments

 Installation or repairs made by unqualified persons can result in hazards to you and others.

 Failure to carefully read and follow all instructions in this manual can result in equipment malfunction,

property damage, personal injury and/or death.

 This service is only for service engineer to use.

CONTENTS

1. Precaution .................................................................................................................................................. 1

1.1 Safety Precaution ....................................................................................................................... 1

1.2 Warning ...................................................................................................................................... 1

2. Part Names and Features .......................................................................................................................... 4

2.1 Model Names of Indoor/Outdoor units ........................................................................................ 4

2.2 Part names of Indoor/Outdoor units ............................................................................................ 5

2.3 Features ..................................................................................................................................... 9

3. Dimension ................................................................................................................................................ 18

3.1 Indoor Unit ................................................................................................................................ 18

3.2 Outdoor Unit ............................................................................................................................. 23

4. Service Space .......................................................................................................................................... 24

4.1 Indoor Unit ................................................................................................................................ 24

4.2 Outdoor Unit ............................................................................................................................. 26

5. Refrigerant Cycle Diagram ...................................................................................................................... 27

6. Wiring Diagram ........................................................................................................................................ 28

6.1 Indoor Unit ................................................................................................................................ 28

6.2 Outdoor Unit ............................................................................................................................. 34

7. Fan Curves ............................................................................................................................................... 40

8 Electric Characteristics ............................................................................................................................ 47

9 Sound Level .............................................................................................................................................. 48

9.1 Indoor unit ................................................................................................................................ 48

9.2 Outdoor unit .............................................................................................................................. 51

10 Accessories ............................................................................................................................................ 52

11 The Specification of Power .................................................................................................................... 54

12 Installation Details .................................................................................................................................. 56

12.1 Location selection ............................................................................................................... 56

12.2 Indoor unit installation ......................................................................................................... 56

12.3 Outdoor unit installation ...................................................................................................... 61

12.4 Refrigerant pipe installation ................................................................................................ 62

12.5 Drainage pipe installation .................................................................................................... 66

12.6 Vacuum Drying and Leakage Checking .............................................................................. 69

12.7 Additional refrigerant charge ............................................................................................... 70

12.8 Engineering of insulation ..................................................................................................... 71

12.9 Engineering of electrical wiring ........................................................................................... 72

12.10 Test operation .................................................................................................................. 72

13. Operation Characteristics ..................................................................................................................... 74

14. Electronic Function ............................................................................................................................... 75

14.1 Abbreviation ............................................................................................................................ 75

14.2 Display function ...................................................................................................................... 75

14.3 Main Protection ....................................................................................................................... 75

14.4 Operation Modes and Functions............................................................................................. 76

16. Troubleshooting .................................................................................................................................... 82

16.1 Indoor Unit Error Display ........................................................................................................ 83

16.2 Outdoor unit error display ....................................................................................................... 84

For 9K-24K outdoor unit: ................................................................................................................ 84

For 36K-48K Outdoor Unit .............................................................................................................. 85

Outdoor check function ................................................................................................................... 86

16.3 Diagnosis and Solution ........................................................................................................... 88

16.4 Main parts check .................................................................................................................. 102

17. Disassembly Instructions ................................................................................................................... 109

17.1 Indoor unit ............................................................................................................................ 109

17.2 Outdoor unit .......................................................................................................................... 126



1. Precaution

1.1 Safety Precaution

 To prevent injury to the user or other

people and property damage, the following

instructions must be followed.

 Incorrect operation due to ignoring

instruction will cause harm or damage.

 Before service the unit, be sure to

read this service manual at first.

1.2 Warning

 Installation

 Do not use a defective or underrated

circuit breaker. Use this appliance on a

dedicated circuit.

There is risk of fire or electric shock.

 For electrical work, contact the dealer,

seller, a qualified electrician, or an

authorized service center.

Do not disassemble or repair the product,

there is risk of fire or electric shock.

 Always ground the product.

There is risk of fire or electric shock.

 Install the panel and the cover of

control box securely.

There is risk of fire of electric shock.

 Always install a dedicated circuit and

breaker.

Improper wiring or installation may cause
electric shock.

 Use the correctly rated breaker of

fuse.

There is risk of fire or electric shock.

 Do not modify or extend the power

cable.

There is risk of fire or electric shock.

 Do not install, remove, or reinstall the

unit by yourself (customer).

There is risk of fire, electric shock, explosion,

or injury.

 Be caution when unpacking and

installing the product.

Sharp edges could cause injury, be especially

careful of the case edges and the fins on the
condenser and evaporator.

 For installation, always contact the

dealer or an authorized service center.

 Do not install the product on a

defective installation stand.

 Be sure the installation area does not

deteriorate with age.

If the base collapses, the air conditioner could
fall with it, causing property damage, product

failure, and personal injury.

 Do not let the air conditioner run for a

long time when the humidity is very high

and a door or a window is left open.

 Take care to ensure that power cable

could not be pulled out or damaged during

operation.

There is risk of fire or electric shock.

 Do not place anything on the power

cable.

There is risk of fire or electric shock.

 Do not plug or unplug the power

supply plug during operation.

There is risk of fire or electric shock.

 Do not touch (operation) the product

with wet hands.

 Do not place a heater or other

appliance near the power cable.

There is risk of fire and electric shock.

 Do not allow water to run into

electrical parts.

It may cause fire, failure of the product, or
electric shock.

 Do not store or use flammable gas or

combustible near the product.

There is risk of fire or failure of product.

 Do not use the product in a tightly

closed space for a long time.

Oxygen deficiency could occur.

 When flammable gas leaks, turn off

the gas and open a window for ventilation

before turn the product on.

1

 If strange sounds or smoke comes

from product, turn the breaker off or

disconnect the power supply cable.

There is risk of electric shock or fire.

 Stop operation and close the window

in storm or hurricane. If possible, remove

the product from the window before the

hurricane arrives.

There is risk of property damage, failure of
product, or electric shock.

 Do not open the inlet grill of the

product during operation. (Do not touch the

electrostatic filter, if the unit is so equipped.)

There is risk of physical injury, electric shock,
or product failure.

 When the product is soaked, contact

an authorized service center.

There is risk of fire or electric shock.

 Be caution that water could not enter

the product.

There is risk of fire, electric shock, or product

damage.

 Ventilate the product from time to

time when operating it together with a stove

etc.

There is risk of fire or electric shock.

 Turn the main power off when

cleaning or maintaining the product.

There is risk of electric shock.

 When the product is not be used for a

long time, disconnect the power supply plug

or turn off the breaker.

There is risk of product damage or failure, or

unintended operation.

 Take care to ensure that nobody

could step on or fall onto the outdoor unit.

This could result in personal injury and

product damage.

 CAUTION

 Always check for gas (refrigerant)

leakage after installation or repair of

product.

Low refrigerant levels may cause failure of

product.

 Install the drain hose to ensure that

water is drained away properly.

A bad connection may cause water leakage.

 Keep level even when installing the

product.

It can avoid vibration of water leakage.

 Do not install the product where the

noise or hot air from the outdoor unit could

damage the neighborhoods.

It may cause a problem for your neighbors.

 Use two or more people to lift and

transport the product.

 Do not install the product where it will

be exposed to sea wind (salt spray) directly.

It may cause corrosion on the product.

Corrosion, particularly on the condenser and

evaporator fins, could cause product
malfunction or inefficient operation.

 Operational

 Do not expose the skin directly to

cool air for long time. (Do not sit in the

draft).

 Do not use the product for special

purposes, such as preserving foods, works

of art etc. It is a consumer air conditioner,

not a precision refrigerant system.

There is risk of damage or loss of property.

 Do not block the inlet or outlet of air

flow.

 Use a soft cloth to clean. Do not use

harsh detergents, solvents, etc.

There is risk of fire, electric shock, or damage

to the plastic parts of the product.

 Do not touch the metal parts of the

product when removing the air filter. They

are very sharp.

 Do not step on or put anything on the

product. (outdoor units)

 Always insert the filter securely.

Clean the filter every two weeks or more

often if necessary.

A dirty filter reduces the efficiency of the air
conditioner and could cause product

malfunction or damage.

2

 Do not insert hands or other objects

through air inlet or outlet while the product

is operated.

 Do not drink the water drained from

the product.

 Use a firm stool or ladder when

cleaning or maintaining the product.

Be careful and avoid personal injury.

 Replace the all batteries in the remote

control with new ones of the same type. Do

not mix old and new batteries or different

types of batteries.

There is risk of fire or explosion.

 Do not recharge or disassemble the

batteries. Do not dispose of batteries in a

fire.

They may burn of explode.

 If the liquid from the batteries gets

onto your skin or clothes, wash it well with

clean water. Do not use the remote of the

batteries have leaked.

3

2. Part Names and Features

2.1 Model Names of Indoor/Outdoor units

Series Capacity Indoor units

Outdoor units

Cassette

Duct

Console

Cassette

Duct

Console

Cassette

Duct

Floor Ceiling

Cassette

Duct

Floor Ceiling

Cassette

9K

12K

18K

24K

CB009GMFILCFHD

RB009GMFILCFHD

FB009GMFILCFHD

CB012GMFILCFHD

RB012GMFILCFHD

FB012GMFILCFHD

CB018GMFILCFHD

RB018GMFILCFHD

UB018GMFILCFHD

CB024GMFILCFHD

RB024GMFILCFHD

UB024GMFILCFHD

CB036GMFILCFHD

YN009GMFI22RPD

YN012GMFI22RPD

YN018GMFI22RPD

YN024GMFI22RPD

Duct

Floor Ceiling

Cassette

Duct

Floor Ceiling

36K

48K

RB036GMFILCFHD

UB036GMFILCFHD

CB048GMFILCFHD

RB048GMFILCFHD

UB048GMFILCFHD

YN036GMFI17RUD

YN048GMFI17RUD

4

2.2 Part names of Indoor/Outdoor units

Ceiling Cassette Unit

5

Ducted Concealed Units

6

Floor Console Units

7

Ceiling-Floor Units

8

2.3 Features

2.3.1 Duct Units

2.3.1.1 Installation accessories: (Field Supplied / Optional)

 Front Board, Canvas Air Passage, Filter, Panel, for easy installation

2.3.1.2 Easy Installation: Two air inlet styles (Bottom side or Rear side)

 Air inlet from rear is standard for all capacity; air inlet from bottom is optional.

 The size of air inlet frame from rear and bottom is same, it’s very easy to move the cover from

bottom to rear side, or from rear to the bottom, in order to matching the installation condition.

Panel

Air intake from rear (Standard)

2.3.1.3 Fresh air intake function

 Install one duct from the reserved fresh-air intake to outdoor.

Continually inhale the fresh air to improve the quality of the indoor air, fulfills air quality more

healthy and comfortable.

9

Air intake from bottom (Optional)

2.3.1.4 Easy maintenance

 Clean the filter (Optional, standard product without filter)

It is easy to draw out the filter from the indoor unit for cleaning, even the filter is installed in rear

side or bottom side.

 Replace the motor or centrifugal fan

Remove the ventilated panel firstly. Remove a half of blower housing and take out the motor with
centrifugal fan. Directly remove two bolts, and then replace the motor or centrifugal fan easily.

Motor

Blower Housing

Ventilated Panel

2.3.1.5 Reserved remote on-off and central control ports

 Reserved remote on-off ports and central control ports, can connect the cable of an on-off

controller or a central controller to realize remote on-off control function or group control function.

Remote on-off ports Central control ports

2.3.1.6 Built-in drain pump (Optional):

 Built-in drain pump can lift the water to 750mm upmost. It’s convenient to install drainage piping

under most space condition.

10

2.3.2.7 Build-in Drain Pump with float switch

 The drain pump can lift the condensing water up to 750mm upmost.
 It’s convenient to install drainage piping under most space condition.

750mm upmost

2.3.1.8 Built-in display board

 The standard indoor unit can be controlled by wired controller.

 There is a display board with a receiver in the E-box. Move out the display, and fix it in other place,

even in the distance of 10m. The unit will realized remoter control.

 The wired controller and the display board can display the error code or production code when the

chips detect some failure.

Wired Controller (Standard)

Remote Controller (Optional)

Display

11

2.3.2 Cassette Unit

2.3.2.1 Lower Noise

 Optimize air channel system design to ensure the maximum quietness and comfort.

 Noise max down 6dB.

2.3.2.2 Turbo mode (Optional)

 Turbo function can boost cooling or heating speed in a short period, and makes the room cool

down or heat up rapidly.

2.3.2.3 Fire-proof controller box

 Electrical control box adopts new design, which can meet higher fire safety requirements.

Old

Common vs. Turbo

Cold

Turbo Mode (After 30 min)

New

Hot

New

2.3.2.4 Fresh Air

 Fresh air intake function bring you fresh and comfortable air feeling.

2.3.2.5 Wired controller (Optional)

 Compared with infrared remote controller, wired controller can be fixed on the wall and avoid

mislaying. It's mainly used for commercial zone and makes air conditioner control more

convenient.

12

Old

2.3.2.6 Build-in Drain Pump

 The drain pump can lift the condensing water up to 750mm upmost.

 It’s convenient to install drainage piping under most space condition.

2.3.2.7Terminals for alarm lamp and long-distance on-off controller connection are standard

 Reserve terminals for the connection of alarm lamp and long-distance on-off controller, more

human control.

13

2.3.3 Console

2.3.3.1. Modern and elegant appearance

 The simple and stylish designs can nicely harmonies with your living space.

3.2.3.2. Four panels optional

2.3.3.3. Two air-outlet ways

Cooling mode

Quick Cooling To maintain room temp

 Air outlet from top and bottom to make quick cooling ------When the A/C is just switched on, or

room temp. is still high, cold air will be blown out from top and bottom air outlet to cool down the
room quickly

 Air outlet from top to maintain room temp. ----When the room has been cooled down, or the A/C

has been opened over 1 hour, cold air only from the top outlet to keep constant room temp

14

Heating mode

 Anti-cold air ------When the AC is just turn on, temperature of evaporator is very low, in this case,

in order to prevent cold air direct blowing, only the upper louver is opened in a high position, the

lower louver closed.

2.3.3.4. Four air inlets

2.3.3.5. Low noise

 DC indoor fan motor, which has five speeds.

 Low noise and energy saving.

 Advanced centrifugal fan technology makes a fast airflow and reduces the indoor noise.

2.3.3.6. Golden fin is optional.

2.3.3.7. Active carbon filter is standard

15

2.3.1 Ceiling-floor Units

2.3.1.1 Two-way installation

 The rounded design of the ceiling and floor type air conditioner allows either ceiling or floor-level

installation. Ceiling installation saves room space, while floor installation helps prevent the loss of warm

air.

2.3.1.2 Brief design

 Brief design that is suitable for any interior will not only give you cooling and heating performance but

also upgrade your lifestyle.

2.3.1.3 3D airflow

Vertical air flow and horizontal airflow can be adjusted by remote controller, the cooperation of the two airflow

ways help to spread air comfortably throughout even a large room. With these functions, the whole room can be

evenly air-conditioned for both floor-level and ceiling installation.

16

2.3.1.4 Optional drainage pipe connection

 Both right side and left side drainage holes are available to avoid the space limitation for drainage pipe

installation. Make you more convenient during installation.

C Panel (LED display) D Panel

2.3.1.5 Convenience operating and easy maintenance

 Remote controller as standard, wired controller for optional.

 The filter without screw fixed, can be took out easily.

2.3.1.6 Easy installation, save working time

 The pipes can be connected from bottom, back and right side, makes the installation more easily.

 The wiring works can be finished before installation.

2.3.1.7 Outside water pump for optional when ceiling installation.

17

3. Dimension

3.1 Indoor Unit

Duct Units

Air filter ( optional )

air inlet from rear side

J

I

Test mouth & Test cover

25 Drain connecting pipe
( for pump )

Capacity (KBtu)

mm

9

12

18

24

36

48

in

mm

in

mm

in

mm

in

mm

in

mm

in

B

Fresh air intake

D

C

W2

H2

H1

W1

4-install hanger

25 Drain pipe

Air filter ( optional )

L

A

M

G

H

K

FE

air inlet from bottom side

Liquid side

Gas side

25 Drain pipe

Electric control box

Outline dimension(mm) Air outlet opening size Air return opening size

A B C D E F G H I J K L M H1 H2 W1 W2

700 210 635 570 65 493 35 119 595 200 80 740 350 120 143 95 150

27.56 8.27 25 22.44 2.56 19.41 1.38 4.69 23.43 7.87 3.15 29.13 13.78 4.72 5.63 3.74 5.91

700 210 635 570 65 493 35 119 595 200 80 740 350 120 143 95 150

27.56 8.27 25 22.44 2.56 19.41 1.38 4.69 23.43 7.87 3.15 29.13 13.78 4.72 5.63 3.74 5.91

920 210 635 570 65 713 35 119 815 200 80 960 350 120 143 95 150

36.22 8.27 25.00 22.44 2.56 28.07 1.38 4.69 32.09 7.87 3.15 37.80 13.78 4.72 5.63 3.74 5.91

920 270 635 570 65 713 35 179 815 260 20 960 350 120 143 95 150

36.22 10.63 25.00 22.44 2.56 28.07 1.38 7.05 32.09 10.24 0.78 37.80 13.78 4.72 5.63 3.74 5.91

1140 270 775 710 65 933 35 179 1035 260 20 1180 490 120 143 95 150

44.88 10.63 30.51 27.95 2.56 36.73 1.38 7.05 40.75 10.24 0.78 46.46 19.29 4.72 5.63 3.74 5.91

1200 300 865 800 80 968 40 204 1094 288 45 1240 500 175 198 155 210

47.24 11.81 34.06 31.50 3.15 38.11 1.57 8.03 43.07 11.34 1.77 48.82 19.69 6.89 7.80 6.10 8.27

Size of install

hanger

Size of refrigerant pipe

18

Cassette Units (9K, 12K, 18K)

Liquid side

Gas side

Fresh air intake

65

Wiring connection port

Panel

570

Body

523

545

570

75

( for Service )

E-parts box

4-Screw hole
(for install panel)

4-install hanger

32

44

42

68

Drain hole

Drain pipe

157

126

Wiring connection port

260

647

19

Cassette Units (24K, 36K, 48K)

D

D

D

D

92

9292

92

A

A

B

4-install hanger

Gas side

Liquid side

E-parts box

Service hole for
draining pump

780

D

D

92 92

75

Fresh air intake

B

A

680

680

840

A

A

80

80

136

Body

780

B

840

32

Drain hole

126

91

90

Wiring connection port

135

B

196

C

92929292

132

D

Test mouth &

Test cover

A

A

D

92 92

92

92

Panel

950

950

55

Capacity (Btu/h)

24K

36K

48K

A B C D

mm 160 75 205 50

inch 6.30 2.95 8.07 1.97

mm 160 95 245 60

inch 6.30 3.74 9.65 2.36

mm 160 95 287 60

inch 6.30 3.74 11.30 2.36

20

Console Units

600

16 Drain pipe

700

210

Hanging arm

195

Unit: mm

21

Ceiling-floor Units (18K-48K)

2

-

0

4

Drain discharge port

120

Fresh air intake

94

Wiring connection port

2

-

3

3

120

A

204

140

Refrigerant pipe hole

B

C

D

Hanging arm

220

222

Capacity (Btu/h)

18K / 24K

36K

48K

A B C D

mm 1068 675 235 983

inch 42.05 26.57 9.25 38.70

mm 1285 675 235 1200

inch 50.59 26.57 9.25 47.24

mm 1650 675 235 1565

inch 64.96 26.57 9.25 61.61

22

3.2 Outdoor Unit

A

D

Note: The above drawing is only for reference. The appearance of your units may be different.

Model W D H W1 A B

YN009GMFI22RPD

YN012GMFI22RPD

YN018GMFI22RPD

YN024GMFI22RPD

YN036GMFI17RUD

YN048GMFI17RUD

mm

inch

mm

inch

mm

inch

mm

inch

mm

inch

770 300 555 840 487 298

30.3 11.8 21.9 33.1 19.2 11.7

800 333 554 870 514 340

31.5 13.1 21.8 34.3 20.2 13.4

845 363 702 914 540 350

33.3 14.3 27.6 36.0 21.3 13.8

946 410 810 1030 673 403

37.2 16.1 31.9 40.6 26.5 15.9

952 415 1333 1045 634 404

37.5 16.3 52.5 41.1 25.0 15.9

B

23

4. Service Space

4.1 Indoor Unit

Duct Units

Ensure enough space required for installation and maintenance.

200mm(7.87in) or more

All the indoor units reserve the hole to connect the fresh air pipe. The hole size as following

300mm(11.81in) or more

600mmx600mm/23.62inx23.62in

Check orifice

Cassette Units

Unit: mm

24

Console Unit

Ceiling-floor Units

25

4.2 Outdoor Unit

(Wall or obstacle)

Air inlet

More than 30cm

(11.81in)

Air inlet

Air outlet

More than 30cm(11.81in)

Maintain channel

More than 60cm

(23.62in)

More than 200cm(78.74in)

More than 60cm
(23.62in)

26

5. Refrigerant Cycle Diagram

INDOOR OUTDOOR

HEAT
EXCHANGE
(EVAPORATOR)

T2 Evaporator
temp. sensor
middle

T2B Evaporator
temp. sensor
outlet

T1 Room temp.
sensor

LIQUID SIDE

2-WAY VALVE

GAS SIDE

3-WAY VALVE

CAPILIARY TUBE

Compressor

Electronic
expansion valve

T4 Ambient
temp. sensor

4-WAY VALVE

T5 Discharge
temp. sensor

T3 Condenser
temp. sensor

COOLING

HEATING

HEAT
EXCHANGE
(CONDENSER)

27

6. Wiring Diagram

6.1 Indoor Unit

CB009GMFILCFHD, CB012GMFILCFHD, CB018GMFILCFHD，CB024GMFILCFHD

RB009GMFILCFHD, RB012GMFILCFHD, RB018GMFILCFHD，RB024GMFILCFHD

28

FB009GMFILCFHD, FB012GMFILCFHD

UB018GMFILCFHD

29

UB018GMFILCFHD

CB036GMFILCFHD，CB048GMFILCFHD

30

RB036GMFILCFHD，RB048GMFILCFHD

31

UB036GMFILCFHD

UB048GMFILCFHD

32

UB036GMFILCFHD, UB048GMFILCFHD

33

6.2 Outdoor Unit

YN009GMFI22RPD, YN012GMFI22RPD

34

YN018GMFI22RPD

35

YN024GMFI22RPD

36

YN036GMFI17RUD

37

YN048GMFI17RUD



38

Outdoor Controller Set of

For YN009GMFI22RPD, YN012GMFI22RPD:

For YN018GMFI22RPD:

39

For YN024GMFI22RPD, YN036GMFI17RUD

7. Fan Curves

ENC2

Model 0 1 2 3 4

Model≤12

Model

(K Btu/h)

Factory Setting

Model=18

18<Model≤24

24<Model≤60

0.02

(5)

0.04

(10)

0.04

(10)

0.08

(20)

√

0.04

(10)

0.10

(25)

0.10

(25)

0.14

(35)

0.08

(20)

0.14

(35)

0.16

(40)

0.20

(50)

0.12

(30)

0.18

(45)

0.22

(55)

0.26

(65)

0.16

(40)

0.22

(55)

0.28

(70)

0.32

(80)

Static Pressure

Range In. WG (Pa)

0-0.18

(0-45)

0-0.28

(0-70)

0-0.40

(0-100)

0-0.40

(0-100)

40

RB009GMFILCFHD

Code 0 Code 1

Code 2 Code 3

Code 4

41

RB012GMFILCFHD

Code 0 Code 1

Code 2 Code 3

Code 4

42

RB018GMFILCFHD

Code 0 Code 1

Code 2 Code 3

Code 4

43

RB024GMFILCFHD

Code 0 Code 1

Code 2 Code 3

Code 4

44

RB036GMFILCFHD

Code 0 Code 1

Code 2 Code 3

Code 4

45

RB048GMFILCFHD

Code 0 Code 1

Code 2 Code 3

Code 4

46

8 Electric Characteristics

Model

CB009GMFILCFHD

RB009GMFILCFHD

FB009GMFILCFHD

CB012GMFILCFHD

RB012GMFILCFHD

FB012GMFILCFHD

CB018GMFILCFHD

RB018GMFILCFHD

UB018GMFILCFHD

CB024GMFILCFHD

RB024GMFILCFHD

UB024GMFILCFHD

CB036GMFILCFHD

RB036GMFILCFHD

UB036GMFILCFHD

CB048GMFILCFHD

RB048GMFILCFHD

UB048GMFILCFHD

Indoor Unit

Hz Voltage Min. Max.

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

60 208-230V 187V 253V

47

9 Sound Level

9.1 Indoor unit

Concealed Duct Type

Discharge

Suction

DuctDuct

1.4m

Microphone

Model

RB009GMFILCFHD 37 34 31

RB012GMFILCFHD

RB018GMFILCFHD 35 33 31

RB024GMFILCFHD 50 47 45

RB036GMFILCFHD

RB048GMFILCFHD 44 47 41

H M L

39 36 32

53 49 45

Noise level dB(A)

48

1.4m

Microphone

Model

CB009GMFILCFHD 41 39 37

CB012GMFILCFHD 41 38 35

CB018GMFILCFHD

CB024GMFILCFHD 51 47 43

CB036GMFILCFHD 52 47 44

CB048GMFILCFHD

H M L

46 43 41

53 49 45

Noise level dB(A)

49

Microphone

1m

1.5m

Model

FB009GMFILCFHD 45 41 35

FB012GMFILCFHD

H M L

44 42 38

Noise level dB(A)

Microphone

1m

Air outlet side

1m

1m

Microphone

1.5m

Model

UB018GMFILCFHD 47 44 38

UB024GMFILCFHD

UB036GMFILCFHD 55 48 41

UB048GMFILCFHD 57 54 52

H M L

53 49 45

Noise level dB(A)

50

9.2 Outdoor unit

Outdoor Unit

Microphone

H

1.0m

Note: H= 0.5 × height of outdoor unit

Model Noise Level dB(A)

YN009GMFI22RPD

YN012GMFI22RPD

YN018GMFI22RPD

YN024GMFI22RPD

YN036GMFI17RUD

YN048GMFI17RUD

56

57

59

61

65

63

51

10 Accessories

Duct Units

Name Shape Quantity

Tubing & Fittings

Drainpipe Fittings

(for cooling & heating)

Wired controller & Its Frame

Others

EMS & It’s fitting

Soundproof / insulation sheath

Binding tape

Seal sponge

Drain joint

Seal ring

Wired controller

，

s manual

Owner

Installation manual

Magnetic ring (twist the electric wires L

and N around it to five circles)

2

1

1

1

1

1

1

1

1

Cassette Units

Name Shape Quantity

Installation Fittings

Tubing & Fittings

Drainpipe Fittings

Remote controller & Its

Frame(The product you

have might not be

Installation paper board

Soundproof / insulation sheath

Out-let pipe sheath

Out-let pipe clasp

Drain joint

Seal ring

Remote controller & Its Frame

52

1

1

1

1

1

1

1

provided the following

accessories)

Remote controller holder

1

Mounting screw(ST2.9×10-C-H)

Remote controller manual

Alkaline dry batteries (AM4)

Owner's manual

Others

Installation manual

Installation accessory

(The product you have

might not be provided the

following accessories

Expansible hook

Installation hook

Orifice

Console Units

Name Shape Quantity

Installation fittings Hook

Remote controller

2

1

2

1

1

4

4

1

2

1

Remote controller & Its Frame

Others

Ceiling-floor Units

1. Remote controller

Remote controller & Its

holder

Others

2. Remote controller holder

3. Mounting screw (ST2.9×10-C-H)

4. Alkaline dry batteries (AM4)

5. Owner's manual

6. Installation manual

7. Remote controller manual

Frame

Mounting screw(ST2.9×10-C-H)

Alkaline dry batteries (AM4)
Installation manual / 1
Owner's manual / 1

1

2

2

1

1

2

2

1

1

1

53

11 The Specification of Power

9K-18K

Type

Power

Circuit Breaker/ Fuse (A) 25/20 40/30

Indoor Unit Power Wiring (mm2)

Indoor/Outdoor

Connecting

Wiring

Phase 1-phase 1-phase

Frequency and Voltage 208-230V, 60Hz 208-230V, 60Hz

Ground Wiring 2.5 2.0

Outdoor Unit Power Wiring 3×2.5 3×2.0

High Voltage Signal 4×1.0 4×1.5

Low Voltage Signal

Model 36K 48K

Power

Circuit Breaker/ Fuse (A) 60/40 70/55

Indoor Unit Power Wiring (mm2)

Indoor/Outdoor

Connecting Wiring

Phase 1-phase 1-phase

Frequency and Voltage 208-230V, 60Hz 208-230V, 60Hz

Ground Wiring 4.0 4.0

Outdoor Unit Power Wiring 3×4.0 3×4.0

High Voltage Signal 3×1.5 3×1.5

Low Voltage Signal 3×0.5 3×0.5

24K

54

12 Field Wiring

36,000 and 48,000 BTU Models

55

12 Installation Details

12.1 Location selection

12.1.1 Indoor unit location selection

 The place shall easily support the indoor

unit’s weight.

 The place can ensure the indoor unit

installation and inspection.

 The place can ensure the indoor unit

horizontally installed.

 The place shall allow easy water drainage.
 The place shall easily connect with the

outdoor unit.

 The place where air circulation in the room

should be good.

 There should not be any heat source or

steam near the unit.

 There should not be any oil gas near the unit
 There should not be any corrosive gas near

the unit

 There should not be any salty air neat the

unit

 There should not be strong electromagnetic

wave near the unit

 There should not be inflammable materials

or gas near the unit

 There should not be strong voltage vibration.

12.1.2

 The place shall easily support the outdoor

 Locate the outdoor unit as close to indoor

 The piping length and height drop cannot

 The place where the noise, vibration and

 There is enough room for installation and

 The air outlet and the air inlet are not

 It is easy to install the connecting pipes and

 There is no danger of fire due to leakage of

 It should be a dry and well ventilation place
 The support should be flat and horizontal
 Do not install the outdoor unit in a dirty or

Outdoor unit location selection

unit’s weight.

unit as possible

exceed the allowable value.

outlet air do not disturb the neighbors.

maintenance.

impeded, and not face the strong wind.

cables.

inflammable gas.

severely polluted place, so as to avoid

blockage of the heat exchanger in the
outdoor unit.

 If is built over the unit to prevent direct

sunlight, rain exposure, direct strong wend,
snow and other scraps accumulation, make
sure that heat radiation from the condenser
is not restricted.

More than 30cm/11.81in

F

e

n

c

e

o

b

o

s

r

t

a

c

l

e

s

More than 30cm/11.81in

More than 60cm/23.62in

More than 200cm/78.74in

More than
60cm/23.62in
(Service space

︶

12.2 Indoor unit installation

12.2.1 A5 duct indoor unit installation

12.2.1.1 Service space for indoor unit

12.2.1.2 Bolt pitch

Size of outline dimension mounted

Capacity(KBtu)

12 740 350

12.2.1.3 Install the pendant bolt

Select the position of installation hooks

according to the hook holes positions showed

in upper picture.

plug

L M

56

Drill four holes of Ø12mm, 45~50mm deep at

the selected positions on the ceiling. Then

embed the expansible hooks (fittings).

12.2.1.4 Install the main body

Make the 4 suspender through the 4 hanger of

the main body to suspend it. Adjust the

hexangular nuts on the four installation hooks

evenly, to ensure the balance of the body. Use

a leveling instrument to make sure the

levelness of the main body is within ±1°.

12.2.1.5 Install the air filter

Insert the air filter through the filter slot and fix it

with 2 screws.

② Stick the attached seal sponge as per the

indicating place in the following fig, and then

change the mounting positions of air return

panel and air return flange .

③ When install the filter mesh, please plug it

into flange inclined from air return opening, and

then push up.

12.2.1.6 Install the air duct

Please design the air duct as below

recommended picture

12.2.1.7 Change the air inlet direction

① Take off ventilation panel and flange, cut off

the staples at side rail.

④ The installation has finish, upon filter mesh

which fixing blocks have been insert to the

flange positional holes.

57

12.2.2 Cassette indoor unit installation

12.2.2.1 Service space for indoor unit

Select the position of installation hooks

according to the hook holes positions showed

in upper picture.

Drill four holes of Ø12mm, 45~50mm deep at

the selected positions on the ceiling. Then

embed the expansible hooks (fittings).

Face the concave side of the installation hooks

toward the expansible hooks. Determine the

length of the installation hooks from the height

of ceiling, then cut off the unnecessary part.

If the ceiling is extremely high, please

determine the length of the installation hook

depending on the real situation.

12.2.2.2 Bolt pitch

12.2.2.4 Install the main body

Make the 4 suspender through the 4 hanger of

the main body to suspend it. Adjust the

hexangular nuts on the four installation hooks

evenly, to ensure the balance of the body. Use

a leveling instrument to make sure the

levelness of the main body is within ±1°.

12.2.2.3 Install the pendant bolt

Adjust the position to ensure the gaps between

the body and the four sides of ceiling are even.

58

The body's lower part should sink into the

ceiling for 10~12 mm. In general, L is half of the

screw length of the installation hook.

Locate the air conditioner firmly by wrenching

the nuts after having adjusted the body's

position well.

12.2.2.5 Install the panel

Remove the grille

Tighten the screws under the panel hooks till

the panel closely stick on the ceiling to avoid

condensate water.

Hang the air-in grill to the panel, then connect

the lead terminator of the swing motor and that

of the control box with corresponding

terminators on the body respectively.

Hang the panel to the hooks on the mainbody.

Note: The panel shall be installed after the

wiring connected.

12.2.3 Console indoor unit installation

14.2.1.1 Service space for indoor unit

59

12.2.3.2 Install the main body

 Fix the hook with tapping screw onto the

wall

 Hang the indoor unit on the hook.

(The bottom of body can touch with floor or
suspended, but the body must install vertically.)

Capacity

(Btu/h)

24K 983 220

36K 1200 220

48K 1565 220

D E

② Wall-mounted installation

14.2.1 Ceiling-floor unit installation

14.2.1.1 Service space for indoor unit

12.2.1.2 Bolt pitch

① Ceiling installation

3.4.1Install the pendant bolt

① Ceiling installation

Select the position of installation hooks according

to the hook holes positions showed in upper picture.

Drill four holes of Ø12mm, 45~50mm deep at the

selected positions on the ceiling. Then embed the

expansible hooks (fittings).

② Wall-mounted installation

Install the tapping screws onto the wall.(Refer to

picture below)

60

14.2.1.3 Install the main body

Ceiling installation (The only installation

①

method for the unit with drain pump)

Remove the side board and the grille.

Locate the hanging arm on the hanging screw bolt.

Prepare the mounting bolts on the unit.

Put the side panels and grilles back.

② Wall-mounted installation

Hang the indoor unit by insert the tapping screws

into the hanging arms on the main unit. (The bottom

of body can touch with floor or suspended, but the

body must install vertically.)

12.3 Outdoor unit installation

12.3.1 Service space for outdoor unit

(Wall or obstacle)

More than 30cm

(11.81in)

Air inlet

Air inlet

Air outlet

More than 30cm(11.81in)

Maintain channel

More than 60cm

(23.62in)

More than 200cm(78.74in)

More than 60cm
(23.62in)

12.3.2 Bolt pitch

61

Model

9K 549 21.61 325 12.80 350 13.78

12K 549 21.61 325 12.80 350 13.78

18K 560 22.05 335 13.19 360 14.17

24K 640 25.20 405 15.94 448 17.64

36K 640 25.20 405 15.94 448 17.64

48K 634 24.96 404 15.91 448 17.64

B C D

mm inch mm inch mm inch

14.3.3 Install the Unit

Since the gravity center of the unit is not at its
physical center, so please be careful when

lifting it with a sling.
Never hold the inlet of the outdoor unit to

prevent it from deforming.

Do not touch the fan with hands or other
objects.

Do not lean it more than 45, and do not lay it

sidelong.
Make concrete foundation according to the

specifications of the outdoor units.
Fasten the feet of this unit with bolts firmly to

prevent it from collapsing in case of earthquake

or strong wind.

12.4 Refrigerant pipe installation

12.4.1 Maximum pipe length and height
drop

Considering the allowable pipe length and

height drop to decide the installation position.

Make sure the distance and height drop

between indoor and outdoor unit not exceeded

the date in the following table.

Model

9,000Btu/h 25 82.2 10 32.9

12,000Btu/h 25 82.2 10 32.9

18,000Btu/h 30 98.7 20 65.8

24,000Btu/h 50 164.5 25 82.2

36,000Btu/h 65 213.8 30 98.7

48,000Btu/h 65 213.8 30 98.7

Max. Length Max. Elevation

m Ft. m Ft.

12.4.2 The procedure of connecting pipes

1. Choose the pipe size according to the
specification table.

2. Confirm the cross way of the pipes.

3. Measure the necessary pipe length.

4. Cut the selected pipe with pipe cutter

 Make the section flat and smooth.

o

90

Lean

Crude

Burr

5. Insulate the copper pipe

 Before test operation, the joint parts should

not be heat insulated.

6. Flare the pipe

 Insert a flare nut into the pipe before flaring

the pipe

 According to the following table to flare the

pipe

Flare

Pipe

diameter

1/4"

(6.35)

3/8"

(9.52)

dimension A

(mm)

Min Max

8.3 8.7

12.0 12.4

Flare shape

90°

+

4

-

4

5

¡

ã

A

62

1/2"

(12.7)

5/8"

(15.9)

3/4" (19) 22.9 23.3

15.4 15.8

18.6 19.1

 After flared the pipe, the opening part must

be seal by end cover or adhesive tape to
avoid duct or exogenous impurity come into
the pipe.

7. Drill holes if the pipes need to pass the
wall.

8. According to the field condition to bend the
pipes so that it can pass the wall smoothly.

9. Bind and wrap the wire together with the
insulated pipe if necessary.

10. Set the wall conduit

11. Set the supporter for the pipe.

12. Locate the pipe and fix it by supporter

 For horizontal refrigerant pipe, the distance

between supporters should not be exceed
1m.

 For vertical refrigerant pipe, the distance

between supporters should not be exceed

1.5m.

13. Connect the pipe to indoor unit and outdoor
unit by using two spanners.

 Be sure to use two spanners and proper

torque to fasten the nut, too large torque
will damage the flare, and too small torque
may cause leakage. Refer the following
table for different pipe connection.



Pipe

Diameter

1/4" (6.35) 144~176 1420~1720

3/8" (9.52) 333~407 3270~3990

1/2" (12.7) 504~616 4950~6030

5/8" (15.9) 630~770 6180~7540

3/4" (19) 990~1210 9270~11860

Torque Sketch map

(kgf.cm) (N.cm)

12.4.3 Installation for the first time

Air and moisture in the refrigerant system have
undesirable effects as below:

● Pressure in the system rises.

● Operating current rises.

● Cooling or heating efficiency drops.

● Moisture in the refrigerant circuit may

freeze and block capillary tubing.

● Water may lead to corrosion of parts in the

refrigerant system.
Therefore, the indoor units and the pipes

between indoor and outdoor units must be leak
tested and evacuated to remove gas and

moisture from the system.

Gas leak check (Soap water method):

Apply soap water or a liquid neutral detergent

on the indoor unit connections or outdoor unit

connections by a soft brush to check for
leakage of the connecting points of the piping. If

bubbles come out, the pipes have leakage.

1. Air purging with vacuum pump

1) Completely tighten the flare nuts of the

indoor and outdoor units, confirm that both

the 2-way and 3-way valves are set to the

closed position.

2) Connect the charge hose with the push pin

of handle lo to the 3-way valves gas service

port..

3) Connect the charge hose of handle hi

connection to the vacuum pump.

4) Fully open the handle Lo of the manifold

valve.

5) Operate the vacuum pump to evacuate.

6) Make evacuation for 30 minutes and check

whether the compound meter indicates

-0.1Mpa (14.5Psi). If the meter does not

indicate -0.1Mpa (14.5Psi) after pumping 30

minutes, it should be pumped 20 minutes

more. If the pressure can’t achieve -0.1Mpa

(14.5Psi) after pumping 50 minutes, please

check if there are some leakage points.

Fully close the handle Lo valve of the

manifold valve and stop the operation of the

63

vacuum pump. Confirm that the gauge
needle does not move (approximately 5
minutes after turning off the vacuum pump).

7) Turn the flare nut of the 3-way valves about

45° counterclockwise for 6 or 7seconds
after the gas coming out, then tighten the

flare nut again. Make sure the pressure
display in the pressure indicator is a little

higher than the atmosphere pressure. Then

remove the charge hose from the 3 way
valve.

8) Fully open the 2 way valve and 3 way

valve and securely tighten the cap of the 3
way valve.

2. Air purging by refrigerant

the gauge indicates 0.3Mpa (43.5Psi) to 0.5
Mpa (72.5Psi).

6). Disconnect the charge set and the charging

cylinder, and set the 2-way and 3-way valves to
the open position.

Be sure to use a hexagonal wrench to operate
the valve stems.

7). Mount the valve stems nuts and the service

port cap.
Be sure to use a torque wrench to tighten the

service port cap to a torque 18N·m.

Be sure to check the gas leakage.

12.4.4 Adding the refrigerant after running

the system for many years

Procedure:

1). Confirm that both the 2-way and 3-way

valves are set to the closed position.

2). Connect the charge set and a charging
cylinder to the service port of the 3-way valve.

3). Air purging.

Open the valves on the charging cylinder and
the charge set. Purge the air by loosening the

flare nut on the 2-way valve approximately 45’
for 3 seconds then closing it for 1 minute; repeat

3 times.

After purging the air, use a torque wrench to
tighten the flare nut on the 2-way valve.

4). Check the gas leakage.
Check the flare connections for gas leakage.

5). Discharge the refrigerant.

Close the valve on the charging cylinder and
discharge the refrigerant by loosening the flare

nut on the 2-way valve approximately 45’ until

Procedure

1). Connect the charge hose to the 3-way

service port, open the 2-way valve and the
3-way valve.

Connect the charge hose to the valve at the

bottom of the cylinder. If the refrigerant is
R410A, make the cylinder bottom up to ensure

liquid charge.

2). Purge the air from the charge hose.

Open the valve at the bottom of the cylinder

and press the check valve on the charge set to
purge the air (be careful of the liquid

refrigerant).

3) Put the charging cylinder onto the electronic
scale and record the weight.

4) Operate the air conditioner at the cooling
mode.

5) Open the valves (Low side) on the charge set

and charge the system with liquid refrigerant.

6).When the electronic scale displays the

proper weight (refer to the gauge and the

64

pressure of the low side), disconnect the charge
hose from the 3-way valve’s service port

immediately and turn off the air conditioner

before disconnecting the hose.

7). Mount the valve stem caps and the service

port
Use torque wrench to tighten the service port

cap to a torque of 18N.m.

Be sure to check for gas leakage.

12.4.5 Re-installation while the indoor unit
need to be repaired

1. Collecting the refrigerant into the outdoor

unit

Procedure

1). Confirm that both the 2-way and 3-way

valves are set to the opened position

Remove the valve stem caps and confirm that
the valve stems are in the opened position.

Be sure to use a hexagonal wrench to operate

the valve stems.

2). Connect the charge hose with the push pin

of handle lo to the 3-way valves gas service
port.

3). Air purging of the charge hose.

Open the handle Lo valve of the manifold valve
slightly to purge air from the charge hose for 5

seconds and then close it quickly.

4). Set the 2-way valve to the close position.

5). Operate the air conditioner at the cooling

cycle and stop it when the gauge indicates

0.1Mpa (14.5Psi).

6). Set the 3-way valve to the closed position

immediately

Do this quickly so that the gauge ends up
indicating 0.3Mpa (43.5Psi) to 0.5 Mpa

(72.5Psi).

Disconnect the charge set, and tighten the
2-way and 3-way valve’s stem nuts.

Use a torque wrench to tighten the 3-way valves
service port cap to a torque of 18N.m.

Be sure to check for gas leakage.

2. Air purging by the refrigerant

Procedure:

1). Confirm that both the 2-way and 3-way

valves are set to the closed position.

2). Connect the charge set and a charging

cylinder to the service port of the 3-way valve

Leave the valve on the charging cylinder closed.

3). Air purging.

Open the valves on the charging cylinder and
the charge set. Purge the air by loosening the

flare nut on the 2-way valve approximately 45’

for 3 seconds then closing it for 1 minute; repeat
3 times.

After purging the air, use a torque wrench to
tighten the flare nut on the 2-way valve.

4). Check the gas leakage

Check the flare connections for gas leakage.

5). Discharge the refrigerant.

Close the valve on the charging cylinder and

discharge the refrigerant by loosening the flare
nut on the 2-way valve approximately 45’ until

the gauge indicates 0.3Mpa (43.5Psi) to 0.5
Mpa (72.5Psi).

6). Disconnect the charge set and the charging

cylinder, and set the 2-way and 3-way valves to
the open position

Be sure to use a hexagonal wrench to operate

the valve stems.

65

7). Mount the valve stems nuts and the service

port cap

Be sure to use a torque wrench to tighten the

service port cap to a torque 18N.m.
Be sure to check the gas leakage.

12.4.6 Re-installation while the outdoor unit
need to be repaired

1. Evacuation for the whole system

Procedure:

1). Confirm that both the 2-way and 3-way

valves are set to the opened position.

2). Connect the vacuum pump to 3-way valve’s

service port.

3). Evacuation for approximately one hour.

Confirm that the compound meter indicates

-0.1Mpa (14.5Psi).

4). Close the valve (Low side) on the charge set,

turn off the vacuum pump, and confirm that the

gauge needle does not move (approximately 5

minutes after turning off the vacuum pump).

5). Disconnect the charge hose from the

vacuum pump.

2. Refrigerant charging

1). Connect the charge hose to the charging
cylinder, open the 2-way valve and the 3-way

valve

Connect the charge hose which you
disconnected from the vacuum pump to the

valve at the bottom of the cylinder. If the
refrigerant is R410A, make the cylinder bottom

up to ensure liquid charge.

2). Purge the air from the charge hose
Open the valve at the bottom of the cylinder

and press the check valve on the charge set to

purge the air (be careful of the liquid
refrigerant).

3) Put the charging cylinder onto the electronic
scale and record the weight.

4). Open the valves (Low side) on the charge

set and charge the system with liquid refrigerant
If the system cannot be charge with the

specified amount of refrigerant, or can be
charged with a little at a time (approximately

150g each time) , operating the air conditioner

in the cooling cycle; however, one time is not
sufficient, wait approximately 1 minute and then

repeat the procedure.

5).When the electronic scale displays the
proper weight, disconnect the charge hose from

the 3-way valve’s service port immediately
If the system has been charged with liquid

refrigerant while operating the air conditioner,

turn off the air conditioner before disconnecting
the hose.

6). Mounted the valve stem caps and the
service port. Use torque wrench to tighten the

service port cap to a torque of 18N.m. Be sure

to check for gas leakage.

Procedure:

12.5 Drainage pipe installation

Install the drainage pipe as shown below and

take measures against condensation.
Improperly installation could lead to leakage

and eventually wet furniture and belongings.

12.5.1 Installation principle

 Ensure at least 1/100 slope of the drainage

pipe

66

 Adopt suitable pipe diameter
 Adopt nearby condensate water discharge

12.5.2 Key points of drainage water pipe
installation

1. Considering the pipeline route and
elevation

 Before installing condensate water pipeline,

determine its route and elevation to avoid
intersection with other pipelines and ensure
slope is straight.

2. Drainage pipe selection

 The drainage pipe diameter shall not small

than the drain hose of indoor unit

 According to the water flowrate and

drainage pipe slope to choose the suitable
pipe, the water flowrate is decided by the
capacity of indoor unit.

Relationship between water flowrate and

capacity of indoor unit

Capacity (x1000Btu) Water flowrate (l/h)

12 2.4
18 4
24 6
30 7
36 8
42 10
48 12
60 14

According to the above table to calculate the

total water flowrate for the confluence pipe

selection.

For horizontal drainage pipe (The following

table is for reference)

Reference

PVC
pipe

PVC25 20 39 27

PVC32 25 70 50

PVC40 31 125 88

PVC50 40 247 175

PVC63 51 473 334

value of
inner
diameter of
pipe (mm)

Allowable
maximum
water flowrate
(l/h)
Slope
1/50

Slope
1/100

Remark

For branch
pipe

Could be used
for confluence
pipe

Attention: Adopt PVC40 or bigger pipe to be the

main pipe.

For Vertical drainage pipe (The following

table is for reference)

Reference

PVC
pipe

PVC25 20 220

PVC32 25 410

PVC40 31 730

PVC50 40 1440

PVC63 51 2760

PVC75 67 5710

PVC90 77 8280

value of
inner
diameter of
pipe (mm)

Allowable
maximum
water
flowrate (l/h)

Remark

For branch
pipe

Could be used
for confluence
pipe

Attention: Adopt PVC40 or bigger pipe to be the

main pipe.

3. Individual design of drainage pipe
system

 The drainage pipe of air conditioner shall

be installed separately with other sewage
pipe, rainwater pipe and drainage pipe in
building.

 The drainage pipe of the indoor unit with

water pump should be apart from the one
without water pump.

4. Supporter gap of drainage pipe

 In general, the supporter gap of the

drainage pipe horizontal pipe and vertical
pipe is respectively 1m~1.5m (3.28~4.92ft)
and 1.5m~2.0m(4.95~6.56ft).

 Each vertical pipe shall be equipped with

not less than two hangers.

 Overlarge hanger gap for horizontal pipe

shall create bending, thus leading to air
block.

Too long distance

Gas bag

5. The horizontal pipe layout should avoid
converse flow or bad flow

67

Drainage pipe

Water flow

Drain

Drainage pipe

Water flow

tee

Water flow

Water flow

Drain

tee

Drainage pipe

Water flow

Water flow

Water flow

Drain

Water flow

Water flow

tee

Hanger

A

B

Down incline pipe

A:Length of horizontal pipe≤150mm

B: Lift height

≤the pump head of water pump

Branch pipe

Keep a certain degree

Water flow

Gas

Main pipe

Branch pipe

Water flow

Gas

Main pipe

 The correct installation will not cause

converse water flow and the slope of the
branch pipes can be adjusted freely

 The false installation will cause converse

water flow and the slope of the branch pipe
cannot be adjusted.

6. Water storage pipe setting

 If the indoor unit has high extra static

pressure and without water pump to
elevate the condensate water, such as high
extra static pressure duct unit , the water
storage pipe should be set to avoid
converse flow or blow water phenomena.

Indoor unit

More than 50mm

Plug

Water storage pipe

More than 25mm

7. Lifting pipe setting of indoor unit with
water pump

 The length of lifting pipe should not exceed

the pump head of indoor unit water pump.

 The drainage pipe should be set down

inclined after the lifting pipe immediately to
avoid wrong operation of water level switch.

 Refer the following picture for installation

reference.

Flexible pipe 300mm

8. Blowhole setting

 For the concentrated drainage pipe system,

there should design a blowhole at the
highest point of main pipe to ensure the
condensate water discharge smoothly.

 The air outlet shall face down to prevent dirt

entering pipe.

 Each indoor unit of the system should be

installed it.

 The installation should be considering the

convenience for future cleaning.

Blowhole

Indoor unit

Plug

Indoor unit

Plug

9. The end of drainage pipe shall not
contact with ground directly.

12.5.3 Drainage test

12.5.3.1. Water leakage test

After finishing the construction of drainage pipe

system, fill the pipe with water and keep it for

24 hours to check whether there is leakage at

joint section.

12.5.3.2. Water discharge test

1. Natural drainage mode(the indoor unit with

outdoor drainage pump)

Infuse above 600ml water through water test

hole slowly into the water collector, observe

whether the water can discharge through the

transparent hard pipe at drainage outlet.

68

2. Pump drainage mode

2.1 Disconnect the plug of water level switch,

remove the cover of water test hole and slowly

infuse about 2000ml water through the water

test hole, be sure that the water will not touch

the motor of drainage pump.

drainage outlet. (In light of the length of

drainage pipe, water shall be discharged

about 1 minute delayed)

2.3 Stop the operation of air conditioner, power

off the power supply and put the cover of

water test hole back to the original place.

a. After stopped the air conditioner 3 minutes,

check whether there is anything abnormal.

If drainage pipes have not been distributed

properly, over back-flow water shall cause

the flashing of alarm indicator at

remote-controlled receiving board and

even water shall run over the water

collector.

b. Continuously infusing water until water

level alarmed, check whether the drainage

pump could discharge water at once. If

water level does not decline under warning

water level 3 minutes later, it shall cause

shutdown of unit. When this situation

happens, the normal startup only can be

recovered by turning down power supply

and eliminating accumulated water.

2.2 Power on and let the air conditioner

operate for cooling. Check operation status

of drainage pump, and then connect the

plug of water level switch, check the

operation sound of water pump and

observe whether the water can discharge

through the transparent hard pipe at

Note: Drain plug at the main water-containing

plate is used for eliminating accumulated water

in water-containing plate when maintaining air

conditioner fault. During normal operation, the

plug shall be filled in to prevent leakage.

12.5.4 Insulation work of drainage pipe

Refer the introduction to the insulation

engineering parts.

12.6 Vacuum Drying and Leakage

Checking

12.6.1 Purpose of vacuum drying

 Eliminating moisture in system to prevent

the phenomena of ice-blockage and copper
oxidation.

69

Ice-blockage shall cause abnormal

operation of system, while copper oxide

shall damage compressor.

 Eliminating the non-condensable gas (air)

in system to prevent the components
oxidizing, pressure fluctuation and bad heat
exchange during the operation of system.

12.6.2 Selection of vacuum pump

 The ultimate vacuum degree of vacuum

pump shall be -756mmHg or above.

 Precision of vacuum pump shall reach

0.02mmHg or above.

12.6.3 Operation procedure for vacuum
drying

Due to different construction environment, two

kinds of vacuum drying ways could be chosen,

namely ordinary vacuum drying and special

vacuum drying.

1 Ordinary vacuum drying

 When conduct first vacuum drying,

connect pressure gauge to the infusing

mouth of gas pipe and liquid pipe, and

keep vacuum pump running for 1hour

(vacuum degree of vacuum pump shall be

reached -755mmHg).

 If the vacuum degree of vacuum pump

could not reach -755mmHg after 1 hour of

drying, it indicates that there is moisture or

leakage in pipeline system and need to go

on with drying for half an hour.

 If the vacuum degree of vacuum pump still

could not reach -755mmHg after 1.5 hours

of drying, check whether there is leakage

source.

 Leakage test: After the vacuum degree

reaches -755mmHg, stop vacuum drying

and keep the pressure for 1 hour. If the

indicator of vacuum gauge does not go up,

it is qualified. If going up, it indicates that

there is moisture or leak source.

2 Special vacuum drying

The special vacuum drying method shall be

adopted when:

 Finding moisture during flushing refrigerant

pipe.

 Conducting construction on rainy day,

because rain water might penetrated into

pipeline.

 Construction period is long, and rain water

might penetrated into pipeline.

 Rain water might penetrate into pipeline

during construction.

Procedures of special vacuum drying are as

follows:

 Vacuum drying for 1 hour.

 Vacuum damage, filling nitrogen to reach

0.5Kgf/cm2 .

Because nitrogen is dry gas, vacuum

damage could achieve the effect of

vacuum drying, but this method could not

achieve drying thoroughly when there is

too much moisture. Therefore, special

attention shall be drawn to prevent the

entering of water and the formation of

condensate water.

 Vacuum drying again for half an hour.

If the pressure reaches -755mmHg,start

to pressure leakage test. If it cannot reach

the value, repeat vacuum damage and

vacuum drying again for 1 hour.

 Leakage test: After the vacuum degree

reaches -755mmHg, stop vacuum drying

and keep the pressure for 1 hour. If the

indicator of vacuum gauge does not go up,

it is qualified. If going up, it indicates that

there is moisture or leak source.

12.7 Additional refrigerant charge

70

 After the vacuum drying process is carried

out, the additional refrigerant charge
process needs to be performed.

 The outdoor unit is factory charged with

refrigerant. The additional refrigerant
charge volume is decided by the diameter
and length of the liquid pipe between indoor
and outdoor unit. Refer the following
formula to calculate the charge volume.

Diameter of

liquid pipe

(mm)

Formula V=15g/m×(L-7.5) V=30g/m×(L-7.5)

Φ6.35 Φ9.52

V: Additional refrigerant charge volume (g).

L: The length of the liquid pipe (m).

Note:

 Refrigerant may only be charged after

performed the vacuum drying process.

 Always use gloves and glasses to protect

your hands and eyes during the charge
work.

 Use electronic scale or fluid infusion

apparatus to weight refrigerant to be
recharged. Be sure to avoid extra
refrigerant charged, it may cause liquid
hammer of the compressor or protections.

 Use supplementing flexible pipe to connect

refrigerant cylinder, pressure gauge and
outdoor unit. And The refrigerant should be
charged in liquid state. Before recharging,
The air in the flexible pipe and manifold
gauge should be exhausted.

 After finished refrigerant recharge process,

check whether there is refrigerant leakage
at the connection joint part. (Using gas
leakage detector or soap water to detect).

2 Purpose of refrigerant pipe insulation

 During operation, temperature of gas pipe

and liquid pipe shall be over-heating or
over-cooling extremely. Therefore, it is
necessary to carry out insulation; otherwise
it shall debase the performance of unit and
burn compressor.

 Gas pipe temperature is very low during

cooling. If insulation is not enough, it shall
form dew and cause leakage.

 Temperature of gas pipe is very high

(generally 50-100 ℃ ) during heating.
Insulation work must be carried out to
prevent hurt by carelessness touching.

3 Insulation material selection for

refrigerant pipe

 The burning performance should over

120℃

 According to the local law to choose

insulation materials

 The thickness of insulation layer shall be

above 10mm.If in hot or wet environment
place, the layer of insulation should be
thicker accordingly.

4 Installation highlights of insulation

construction

 Gas pipe and liquid pipe shall be insulated

separately, if the gas pipe and liquid pipe
were insulated together; it will decrease the
performance of air conditioner.

Liquid pipe Insulation meterial

Gas pipe

12.8 Engineering of insulation

12.8.1 Insulation of refrigerant pipe

1 Operational procedure of refrigerant

pipe insulation

Cut the suitable pipe → insulation (except joint

section)

connection

joint parts

→ flare the pipe → piping layout and

→ vacuum drying → insulate the

 The insulation material at the joint pipe
shall be 5~10cm longer than the gap of the
insulation material.
 The insulation material at the joint pipe
shall be inserted into the gap of the insulation
material.

71

 The insulation material at the joint pipe
shall be banded to the gap pipe and liquid pipe
tightly.
 The linking part should be use glue to paste

together

 Be sure not bind the insulation material

over-tight, it may extrude out the air in the
material to cause bad insulation and cause
easy aging of the material.

12.8.2 Insulation of drainage pipe

1 Operational procedure of refrigerant

pipe insulation

Select the suitable pipe

joint section)

drainage test→ insulate the joint parts

2 Purpose of drainage pipe insulation

The temperature of condensate drainage water

is very low. If insulation is not enough, it shall

form dew and cause leakage to damage the

house decoration.

3 Insulation material selection for

drainage pipe

 The insulation material should be flame

retardant material, the flame retardancy of
the material should be selected according
to the local law.

 Thickness of insulation layer is usually

above 10mm.

 Use specific glue to paste the seam of

insulation material, and then bind with
adhesive tape. The width of tape shall not
be less than 5cm. Make sure it is firm and
avoid dew.

4 Installation and highlights of insulation

construction

 The single pipe should be insulated before

connecting to another pipe, the joint part
should be insulated after the drainage test.

 There should be no insulation gap between

the insulation material.

→ piping layout and connection→

→ insulation (except

12.9 Engineering of electrical wiring

1 Highlights of electrical wiring

installation

 All field wiring construction should be

finished by qualified electrician.

 Air conditioning equipment should be

grounded according to the local electrical
regulations.

 Current leakage protection switch should

be installed.

 Do not connect the power wire to the

terminal of signal wire.

 When power wire is parallel with signal wire,

put wires to their own wire tube and remain
at least 300mm gap.

 According to table in indoor part named

“the specification of the power” to choose
the wiring, make sure the selected wiring
not small than the date showing in the
table.

 Select different colors for different wire

according to relevant regulations.

 Do not use metal wire tube at the place with

acid or alkali corrosion, adopt plastic wire
tube to replace it.

 There must be not wire connect joint in the

wire tube If joint is a must, set a connection
box at the place.

 The wiring with different voltage should not

be in one wire tube.

 Ensure that the color of the wires of outdoor

and the terminal No. are same as those of
indoor unit respectively.

12.10 Test operation

1 The test operation must be carried out

after the entire installation has been
completed.

2 Please confirm the following points

before the test operation.

 The indoor unit and outdoor unit are

installed properly.

 Tubing and wiring are correctly completed.
 The refrigerant pipe system is

leakage-checked.

 The drainage is unimpeded.
 The ground wiring is connected correctly.
 The length of the tubing and the added

stow capacity of the refrigerant have been
recorded.

 The power voltage fits the rated voltage of

the air conditioner.

 There is no obstacle at the outlet and inlet

of the outdoor and indoor units.

72

 The gas-side and liquid-side stop values

are both opened.

 The air conditioner is pre-heated by turning

on the power.

3 Test operation

Set the air conditioner under the mode of

"COOLING" by remote controller, and check

the following points.

Indoor unit

 Whether the switch on the remote controller

works well.

 Whether the buttons on the remote

controller works well.

 Whether the air flow louver moves

normally.

 Whether the room temperature is adjusted

well.

 Whether the indicator lights normally.
 Whether the temporary buttons works well.
 Whether the drainage is normal.
 Whether there is vibration or abnormal

noise during operation.

Outdoor unit

 Whether there is vibration or abnormal

noise during operation.

 Whether the generated wind, noise, or

condensed of by the air conditioner have
influenced your neighborhood.

 Whether any of the refrigerant is leaked.

73

13. Operation Characteristics

Temperature

Mode

Room temperature

Outdoor temperature

(Entry level)

Outdoor temperature

(E-Star level)

Outdoor temperature

(Hyper heat)

（-15℃～50℃(5℉～122℉)：For

Cooling operation Heating operation Drying operation

17℃～32℃(62℉～90℉)

0℃～50℃

(32℉～122℉)

the models with low temperature

cooling system）

-25℃～50℃(-13℉～122℉)

-30℃～50℃(-22℉～122℉)

0℃～30℃

(32℉～86℉)

-15℃～30℃

(5℉～86℉)

-25℃～30℃

(-13℉～86℉)

-30℃～50℃

(-22℉～122℉)

10℃～32℃

(50℉～90℉)

0℃～50℃

(32℉～122℉)

CAUTION:

1. If the air conditioner is used beyond the above conditions, certain safety protection features may

come into operation and cause the unit to operate abnormally.

2. The room relative humidity should be less than 80%. If the air conditioner operates beyond this

figure, the surface of the air conditioner may attract condensation. Please set the vertical air flow louver to

its maximum angle (vertically to the floor), and set HIGH fan mode.

3. The optimum performance will be achieved during this operating temperature zone.

74

14. Electronic Function

14.1 Abbreviation

T1: Indoor room temperature

T2: Coil temperature of indoor heat exchanger

middle.

T2B: Coil temperature of indoor heat exchanger

outlet.

T3: Coil temperature of condenser

T4: Outdoor ambient temperature
T5: Compressor discharge temperature

Td: Target temperature

14.2 Display function

14.2.1 Icon explanation on indoor display board

(A5 Duct)

PRE-DEF indicator(cooling and heating type)

Timer indicator

Operation lamp

Temporary button

or fan only indicator(cooling only type)

DEF./FAN

TIMER

OPERATION

MANUAL

ALARM

14.2.2 Icon explanation on indoor display board

(Compact cassette).

14.2.3 Icon explanation on indoor display board

(slim Cassette).

14.2.3 Icon explanation on indoor display board

(Console).

Alarm indicator

Infrared signal receiver

Display digital tube

14.2.1 Icon explanation on indoor display board

(Ceiling Floor)

14.3 Main Protection

14.3.1 Three minutes delay at restart for

compressor

st

1 minute delay for the 1
minutes delay for others.

14.3.2 Temperature protection of

compressor top

The unit will stop working when the compressor

top temp. protector cut off, and will restart after
the compressor top temp. protector restart.

14.3.3 Temperature protection of

compressor discharge

When the compressor discharge temp. is

getting higher, the running frequency will be
limited as below rules:

---Compressor discharge temp. T5>115 ℃
(239°F) for 5s, compressor stops and restarts
up till T5<90℃(194°F)

---110<T5<115 ℃ (239°F), decrease the
frequency to the lower level every 2 minutes.

---105(221°F)<T5<110℃(230°F), keep running
at the current frequency.

----T5<105℃(221°F), no limit for frequency.

14.3.4 Fan speed is out of control

When indoor fan speed keeps too low (lower

than 300RPM) for 50s, the indoor fan will shut
off and restart 30s later, if protection happened

time stand-up and 3

75

3 times when fan motor restarts continuously,
the unit will stop and the LED will display the

failure.

When outdoor fan speed keeps too low (lower
than 100RPM) or too high (higher than

1500RPM) for 60s, the unit will stop and the
LED will display the failure. Malfunction is

cleared 30s later.

14.3.5 Inverter module protection

The Inverter module has a protection function

about current, voltage and temperature. If these

protections happen, the corresponding code
will display on indoor unit and the unit will stop

working.

14.3.6 Indoor fan delayed open function

When the unit starts up, the louver will be active

immediately and the indoor fan will open 10s
later.

If the unit runs in heating mode, the indoor fan
will be also controlled by anti-cold wind

function.

14.3.7 Compressor preheating functions

Preheating permitting condition:
If T4＜3℃(37.4°F) and the machine connects
to power supply newly within 5 seconds or if T4
＜3℃(37.4°F) and compressor has stopped for
over 3 hours, the compressor heating cable will
work.

Preheating mode:

A weak current flow through the coil of
compressor from the wiring terminal of the

compressor, then the compressor is heated
without operation.

Preheating release condition:
If T4≥5 ℃ (41°F) or the compressor starts
running, the preheating function will stop.

14.3.9 Condenser high temperature T3

protection

---55°C(131°F)<T3<60°C(140°F), the

compressor frequency will decrease to the
lower level until to F1 and then runs at F1.If

T3<54°C(129.2°F), the compressor will keep

running at the current frequency.

---T3<52°C(125.6°F), the compressor will not

limit the frequency and resume to the former

frequency.

---T3>60°C(140°F) for 5 seconds, the
compressor will stop until T3<52°C(125.6°F).

14.3.10 Evaporator low temperature T2

protection

---T2<0°C(32°F), the compressor will stop and

restart when T2

≧5°C(41°F).

---0°C(32°F)≦T2<4°C(39.2°F), the compressor
frequency will be limited and decreased to the

lower level

---4°C(39.2°F)≤T2≤7°C(44.6°F), the

compressor will keep the current frequency.

---T2>7°C(44.6°F), the compressor frequency
will not be limited.

14.4 Operation Modes and Functions

14.4.1 Fan mode

(1) Outdoor fan and compressor stop.
(2) Temperature setting function is disabled,

and no setting temperature is displayed.
(3) Indoor fan can be set to high/med/low/auto.

(4) The louver operates same as in cooling

mode.
(5) Auto fan:

T1-24¡ãC(75.2¡ãF)

6.0¡ãC(42.8¡ãF)

5.0¡ãC(41.0¡ãF)

4.0¡ãC(39.2¡ãF)

2.5¡ãC(36.5¡ãF)

1.0¡ãC(33.8¡ãF)

a

b

c

d

e

14.4.2 Cooling Mode

14.4.2.1 Outdoor fan running rules

T4

28℃(82.4°F)

26℃(78.8°F)

25℃(77°F)

23℃(73.4°F)

22℃(71.6°F)

20℃(69°F)

19℃(66.2°F)

17℃(62.6°F)

A DC_FAN_HI_SPD_ADD

B DC_FAN_MID_SPD_ADD

C DC_FAN_MIN_SPD_ADD

D DC_FAN_SLOW_SPD_ADD

E DC_FAN_SSLOW_SPD_ADD

14.4.2.2 Indoor fan running rules

H

(H-L)*0.75+L

(H-L)*0.5+L

(H-L)*0.25+L
L

76

(

)

)

(

)

)

(

)

)

In cooling mode, indoor fan runs all the time
and the speed can be selected as high,

medium, low and auto.

The indoor fan is controlled as below:

Setting fan

speed

H

M

L

T1-Td ℃(°F)

4.5(40.1)

3.0(37.4)

1.5(34.7)

4.5(40.1)

3.0(37.4)

1.5(34.7)

4.5(40.1)

3.0(37.4)

1.5(34.7)

Actual fan speed

A H（=H）
B
C

D M(M=M)
E
F

G L(L=L)
H
I

H+(H+=H+G)

H-（H-=H-G)

M+(M+=M+Z)

M-(M-=M-Z)

L+(L+=L+D)

L-(L-=L-D)

Auto fan in cooling mode acts as follow:

T1-Td

6.0¡ãC(42.8¡ãF)

5.0¡ãC(41.0¡ãF)

4.0¡ãC(39.2¡ãF)

2.5¡ãC(36.5¡ãF)

1.0¡ãC(33.8¡ ãF)

a

b

c

d

e

H

(H-L)*0.75+L

(H-L)*0.5+L

(H-L)*0.25+L

L

14.4.3 Heating Mode

14.4.3.1 Outdoor fan running rules

T4

21℃(69.8°F)

19℃(66.2°F)

18℃(64.4°F)

16℃(60.8°F)

15℃(59°F)

13℃(55.4°F)

12℃(53.6°F)

10℃(50°F)

E DC_FAN_SSLOW_SPD_ADD

D DC_FAN_SLOW_SPD_ADD

C DC_FAN_MIN_SPD_ADD

B DC_FAN_MID_SPD_ADD

A DC_FAN_HI_SPD_ADD

14.4.3.2 Indoor fan running rules

When the compressor is on, the indoor fan can
be set to high/med/low/auto. And the anti-cold

wind function has the priority.
The indoor fan is controlled as below:

Setting fan

speed

H

M

L

T1-Td+1.5 ℃(34.7°F)

-1.5(29.3°F)

26.6°F

-3.0

-4.5(23.9°F

-1.5(29.3°F)

26.6°F

-3.0

-4.5(23.9°F

-1.5(29.3°F)

-3.0

26.6°F

-4.5(23.9°F

Actual fan speed

H-（H-=H-G)

H（=H）

H+(H+=H+G)

M-(M-=M-Z)

M(M=M)

M+(M+=M+Z)

L-(L-=L-D)

L(L=L)

L+(L+=L+D)

Auto fan action in heating mode:

1-Td+1.5¡ãC(34.7¡ãF)

0.0¡ãC(32¡ãF)

-1¡ãC(30.2¡ãF)

-2¡ãC(28.4¡ãF)

-3¡ãC(26.6¡ãF)

L

(H+-L)*0.2+L

(H+-L)*0.4+L

(H+-L)*0.6+L

-4¡ãC(24.8¡ãF)

-5¡ãC(23.0¡ãF)

-6¡ãC(21.2¡ãF)

-6.5¡ãC(20.3¡ãF)

(H+-L)*0.8+L

H+

14.4.3.3 Defrosting mode

If any one of the following items is satisfied, AC

will enter the defrosting mode.
After the compressor starts up and keeps

running, mark the minimum value of T3 from

the 10th minutes to 15th minutes as T30.

1)If the compressor cumulate running time is up
to 29 minutes and T3< TCDI1, T3 ＋
T30SUBT3ONE≦T30.

2)If the compressor cumulate running time is up
to 35 minutes and T3< TCDI2, T3 ＋
T30SUBT3TWO≦T30.

3)If the compressor cumulate running time is up
to 29 minutes and T3< TCDI3 for 3 minutes.

4)If the compressor cumulate running time is up
to 120 minutes and T3<-15℃(5°F).

Condition of ending defrosting:

If any one of the following items is satisfied, the

defrosting will finish and the machine will turn to
normal heating mode.

----T3 rises to be higher than TCDE1.

----T3 keeps to be higher than TCDE2 for 80

seconds.

----The machine has run for 10 minutes in
defrosting mode.
Defrosting action：

77

Compressor

4-Way valve

Outdoor fan

no longer than 10min

10S

X1

X2

10S

14.4.3.5 Evaporator coil temperature

protection

T2

TEstop

TEdown

TEH2

Off

Decrease

Hold

Resume

Off: Compressor stops.

Decrease: Decrease the running frequency to

the lower level.

Hold: Keep the current frequency.

Resume: No limitation for frequency.

14.4.4 Auto-mode

This mode can be chosen with remote

controller and the setting temperature can be
changed between 17~30℃(62.6~86°F).
In auto mode, the machine will choose cooling,
heating or fan-only mode according to ΔT (ΔT

=T1-Ts).

ΔT=T1-Ts Running mode

ΔT≥1℃(33.8°F) Cooling

-1℃ (30.2°F)<ΔT<1 ℃
(33.8°F)

ΔT≤-1℃(30.2°F) Heating

Fan-only

Indoor fan will run at auto fan of the relevant

mode.
The louver operates same as in relevant mode.

If the machine switches mode between heating

and cooling, the compressor will keep stopping

for 15 minutes and then choose mode
according to T1-Ts.

If the setting temperature is modified, the

machine will choose running function again.

14.4.5 Drying mode

Drying mode works the same as cooling mode

in low speed.

All protections are active and the same as that
in cooling mode.

14.4.6 Timer function

14.4.6.1 Timing range is 24 hours.

14.4.6.2 Timer on. The machine will turn on
automatically when reaching the setting time.

14.4.6.3 Timer off. The machine will turn off

automatically when reaching the setting time.

14.4.6.4 Timer on/off. The machine will turn on

automatically when reaching the setting “on”
time, and then turn off automatically when

reaching the setting “off” time.

14.4.6.5 Timer off/on. The machine will turn off
automatically when reaching the setting “off”

time, and then turn on automatically when

reaching the setting “on” time.

14.4.6.6 The timer function will not change the

AC current operation mode. Suppose AC is off
now, it will not start up firstly after setting the

“timer off” function. And when reaching the

setting time, the timer LED will be off and the
AC running mode has not been changed.

14.4.6.7 The setting time is relative time.

14.4.7 Sleep function mode

14.4.7.1 The sleep function is available in
cooling, heating or auto mode.

14.4.7.2. Operation process in sleep mode is as

follow:
When cooling, the setting temperature rises 1℃
(33.8°F) (be lower than 30℃(86°F)) every one
hour, 2 hours later the setting temperature

stops rising and the indoor fan is fixed at low

speed.
When heating, the setting temperature
decreases 1℃(33.8°F) (be higher than 17℃
(62.6°F)) every one hour, 2 hours later the

78

setting temperature stops rising and indoor fan
is fixed at low speed. (Anti-cold wind function

has the priority).

14.4.7.3 Operation time in sleep mode is 7

hours. After 7 hours the AC quits this mode and

turns off

14.4.7.4 Timer setting is available.

14.4.8 Auto-Restart function

The indoor unit is equipped with auto-restart

function, which is carried out through an

auto-restart module. In case of a sudden power
failure, the module memorizes the setting

conditions before the power failure. The unit will
resume the previous operation setting (not

including sleep function) automatically after 3

minutes when power returns.

14.4.9 Follow me

1) If the indoor PCB receives the signal which

results from pressing the FOLLOW ME button

on remote controller or wired remote controller,
the buzzer will emit a sound and this indicates

the follow me function is initiated. But when the

indoor PCB receives signal which sent from
remote controller every 3 minutes, the buzzer

will not respond. When the unit is running with
follow me function, the PCB will control the unit

according to the temperature from follow me

signal, and the temperature collection function
of room temperature sensor will be shielded.

2) When the follow me function is available,

the PCB will control the unit according to the

room temperature from the remote controller

and the setting temperature.

3) The PCB will take action to the mode

change information from remote controller

signal, but it will not affected by the setting
temperature.

4) When the unit is running with follow me

function, if the PCB doesn’t receive any signal

from remote controller for 7 minutes or pressing

FOLLOW ME button again, the follow me
function will be turned off automatically, and the

temperature will control the unit according to

the room temperature detected from its own
room temperature sensor and setting

temperature.

14.4.10 8℃ Heating(optional)

In heating operation, the preset temperature of
the air conditioner can be as lower as 8 ℃
(46.4°F), which keeps the room temperature
steady at 8℃(46.4°F) and prevents household
things freezing when the house is unoccupied
for a long time in severe cold weather.

1.3.11 Drain pump control

Adopt the water-level switch to control the

action of drain pump.
Main action under different condition :( every 5

seconds the system will check the water level

one time)

1. When the A/C operates with cooling

(including auto cooling), dehumidifying, and
forced cooling mode, the pump will start

running immediately and continuously, till stop

cooling.

2. Once the water level increase and up to the

control point, LED will alarm and the drain
pump open and continue checking the water

level. If the water level fall down and LED

disalarmed (drain pump delay close 1 minute)
and operate with the last mode. Otherwise the

entire system stop operating (including the

pump) and LED remain alarming after 3
minutes,

79

Point check function

Press the LED DISPLAY or LED or MUTE button of the remote controller three times, and then press

the AIR DIRECTION or SWING button three times in ten seconds, the buzzer will keep ring for two

seconds. The air conditioner will enter into the information enquiry status. You can press the LED

DISPLAY or AIR DIRECTION button to check the next or front item’s information.

When the AC enter the “information enquiry” status, it will display the code name

details are as follows.

Enquiry information Displaying code Meaning

T1 T1 T1 temp.

T2 T2 T2 temp.

T3 T3 T3 temp.

T4 T4 T4 temp.

T2B Tb T2B temp.

TP TP TP temp.

TH TH TH temp.

Targeted Frequency FT Targeted Frequency

Actual Frequency Fr Actual Frequency

Indoor fan speed IF Indoor fan speed

Outdoor fan speed OF Outdoor fan speed

EXV opening angle LA EXV opening angle

Compressor continuous running time CT Compressor continuous

Causes of compressor stop. ST Causes of compressor

Reserve A0

Reserve A1

Reserve 0

Reserve 1

Reserve 2

Reserve 3

Reserve 4

Reserve 5

Reserve 6

Reserve L

Reserve A

Reserve U

Reserve T

running time

stop.

in 2 seconds, the

80

When the AC enter into the information enquiry status, it will display the code value in the next 25s

details are as follows.

Enquiry

information

T1,T2,T3,T4,

T2B,TP,TH,

Targeted

Frequency,

Actual

Frequency

Indoor fan

speed

/Outdoor fan

speed

EXV opening

angle

Compressor

continuous

running time

Causes of

compressor

stop.

Reserve 0-FF

Display value Meaning Remark

-1F,-1E,-1d,-1c,-

1b,-1A

-19—99 -19—99
A0,A1,…A9 100,101,…109
b0,b1,…b9 110, 111 , …11 9
c0,c1,…c9 120,121,…129
d0,d1,…d9 130,131,…139
E0,E1,…E9 140,141,…149
F0,F1,…F9 150,151,…159

0 OFF

1,2,3,4 Low speed, Medium

14-FF Actual fan

0-FF Actual EXV opening

0-FF 0-255 minutes If the actual value exceeds the

0-99 For the detailed

-25,-24,-23,-22,-21,-20 1. All the displaying temperature is actual

value.

2. All the temperature is °C no matter

what kind of remote controller is used.

3. T1,T2,T3,T4,T2B display range:-25~70,

TP display range:-20~130.

4. Frequency display range: 0~159HZ.

5. If the actual value exceeds the range, it

will display the maximum value or minimum

value.

For some big capacity motors.

speed, High speed,

Turbo

For some small capacity motors,

speed=Display value

turns to decimal

value and then

multiply 10. The unit

is RPM.

value=Display value

turns to decimal

value and then

multiply 2.

meaning, please

consult with engineer

display value is from 14-FF(hexadecimal),

the corresponding fan speed range is from

200-2550RPM.

range, it will display the maximum

value or minimum value.

Decimal display

, the

81

16. Troubleshooting

Safety

Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity

power in capacitor.

Electrolytic Capacitors

(HIGH VOLTAGE! CAUTION!)

For other models, please connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, -

terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.

Note: The picture above is only for reference. The plug of your side may be different.

82

16.1 Indoor Unit Error Display

Operation

lamp

☆ 1 time

☆ 2 times

☆ 4 times

☆ 5 times

☆ 6 times

☆ 7 times

☆ 8 times

☆ 1 time

☆ 2 times O F1 Outdoor ambient temperature sensor (T4 ) malfunction

☆ 3 times

☆ 4 times

☆ 5 times

☆ 6 times

Timer lamp Display LED STATUS

X

X

X

X

X

X

X

O F0 Current overload protection

O

F2 Condenser coil temperature sensor (T3) malfunction

O

O

F4 Outdoor unit EEPROM parameter error

O

F5 Outdoor fan speed has been out of control

E0 Indoor unit EEPROM parameter error

E1

E3 Indoor fan speed has been out of control

E4 Indoor room temperature sensor (T1 ) malfunction

E5 Evaporator coil temperature sensor (T2) malfunction

EC Refrigerant leakage detection

EE Water-level alarm malfunction

F3

Communication malfunction between indoor and

outdoor units

Compressor discharge temperature sensor (T5)

malfunction

☆ 7 times

☆ 8 times

☆ 9 times

☆ 10 times

☆ 1 times ☆

☆ 2 times ☆

☆ 3 times ☆

☆ 4 times ☆

☆ 5 times ☆

☆ 6 times ☆

☆ 7 times ☆

☆ 8 times ☆

O F6

O F7

O F8 Cassette optional lift panel malfunction

O F9 Cassette optional lift panel not closed

P0 Inverter module (IPM) malfunction

P1 Over-voltage or under-voltage protection

P2 Compressor top high temperature protection (OLP)

P3 Low ambient temperature cut off in heating

P4 Compressor drive malfunction

P5 Indoor units mode conflict

P6 Low pressure protection

P7 Outdoor IPM temperature sensor error

O（light） X（off） ☆（flash）

Indoor coil outlet pipe sensor(Located on outdoor unit
low pressure valve)

Communication malfunction between Cassette optional

lift panel and the unit

83

16.2 Outdoor unit error display

For 9K-24K outdoor unit:

No. Problems

1 standby for normal O X

2 Operation normally X O

3 Compressor drive board EEPROM error O

4 IPM malfunction or IGBT over-strong current protection

5 Over voltage or too low voltage protection O O P1

6 Inverter compressor drive error X

7 Inverter compressor drive error

Communication malfunction between main control board

8

and driver board

84

LED2

(Green)

☆

☆

☆ ☆

LED1

(Red)

☆

X P0

☆

O P4

IU display

E5

P4

P4

For 36K-48K Outdoor Unit

No Problems Error Code

1 Communication malfunction between indoor and outdoor units E1

2 Current overload protection F0

3 Outdoor ambient temperature sensor (T4 ) malfunction F1

4 Condenser coil temperature sensor (T3) malfunction F2

5 Compressor discharge temperature sensor (T5) malfunction F3

6 Outdoor unit EEPROM parameter error F4

7 Outdoor fan speed has been out of control F5

8

Inverter module (IPM) malfunction

9 Over-voltage or under-voltage protection P1

10

Compressor top high temperature protection (OLP) P2

11

Low ambient temperature cut off in heating P3

12 Compressor drive malfunction P4
13 High temperature protection of indoor coil in heating J0

14 Outdoor temperature protection of outdoor coil in cooling J1

15 Temperature protection of compressor discharge J2

16 PFC module protection J3

P0

17 Communication malfunction between control board and IPM board J4

18 High pressure protection J5

19 Low pressure protection J6

20

Outdoor IPM module temperature sensor malfunction

21 AC voltage protection J8

P7

85

Outdoor check function

N Display Remark

00 Normal display

01 Indoor unit capacity demand code

02 Amendatory capacity demand code

The frequency after the capacity requirement

03

transfer

04 The frequency after the frequency limit

05 The frequency of sending to 341 chip

Indoor unit evaporator outlet temp.(heating T2

06

cooling T2B)

07 Condenser pipe temp.(T3) If the temp. is lower than -9 degree, the digital display tube

08 Outdoor ambient temp.(T4)

09 Compressor discharge temp.(T5)

10 AD value of current

11 AD value of voltage

12 Indoor unit running mode code Off:0, Fan only 1,Cooling:2, Heating:3

13 Outdoor unit running mode code Off:0, Fan only 1,Cooling:2, Heating:3, Forced cooling:4

14 EXV open angle

Display running frequency, running state or malfunction

code

Actual data*HP*10

If capacity demand code is higher than 99, the digital display

tube will show single digit and tens digit. (For example, the

digital display tube show “5.0”,it means the capacity demand

is 15. the digital display tube show “60”,it means the

capacity demand is 6.0)

If the temp. is lower than 0 degree, the digital display tube

，

will show “0”.If the temp. is higher than 70 degree, the digital

display tube will show “70”.

will show “-9”.If the temp. is higher than 70 degree, the

digital display tube will show “70”. If the indoor unit is not

connected, the digital display tube will show: “――”

The display value is between 13~129 degree. If the temp. is

lower than 13 degree, the digital display tube will show

“13”.If the temp. is higher than 99 degree, the digital display

tube will show single digit and tens digit. (For example, the

digital display tube show “0.5”,it means the compressor

discharge temp. is 105 degree. the digital display tube show

“1.6”,it means the compressor discharge temp. is 116

degree)

The display value is hex number.

Actual data/4.

If the value is higher than 99, the digital display tube will

show single digit and tens digit.

For example, the digital display tube show “2.0”,it means the

EXV open angle is 120×4=480p.)

86

Frequency limit caused by

Bit7

IGBT radiator

Frequency limit caused by

Bit6

PFC

Bit5 Frequency limit caused by T4.

15 Frequency limit symbol

16 DC fan motor speed

17 IGBT radiator temp.

Indoor unit number The indoor unit can communicate with outdoor unit well.

18

19 Evaporator pipe temp. T2 of 1# indoor unit

20 Evaporator pipe temp. T2 of 2# indoor unit

21 Evaporator pipe temp. T2 of 3# indoor unit

22 1# Indoor unit capacity demand code

23 2# Indoor unit capacity demand code

24 3# Indoor unit capacity demand code

25 Room temp. T1 of 1# indoor unit

26 Room temp. T1 of 2# indoor unit

27 Average room temp. T1

28 Reason of stop

29 Evaporator pipe temp. T2B of 1# indoor unit

30 Evaporator pipe temp. T2B of 2# indoor unit

Bit4 Frequency limit caused by T2.

Bit3 Frequency limit caused by T3.

Bit2 Frequency limit caused by T5.

Frequency limit caused by

Bit1

current

Frequency limit caused by

Bit0

voltage

The display value is between 30~120 degree. If the temp. is

lower than 30 degree, the digital display tube will show

“30”.If the temp. is higher than 99 degree, the digital display

tube will show single digit and tens digit. (For example, the

digital display tube show “0.5”,it means the IGBT radiator

temp. is 105 degree. the digital display tube show “1.6”,it

means the IGBT radiator temp. is 116 degree)

General:1, Twins:2

If the temp. is lower than 0 degree, the digital display tube

will show “0”.If the temp. is higher than 70 degree, the digital

display tube will show “70”. If the indoor unit is not

connected, the digital display tube will show: “――”

Actual data*HP*10

If capacity demand code is higher than 99, the digital display

tube will show single digit and tens digit. (For example, the

digital display tube show “5.0”,it means the capacity demand

is 15. the digital display tube show “60”,it means the

capacity demand is 6.0). If the indoor unit is not connected,

the digital display tube will show: “――”

If the temp. is lower than 0 degree, the digital display tube

will show “0”.If the temp. is higher than 70 degree, the digital

display tube will show “70”. If the indoor unit is not

connected, the digital display tube will show: “――”

If the temp. is lower than 0 degree, the digital display tube

will show “0”.If the temp. is higher than 70 degree, the digital

display tube will show “70”. If the indoor unit is not

connected, the digital display tube will show: “――”

The display value is

hex number. For

example, the digital

display tube show

2A, then Bit5=1,

Bit3=1, Bit1=1.

It means frequency

limit caused by T4,

T3 and current.

87

16.3 Diagnosis and Solution

your

16.3.1 EEPROM error diagnosis and solution (E0/F4)

Error Code

E0/F4

Malfunction decision

conditions

Supposed causes ● Installation mistake

Indoor or outdoor PCB main chip does not receive feedback

from EEPROM chip.

● PCB faulty

Trouble shooting:

EEPROM:

An electrically erasable programmable read-only memory whose contents can be erased

and reprogrammed using a pulsed voltage.

Indoor PCB Outdoor PCB

Note: The two photos above are only for reference, it’s may be not same totally with the ones on

side.

88

16.3.2 Communication malfunction between indoor and outdoor units diagnosis and solution

(E1)

Error Code

E1

Malfunction decision

conditions

Supposed causes ● Wiring mistake

Indoor unit does not receive the feedback from outdoor unit during

110 seconds and this condition happens four times continuously.

● Indoor or outdoor PCB faulty

Trouble shooting:

89

Remark:

Use a multimeter to test the DC
voltage between 2 port and 3 port of

outdoor unit. The red pin of

multimeter connects with 2 port while
the black pin is for 3 port.

When AC is normal running, the

voltage will move alternately between

-50V to 50V.

If the outdoor unit has malfunction,
the voltage will move alternately with

positive value.

While if the indoor unit has

malfunction, the voltage will be a

certain value.
Remark,

The old label is L1,L2,S, L1,L2
The new label is 1, 2, 3, L1,L2

Remark:

Use a multimeter to test the
resistance of the reactor which does

not connect with capacitor.

The normal value should be around
zero ohm. Otherwise, the reactor

must have malfunction and need to

be replaced.

90

16.3.3 Fan speed has been out of control diagnosis and solution (E3)

Error Code

Malfunction decision

conditions

Supposed causes

Trouble shooting:

E3

When indoor fan speed keeps too low (300RPM) for certain time,

the unit will stop and the LED will display the failure.

● Wiring mistake

● Fan ass’y faulty

● Fan motor faulty

● PCB faulty

91

Index 1:
1

. Indoo

Power

conn

roblems and need to be replaced.

p

DC

r DC fan motor(control chip is inside fan moto

r)

on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan moto

ector. If the value of the voltage is not in the range showing in below table, the PCB must h

motor voltage input and output

NO. Color Signal Voltage

1 Red Vs/Vm 200~380V

2 --- --- ---

3 Black GND 0V

4 White Vcc 13.5~16.5V

5 Yellow Vsp 0~6.5V

6 Blue FG 13.5~16.5V

r

ave

92

16.3.4 Open circuit or short circuit of temperature sensor diagnosis and solution

(E4/E5/F1/F2/F3)

Error Code

E4/E5/F1/F2/F3

Malfunction decision

conditions

If the sampling voltage is lower than 0.06V or higher than 4.94V,

the LED will display the failure.

Supposed causes ● Wiring mistake

● Sensor faulty

Trouble shooting:

93

16.3.5 Refrigerant Leakage Detection diagnosis and solution (EC)

Error Code

EC

Malfunction decision

conditions

Supposed causes ● T2 sensor faulty

Define the evaporator coil temp.T2 of the compressor just starts

running as Tcool.

In the beginning 5 minutes after the compressor starts up, if T2
＜Tcool－2℃ does not keep continuous 4 seconds and this

situation happens 3 times, the display area will show “EC” and

AC will turn off.

● Indoor PCB faulty

● System problems, such as leakage or blocking.

Trouble shooting:

Power off, then restart the

unit 2 minutes later.

Yes

Check cool air blowing out
from indoor air outlet

No

Yes

Check if T2 sensor

Yes

Check leakage of system

No

check blockIng of system and

clear the blocking

Yes

Replace indoor PCB.

Repair the leakage and

recharge the refrigerant.

94

16.3.6

Error Code

Water-level alarm malfunction diagnosis and solution

Malfunction decision
conditions

Supposed causes

EE

If the sampling voltage is not 5V, the LED will display the
failure.

● Wiring mistak

●

Water-level switch faulty

e

● Water pump faulty

● Indoor PCB fau

lty

95

16.3.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution (P0)

Error Code

Malfunction decision

conditions

Supposed causes

Trouble shooting:

P0

When the voltage signal that IPM send to compressor drive chip

is abnormal, the display LED will show “P0” and AC will turn off.

Wiring mistake; IPM malfunction; Outdoor fan ass’y faulty

Compressor malfunction; Outdoor PCB faulty

96

P-U

P-V

97