KeepRite DLFCAB, DLCCAR, DLCDAR, DLFDHB, DLCDHR Service Manual

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Page 1

DLFCAB / DLCCAR / DLFCHB / DLCCHR DLFDAB / DLCDAR / DLFDHB / DLCDHR

SERVICE MANUAL

High Wall Ductless Split System − Sizes 09 to 36

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS 1.............................

INTRODUCTION 1.......................................

MODEL / SERIAL NUMBER NOMENCLATURES 2............

DIMENSIONS 3..........................................

CLEARANCES 5.........................................

WIRING 6...............................................

CONNECTION DIAGRAMS 7..............................

WIRING DIAGRAMS 8....................................

PCB PRINTED DIAGRAMS 18.............................

REFRIGERATION DIAGRAMS 31...........................

REFRIGERATION LINES 32................................

SYSTEM EVACUATION AND CHARGING 33.................

SEQUENCE OF OPERATION 34............................

TROUBLESHOOTING 36..................................

TROUBLESHOOTING FOR THE MAIN FUNCTION 41.........

DISASSEMBLY INSTRUCTIONS INDOOR UNIT 56...........

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT 62.........

APPENDIX 78...........................................

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air−conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.).

Only trained, qualified installers and service mechanics should install, start−up, and service this equipment.

Untrained personnel can perform basic maintenance functions such as cleaning coils. All other operations should be performed by trained service personnel.

When wo rkin g o n th e equ ipm ent, o bserv e precau tio ns in t he literatu re and on tags, st ickers, and labels attached to the equipme nt.

Follow all safety codes. Wear safety glasses and work gloves. Keep a quenching cloth and fire extinguisher nearby when brazing. Use care in handling, rigging, and setting bulky equipment.

Read this manual thoroughly and follow all warnings or cautions included in literature and attached to the unit. Consult local building codes and National Electrical Code (NEC) for special requirements.

Recognize safety information. This is the safety−alert symbol you see this symbol on the unit an d in instructions or manuals, be alert to the potential for personal injury. Understand these signal words: DANGER, WARNI NG, and CAUTION. These words are used with the safety−alert symbol. DANGER identifies th e most seriou s hazards wh ich will result in severe personal injury or death.

. When

WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will resu lt in e nhanced installation , reliability, or operation.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

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

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Do not bury more than 36 in. (914 mm) of refrigerant pipe in the ground. If any section of pipe is buried, there must be a 6 in. (152 mm) vertical rise to the valve connections on the outdoor units. If more than the recommended length is buried, refrigerant may migrate to the cooler buried section during extended periods of system shutdown. This causes refrigerant slugging and could possibly damage the compressor at start−up.

WARNING

EXPLOSION HAZARD

Failure to follow this warning could result in death, serious personal injury, and/or property damage.

Never use air or gases containing oxygen for leak testing or operating refrigerant compressors. Pressurized mixtures of air or gases containing oxygen can lead to an explosion.

CAUTION

INTRODUCTION

This service manual provides the necessary information to service, repair, and maintain the ductless family cooling only and heat pumps. Section 2 of this manual is an appendix with data required to perform troubleshooting. Use the Table of Contents to locate a desired topic.

Specifications subject to change without notice.

Page 2

MODEL / SERIAL NUMBER NOMENCLATURES

INDOOR UNIT

DLF C A09

DLF = FAN COIL UNIT

BAJ

C = MODEL D = MODEL

SYSTEM TYPE A = COOLING ONLY Q = HEAT PUMP

UNIT TYPE B = HIGH WALL

NOMINAL CAPACITY 09 - 3/4 TON 12 - 1 TON 18 - 1- 1/2 TONS 24 - 2 TONS 30 - 2- 1/2 TONS 36 - 3 TONS

DLC = OUTDOOR UNIT

C = MODEL D = MODEL

SYSTEM TYPE A = COOLING ONLY Q = HEAT PUMP

OUTDOOR UNIT

DLC C A09

RAJ

A = ALL MODELS

1 = ALL MODELS

VOLTAGE J = 115-1-60 K = 208/230-1-60

A = ALL MODELS

UNIT TYPE R = OUTDOOR

NOMINAL CAPACITY 09 - 3/4 TON 12 - 1 TON 18 - 1- 1/2 TONS 24 - 2 TONS 30 - 2- 1/2 TONS 36 - 3 TONS

Week of Manufacture

Year of Manufacture

Use of the AHRI Certified TM Mark indicates a manufacturer’s participation in the program For verification of certification for individual products, go to www.ahridirectory.org.

01 16 10001

1 = ALL MODELS

UNIT TYPE

J = 115-1-60

K = 208/230-1-60

Sequential Serial Number

V = ALL MODELS

2 328 080000 01

Specifications subject to change without notice.

Page 3

DIMENSIONS − INDOOR

Fig. 1 - Indoor Unit Dimensions

T able 1—DLFCAB / DLCCAR / DLFCHB / DLCCHR

SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K 36K

Voltage 115/1/60 115/1/60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

Height (H) in 11.4 11.4 11.4 11.4 11.8 12.8 12.8 12.8

Width (W) in 33.3 33.3 33.3 33.3 38.2 42.4 53.1 53.1 Depth (D) in 8.2 8.2 8.2 8.2 8.8 9.7 10 10

Weight-Net lbs 23.2 23.2 22.1 22.1 27.6 34.2 41.9 41.9

T able 2—DLFDAB / DLCDAR / DLFDHB / DLCDHR

SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K* 36K*

Voltage 115/1/60 115/1/60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

Height (H) in 10.8 11.4 10.8 11.4 11.8 12.8 12.8 12.8

Width (W) in 31.1 33.3 31.1 33.3 38.2 42.4 53.1 53.1 Depth (D) in 7.9 8.2 7.9 8.2 8.8 9.7 10 10

Weight-Net lbs 19.8 22.1 19.8 23.2 29.8 37.5 41.9 41.9

Fig. 2 - Indoor Mounting Plate

T able 3—DLFCAB / DLCCAR / DLFCHB / DLCCHR

SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K 36K

Voltage 115/1/60 115/1/60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

A in 4.7 4.7 4.7 4.7 4.0 8.1 13.8 13.8 B in 21.3 21.3 21.3 21.3 27.0 27.0 29.4 29.4 C in 7.3 7.3 7.3 7.3 7.2 7.3 10.0 10.0 D in 2.2 2.2 2.2 2.2 2.2 2.8 2.8 2.8 E in 1.4 1.4 1.4 1.4 1.5 1.7 1.6 1.6 F in 5.0 5.0 5.0 5.0 7.5 6.0 11.6 11.6 H in 3.3 3.3 3.3 3.3 5.5 3.1 3.5 3.5

T able 4—DLFDAB / DLCDAR / DLFDHB / DLCDHR

SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K* 36K*

Voltage 115/1/60 115/1/60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

A in 6.6 4.7 6.6 4.7 4.0 8.1 13.8 13.8 B in 18.2 21.3 18.2 21.3 27.0 27.0 29.4 29.4 C in 6.3 7.3 6.3 7.3 7.2 7.3 10.0 10.0 D in 2.2 2.2 2.2 2.2 2.2 2.8 2.8 2.8 E in 2.1 1.4 2.1 1.4 1.5 1.7 1.6 1.6 F in 6.0 5.0 6.0 5.0 7.5 6.0 11.6 11.6 H in 3.5 3.3 3.5 3.3 5.5 3.1 3.5 3.5

NOTE: * Sizes 30 and 36 not available as Cooling Only.

328 080000 01 3

Specifications subject to change without notice.

Page 4

DIMENSIONS − OUTDOOR

Fig. 3 - Outdoor Unit

T able 5—DLFCAB / DLCCAR / DLFCHB / DLCCHR

SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K 36K

Volt age 115/1/60 115/1/60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

Height (H) in 21.3 23.3 21.3 23.3 27.6 31.1 31.1 31.1

Width (W) in 33.4 33.4 33.4 33.4 37.6 38.6 38.6 38.6 Depth (D) in 12.6 12.6 12.6 12.6 15.6 16.8 16.8 16.8

M in 10.0 10.0 10.0 10.0 13.4 14.6 14.6 14.6 N in 30.0 30.0 30.0 30.0 35.0 36.2 36.2 36.2

P in 21.3 21.3 21.3 21.3 22.0 24.0 24.0 24.0

NET Weight Cooling Only lbs 62.8 73.9 72.8 80.5 113.6 147.7 152.1 154.4

NET Weight Heat Pump lbs 71.7 77.2 78.3 86 114.7 142.2 154.4 161

S in 11.3 11.3 11.3 11.3 14.3 15.6 15.6 15.6

T able 6—DLFDAB / DLCDAR / DLFDHB / DLCDHR

SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K* 36K*

Voltage 115/1/60 115/1/60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

Height (H) in 21.3 21.3 21.3 21.3 27.6 27.6

Width (W) in 30.6 30.6 30.6 30.6 37.6 37.6 Depth (D) in 12.6 12.6 12.6 12.6 15.6 15.6

M in 10.1 10.1 10.1 10.1 13.4 13.4 14.6 14.6 N in 28.0 28.0 28.0 28.0 35.0 35.0 36.2 36.2

P in 20.0 20.0 20.0 20.0 22.0 22.0 24.0 24.0

NET Weight Cooling Only lbs 59.5 63.9 66.2 70.6 90.4 103.6

NET Weight Heat Pump lbs 62.8 67.3 65.0 69.5 95.9 110.3 154.4 161.0

S in 11.3 11.3 11.3 11.3 14.3 14.3 15.6 15.6

NOTE: * Sizes 30 and 36 not available as Cooling Only.

4 328 080000 01

Specifications subject to change without notice.

Page 5

CLEARANCES − INDOOR

(0.13m)

min.

CEILING

6" (0.15m) min.

(1.8m)

FLOOR

Fig. 4 - Indoor Unit Clearance

(0.13m)

min.

CLEARANCES − OUTDOOR

UNIT

A 24 (609) B 24 (609) C 24 (609) D 4 (101) E 4 (101)

Air-inlet

Air-outlet

Fig. 5 - Outdoor Unit Clearance

T able 7—Outdoor Clearances

MINIMUM VALUE

in. (mm)

328 080000 01 5

Specifications subject to change without notice.

Page 6

WIRING

All wires must be sized per NEC (National Electrical Code) or CEC (Canadian Electrical Code) and local codes. Use the Electrical Data table MCA (minimum circuit amps) and MOCP (maximum over current protection) to correctly size the wires and the disconnect fuse or breakers respectively.

Per caution note, only Stranded copper conductors with a 600 volt rating and double insulated copper wire must be used.

NOTE: The use of BX cable is not recommended. Recommended Connection Method for Powe r and Comm unication

Wiring − P ower and Communication Wiring:

The main power is supplied to the outdoor unit. The field supplied 14/3 power/communication wiring from the outdoor unit to the indoor unit consists of four (4) wires and provides the power for the indoor unit. Two wires are high voltage AC power, one is communication wiring and the other is a ground wire.

Recommended Connection Method for Power and Communication Wiring (To minimize communication wiring interference)

PowerWiring:

The main power is supplied to the outdoor unit. The field supplied power wiring from the outdoor unit to the indoor unit consists of three (3) wires and provides the power for the indoor unit. Two wires are high voltage AC power and one is a ground wire. To minimize voltage drop, the factory recommended wire size is 14/2 stranded with a ground.

Communication Wiring:

A separate shielded stranded copper conductor only, with a minimum 600 volt rating and double insulated copper wire, must be used as the communication wire from the outdoor unit to the indoor unit. Please use a separate shielded 16GA stranded control wire.

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Wires should be sized based on NEC and local codes. Use copper conductors only with a 600 volt rating and

double insulated copper wire.

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

S Be sure to comply with local codes while running wire

from indoor unit to outdoor unit.

S Every wire must be connected firmly. Loose wiring may

cause terminal to overheat or result in unit malfunction. A fire hazard may also exist. Therefore, be sure all wiring is tightly connected.

S No wire should be allowed to touch refrigerant tubing,

compressor or any moving parts.

S Disconnecting means must be provided and shall be

located within sight and readily accessible from the air conditioner.

S Connecting cable with conduit shall be routed through

hole in the conduit panel.

CAUTION

Cooling

Only

Heat

Pump

Cooling

Only

Heat

Pump

T able 8—DLFCAB / DLCCAR / DLFCHB / DLCCHR

SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K 36K

V-Ph-Hz 115-1-60 208/230-1-60

Running Current (Cool) A 6.2 8.78 2.8 4.5 8.65 7.21 11.5 17 Power Consumption (Cool) W 700 990 630 1000 1950 1650 2700 4100 Minimum Circuit Ampacity (MCA) A 12 17 9 9 16 20 20 24 Maximum Overcurrent Protection Ampacity (MOPA) A 20 25 15 15 25 30 30 40 Running Current (Cool) A 6.2 8.78 2.8 4.5 8.65 8.05 11.5 17 Running Current (Heat) A 8.3 8.78 3.5 5.5 7.52 8.35 12 16.5 Power Consumption (Cool) W 700 990 630 1000 1950 1760 2700 4100 Power Consumption (Heat) W 930 990 1020 1100 1730 2000 2800 3800 Minimum Circuit Ampacity (MCA) A 12 17 9 9 16 20 20 24 Maximum Overcurrent Protection Ampacity (MOPA) A 20 25 15 15 25 30 30 40

T able 9—DLFDAB / DLCDAR / DLFDHB / DLCDHR

SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K HP 36K HP

V-Ph-Hz 115-1-60 208/230-1-60

Running Current (Cool) A 11 12.4 4 5.8 8 10.03 Power Consumption (Cool) W 823 1155 900 1300 1800 2260 Minimum Circuit Ampacity (MCA) A 17 20 9 9 16 15 Maximum Overcurrent Protection Ampacity (MOPA) A 25 30 15 15 25 25 Running Current (Cool) A 11 12.4 4 5.8 8.5 10.03 11.5 17 Running Current (Heat) A 10 13.5 3.6 5.6 8.9 10.2 12 16.5 Power Consumption (Cool) W 895 1193 900 1300 1980 2260 2700 4100 Power Consumption (Heat) W 853 1250 800 1250 2000 2300 2800 3800 Minimum Circuit Ampacity (MCA) A 17 20 9 9 16 16 20 24 Maximum Overcurrent Protection Ampacity (MOPA) A 25 30 15 15 25 25 30 40

6 328 080000 01

Specifications subject to change without notice.

Page 7

CONNECTION DIAGRAMS

Fig. 6 - Connection Diagram 9K & 12K Units 115V

Fig. 7 - Connection Diagram 9K & 12K Units 208/230V

Fig. 8 - Connection Diagram 18K − 36K Units 208/230V

328 080000 01 7

Specifications subject to change without notice.

Page 8

WIRING DIAGRAMS

T able 10—WIRING DIAGRAMS

SYMBOL

WH White GN Green CAP Jumper Cap

YE Yellow BN Brown COMP Compressor

RD Red BU Blue Grounding wire

YEGN Yellow/Green BK Black / /

VT Violet OG Orange / /

NOTE: Jumper cap is used to determine the fan speed and the swing angle of the horizontal louver of this model.

WIRING DIAGRAM − INDOOR UNIT − DLFCAB / DLFCHB

SYMBOL COLOR SYMBOL SYMBOL COLOR SYMBOL NAME

Fig. 9 - Indoor Unit Sizes 09 − 12 (115V − 208/230V)

8 328 080000 01

Specifications subject to change without notice.

Page 9

WIRING DIAGRAM INDOOR UNIT − DLFCAB/DLFCHB (CONT)

Fig. 10 - Indoor Unit Sizes 18 − 24 (208/230V)

328 080000 01 9

Fig. 11 - Indoor Unit Sizes 30 − 36 (208/230V)

Specifications subject to change without notice.

Page 10

WIRING DIAGRAM − OUTDOOR UNIT − DLCCAR / DLCCHR

Fig. 12 - Outdoor Unit Sizes 09 − 12 (115V)

Fig. 13 - Outdoor Unit Sizes 09 − 12 (208/230V)

10 328 080000 01

Specifications subject to change without notice.

Page 11

WIRING DIAGRAM − OUTDOOR UNIT − DLCCAR / DLCCHR (CONT)

Fig. 14 - Outdoor Unit Size 18 (208/230V)

328 080000 01 11

Fig. 15 - Outdoor Unit Size 24 (208/230V)

Specifications subject to change without notice.

Page 12

WIRING DIAGRAM − OUTDOOR UNIT − DLCCAR / DLCCHR (CONT)

Fig. 16 - Outdoor Unit Sizes 30 − 36 (208/230V)

WIRING DIAGRAM − INDOOR UNIT − DLFDAB / DLFDHB

Fig. 17 - Indoor Unit Sizes 09 − 12 (115V)

12 328 080000 01

Specifications subject to change without notice.

Page 13

WIRING DIAGRAM − INDOOR UNIT − DLFDAB / DLFDHB (CONT)

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328 080000 01 13

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Specifications subject to change without notice.

Page 14

WIRING DIAGRAM − OUTDOOR UNIT − DLCD

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14 328 080000 01

Specifications subject to change without notice.

Page 15

WIRING DIAGRAM − OUTDOOR UNIT − DLCD (CONT)

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328 080000 01 15

Fig. 23 - Outdoor Unit DLCDHR Sizes 9−12 (115 V)

Specifications subject to change without notice.

Page 16

WIRING DIAGRAM − OUTDOOR UNIT − DLCD (CONT)

:+%8 %.%1 *1<(*1

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Fig. 25 - Outdoor Unit DLCDHR Size 18−24 (208/230V)

16 328 080000 01

Specifications subject to change without notice.

Page 17

WIRING DIAGRAM − OUTDOOR UNIT − DLCD (CONT)

Fig. 26 - Outdoor Unit DLCDHR Size 30 (208/230V)

328 080000 01 17

Fig. 27 - Outdoor Unit DLCDHR Size 36 (208/230V)

Specifications subject to change without notice.

Page 18

PCB PRINTED DIAGRAMS

No. Description

1 This terminal is not used 2 Zero Line 3 Indoor Fan Motor 4 This jumper is not used 5 Jumper 6 Vertical Swing Motor 7 This terminal is not used 8 Horizontal swing motor

9 Temperature sensor 10 Wired controller 11 Display Board 12 This terminal is not used 13 Communication wire 14 Live Wire 15 Fuse 16 Capacitor for Indoor Fan Motor

T able 11—PCB Printed Diagrams

18 328 080000 01

Specifications subject to change without notice.

Page 19

PCB PRINTED DIAGRAMS (CONT)

891011

Fig. 28 - Indoor Units DLFCAB / DLFCHB Sizes 9 to 24 Top View

T able 12—Indoor Units DLFCAB / DLFCHB

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Neutral

Wire

DC fan

Up & Down

Swing

Left & Right

swing

Wired

Controller

Interface

Wired

Controller

Interface

Display

interface

Jumper

interface

Relay Relay Fuse Piezoresistance

Live Wire

Interface

Health

Function

Live Wire

Health

Function

Neutral

Wire

Relay

Fig. 29 - Indoor Units DLFCAB / DLFCHB Sizes 9 to 24 Bottom View

328 080000 01 19

Specifications subject to change without notice.

Page 20

PCB PRINTED DIAGRAMS (CONT)

17 18 19 20 21

2 2 2

3 3

Fig. 30 - Indoor Units DLFCAB / DLFCHB Sizes 30 and 36 Top View

T able 13—Indoor Units DLFCAB / DLFCHB

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 12

Power supply

live wire

Fuse

Neutral

wire for

health function interface

Power Supply Neutral

wire

Communication

interface

Power

Switch

High−

frequency

transformer

Fan

motor

interface

Buzzer

Display

Interface

Display

Interface

Indoor tube temperature

sensor

interface

Ambient

temperature

interface

Wired

Controlle r

Interface

Left &

Right

Swing

Termin al

Up & Down Swing

Termin al

Auto

Button

BMS

Interface

Jumper

Cap

Wired

Controlle r

Interface

Live Wire for

Health Function

Interface

Fig. 31 - Indoor Units DLFCAB / DLFCHB Sizes 30 and 36 Bottom View

20 328 080000 01

Specifications subject to change without notice.

Page 21

PCB PRINTED DIAGRAMS (CONT)

8910111213

GRJW819-A3 V1.2 2013/06/25/12

4321

Fig. 32 - Outdoor Units DLCCAR / DLCCHR 115V sizes 9 and 12 Top View

T able 14—Outdoor Units DLCCAR / DLCCHR

NO. NAME NO. NAME NO. NAME

1 Compressor output port 6 Power neutral wire port 11 AC fan motor port

2 Overload port 7 Live wire 12 DC fan motor port

3 Temperature sensor port 8 Compressor electric heating belt port 13 Electronic expansion valve port

4 Communication wire port 9 Compressor electric heating belt port / /

5 Earthing wire port 10 Port of AC fan motor / /

6 5

Fig. 33 - Outdoor Units DLCCAR / DLCCHR 115V sizes 9 and 12 Bottom View

328 080000 01 21

Specifications subject to change without notice.

Page 22

PCB PRINTED DIAGRAMS (CONT)

Fig. 34 - Outdoor Units DLCCAR / DLCCHR 208/230V sizes 9 and 12 Top View

T able 15—Outdoor Units DLCCAR / DLCCHR

1 Live wire input 4 Ground wire input 7

2 Neutral wire input 5 Electrical Heater wire 8

3 Communication interface 6 4-way valve neutral wire 9 4-way valve live wire 12 Electric reactor interface 2 15 Te m p. senso r

Electric heater

compressor neutral wire

Electric heater chassis

neutral wire

10 Fan in ter face 13

11 Electric reactor interface 1 14 Overload input

Compressor phases

U,V,W

Fig. 35 - Outdoor Units DLCCAR / DLCCHR 208/230V Sizes 9 and 12 Bottom View

22 328 080000 01

Specifications subject to change without notice.

Page 23

PCB PRINTED DIAGRAMS (CONT)

1234567

Fig. 36 - Outdoor Units DLCCAR / DLCCHR Size 18 Top View

T able 16—Outdoor Units DLCCAR / DLCCHR

1 2 3 4 5 6 7 8 9 10 11 12 13

Compressor

Wire Terminal

Outdoor heat

exchanger middle

copper pipe temperature

terminal

sensor

Compressor

overload

protection

terminal

Outdoor

temperature

sensor

terminal

Electronic Expansion

Valve Sensor

Outdoor Fan

Terminal

4-Way

Valve

Terminal

Indoor Unit

Communication

Wire

Power

Supply

Live

Wire

Earthing

Wire

Power

Supply

Neutral Wire

Induction

PFC

Wire

Chassis

Electric

Heater

terminal

Fig. 37 - Outdoor Units DLCCAR / DLCCHR Size 18 Bottom View

328 080000 01 23

Specifications subject to change without notice.

Page 24

PCB PRINTED DIAGRAMS (CONT)

234 5 6

Fig. 38 - Outdoor Units DLCCAR / DLCCHR Size 24 Top View

T able 17— Outdoor Units

1 Compressor interface

2 Compressor overload protector

3 Temperature sensor

4 Electric expansion valve

5 Outdoor fan

6 4-way valve

7 Indoor unit communication interface

8 Live wire

9 Earthing wire

10 Neutral wire

11 Reactor interface 2

12 Reactor interface 1

Fig. 39 - Outdoor Units DLCCAR / DLCCHR Size 18 Bottom View

24 328 080000 01

Specifications subject to change without notice.

Page 25

PCB PRINTED DIAGRAMS (CONT)

Fig. 40 - Outdoor Units DLCCAR / DLCCHR Sizes 30 and 36 Top View

T able 18—Outdoor Units DLCCAR / DLCCHR

No. NAME No. NAME No. NAME

1 High-frequency transformer T1 6 High pressure protection terminal HPP1 11 Terminal of neutral wire 2 Overload protection terminal of compressor OVC-COMP 7 Terminal of 4-way valve 12 Protective tube FU101 3 Terminal of temp sensor CN2 8 Electric heater band of chassis HEAT2-L 13 Terminal of ground wire 4 High pressure protection terminal HPP 9 Electric heater band of compressor HEAT1-L 14 Choke L 101 and L102 5 Electronic expan sion valve terminal EV 10 Terminal of live wire 15

Terminal of outdoor fan OFAN-DC

Fig. 41 - Outdoor Units DLCCAR / DLCCHR Sizes 30 and 36 Bottom View

328 080000 01 25

Specifications subject to change without notice.

Page 26

PCB PRINTED DIAGRAMS (CONT)

12 3 4

567

Fig. 42 - Indoor Units DLFDAB / DLFDHB Sizes 9 − 24 Top View

Fig. 43 - Indoor Units DLFDAB / DLFDHB Sizes 9 − 24 Bottom View

26 328 080000 01

Specifications subject to change without notice.

Page 27

PCB PRINTED DIAGRAMS (CONT)

Fig. 44 - Indoor Units DLFDHB Sizes 30 and 36 Top View

T able 19—Indoor Units DLFDAB / DLFDHB

No. NAME

1 Terminal of neutral wire

2 Auto button

3 Horizontal swing terminal

4 Vertical swing terminal

5 Communication terminal

6 Jumper cap

7 Ambient temperature sensor terminal

8 Pipe temperature sensor terminal

9 Display panel 1 and 2 terminals

10 Transformer Output Terminal

11 Live Wire Terminal

12 Protective tube

13 Transformer Input terminal

Fig. 45 - Indoor Units / DLFDHB Sizes 30 and 36 Bottom View

328 080000 01 27

Specifications subject to change without notice.

Page 28

PCB PRINTED DIAGRAMS (CONT)

678910

Fig. 46 - Outdoor Units DLCDAR / DLCDHR Sizes 9 and 12 Top View

Fig. 47 - Outdoor Units DLCDAR / DLCDHR Sizes 9 and 12 Bottom View

28 328 080000 01

Specifications subject to change without notice.

Page 29

PCB PRINTED DIAGRAMS (CONT)

123710

456 8 9 11

Fig. 48 - Outdoor Units DLCDAR / DLCDHR Sizes 18 and 24 Top View

Fig. 49 - Outdoor Units DLCDAR / DLCDHR Sizes 18 and 24 Bottom View

328 080000 01 29

Specifications subject to change without notice.

Page 30

PCB PRINTED DIAGRAMS (CONT)

Fig. 50 - Outdoor Units DLCDHR Sizes 30 and 36 Top View

T able 20—Outdoor Units DLCDHR Sizes 30 and 36

No. Name No. Name No. Name

1 High−frequency transformer T1 5 Terminal of 4−way valve 9 Protective tube FU101 2 Terminal of overload protection 6 Communication terminal 10 Terminal of ground wire 3 Terminal of temperature sensor 7 Terminal of live wire 11 Choke L 101 and L 102 4 Terminal of high pressure protection 8 Terminal of neutral wire 12 Terminal of outdoor fan OFAN−DC

Fig. 51 - Outdoor Units DLCDHR Sizes 30 and 36 Bottom View

30 328 080000 01

Specifications subject to change without notice.

Page 31

REFRIGERATION DIAGRAMS

Indoor unit

Heat exchanger (evaporator)

Outdoor unit

Gas pipe side

Valve

Discharge

Suction

Compressor

Liquid pipe side

Valve

Fig. 52 - Refrigeration System Diagrams

Strainer

Accumlator

Electron expansion valve

4-Way valve

Heat exchanger (condenser)

Capillary

Strainer

COOLING

HEATING

Indoor unit

Heat exchanger (evaporator)

Outdoor unit

Gas pipe side

Valve

Discharge

Suction

Compressor

Liquid pipe side

Valve

Fig. 53 - Refrigeration System Diagrams

Strainer

Accumlator

Electron expansion valve

4-Way valve

Heat exchanger (condenser)

Strainer

COOLING

HEATING

328 080000 01 31

Specifications subject to change without notice.

Page 32

REFRIGERANT LINES

General refrigerant line sizing:

1. The units are shipped with a full charge of R410A refrigerant. All charges, line sizing, and cap acities are based on runs of 25 ft. (7.6 m). For runs ov er 25 ft. (7.6 m), review the Long−Line

4. Both lines must be insulated. Use a minimum of 1/2−in. (12.7 mm) thick insulation. A closed−cell insulation is recommended in all long−line applications.

5. Special consideration should be given to isolating interconnecting tubing from the building structure. Isolate the tubing so that vibration or noise is not transmitted i nto th e structure.

Applications Units section on the following page for proper charge adjustments.

2. Minimum refrigerant line length between the indoor and outdoor units is 10 ft. (3 m).

IMPORTANT: Both refrigerant lines m ust be insulated sep arately.

S The following maximum lengths are allowed:

3. Refrigerant lines should not be buried in the ground. If it is necessary to bury the lines, not more than 36−in (914 mm) should be buried. Provide a minimum 6−in (152 mm) vertical rise to the service valves to prevent refrigerant migration.

T able 21—Piping Information DLFCAB / DLCCAR / DLFCHB / DLCCHR

SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K 36K

Voltage 115/1/60 115/1/60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

Min. Piping Length

Standard Piping

Length

Max. Outdoor-

Indoor Height

Difference

Max. Piping

Length w/ No

Additional

Refrigerant

Charge

Max. Piping

Length

Gas Pipe (size connection type)

Liquid Pipe (size

- connection type)

ft 10 10 10 10 10 10 10 10

m 3 3 3 3 3 3 3 3

ft 25 25 25 25 25 25 25 25

m 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5

ft 32.8 32.8 32.8 32.8 32.8 32.8 32.8 32.8

m 10 10 10 10 10 10 10 10

ft 25 25 25 25 25 25 25 25

m 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5

ft 49.2 65.6 49.2 65.6 82 82 98.4 98.4

m 15 20 15 20 25 25 30 30

in 3/8 1/2 3/8 1/2 5/8 5/8 5/8 5/8

in 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4

T able 22—Refrigerant Information DLFCAB / DLCCAR / DLFCHB / DLCCHR

SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K 36K

Voltage 115/1/60 115/1/60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

Cooling

Only

Heat

Pump

Refrigerant Type -- R410A R410A R410A R410A R410A R410A R410A R410A

Charge Amount

Additional

Refrigerant

Charge

(between

Standard – Max

Piping Length)

Refrigerant Type -- R410A R410A R410A R410A R410A R410A R410A R410A

Charge Amount

Additional

Refrigerant

Charge

(between

Standard – Max

Piping Length)

Oz 42.3 47.6 45.9 47.6 56.4 81.1 84.66 84.7 Kg 1.2 1.35 1.3 1.35 1.6 2.3 2.4 2.4

Oz/ft 0.161 0.161 0.161 0.161 0.161 0.161 0.161 0.16

g/m 15 15 15 15 15 15 15 15

Oz 42.3 47.6 45.9 47.6 56.4 77.6 84.66 91.7 kg 1.2 1.35 1.3 1.35 1.6 2.2 2.4 2.6

Oz/ft 0.215 0.215 0.215 0.215 0.161 0.538 0.538 0.54

g/m 20 20 20 20 15 50 50 50

32 328 080000 01

Specifications subject to change without notice.

Page 33

SYSTEM EVACUATION AND

CHARGING

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Never use the system compressor as a vacuum pump.

Refrigerant tubes and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns. The alternate triple evacuation method may be used if the procedure outlined below is followed. Always break a vacuum with dry nitrogen.

System Vacuum and Charge

Using Vacuum Pump

1. Completely tighten flare nuts A, B, C, D, connect the manifold gage charge hose to a charge port of the low side service valve (see Fig. 54).

2. Connect the charge hose to the vacuum pump.

3. Fully open the low side of the manifold gage (see Fig. 55).

4. Start the vacuum pump.

5. Evacuate using either the deep vacuum or triple evacuation method.

6. After the evacuation is complete, fully close the low side of manifold gage and stop the vacuum pump operation.

7. The factory charge, contained in the outdoor unit, is good for up to 25 ft. (8 m) of line length. For refrigerant lines longer than 25 ft. (8 m), add refrigerant as specified in the ADDITIONAL REFRIGERANT CHARGE TABLE (see Table NO T AG).

8. Disconnect the charge hose from the charge connection of the low side service valve.

9. Fully open service valves B and A.

10. Securely tighten the service valves caps.

Outdoor Unit

Service Valve

500 microns

Low side valve

Charge hose

CAUTION

Refrigerant

Low Side

High Side

Fig. 54 - Service Valve

Manifold Gage

High side valve

Charge hose

Vacuum pump

Indoor Uni

Deep Vacuum Method

The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth. The deep vacuum method is the best way to ensure a system is free of air and liquid water (see Fig. 56).

5000 4500 4000 3500 3000 2500 2000

MICRONS

1500 1000

500

01234567

MINUTES

LEAK IN SYSTEM

V ACUUM TIGHT TOO WET

TIGHT DRY SYSTEM

Fig. 56 - Deep Vacuum Graph

Triple Evacuation Method

The triple evacuation process should be used in accordance with Fig.

57. Refer to Fig. 57 and proceed as follows:

1. Pump system down to 500 microns and allow the pump to continue operating for an additional 15 minutes.

2. Close the service valves and shut off the vacuum pump.

3. Connect a nitrogen cylinder and regulator to the system and open until the system pressure is 2 psig.

4. Close the service valve and allow the system to stand for 1 hr. During this time, dry nitrogen will be able to diffuse throughout the system absorbing moisture.

5. Repeat this procedure as indicated in Fig. 57. The system is freed of any contaminants and water vapor.

EVACUATE

BREAK VACUUM WITH DRY NITROGEN

WAIT

EVACUATE

BREAK VACUUM WITH DRY NITROGEN

WAIT

EVACUATE

CHECK FOR TIGHT, DRY SYSTEM

(IF IT HOLDS DEEP VACUUM)

RELEASE CHARGE INTO SYSTEM

Fig. 57 - Triple Evacuation Method

Final Tubing Check IMPORTANT: Ensure the factory tubing on both the indoor and

outdoor units has not shifted during shipment. Ensure the tubes are not rubbing against each other or any sheet metal. Pay close attention to the feeder tubes. Ensure the wire ties on the feeder tubes are secure and tight.

Low side valve

Fig. 55 - Manifold

328 080000 01 33

Specifications subject to change without notice.

Page 34

BRIEF DESCRIPTION OF MODES AND FUNCTIONS

INDOOR UNIT

Basic System Functions Cooling Mode

1. Under this mode, the fan and swing operate at the setting status. The temperature setting range is 60.8~86.0_F.

2. During a malfunction of the outdoor unit or if the unit stops because of protection, the indoor unit keeps the original operation status.

Drying Mode

1. Under this mode, the fan operates at a low speed and the swing function operates at the setting status. The temperature setting range is 60.8~86.0_F.

2. During a outdoor unit malfunction or if the unit’s protection mode stops the outdoor unit, the indoor unit retains the original operation status.

3. The protection status is the same as that under the Cooling mode.

4. The Sleep function is not available in the Drying mode.

Heating Mode

1. Under the Heating mode, the temperature setting range is

60.8~86.0_F.

2. The working condition and process for the heating mode: When the unit is turned on under the Heating mode, the indoor unit enters the cold air prevention status. When the unit is stopped or in the OFF status, and the indoor unit has been started up recently, the unit enters the residual heat−blowing status.

Working method for AUTO mode

1. Working condition and process for AUTO mode:

a. Under the AUTO mode, the standard heating Tpreset = 68.0_F

and the standard cooling Tpreset = 77.0_F. The unit switches modes automatically according to the ambient temperature.

2. Protection function

a. During the cooling operation, the protection function is the same

as that under the Cooling mode.

b. During the heating operation, the protection function is the same

as that under the Heating mode.

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

4. If the unit is equipped with the I FEEL function, Tcompensation is 0 and the others are the same as follows.

5. Fan mode − Under this mode, the indoor fan operates at the set fan speed. The compressor, outdoor fan, 4−way valve and the electric heating tube stop operating. The user can select the indoor fan to operate at either the high, medium, low or auto fan speeds. The temperature setting range is 60.8~86.0_F.

Other Controls

1. Buzzer − Upon energization, before operating the unit or remote controller, the buzzer emits a beep.

2. AUTO − If the user presses AUTO when turning off the unit, the entire unit operates in the AUTO mode. The indoor fan operates at the auto fan speed and the Swing function turns on. Press AUTO during the ON status to turn off the unit.

3. Auto fan − ( He ating mode) During the Auto Heating mode or the normal Heating mode, the auto fan speed adjusts the fan speed automatically according to the ambient temperature and the set temperature.

4. Sleep − After setting the sleep function for a period of time, the system adjusts the set temperature automatically.

5. Timer function − The general timer and clock timer functions are compatible by equipping the remote controller with different functions.

6. Memory function (memorize compensation temperature, off−peak energization value) − (Memory content) mode, up and down swing, light, set temperature, set fan speed, general timer (clock timer cannot be memorized). After a power recovery, the unit turns on automatically according to the memory content.

7. Health function − During the indoor fan operation, set the Health function with the remote controller. Turning of f the unit also turns off the Health function. Turn on the unit by setting the Auto and the Health function defaults to ON.

SEQUENCE OF OPERATION

Interface

A wireless remote control, supplied with the unit, is the interface between the fan coil and the user. The wireless remote control has the following characteristics:

S Capable of displaying _C and _F with _F acting as the default setting.

To change the default setting, refer to the Owner’s Manual.

S The remote control set point range is from 62_F (17_C) to 86_F

(30_C) in increments of 1_F (1_C).

S The wireless remote control has an operating range of 25 ft. (7.62 m). S The same remote control can be used to control more than one unit. S If the remote control is lost, damaged, or the batteries are exhausted,

the system can be operated by using MANUAL (forced Auto) located under the front panel.

Manual Button

AUTO/COOL

Fig. 58 - Manual (Location on Unit)

Vacuum Pumping and Leak Detection

Use Vacuum Pump

1. Remove the valve caps on the liquid valve and the gas valve and the nut of the refrigerant charging vent.

2. Connect the charging hose of the manifold to the refrigerant charging vent of the gas valve and then connect the other charging hose to the vacuum pump.

3. Open the manifold completely and operate for 10−15 min. to check if the pressure of the piezometer remains in 500 microns.

4. Close the vacuum pump and maintain this status for 1−2 min. to check if the pressure of the piezometer remains in 500 microns. If the pressure decreases, there may be a leak.

5. Remove the manifold, open the valve of the liquid valve and the gas valve completely.

6. Tighten the valves screw caps and the refrigerant charging vent (see Fig. 59).

34 328 080000 01

Specifications subject to change without notice.

Page 35

Liquid valve

Gas valve

Refrigerant charging vent

Nut of refrigerant

Charging vent

Inner hexagon spanner

Piezometer

Valve cap

Vacuum pump

Open

Lo Hi

Fig. 59 - Tighten the screw caps

Leakage Detection

1. With a leakage detector: c. Check for leaks.

2. With soap water: a. If a leakage detector is not available, use soap water for leakage

detection. Apply the soap water at the suspected position and let sit for more than 3 min. If air bubbles emit from this position, there is a leak.

I Feel Control Mode

After the controller receives an I FEEL signal and the ambient temperature sent by the remote controller, the controller works according to the ambient temperature sent by the remote controller.

Compulsory Defrosting Function

1. Start up compulsory defrosting function − Under the ON status,

set the heating mode with the remote controller and adjust the temperature to 60.8_F. Press “+, −, +, −, +,−” successively within 5s and the complete unit enters the compulsory defrosting status. Meanwhile the heating indicator on the indoor unit turns on for 10s and then off for 0.5s successively.

NOTE: If the entire unit malfunctions or stops operating due to the protection function, the compulsory defrosting function can be started after the malfunction or protection resumes.

2. Exit compulsory Defrosting Mode − After the compulsory

defrosting starts up, the entire unit exits the defrosting operation according to the actual defrosting result, and the entire unit resumes the normal heating operation.

Refrigerant Recovery Function:

1. Enter Refrigerant Recycling Function − Within 5 minutes after

energizing (unit ON or OFF status is ok), press LIGHT 3 times within 3s to enter the Refrigerant Recycling mode. The Fo indicator appears and the Refrigerant Recycling function starts. At this moment, an authorized service technician closes the liquid valve. After 5 minutes, stick the thimble of the maintenance valve with a tool. If there is no refrigerant spraying out, close the gas valve immediately and turn off the unit to remove the connection pipe.

2. Exit Refrigerant Recycling Function − After entering the

Refrigerant Recycling mode, if the unit receives any remote control signal or enters the Refrigerant Recycling mode for 25 minutes, the unit exits the Refrigerant Recycling mode automatically. If the unit is in the standby mode before refrigerant recycling, it remains in the standby mode after Refrigerant Recycling is complete. If the unit is in the ON status before the refrigerant recycle, it will still run in the original operation mode.

Ambient Temperature Display Control Mode:

1. When the user sets the remote controller to display the set temperature (corresponding remote control code: 01), the current set temperature appears.

2. Only when the remote control signal is switched to the indoor ambient temperature display status (corresponding remote control code: 10) from the other display status (corresponding remote control code: 00, 01,11), the controller displays the indoor ambient temperature for 3s and then turns back to display the set temperature. Under this mode, the indoor fan operates at a set fan speed. The compressor, outdoor fan, 4−way valve and electric heating tube stop operating. Users can select the indoor fan to operate at either the high, medium, low or auto fan speeds. The temperature setting range is 60.8−86.0OF.

Off−Peak Energization Function:

Adjust the compressor’s minimum stop time. The original minimum stop time is 180s. The time interval between the compressor’s two start−up times can not be less than 180+T s(0 T 15).

IMPORTANT: T is a controller variable.

The compressor minimum stop time is 180s−195s. Read−in T into the memory chip every time the user refurbishes the memory chip. After a power recovery, the compressor can only start after 180+T s at least.

SE Control Mode

The unit operates at SE status.

X−Fan Mode

When the X−fan function is turned on, after turning off the unit, the indoor fan still operates at a low speed for 2 minutes. Afterwards, the entire unit turns off. When the X−Fan mode is turned off, after turning off the unit, the entire unit turns off directly.

8º Heating Function

Under the Heating mode, you can set an 8_ heating function with the remote controller. The system operates at the 8_set temperature.

Turbo Fan Control Function

Set the Turbo function under the Cooling or Heating mode to engage the turbo fan speed. Press FAN SPEED to cancel the turbo wind function.

NOTE: There is no turbo function under the Auto, Dry or Fan modes. Auto-Restart Function

The indoor unit is equipped with an Auto-Restart function, which is carried out through the auto-restart module. In case of a sudden power failure, the module memorizes the setting conditions prior to the power failure. The unit automatically resumes the previous operation settings (not including the swing function) 3 minutes after the power returns.

If the memorization condition is the Forced Cooling mode, the unit runs in the Cooling mode for 30 minutes and returns to Auto mode at a 75_F (24_C) set temperature. If the equipment was off before the power went off, and it is required to start up after this power failure, the compressor will have a 1 minute delay when powering on. In other conditions, the compressor will have a 3 minutes delay at re-start.

328 080000 01 35

Specifications subject to change without notice.

Page 36

TROUBLESHOOTING

This section provides the required flow charts to troubleshoot problems that may arise.

NOTE: Information required in the diagnoses can be found either on the wiring diagrams or in the appendix.

Required Tools:

The following tools are needed when diagnosing the units:

S Digital multimeter S Screw drivers (Phillips and straight head) S Needle−nose pliers

Recommended Steps

1. Refer to the diagnostic hierarchy charts below and determine the problem at hand.

2. Go to the chart listed in the diagnostic hierarchy and follow the steps in the chart for the selected problem.

For the ease of service, the systems are equipped with diagnostic code display LEDs on both the indoor and outdoor units. The outdoor diagnostic display is on the outdoor unit board and is limited to very few errors. The indoor diagnostic display is a combination of flashing LEDs on the display panel on the front of the unit. If possible always check the diagnostic codes displayed on the indoor unit first.

Problems may occur that are not covered by a diagnostic code, however are covered by the diagnostic flow charts. These problems are typical air conditioning mechanical or electrical issues that can be corrected using standard air conditioning repair techniques.

For problems requiring measurements at the control boards note the following:

1. Always disconnect the main power.

2. When possible check the outdoor board first.

3. Start by removing the outdoor unit top cover.

4. Reconnect the main power.

5. Probe the outdoor board inputs and outputs with a digital multi−meter referring to the wiring diagrams.

6. Connect the red probe to the hot signal and the black probe to the ground or negative.

7. Note that some of the DC voltage signals are pulse and give continuously variable readings.

8. If it is necessary to check the indoor unit board you must start by disconnecting the main power.

9. Remove the front cover of the unit and then the control box cover.

10. Carefully remove the indoor board from the control box, place it face up on a plastic surface. Ensure the surface is not metal.

11. Reconnect the main power and repeat steps 5., 6., and 7..

12. Disconnect the main power before reinstalling the board to avoid a shock hazard and board damage.

36 328 080000 01

Specifications subject to change without notice.

Page 37

TROUBLESHOOTING

MALFUNCTION

NO.

11 Gathering refrigerant Fo

NAME

High pressure

protection of system

Anti-freeze

protection

In defect of

refrigerant

High discharge

temperature protection of

compressor

Overcurrent

protection

Communication

Malfunction

High temperature

resistant

protection

EEPROM

malfunction

Limit/ decrease

frequency due to

high temperature of

module

Malfunction

protection of

jumper cap

Indoor ambient

temperature sensor

is open/short

circuited

Indoor evaporator

temperature sensor

is open/short

circuited

Outdoor ambient

temperature sensor

is open/short

circuited

Outdoor condenser temperature sensor

is open/short

circuited

Outdoor discharge

temperature sensor

is open/short

circuited

Limit/ decrease

frequency due to

overload

Decrease frequency

due to overcurrent

Dual-8

Code

Display

T able 23—Flashing LED of Indoor/Outdoor Unit and Primary Judgment

Display Method of Indoor Unit

Indicator Display (during

blinking, ON 0.5s and OFF 0.5s)

Operation

Indicator

OFF 3s:

blinks once

OFF 3S:

blinks twice

OFF 3S:

blinks

4 times

OFF 3S:

blinks

5 times

OFF 3S:

blinks

6 times

OFF 3S:

blinks

8 times

OFF 3S:

blink15 times

OFF 3S:

blinks 1 time

Cool

Indicator

OFF 3S:

blinks 6

times

OFF 3S:

blinks 1

time

OFF 3S:

blinks once

OFF 3S:

blinks twice

OFF 3S:

blinks 3

times

OFF 3S:

blinks 4

times

OFF 3S:

blinks 5

times

OFF 3S:

blinks for 6

times

OFF 3S:

blink 8

times

Heating

Indicator

OFF 3S:

blinks 15

times

OFF 3S:

blinks 6

times

Display Method of

Outdoor Unit

Indicator has 3 kinds of display

status and during blinking, ON

0.5s and OFF 0. 5s

Yellow

Indicator

OFF 1S:

blinks

3 times

OFF 1S:

blinks

7 times

OFF 1S:

blinks

5 times

Always ON

OFF 1S:

blinks

6 times

OFF 1S:

blinks

11 times

OFF 1S:

blinks 17

times

Red

Indicator

OFF 1S:

blinks

9 times

OFF 1S:

blinks 6

times

OFF 1S:

blinks 5

times

OFF 1S:

blinks 7

times

OFF 1S:

blinks 3

times

OFF 1S: blinks once

Green

Indicator

AC STATUS POSSIBLE CAUSES

During the cooling and drying operation, all loads stop operating except the indoor fan. During the heating operation, the entire unit stops.

During the cooling and drying operation, the compressor and outdoor fan stop while the indoor fan operates.

The Dual-8 Code screen displays the F0 code and the entire unit stops.

During the cooling and drying operation, the compressor and outdoor fan stop while the indoor fan operates. During the heating operation, all loads stop.

During the cooling operation, the compressor stops while the indoor fan motor operates. During the heating operation, the entire unit stops.

During the cooling operation: the compressor stops while the indoor fan operates. During the heating operation, the entire unit stops.

All loads operate normally, while the operation frequency for the compressor decreases.

Wireless remote receiver and button are effective, however can not transmit the related command

When the outdoor unit receives a signal for gathering refrigerant ,the system is forced to run under the cooling mode to gather refrigerant

During cooling and drying operation, the indoor unit operates while other loads stop; during the heating operation, the entire unit stops operating.

AC stops operating once it reaches the setting temperature. Cooling, drying: internal fan motor stop operating while the other loads stop operating. Heating and air conditioner stop operating.

During the cooling and drying operating, compressor stops while indoor fan operates; During the heating operation, the entire unit leading to a short circuit stops operating.

During the cooling and drying operation, the compressor stops after operating for about 3 mins, while indoor fan still operates. During the heating operation, the entire unit stops after operating for about 3 mins.

All loads operate normally, while the operation frequency for the compressor decreases.

Possible reasons:

1.Refrigerant is superabundant;

2.Poor heat exchange (including a bad

radiating environment ); the ambient temperature is too high.

1.Poor air-return in indoor unit;

2.Fan speed is abnormal;

3.Evaporator is dirty.

1.No refrigerant;

2.Indoor evaporator temperature sensor has failed;

3.The unit has been plugged up somewhere.

Refer to the malfunction analysis (discharge protection, overload).

1.Supply voltage is unstable;

2.Supply voltage is too low and the load is

too high;

3.Evaporator is dirty.

Refer to the corresponding malfunction analysis.

Refer to the malfunction analysis (overload, high temperature resistant).

Replace outdoor control panel AP1

Discharging after the complete unit is de-energized for 20mins, check whether thermal grease on the IPM Module of outdoor control (in the radiator) is inserted tightly. If its not, replace the control panel AP1.

1.No jumper cap insert on ma inboar d.

2.Incorrect insert of jumper cap.

3.Jumper cap damaged.

4.Abnormal detecting circuit of mainboard.

Nominal cooling mode

1.Loosening or a bad contact on the indoor

ambient temp. sensor and mainboard terminal.

2.Components in the mainbo ard fell down

leading to a short circuit.

3.Indoor ambient temp. sensor is damaged

(check the sensor resist ance value cha rt).

4.Mainboard damaged.

1.Loosening or a bad contact on the indoor

ambient temp. sensor and mainboard terminal.

2.Components on the mainboard fall

down leading to a short circuit.

3.Indoor evaporator temp. sensor damaged

(check temp. senso r value chart for testing).

4.Mainboard damaged.

Outdoor temperature sensor has not been connected well or is damaged. Check it by referring to the resistance table for temperature sensor.

1.Outdoor temperature sensor has not been connected well or is damaged. Check it by referring to the resistance table for temperature sensor

2.The temperature sensor head has not been inserted into the copper tube.

Refer to the malfunction analysis (overload, high temperature resistant)

The input supply voltage is too low. System pressure is too high and ove rloads.

328 080000 01 37

Specifications subject to change without notice.

Page 38

TROUBLESHOOTING (CONT)

Display Method of Indoor Unit

MALFUNCTION

NO.

frequency due to

high air discharge

Limit/ decrease

frequency due to

anti-freeze

Volta ge for DC

bus-bar is too high

Volta ge of DC

bus-bar is too low

Compressor Min

frequency in te st

Compressor rate d

frequency in te st

Compressor

maximum frequency

in test state

Compressor intermediate

frequency in te st

Overcurrent

protection of phase

compressor

malfunction of

Malfunction of

module temperature

sensor circuit

Module high temperature

Decrease frequency

due to high

temperature

resistant during

heating operation

Static de-dusting

Overload protection

for compressor

NAME

Decrease

state

current for

Charging

capacitor

protection

Dual-8

Code

Display

Indicator Display (during

blinking, ON 0.5s and OFF 0.5s)

Operation

Indicator

Cool

Indicator

OFF 3S:

blinks

9 times

OFF 3S:

blinks 2

times

OFF 3S: blinks 11

times

during

blinking,

ON 0.25s

and OFF

0.25s

during

blinking,

ON 0.25s

and OFF

0.25s

during

blinking,

ON 0.25s

and OFF

0.25s

during

blinking, ON 0.25s and OFF

0.25s

OFF 3S:

blinks

15 times

Heating

Indicator

OFF 3S:

blinks 2

times

OFF 3S: blinks 21

times

during

blinking,

ON 0.25s

and OFF

0.25s

during

blinking,

ON 0.25s

and OFF

0.25s

during

blinking,

ON 0.25s

and OFF

0.25s

during

blinking,

ON 0.25s

and OFF

0.25s

OFF 3S: blinks 17

times

OFF 3S: blinks 18

times

OFF 3S:

blinks19

times

OFF 3S:

blinks

10 times

OFF 3S

blinks

twice

OFF 3S:

blink

3 times

Display Method of

Outdoor Unit

Indicator has 3 kinds of display

status and during blinking, ON

0.5s and OFF 0. 5s

Yellow

Indicator

OFF 1S:

Blinks 13

times

OFF 1S:

blinks 12

times

OFF 1S:

blinks

8 times

Red

Indicator

OFF 1S:

blinks twice

OFF 1S

and blink

4 times

Green

Indicator

AC STATUS POSSIBLE CAUSES

All loads operate normally, while the operation frequency for the compressor decreases.

All loads operate normally, while the operation frequency for the compressor is decreases.

During the cooling and drying operation, the compressor stops while the indoor fan operates. During the heating operation, the entire unit stops.

During the cooling and drying operation, compressor stops while the indoor fan operates. During the heating operation, the entire unit stops.

During the cooling and drying operation, the compressor stops while the indoor fan operates. During the heating operation, the entire unit stops

the operation. During the cooling and drying

operation, the compressor stops while the indoor fan operates. During the heating operation, the entire unit stops the operation.

During the cooling and drying operation, the compressor stops while the indoor fan operates. During the heating operation, the entire unit stops the operation.

During the cooling operation, the compressor stops while the indoor fan operates. During the heating operation, the entire unit stops.

All loads operate normally, while the operation frequency for the compressor is decreases.

During the cooling and drying operation, the compressor stops while indoor fan operates. During the heating operation, the entire unit stops operating.

Overload or temperature is too high; Malfunctio n of the electric expansion valve (EKV)

Poor air-return in indoor unit or fan speed is too low

1. Measure the voltage of position L and N on wiring board (XT), if the voltage is higher than 265VAC, turn on the unit after the supply voltage is increased to the normal range.

2.If the AC input is normal, measure the voltage of electrolytic capacitor C on the control panel (AP1), if its normal, there is a malfunction on the circuit. Replace the control panel (AP1)

1. Measure the voltage of position L and N on wiring board (XT), if the voltage is higher than 150VAC, turn on the unit after the supply voltage is increased to the normal range.

2.If the AC input is normal, measure the voltage of electrolytic capacitor C on control panel (AP1), if its normal, there is a malfunction for the circuit, replace the control panel (AP1)

Shows during minimum cooling or minimum. heating test

Showing during nominal cooling or nominal heating test

Showing during max. cooling or max. heating test

Showing during middle cooling or middle heating test

Refer to the malfunction analysis (IPM protection, loss of synchronism protection and overcurrent protection of phase current for compressor.

Refer to the part three—charging malfunct ion analysis of capacitor

Replace outdoor control panel AP1

After the complete unit is de-energized for 20mins, check whether the thermal grease on the IPM Module of outdoor control panel radiator is inserted tightly. If its not, replace

the control panel AP1.

Refer to the malfunction analysis (overload, high temperature resistant)

1. Wiring terminal OVC-COMP is loosened. Normally the resistance for this terminal should be less than 1ohm.

2.Refer to the malfunction analysis (discharge protection, overload)

38 328 080000 01

Specifications subject to change without notice.

Page 39

TROUBLESHOOTING (CONT)

Display Method of Indoor Unit

MALFUNCTION

NO.

35 IPM protection H5

39 PFC protection HC

41 Power Protection L9

43 Failur e start- up LC

NAME

System is abnormal

Module

temperature is too

high

Internal motor (fan

motor) do not

operate

Desynchronizing

of compressor

Outdoor DC fan

motor malfunction

Indoor unit and

outdoor unit

doesn't match

Dual-8

Code

Display

Indicator Display (during

blinking, ON 0.5s and OFF 0.5s)

Operation

Indicator

OFF 3S:

blinks

11 times

OFF 3S: blinks 23

times

OFF 3S:

blinks

20 times

OFF 3S:

blinks

19 times

Cool

Indicator

Heating

Indicator

OFF 3S:

blinks 4

times

OFF 3S:

blinks

5 times

OFF 3S:

blinks

5 times

OFF 3S:

blinks

7 times

OFF 3S:

blinks

6 times

OFF 3S:

blinks

11 times

Display Method of

Outdoor Unit

Indicator has 3 kinds of display

status and during blinking, ON

0.5s and OFF 0.5s

Yellow

Indicator

OFF 1S:

blinks

6 times

OFF 1S:

blinks

4 times

OFF 1S:

blinks

10 times

OFF 1S:

blink

14 times

OFF 1S:

blinks

9 times

OFF 1S:

blinks

16 times

Red

Indicator

OFF 1S:

blinks

14 times

Green

Indicator

AC STATUS POSSIBLE CAUSES

During the cooling and drying operation, the compressor stops while the indoor fan operates. During the heating operation, the unit stops operating.

During the cooling and drying operation, the compressor stops while indoor fan will operates. During the heating operation, the entire unit stops operating.

The internal fan motor, external fan motor, compressor and electric heater stop operating. The guide louver stops.

During the cooling and drying operation, the compressor stops while the indoor fan operates. During the heating operation, the entire unit stops operating. During the cooling and drying operation, the compressor stops while the indoor fan operates. During the heating operation, the complete unit stops operating.

Outdoor DC fan motor malfunction leads to a compressor malfunction

Compressor stop operation and outdoor fan motor stop 30s later, 3 minutes later the fan motor and compressor restarts

Compressor and outdoor fan motor do not work

During the cooling and drying operation, the compressor stops while the indoor fan operates. During the heating operation, the entire unit stops operating.

Refer to the malfunction analysis (overload, high temperature resistant)

Refer to the malfunction analysis (IPM protection, loss of synchronism protection and overcurrent protection of the compressor's phase current.

1.Bad contact of the DC motor feedback

terminal.

2.Bad contact of the DC motor control

end.

3.Fan motor is stalling.

4.Motor malfunction.

5.Malfunction of the mainboard rev

detecting circuit. Refer to the malfunction analysis (IPM protection, loss of synchronism protection and overcurrent protection of phase current for compressor.

Refer to the malfunction analysis

DC fan motor malfunction or system blocked or the connector loosed

To protect the electrical components when detect high power

Indoor unit and outdoor unit does not match

Refer to the malfunction analysis

328 080000 01 39

Specifications subject to change without notice.

Page 40

TROUBLESHOOTING (CONT)

Display Method of Indoor Unit

MALFUNCTION

NO.

54 Defrosting

NAME

Malfunction of

phase current

detection circuit for

compressor

Malfunction of

voltage dropping

for DC bus-bar

Malfunction of complete units

current detection

The four-way

valve is abnormal

Zero-

crossing

malfunction of

outdoor unit

Frequency limiting

(power)

Compressor

running

The temperature

for turning on the

unit is reached

Frequency limiting

(module

temperature)

Normal

communication

Dual-8

Code

Display

Indicator Display (during

blinking, ON 0.5s and OFF 0.5s)

Operation

Indicator

OFF 3S:

blinks

18 times

Cool

Indicator

OFF 3S

blinks

13 times

OFF 3S:

blinks

20 times

Heating

Indicator

OFF 3S:

blinks

13 times

OFF 3S:

blinks

20 times

OFF 3S

and blink

once

(during

blinking,

ON 10s

and OFF

0.5s)

Display Method of

Outdoor Unit

Indicator has 3 kinds of display

status and during blinking, ON

0.5s and OFF 0.5s

Yellow

Indicator

OFF 1S:

blinks

once

OFF 1S

and blink

twice

Red

Indicator

OFF 1S:

and blink

13 times

OFF 1S:

blinks

8 times

OFF 1S:

blinks

11 times

Green

Indicator

OFF 0.5S and blink

once

AC STATUS POSSIBLE CAUSES

During the cooling and drying operation, the compressor stops while the indoor fan operates. During the heating operation, the unit stops During the cooling and drying operation, the compressor stops while the indoor fan operates. During the heating operation, the unit stops

During the cooling and drying operation, the compressor stops while the indoor fan operates.

During the heating operation, the unit stops.

If this malfunction occurs during the

heating operation, the unit stops operating. During the cooling operation, the

compressor stops while the indoor fan operates. During heating,the unit stops operating.

Defrosting occurs in the heating

mode. Compressor operates while indoor fan stops operating.

Replace outdoor control panel AP1

Supply voltage is unstable

There is circuit malfunction on the outdoor unit's control panel AP1. Replace the outdoor units control panel AP1.

1.Supply voltage is lower than AC175V;

2.Wiring terminal 4V is loose or broken;

3.4V is damaged. Replace 4V.

Replace outdoor control panel AP1

Its the normal state

40 328 080000 01

Specifications subject to change without notice.

Page 41

TROUBLESHOOTING FOR THE MAIN MALFUNCTION

Indoor Unit

1. Malfunction of Temperature Sensor F1, F2

Troubleshooting for F1,F2 malfunction

the wiring terminal between the

temperature sensor and the controller

loosened or poorly contacted?

Is there a short circuit?

temperature sensor normal according

to the Resistance

Is the

Table ?

Yes

Insert the temperature

sensor tightly

Is malfunction

eliminated

Yes

Make sure all parts fastened tight

Is malfunction

eliminated

Yes

Replace the mainboard with the same model.

End

Replace it with a

temperature sensor

with the same model

Is malfunction

removed

Yes

Fig. 60 - Troubleshooting

Yes

328 080000 01 41

Specifications subject to change without notice.

Page 42

2. Malfunction of Blocked Protection of IDU Fan Motor H6

Start

Turn the fan blades

by hand under

power-off condition

Do the fan blades rotate smoothly with little to no resistance

Yes

Under power-off condition,

check whether the wiring terminal

between

indoor fan and main

board is loose.

Test whether the voltage between terminal 1 and terminal 2

Connect power and restart the unit.

of motor interface is within 280~310VDC.

Adjust the motor and blade

Yes

assembly so the rotor can run

smoothly.

to check whether the

Reinsert the wiring terminal of indoor fan.

to check whether the

It's the malfunction of main board.

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

Turn unit on

malfunction is

eliminated.

Turn unit on

malfunction is

eliminated.

Yes

Then check whether the voltage

between terminal 2 and terminal 3

of the motor interface is 15VDC.

Yes

Then check whether there is voltage

between terminal 2 and terminal 4

of the motor interface.

Yes

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

It's the malfunction of main board.

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

It's the malfunction of main board.

Replace a new board of the same model.

Yes

End

Fig. 61 - Troubleshooting

42 328 080000 01

Specifications subject to change without notice.

Page 43

3. Malfunction of Protection of Jumper Cap C5

Tr oubleshooting for C5

malfunc tion

Is ther e j um per cap on the

mainboard

Yes

the jum per cap i nser ted

correctly and

tightly

Yes

Replace the jum per cap

with the same model

Assemble the jumper cap with the same model

Is malfunction

eliminated

Insert the

jumper cap

tightly

Is malfunction

eliminated

Appearance of the jumper cap

Yes

Is malfunction

eliminated

Replace the mainboard with the same model.

End

Yes

Fig. 62 - Troubleshooting

328 080000 01 43

Specifications subject to change without notice.

Page 44

4. Malfunction of Over current Protection E5

Tr oubleshooti ng for E5 malfunction

Is the supply voltage unstable with big fluctuation?

Is the supply voltage too low with overload?

Is the indoor / outdoor heat exchanger too dirty,or are the air inlet and outlet blocked?

The fan is abnormal? Fan speed is too low or fan doesn’t rotate

Measure the current of the main board with a clamp ampere meter. Is the current higher than the value of the overcurrent protection?

Normal fluctuation is within 10 % of the rated

Yes

voltage on the nameplate

Adjust the supply voltage to maintain it within

Yes

normal range

Clean the indoor and outdoor heat exchangers

Yes

and remove the blockage of air inlet and outlet

Check the motor and reinstall the motor to have

Yes

the fan run normally

Replace the mainboard

Malfunction is eliminated

Malfunction is

Malfunction is eliminated

eliminated

Malfunction is eliminated

Yes

Is there blockage inside the system? (Filth blockage, ice plug, greasy blockage

Is the compressor running abnormally? Is there abnormal sound or oil leakage; is the temperature of the shell too high, etc.?

Replace the mainboard with the same model

End

Flush the heat exchangers with high pressure

Yes

nitrogen

Malfunction is eliminated

Yes

Replace the mainboard with the same model

Yes

Malfunction is eliminated

Yes

Fig. 63 - Troubleshooting

44 328 080000 01

Specifications subject to change without notice.

Page 45

5. Communication Malfunction E6

Start

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

Correct connection?

Connect the line according to wiring diagram.

Malfunction eliminated?

Yes

Main board matches

with display board? Main board of

IDU matches with that of ODU?

Yes

Communication wire is damaged?

Replace IDU's main board

Yes

Match correctly according to product specification

Replace communication cord

Malfunction eliminated?

Yes

Malfunction eliminated?

328 080000 01 45

Yes

End

Replace ODU's main board.

Fig. 64 - Troubleshooting

Specifications subject to change without notice.

Page 46

Outdoor Unit

09K/12K

1. Capacity charging malfunction (outdoor unit malfunction) (AP1 below means control board of the outdoor unit)

Main detection points:

S Detect of the voltage of L1 and L2 terminals of XT wiring board is between 210VAC−240VAC by alternating voltage meter. S Is reactor (L) well connected? Is connection wire loosened or pulled out?

Turn on the unit

Use DC voltmeter to measure the voltage on the two ends of electrolytic capacitor (see fig 30)

Voltage higher than 200V?

Measure the voltage input with AC voltmeter (see fig 30)

Voltage within 180VAC~260VAC?

Yes

Shut down the power and wait 20 minutes; or use DC voltmeter to measure the voltage on the two ends of electrolytic capacitor until the voltage is lower than 20V

Check the connection of reactor and connection wire

Is the wiring of reactor L is normal?

Yes

Replace outdoor mainboard AP1

Yes

Malfunction of the outdoor mainboard AP1

Power supply is abnormal; repair the power supply to restore the range between 180VAC ~260VAC

Connect the connection wire of reactor L correctly

Replace outdoor mainboard

Power on and restart the unit

Is the malfunction eliminated?

Yes

End

Fig. 65 - Troubleshooting

46 328 080000 01

Specifications subject to change without notice.

Page 47

2. Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken.

Main detection points:

S Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken

Fault diagnosis process:

Start

Check wiring of the reactor (L) of the outdoor unit and the PFC capacitor

Whether there is any

damage or

short-circuit?

Disconnect the terminals for the reactor and measure the resistance between the two terminals of the

reactor by an ohm gauge

Whether there is any damage

or short-circuit?

Replace the control

panel AP1

Replace the reactor

Replace it as per the

wiring diagram and

reconnect the wires

Restart the unit

If the fault is eliminated?

End

328 080000 01 47

Fig. 66 - Troubleshooting

Specifications subject to change without notice.

Page 48

3. Communication malfunction: (following AP1 for outdoor unit control board)

Mainly detect:

S Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? S Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any

damage?

Fault diagnosis process:

Start

The AP1 voltage detection circuit is at fault

If the fault is eliminated?

Check wiring inside of the indoor and outdoor

Check the communication

circuit of the outdoor unit

units

Are wires broken?

The communication

circuit is abnormal

Did the equipment operate normally before the failure

occurs?

Replace the main board

AP1 of the outdoor unit

If the fault is eliminated?

Check the wiring of the indoor and

outdoor units with reference to the

wiring diagram

Is the connection right?

Correctly connect the

corresponding wires for

the indoor and outdoor

units with reference to

the wiring diagram

If the fault is eliminated?

Replace the main board

the indoor unit

End

Fig. 67 - Troubleshooting

48 328 080000 01

Specifications subject to change without notice.

Page 49

4. High temperature and overload protection (E8) (AP1 below means control board of outdoor unit)

Main detection points:

S Is the outdoor ambient temperature in normal range? S Is the indoor and outdoor fan running normally? S Is the condensing unit blocked with dirt and debris?

overheat and high temperature protection

If the outdoor ambient temperature is higher than 127°F?

Is the unit clear of debris and the coil is clean?

Are the indoor and outdoor fan running normally?

Yes

Replace outdoor mainboard

Normal protection, unit starts

Yes

when ambient temperature lowers.

Clean the heat exchanger and remove surrounding obstacles

Are the connections tight?

Fan capacitor is broken?

Motor is broken?

Yes

Unit restarts normally

Adjust the connection

Replace Fan capacitor

Replace Motor

Yes

End

Replace mainboard

Fig. 68 - Troubleshooting

328 080000 01 49

Specifications subject to change without notice.

Page 50

5. Start−up failure (LC) (AP1 below means control board of the outdoor unit.

Main detection points:

S Is the compressor wiring correct? S Is the compressor stop time sufficient? S Is the compressor damaged? S Is the unit overcharged?

Turn on the unit

Does the unit turn on within 3min?

Yes

Is the compressor wired correctly?

Yes

Is the unit over charged?

Yes

Charge the refrigerant

according to unit

nameplate

Does the unit start up normally?

Replace outdoor mainboard AP1

Is the charge in the system correct and have you opened both liquid and suction valves? Does the unit start?

Check the connection of outdoor mainboard AP1 and compressor, and then

connect it according to wiring diagram

Does the unit start up normally?

Yes

Is the malfunction eliminated?

Replace the compressor

End

Yes

Fig. 69 - Troubleshooting

50 328 080000 01

Specifications subject to change without notice.

Page 51

6. Overload and high discharge temperature malfunction

Main detection points:

S Is the electronic expansion valve connected to the board? S Is the electronic expansion valve damaged? S Do you have a refrigerant leak? S Is the compressor overload protection terminal connected to

the mainboard?

30min after power off the unit

If the overload protector SAT is well connected?

Under ambient temperature, test the resistance of overload protector with ohmmeter; resistance value should be＜1000ohm

H3 or E4 is displayed

Yes

S Is the overload protector damaged? S Is the heat exchange plugged or cracked? S Is the heat exchanger dirty? S Is the ambient temperature too high? S Is there a malfunction in the discharge temperature sensor?

Replace overload protector SAT

Is the plug connecting the EEV to the control board connected securely?

Yes

Replace EEV coil of electronic expansion valve

Check the refrigerant; if there is leakage, charge

the refrigerant according to the service manual

Compressor overload protection terminal is not connected with the mainboard; reconnect them correctly

Heat exchange of unit is not good (heat exchanger

is dirty. Clean the heat exchanger

Ambient temperature is too high. Unit turns on

when the ambient temperature lowers.

Connect wire according to wiring diagram

Is the malfunction eliminated?

Yes

328 080000 01 51

Replace outdoor mainboard AP1

End

Fig. 70 - Troubleshooting

Specifications subject to change without notice.

Page 52

7. ODU Fan Motor can not operate

Table 24—Troubleshooting

POSSIBLE CAUSES DISCRIMINATING METHOD (AIR CONDITIONER STATUS) TROUBLESHOOTNG

Wrong wire connection, or poor connection

Check the wiring status according to circuit diagram

Connect wires according to wiring diagram to make sure all wiring terminals are connected firmly

Capacity of the ODU fan motor is damaged

Power voltage is a little low or high

Motor of outdoor unit is damaged

Measure the capacity of fan capacitor with an universal meter and find that the capacity is out of the deviation range indicated on the nameplate of fan capacitor.

Use universal meter to measure the power supply voltage. The voltage is a little high or low

When unit is on, cooling/heating performance is bad and ODU compressor generates a lot of noise and heat.

Replace the capacity of fan

Suggest to equip with voltage regulator

Change compressor oil and refrigerant. If no better, replace the compressor with a new one

8. Compressor does not operate

Table 25—Troubleshooting

POSSIBLE CAUSES DISCRIMINATING METHOD (AIR CONDITIONER STATUS) TROUBLESHOOTNG

Wrong wire connection, or poor connection

Capacity of compressor is damaged

Power voltage is a little low or high

Coil of compressor is burnt out

Cylinder of compressor is blocked

Check the wiring status according to circuit diagram

Measure the capacity of fan capacitor with an universal meter and find that the capacity is out of the deviation range indicated on the nameplate of fan capacitor.

Use universal meter to measure the power supply voltage. The voltage is a little high or low

Use universal meter to measure the resistance between compressor terminals and it's 0

Compressor can not operate Repair or replace compressor

Connect wires according to wiring diagram to make sure all wiring terminals are connected firmly

Replace the compressor capacitor

Suggest to equip with voltage regulator

Repair or replace compressor

9. Air conditioner is leaking

Table 26—Troubleshooting

POSSIBLE CAUSES

Drain pipe is blocked Water leaking from indoor unit

Drain pipe is broken Water leaking from drain pipe

Wrapping is not tight

DISCRIMINATING METHOD (AIR CONDITIONER STATUS)

Water leaking from the pipe connection place of indoor unit

TROUBLESHOOTNG

Eliminate the foreign objects inside the drain pipe

Replace drain pipe

Wrap it again and bundle it tightly

10. Abnormal sound and vibration

Table 27—Troubleshooting

POSSIBLE CAUSES DISCRIMINATING METHOD (AIR CONDITIONER STATUS) TROUBLESHOOTNG

When turn on or turn off the unit, the panel and other parts expand and there is an abnormal sound

When turn on or turn off the unit, there's abnormal sound due to flow of refrigerant inside air conditioner

Foreign objects inside the indoor unit or there are parts touching together inside the indoor unit

Foreign objects inside the outdoor unit or there are parts touching together inside the outdoor unit

Short circuit inside the magnetic coil During heating, the way valve has abnormal electromagnetic sound

Abnormal shake of compressor Outdoor unit gives out abnormal sound

Abnormal sound inside the compressor

There's the sound of "PAPA"zd

Water-running sound can be heard

There's abnormal sound fro indoor unit

There's abnormal sound fro outdoor unit

Abnormal sound inside the compressor

Normal phenomenon. Abnormal sound disappears after a few minutes.

Remove foreign objects. Adjust all parts' position of indoor unit, tighten screws and stick damping plaster between connected parts

Remove foreign objects. Adjust all parts' position of outdoor unit, tighten screws and stick damping plaster between connected parts

Replace magnetic coil

Adjust the support foot mat of compressor, tighten the bolts

If add too much refrigerant during maintenance, reduce refrigerant properly. Replace compressor for other circumstances.

52 328 080000 01

Specifications subject to change without notice.

Page 53

11. Communication malfunction (E6)

Main detection points:

S Check if the wire is damaged or the polarity is mixed between terminals. S Is the communication circuit of the indoor mainboard damaged? S Is the communication circuit of the outdoor mainboard (AP1) damaged?

Malfunction diagnosis process:

Replace the wire

Is the malfunction eliminated?

Is the polarity correct

between all terminals?

Yes

If the wiring is damaged?

Check the malfunction type with communication malfunction detector

Malfunction of outdoor communication circuit

Yes

Did the unit operate normally before malfunction?

Yes

Replace outdoor mainboard AP1

Check the connection wire according to the wiring diagram.

If the connection wire is connected well?

Reconnect the wire or replace the connection wire according to the wiring diagram.

Is the malfunction eliminated?

Yes

Replace indoor mainboard AP2

Is the malfunction eliminated?

Yes

End

Fig. 71 - Troubleshooting

328 080000 01 53

Specifications subject to change without notice.

Page 54

TROUBLESHOOTING (CONT)

T able 28—Air Conditioner can not start up

POSSIBLE CAUSES

No power supply or poor connection for power plug

Wrong wire connection between indoor unit and the outdoor unit, or poor connection for wiring terminals.

Electric leakage from air conditioner

Model selection for air switch is improper After energization air switch trips off Select proper air switch

Malfunction of remote controller

After energizer, operation indicator is not bright and the buzzer can not give out sound.

Under normal power supply circumstances, operation indicator is not bright after energization

After energization, room circuit breaker trips off at once.

After energization, operation indicator is bright while no display on remote controller or buttons have no action.

T able 29—Poor Cooling (Heating) for Air Conditioner

POSSIBLE CAUSES

Set temperature is improper Observe the set temperature on remote controller Adjust the set temperature Rotation speed of the IDU fan motor is set too low Small wind blow Set the fan speed at high or medium Filter of indoor unit is blocked Check the filter to see if its blocked Clean the filter

Installation position for the indoor and outdoor units is improper

Refrigerant is leaking

Malfunction of 4-way valve Blow cold wind during heating Replace the 4-way valve

Malfunction of capillary

Flow volume is insufficient

Malfunction of horizontal louver Horizontal louver can not swing Refer to point 3 of maintenance method for details

Malfunction of the IDU fan motor The IDU fan motor can not operate

Malfunction of the ODU fan motor The ODU fan motor can not operate Refer to point 4 of maintenance method for details Malfunction of compressor Compressor can not operate Refer to point 5 of maintenance method for details

Check whether the installation position is correct according to installation requirements for air conditioner.

Discharged air temperature during cooling is higher than normal discharged wind temperature. Discharged air temperature during heating is lower than normal discharged wind temperature. Unit's pressure is much lower than regulated range.

Discharged air temperature during cooling is higher than normal discharged wind temperature. Discharged air temperature during heating is lower than normal discharged wind temperature. The unit pressure is much lower than regulated range. If refrigerant is not leaking, part of capillary is blocked.

The pressure of valves is much lower than that stated in the specification

DISCRIMINATING METHOD

(Air Conditioner Status)

DISCRIMINATING METHOD

(Air Conditioner Status)

TROUBLESHOOTING

Confirm whether it's due to power failure. If yes, wait for power recovery. If not, check power supply circuit and ensure the power plug is connected well.

Check the circuit according to the circuit diagram and connect wires correctly. Ensure all wiring terminals are connected firmly.

Ensure the air conditioner is ground reliably. Ensure wires of the air conditioner are connected correctly. Check the wiring inside the air conditioners. Check whether the insulation layer of power cord is damaged; if yes replace the power cord.

Replace batters for remote controller Repair or replace remote controller

TROUBLESHOOTING

Adjust the installation position and install the rainproof and sun proof for the outdoor unit

Find the leakage causes and repair them. Add refrigerant.

Replace the capillary

Open the valve completely

Refer to troubleshooting for H6 for maintenance method in details

T able 30—Horizontal Louver can not swing

POSSIBLE CAUSES

Wrong wire connection, or poor connection

Stepping motor is damaged Stepping motor cannot operate Repair or replace stepping motor

Main board is damaged

54 328 080000 01

Check the wiring status according to the circuit diagram

Others are all normal while horizontal lover can not operate

DISCRIMINATING METHOD

(Air Conditioner Status)

Specifications subject to change without notice.

TROUBLESHOOTING

Connect wires according to the wiring diagram to ensure all wiring terminals are connected firmly

Replace the main board with the same model

Page 55

T able 31—ODU fan motor does not operate

POSSIBLE CAUSES

Wrong wire connection or poor connection

Capacity of the ODU fan motor is damage. Wrong wire connection or poor connection

Power voltage is too or high

Outdoor unit motor is damaged

Check the wiring status according to circuit diagram

Measure the capacity of the fan capacitor with a universal meter and find that the capacity is out of the deviation range indicated on the nameplate of the fan capacitor.

Use a universal meter to measure the power supply voltage. The voltage is a little high or low

When the unit is on, cooling/heating performance is bad and the ODU compressor generates a lot of noise and heat.

DISCRIMINATING METHOD

(Air Conditioner Status)

TROUBLESHOOTING

Connect wires according to the wiring diagram to ensure all wiring terminals are connected firmly.

Replace the capacity of fan

Suggest to equip with voltage regulator

Change the compressor oil and refrigerant If no better, replace the compressor with a new one.

T able 32—Compressor can not operate

POSSIBLE CAUSES

Wrong wire connection or poor connection

Capacity of compressor is damaged

Power voltage is too low or high

Compressor coil is burnt out

Cylinder of compressor is blocked Compressor can not operate Repair or replace the compressor

Check the wiring status according to the circuit diagram

Measure the capacity of the fan capacitor with a universal meter and find that the capacity is out of the deviation range indicated on the nameplate of the fan capacitor.

Use a universal meter to measure the power supply voltage. The voltage is a little high or low

Use a universal meter to measure the resistance between the compressor terminals and its 0

DISCRIMINATING METHOD

(Air Conditioner Status)

TROUBLESHOOTING

Connect wires according to the wiring diagram to ensure all wiring terminals are connected firmly

Replace the compressor capacitor

Suggest to equip with a voltage regulator

Repair or replace the compressor

T able 33—Air conditioner is leaking

POSSIBLE CAUSES

Drain pipe is blocked Water leaking from indoor unit Eliminate the foreign objects inside the drain pipe Drain pipe is broken Water leaking from drain pipe Replace drain pipe

Wrapping is not tight

Water leaking from the pipe connection place of indoor unit

DISCRIMINATING METHOD

(Air Conditioner Status)

TROUBLESHOOTING

Wrap it again and bundle it tight

Table 34—Abnormal sound and vibration

POSSIBLE CAUSES

When turning on or off the unit, the panel and other parts expand and there is an abnormal sound

When turning on or off the unit, there is an abnormal sound due to the flow of refrigerant inside the air conditioner

Foreign objects inside the indoor unit or there are parts touching together inside the indoor unit

Foreign objects inside the outdoor unit or there are parts touching together inside the outdoor unit

Abnormal shake of compressor Outdoor unit gives out abnormal sound

Abnormal sound inside the compressor Abnormal sound inside the compressor

The unit may make a crackling or popping noise.

Water-running sound can be heard

There is an abnormal sound coming from the indoor unit

There is an abnormal sound coming from the outdoor unit

DISCRIMINATING METHOD

(Air Conditioner Status)

TROUBLESHOOTING

Normal phenomenon. Abnormal sound disappears after a few minutes

Remove the foreign objects. Adjust all parts positions of indoor units, tighten screws and stick damping plaster between connected parts.

Remove the foreign objects. Adjust all parts positions of outdoor units, tighten screws and stick damping plaster between connected parts.

Adjust the support foot mat of compressor. Tighten the bolts

If add too much refrigerant during maintenance, reduce refrigerant properly, replace the compressor for other circumstances.

328 080000 01 55

Specifications subject to change without notice.

Page 56

DISASSEMBLY INSTRUCTIONS INDOOR UNIT

Remove the left end connection. Hold the end of

connection rod with left hand. Hold the horizontal louver with right hand to separate connection rod and horizontal louver.

Remove the horizontal louver along the center axle.

NOTE: During operation, install the left end of the horizontal louver first then install the right end. Once installed, restart the unit until the louver is reset. Once louver is reset, you can operate the unit.

Remove 4 screws on front case and electric box cover with screwdriver.

56 328 080000 01

Remove electric box cover.

Specifications subject to change without notice.

Page 57

DISASSEMBLY INSTRUCTIONS INDOOR UNIT (CONT)

328 080000 01 57

Specifications subject to change without notice.

Page 58

DISASSEMBLY INSTRUCTIONS INDOOR UNIT (CONT)

9. Remove electric box

10. Remove evaporator

58 328 080000 01

Specifications subject to change without notice.

Page 59

DISASSEMBLY INSTRUCTIONS INDOOR UNIT (CONT)

328 080000 01 59

Specifications subject to change without notice.

Page 60

DISASSEMBLY INSTRUCTIONS INDOOR UNIT (CONT)

11. Remove swing blade

60 328 080000 01

Specifications subject to change without notice.

Page 61

DISASSEMBLY INSTRUCTIONS INDOOR UNIT (CONT)

12. Remove cross ow blade and motor

328 080000 01 61

Specifications subject to change without notice.

Page 62

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT 9−12

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

after turning off all power supplies and discharge the

refrigerant completely before removal.

ProcedureSteps

1.Remove the panel

Open the front panel. Push the rotor shaft on

both sides of the panel to separate it from the

groove. Remove the panel.

2.Remove the top cover

Remove the connection screws connecting

the top cover plate with the front panel and the

right side plate. Next, remove the top

cover.

3.Remove the front grille

Remove the connection screws between

the front grille and the front panel. Then remove

the front grille.

top cover

front grille

62 328 080000 01

Specifications subject to change without notice.

Page 63

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT 9−12 (CONT)

ProcedureSteps

4.Remove the front panel

Remove the connection screws connecting the

front panel with the chassis and the motor

support. Next, remove the front panel.

5.Remove the right side plate

Remove the connection screws connecting the

right side plate with the valve support and

the electric box. Then remove the right side

plate.

front panel

right side plate

6.Remove the axial flow blade

Remove th e nut securing the blade. Next, remove the axial flow blade.

328 080000 01 63

Specifications subject to change without notice.

Page 64

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT 9−12 (CONT)

ProcedureSteps

7.Remove the motor and motor support

Remove the 4 tapping screws securing the motor. Pull out the lead-out wire and remove the motor. Remove the 2 tapping screws securing the motor support. Lift the motor support to remove it.

8.Remove the electric box assy

Remove the 2 screws securing the e le ct r ic

box cover. Lift to remove the cover. Loosen the

wire and disconnect the terminal. Lift to remove

the electric box assy.

motor support

motor

electric box assy

9.Remove the clapboard sub-assy

Loosen the clapboard sub-assy. screws.

The clapboard sub-assy has a hook on the

lower side. Lift and pull the clapboard

sub-assy to remove.

clapboard sub-assy

64 328 080000 01

Specifications subject to change without notice.

Page 65

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT 9−12 (CONT)

ProcedureSteps

10.Remove the 4-way valve assy

Unscrew the fastening nut of the 4-way

Valve Assy coil and remove the coil. Wrap

the 4-way Valve Assy with wet cotton and

unsolder the 4 weld spots connecting the

4-way Valve Assy to remove.

NOTE: Refrigerant should be discharged first.

The welding process should be performed as quickly as possible and keep the wrapping cotton wet at all times. Be sure not to burn out the compressor lead-out wire.

11.Remove the compressor

Remove the comp r e s so r’ s 3 footing screws

and remove the compressor.

4-way valve assy

compressor

328 080000 01 65

Specifications subject to change without notice.

Page 66

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 18−24

1.Remove handle

Twist off the screws used for fixing the handle，pull the handle up ward to remove it.

2.Remove top panel

handle

Remove the screws connecting the top panel with the front panel and left&right side plate, and then remove the top panel.

3.Remove front side panel

Loosen the screws connecting the front side panel and chassis. Remove the front side panel.

top panel

front side panel

66 328 080000 01

Specifications subject to change without notice.

Page 67

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 18−24 (CONT)

4.Remove grille and panel

Twist off the screws connecting the grille and panel, and then remove the grille.

Twist off the screws connecting the panel, chassis and motor support with screwd-river, and then remove the panel.

grille

5.Remove right side plate

panel

right side plate

Twist off the screws connecting the right side plate and chassis, valve support and condenser, and then remove the right side plate.

6.Remove axial flow blade

Twist off the nuts on blade with wrench and then remove the axial flow blade.

328 080000 01 67

axial flow blade

Specifications subject to change without notice.

Page 68

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 18−24 (CONT)

7.Remove electric box

electric box

Twist off the screws on electric box, cut off the tieline with scissors or pliers, pull out the wiring terminal, pull it upwards to remove the electric box.

Twist off the screws on electric box (fireproofing) with screwdriver, and then remove the electric box (fireproofing).

8.Remove motor

Twist off the tapping screws fixing the motor, pull out the pin of leading wire for motor and then remove the motor.

electric box (fireproofing)

motor

68 328 080000 01

Specifications subject to change without notice.

Page 69

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 18−24 (CONT)

9.Remove motor support

Twist off the tapping screws fixingthe motor support, pull it upwardsand then remove the motor support.

motor support

10.Remove isolation sheet

Twist off the screws connecting isolation sheet and end plate of condenser and chassis, and then remove the isolation sheet.

11.Remove 4-way valve

Unsolder the pipeline between compressor, condenser, gas and liquid valve, and then remove the 4-way valve. (note: release all refrigerant before unsoldering).

isolation sheet

4-way valve

328 080000 01 69

Specifications subject to change without notice.

Page 70

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 18−24 (CONT)

12.Remove gas valve and liquid valve

Twist off the 2 bolts fixing the valve sub-assy. Unsolder the soldering joint between gas valve and air-return pipe and then remove the gas valve.(note: when unsoldering the soldering joint, wrap the gas valve with wet cloth completely to avoid the damage to valve, and release all refrigerant completely at first). Unsolder the soldering joint between liquid valve and connection pipe of liquid valve, and then remove the liquid valve.

13.Remove valve support

gas valve

liquid valve

Twist off the screws connecting valve support and chassis, and then remove the valve support.

14.Remove compressor

Twist off the 3 foot nuts on compressor and then remove the compressor.

valve support

compressor

70 328 080000 01

Specifications subject to change without notice.

Page 71

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 18−24 (CONT)

15.Remove left side plate

Twist off the screws connecting the left side plate and chassis with screwdriver, and then remove the left side plate.

left side plate

16.Remove chassis and condenser

Pull it upwards to separate the chassis and condenser.

condenser

chassis

328 080000 01 71

Specifications subject to change without notice.

Page 72

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 30−36

Steps

1. Remove the big handle,valve cover and the top cover

Remove the screw connecting the big handle and right side plate, and then remove the big handle. Remove the screw connecting the valve cover and right side plate, and then remove the valve cover.

2.Remove the top panel

Remove the screws connecting the top panel with the front panel and left and right side plate, and then remove the top panel.

Procedure

handle

valve cover

top panel

3.Remove the front side panel

Loosen the screws connecting the front side panel and chassis. Remove the front side panel.

front side panel

72 328 080000 01

Specifications subject to change without notice.

Page 73

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 30−36 (CONT)

Steps

4.Remove the grille and panel

Twist off the screws connecting the grille and panel. Next, remove the grille.

Twist off the screws connecting the panel, chassis and motor support with a screwdriver. Next, remove the panel.

5.Remove the right side plate

Twist off the screws connecting the right side plate and chassis, valve support and condenser. Next, remove the right side plate.

Procedure

grille

panel

right side plate

6.Remove the axial flow blade

Twist off the nuts on the blade with wrench. Next, remove the axial flow blade.

328 080000 01 73

axial flow blade

Specifications subject to change without notice.

Page 74

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 30−36 (CONT)

Steps

7.Remove the electric box

Twist o the screws on the electric box, and cut o the tieline with scissors or pliers. Pull out the wiring terminal and pull it upwards to remove the electric box.

Procedure

electric box

Twist o the screws on the electric box (reproong) with a screwdriver. Next, remove the electric box (reproong).

8.Remove the motor

Twist off the tapping screws securing the motor. Pull out the motor’s leading wire pin and then remove the motor.

electric box (fireproofing)

motor

74 328 080000 01

Specifications subject to change without notice.

Page 75

DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 30−36 (CONT)

Steps

9.Remove the motor support

Twist off the tapping screws securing the motor

support. Pull it upwards and then remove the

motor support.

10.Remove the isolation sheet

Procedure

motor support

Twist off the screws connecting the isolation sheet

and end plate of the condenser and chassis.

Next, remove the isolation sheet.

11.Remove the 4-way valve

Unsolder the pipeline between the compressor,

condenser, gas and liquid valve, and then

remove the 4-way valve. (NOTE: Release all

refrigerant before unsoldering).

isolation sheet

4-way valve

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DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 30−36 (CONT)

Steps

12.Remove the gas valve and liquid valve

Twist off the 2 bolts fixing the valve sub-assy. Unsolder the soldering joint between gas valve and air-return pipe and then remove the gas

Note: When unsoldering the soldering joint,

valve. ( wrap the gas valve with wet cloth completely to avoid damaging the valve. Be sure to release all refrigerant completely first). Unsolder the soldering joint between the liquid valve and liquid valve connection pipe and then remove the liquid valve.

13.Remove the valve support

Procedure

gas valve

liquid valve

Twist off the screws connecting valve support and chassis, and then remove the valve support.

14.Remove the compressor

Twist off the 3 foot nuts on the compressor. Next, remove the compressor.

valve support

compressor

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DISASSEMBLY INSTRUCTIONS OUTDOOR UNIT SIZES 30−36 (CONT)

Steps

15.Remove the left side plate

Twist off the screws connecting the left side plate

and chassis with a screwdriver, .

Next, remove the left side plate.

16.Remove the chassis and condenser

Procedure

left side plate

Pull it up to separate the chassis and condenser.

condenser

chassis

328 080000 01 77

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Page 78

APPENDIX

Appendix 1: Fahrenheit and Celsius Reference Sheet

Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32

T able 35—Set Temperature

Fahrenheit Display

Temperature (

61 60.8 16 69/70 69.8 21 78/79 78.8 26 62/63 62.6 17 71/72 71.6 22 80/81 80.6 27 64/65 64.4 18 73/74 73.4 23 82/83 82.4 28 66/67 66.2 19 75/76 75.0 24 84/85 84.2 29

68 68 20 77 77 25 86 86 30

Fahrenheit Display

Temperature (

32/33 32 0 55/26 55.4 13 79/80 78.8 26 34/35 33.8 1 57/58 57.2 14 81 80.6 27

36 35.6 2 59/60 59 15 82/83 82.4 28 37/38 37.4 3 61/62 60.8 16 84/85 84.2 29 39/40 39.2 4 63 62.6 17 86/87 86 30 41/42 41 5 64/65 64.4 18 88/89 87.8 31 43/44 42.8 6 66/67 66.2 19 90 89.6 32

45 44.6 7 68/69 68 20 91/92 91.4 33 46/47 46.4 8 70/71 69.8 21 93/94 93.2 34 48/49 48.2 9 72 71.6 22 95/96 95 35 50/51 50 10 73/74 73.4 23 97/98 96.8 36 52/23 51.8 11 75/76 75.2 24 99 98.6 37

54 53.6 12 77/78 77 25

Fahrenheit (_F) Celsius (_C)

_F)

Fahrenheit (_F) Celsius (_C)

_F)

Fahrenheit Display

Temperature (

Fahrenheit (_F) Celsius (_C)

_F)

T able 36—Ambient Temperature

Fahrenheit Display

Temperature (

Fahrenheit (_F) Celsius (_C)

_F)

Fahrenheit Display

Temperature (

Fahrenheit Display

Temperature (

_F)

Fahrenheit (_F) Celsius (_C)

Appendix 2: Connection Pipe Configuration

1. Standard length of the connection pipe

S .2 in (5m), .29 in (7.5m), .31 in (8m)

2. Minimum length of the connection pipe is .12 in (3m).

3. Maximum length of the connection pipe and maximum height difference.

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

S After the connection pipe length is lengthened for .39 in

(10m) at the basis of the standard length, add 5ml of refrigerant oil for each additional .2 in (5m) of connection pipe.

S The calculation method of additional refrigerant charging

amount (on the basis of liquid pipe):

S When the connection pipe length is above .2 in (5m), add

refrigerant according to the prolonged length of liquid pipe. The additional refrigerant charging amount per meter is different according to the diameter of liquid pipe. Review the following table.

S Additional refrigerant charging amount = prolonged length of

liquid pipe X additional refrigerant charging amount per meter.

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Appendix 3: Pipe Expanding Method

NOTE: Improper pipe expanding is the main cause of refrigerant leakage. Please expand the pipe according to the following steps:

a. Cut the pipe

S Confirm the pipe length according to the distance of the

indoor and outdoor units.

S Cut the required pipe with a pipe cutter.

Pipe

Pipe cutter

Leaning Uneven Burr

Union pipe

Pipe

Fig. 74 - Put on the union nut

e. Expand the port.

S Expand the port with an expander.

NOTE: “A” is different according to the diameter, refer to Table 37.

Table 37—A

OUTER DIAMETER (mm)

φ6−6.35 (1/4”)

φ9.52 (3/8”) 1.6 1.0

φ12−12.70(1/2”) 1.8 1.0

φ16−15.88 (5/8”) 2.4 2.2

Max Min

A(mm)

1.3 0.7

Fig. 72 - Cut the pipe

b. Remove the burrs

S Remove the burrs with a shaper and prevent the burrs from

entering the pipe.

c. Put on a suitable insulating pipe.

Pipe

Shaper

Downwards

Fig. 73 - Remove the burrs

d. Put on the union nut.

S Remove the union nut on the indoor connection pipe and

outdoor valve; install the union nut on the pipe.

Hard

Expander

mold

Pipe

Fig. 75 - Expand the port

f. Inspection

S Check the quality of the expanding port. If there is any

blemish, expand the port again according to the steps above.

Smooth surface

Improper expanding

damaged

leaning

The length is equal

surface

crack uneven

thickness

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Page 80

Appendix 4: List of Resistance for the Temperature Sensor

Table 38—Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units (15K)

Temp (_C) Resistance (kW) Temp (_C) Resistance (kW) Temp (_C) Resistance (kW) Temp (_C) Resistance (kW)

-19 138.1 20 18.75 59 3.848 98 1.071

-18 128.6 21 17.93 60 3.711 99 1.039

-17 121.6 22 17.14 61 3.579 100 1.009

-16 115 23 16.39 62 3.454 101 0.98

-15 108.7 24 15.68 63 3.333 102 0.952

-14 102.9 25 15 64 3.217 103 0.925

-13 97.4 26 14.36 65 3.105 104 0.898

-12 92.22 27 13.74 66 2.998 105 0.873

-11 87.35 28 13.16 67 2.896 106 0.848

-10 82.75 29 12.6 68 2.797 107 0.825

-9 78.43 30 12.07 69 2.702 108 0.802

-8 74.35 31 11.57 70 2.611 109 0.779

-7 70.5 32 11.09 71 2.523 110 0.758

-6 66.88 33 10.63 72 2.439 111 0.737

-5 63.46 34 10.2 73 2.358 112 0.717

-4 60.23 35 9.779 74 2.28 113 0.697

-3 57.18 36 9.382 75 2.206 114 0.678

-2 54.31 37 9.003 76 2.133 115 0.66

-1 51.59 38 8.642 77 2.064 116 0.642

0 49.02 39 8.297 78 1.997 117 0.625

1 46.6 40 7.967 79 1.933 118 0.608

2 44.31 41 7.653 80 1.871 119 0.592

3 42.14 42 7.352 81 1.811 120 0.577

4 40.09 43 7.065 82 1.754 121 0.561

5 38.15 44 6.791 83 1.699 122 0.547

6 36.32 45 6.529 84 1.645 123 0.532

7 34.58 46 6.278 85 1.594 124 0.519

8 32.94 47 6.038 86 1.544 125 0.505

9 31.38 48 5.809 87 1.497 126 0.492

10 29.9 49 5.589 88 1.451 127 0.48

11 28.51 50 5.379 89 1.408 128 0.467

12 27.18 51 5.197 90 1.363 129 0.456

13 25.92 52 4.986 91 1.322 130 0.444

14 24.73 53 4.802 92 1.282 131 0.433

15 23.6 54 4.625 93 1.244 132 0.422

16 22.53 55 4.456 94 1.207 133 0.433

17 21.51 56 4.294 95 1.171 134 0.401

18 20.54 57 4.139 96 1.136 135 0.391

19 19.63 58 3.99 97 1.103 136 0.382

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Table 39—Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K)

Temp (_C) Resistance (kW) Temp (_C) Resistance (kW) Temp (_C) Resistance (kW) Temp (_C) Resistance (kW)

-19 181.4 20 25.01 59 5.13 98 1.427

-18 171.4 21 23.9 60 4.498 99 1.386

-17 162.1 22 22.85 61 4.773 100 1.346

-16 153.3 23 21.85 62 4.602 101 1.307

-15 145 24 20.9 63 4.443 102 1.269

-14 137.2 25 20 64 4.289 103 1.233

-13 129.9 26 19.14 65 4.14 104 1.198

-12 123 27 18.13 66 3.998 105 1.164

-11 116.5 28 17.55 67 3.861 106 1.131

-10 110.3 29 16.8 68 3.729 107 1.099

-9 104.6 30 16.1 69 3.603 108 1.069

-8 99.13 31 15.43 70 3.481 109 1.039

-7 94 32 14.79 71 3.364 110 1.01

-6 89.17 33 14.18 72 3.252 111 0.983

-5 84.61 34 13.59 73 3.144 112 0.956

-4 80.31 35 13.04 74 3.04 113 0.93

-3 76.24 36 12.51 75 2.94 114 0.904

-2 72.41 37 12 76 2.844 115 0.88

-1 68.79 38 11.52 77 2.752 116 0.856

0 65.37 39 11.06 78 2.663 117 0.833

1 62.13 40 10.62 79 2.577 118 0.811

2 59.08 41 10.2 80 2.495 119 0.77

3 56.19 42 9.803 81 2.415 120 0.769

4 53.46 43 9.42 82 2.339 121 0.746

5 50.87 44 9.054 83 2.265 122 0.729

6 48.42 45 8.705 84 2.194 123 0.71

7 46.11 46 8.37 85 2.125 124 0.692

8 43.92 47 8.051 86 2.059 125 0.674

9 41.81 48 7.745 87 1.996 126 0.658

10 39.87 49 7.453 88 1.934 127 0.64

11 38.01 50 7.173 89 1.875 128 0.623

12 36.24 51 6.905 90 1.818 129 0.607

13 34.57 52 6.648 91 1.736 130 0.592

14 32.98 53 6.403 92 1.71 131 0.577

15 31.47 54 6.167 93 1.658 132 0.563

16 30.04 55 5.942 94 1.609 133 0.549

17 28.68 56 5.726 95 1.561 134 0.535

18 27.39 57 5.519 96 1.515 135 0.521

19 26.17 58 5.32 97 1.47 136 0.509

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Table 40—Resistance Table of Discharge Temperature Sensors for Outdoor (50K)

Temp (_C) Resistance (kW) Temp (_C) Resistance (kW) Temp (_C) Resistance (kW) Temp (_C) Resistance (kW)

-29 853.5 10 98 49 18.34 88 4.754

-28 799.8 11 93.42 50 17.65 89 4.609

-27 750 12 89.07 51 16.99 90 4.469

-26 703.8 13 84.95 52 16.36 91 4.334

-25 660.8 14 81.05 53 15.75 92 4.204

-24 620.8 15 77.35 54 15.17 93 4.079

-23 580.6 16 73.83 55 14.62 94 3.958

-22 548.9 17 70.5 56 14.09 95 3.841

-21 516.6 18 67.34 57 13.58 96 3.728

-20 486.5 19 64.33 58 13.09 97 3.619

-19 458.3 20 61.48 59 12.62 98 3.514

-18 432 21 58.77 60 12.17 99 3.413

-17 407.4 22 56.19 61 11.74 100 3.315

-16 384.5 23 53.74 62 11.32 101 3.22

-15 362.9 24 51.41 63 10.93 102 3.129

-14 342.8 25 49.19 64 10.54 103 3.04

-13 323.9 26 47.08 65 10.18 104 2.955

-12 306.2 27 45.07 66 9.165 105 2.872

-11 289.6 28 43.16 67 9.489 106 2.792

-10 274 29 41.34 68 9.165 107 2.715

-9 259.3 30 39.61 69 8.854 108 2.64

-8 245.6 31 37.96 70 8.555 109 2.568

-7 232.6 32 36.38 71 8.268 110 2.498

-6 220.5 33 34.88 72 7.991 111 2.431

-5 209 34 33.45 73 7.726 112 2.365

-4 198.3 35 32.09 74 7.47 113 2.302

-3 199.1 36 30.79 75 7.224 114 2.241

-2 178.5 37 29.54 76 6.998 115 2.182

-1 169.5 38 28.36 77 6.761 116 2.124

0 161 39 27.23 78 6.542 117 2.069

1 153 40 26.15 79 6.331 118 2.015

2 145.4 41 25.11 80 6.129 119 1.963

3 138.3 42 24.13 81 5.933 120 1.912

4 131.5 43 23.19 82 5.746 121 1.863

5 125.1 44 22.29 83 5.565 122 1.816

6 119.1 45 21.43 84 5.39 123 1.77

7 113.4 46 20.6 85 5.222 124 1.725

8 108 47 19.81 86 5.06 125 1.682

9 102.8 48 19.06 87 4.904 126 1.64

NOTE: The information above is for reference only.

Lewisburg, Tennessee 37091 USA

82 328 080000 01

Specifications subject to change without notice.