Daikin Ftxs30hvju User manual

1645 Wallace Drive, Suite 110

Carrollton, TX75006

inf[email protected]

www.daikinac.com

AMERICAS

SiUS04-924

SiUS04-924Service Manual / Inverter Pair Wall MountedType H-Series

[Applied Models]

Inverter Pair : Heat Pump

Inverter Pair

Wall MountedType H-Series

Specifications, designs and other content appearing in this brochure are current as of March 2009 but subject to change without notice.

SiUS04-924

Printed in U.S.A. 03/2009 B AK

SiUS04-924

Table of Contents i

Inverter Pair

H-Series

Heat Pump

Indoor Units

FTXS30HVJU

FTXS36HVJU

Outdoor Units

RXS30HVJU

RXS36HVJU

Inverter Pair

H-Series

Part 1

List of Functions ...................................................................1

1. List of Functions..........................................................................................2

Part 2

Specifications .......................................................................3

1. Specifications..............................................................................................4

Part 3

Printed Circuit Board

Connector Wiring Diagram....................................................6

1. Printed Circuit Board Connector Wiring Diagram........................................7

1.1 Indoor Unit.................................................................................................... 7

1.2 Outdoor Unit................................................................................................. 9

SiUS04-924

ii Table of Contents

Part 4

Function and Control...........................................................11

1. Main Functions..........................................................................................12

1.1 Frequency Principle.................................................................................... 12

1.2 Airflow Direction Control.............................................................................14

1.3 Fan Speed Control for Indoor Units............................................................15

1.4 Program Dry Function................................................................................16

1.5 Automatic Operation................................................................................... 17

1.6 Thermostat Control..................................................................................... 18

1.7 NIGHT SET Mode......................................................................................19

1.8 ECONO Mode ............................................................................................ 20

1.9 INTELLIGENT EYE.................................................................................... 21

1.10 Inverter POWERFUL Operation.................................................................23

1.11 Other Functions..........................................................................................24

2. Function of Thermistor..............................................................................26

3. Control Specification.................................................................................27

3.1 Mode Hierarchy..........................................................................................27

3.2 Frequency Control...................................................................................... 28

3.3 Controls at Mode Changing / Start-up........................................................30

3.4 Discharge PipeTemperature Control..........................................................32

3.5 Input Current Control..................................................................................33

3.6 Freeze-up Protection Control.....................................................................34

3.7 Heating Peak-Cut Control .......................................................................... 34

3.8 Fan Control................................................................................................. 35

3.9 Liquid Compression Protection Function 2.................................................35

3.10 Defrost Control...........................................................................................35

3.11 Electronic Expansion Valve Control...........................................................37

3.12 Malfunctions............................................................................................... 40

3.13 Forced Operation Mode ............................................................................. 41

3.14 Additional Functions................................................................................... 41

3.15 Facility Setting Switch (cooling at low outdoor temperature)...................... 42

Part 5

Operation Manual................................................................44

1. System Configuration................................................................................45

2. Instruction..................................................................................................46

2.1 Remote Controller...................................................................................... 46

2.2 AUTO · DRY · COOL · HEAT · FAN Operation..........................................48

2.3 Adjusting the Airflow Direction....................................................................50

2.4 COMFORT AIRFLOW Operation...............................................................52

2.5 INTELLIGENT EYE Operation................................................................... 53

2.6 POWERFUL Operation..............................................................................55

2.7 OUTDOOR UNIT QUIET Operation...........................................................56

2.8 ECONO Operation ..................................................................................... 57

2.9 TIMER Operation ....................................................................................... 58

SiUS04-924

Table of Contents iii

2.10 WEEKLY TIMER Operation .......................................................................60

Part 6

Service Diagnosis................................................................66

1. Caution for Diagnosis................................................................................67

2. Problem Symptoms and Measures...........................................................68

3. Service Check Function............................................................................69

4. Troubleshooting ........................................................................................72

4.1 Error Codes and Description......................................................................72

4.2 Indoor Unit PCB Abnormality .....................................................................73

4.3 Freeze-up Protection Control or High Pressure Control............................. 74

4.4 Fan Motor (DC Motor) or Related Abnormality........................................... 76

4.5 Thermistor or Related Abnormality (Indoor Unit)........................................78

4.6 Signal Transmission Error (between Indoor and Outdoor Unit) ................. 79

4.7 Unspecified Voltage (between Indoor and Outdoor Units)......................... 80

4.8 Outdoor Unit PCB Abnormality...................................................................81

4.9 OL Activation (Compressor Overload) .......................................................82

4.10 Compressor Lock....................................................................................... 83

4.11 DC Fan Lock ..............................................................................................84

4.12 Input Overcurrent Detection.......................................................................85

4.13 Four-Way Valve Abnormality......................................................................86

4.14 Discharge Pipe Temperature Control.........................................................88

4.15 High Pressure Control in Cooling...............................................................89

4.16 Compressor System Sensor Abnormality ..................................................90

4.17 Position Sensor Abnormality......................................................................91

4.18 CT or Related Abnormality.........................................................................93

4.19 Thermistor or Related Abnormality (Outdoor Unit).....................................95

4.20 Electrical Box Temperature Rise................................................................97

4.21 Radiation Fin Temperature Rise ................................................................98

4.22 Output Overcurrent Detection ..................................................................100

4.23 Insufficient Gas.........................................................................................102

4.24 Low-voltage Detection or Over-voltage Detection....................................104

4.25 Signal Transmission Error on Outdoor Unit PCB.....................................105

5. Check......................................................................................................106

5.1 How to Check........................................................................................... 106

Part 7

Removal Procedure...........................................................113

1. Indoor Unit...............................................................................................114

1.1 Removal of Air Filter / Front Panel...........................................................114

1.2 Removal of Front Grille ............................................................................117

1.3 Removal of Electrical Box ........................................................................ 120

1.4 Removal of PCB.......................................................................................127

1.5 Removal of Horizontal Blades (Louvers)/Vertical blades(Fins)/Swing Motors

135

SiUS04-924

iv Table of Contents

1.6 Removal of Fan Motor..............................................................................143

1.7 Removal of Heat Exchanger ....................................................................146

1.8 Removal of Fan Rotor..............................................................................150

2. Outdoor Unit............................................................................................152

2.1 Removal of Outer Panels......................................................................... 153

2.2 Removal of the Electrical Box ..................................................................166

2.3 Removal of PCB.......................................................................................170

2.4 Removal of Fan Motor..............................................................................173

2.5 Removal of Coils / Thermistors................................................................174

2.6 Removal of Sound Blanket.......................................................................177

2.7 Removal of Compressor........................................................................... 180

Part 8

Other Considerations ........................................................182

1. Other Considerations..............................................................................183

1.1 Trial Operation from the Remote Controller.............................................183

1.2 Jumper Settings .......................................................................................184

1.3 Application of Silicon Grease to athe Power Transistor and a Diode Bridge .

185

Part 9

Appendix............................................................................187

1. Piping Diagrams......................................................................................188

2. Wiring Diagrams......................................................................................189

Index ...........................................................................................190

Drawings & Flow Charts ...............................................................194

SiUS04-924 Safety Considerations

Safety Considerations v

1. SAFETY CONSIDERATIONS

Read these SAFETY CONSIDERATIONS carefully before

performing any repair work. Comply with these safety

symbols without fail.

Meanings of DANGER, WARNING, CAUTION, and NOTE

Symbols:

DANGER .............. Indicates an imminently hazardous

situation which, if not avoided, will

result in death or serious injury.

WARNING ............ Indicates a potentially hazardous

situation which, if not avoided, could

result in death or serious injury.

CAUTION ............. Indicates a potentially hazardous

situation which, if not avoided, may

result in minor or moderate injury. It

may also be used to alert against

unsafe practices.

NOTE .................. Indicates situations that may result in

equipment or property-damage

accidents only.

1.1 Safety Considerations for Repair

DANGER

• If refrigerant gas leaks during repair or service, ventilate

the area immediately. Refrigerant gas may produce toxic

gas if it comes into contact with flames. Refrigerant gas

is heavier than air and replaces oxygen. In the event of

an accident, a massive leak could lead to oxygen

depletion, especially in basements, and an asphyxiation

hazard could occur leading to serious injury or death.

• Do not start or stop the air conditioner operation by

plugging or unplugging the power cable plug if a plug

is used. Plugging or unplugging the power cable plug

to operate the equipment may cause an electrical

shock or fire.

• Use parts listed in the service parts list and

appropriate tools to conduct repair work. The use of

inappropriate parts or tools may cause an electrical

shock or fire.

• Disconnect power before disassembling the

equipment for repairs. Working on the equipment that

is connected to the power supply may cause an

electric shock. Ifit is necessary to supply power to the

equipment to conduct repairs or to inspect the

circuits, do not touch any electrically charged

sections of the equipment.

• The step-up capacitor supplies high-voltage

electricity to the electrical components of the outdoor

unit. Discharge the capacitor completely before

conducting repair work. A charged capacitor may

cause an electrical shock.

• If refrigerant gas is discharged during repair work, do

not touch the discharged refrigerant gas. The

refrigerant gas may cause frostbite.

• Use only pipes, flare nuts, tools, and other materials

designed specifically for R410A refrigerant systems.

Never use tools or materials designed for R22

refrigerant systems on an R410A refrigerant system.

Doing so can cause a serious accident or an

equipment failure.

• Check to see if the parts and wires are mounted and

connected properly, and if the connections at the

soldered or crimped terminals are secure. Improper

installation and connections may cause excessive

heat generation, fire, or electrical shock.

WARNING

• Prior to disconnecting the suction or discharge pipe

from the compressor at the welded section,

pump-down the refrigerant gas completely in a well-

ventilated place first. If there is refrigerant gas or oil

remaining inside the compressor, the refrigerant gas or

oil can discharge when the pipe is being disconnected

and it may cause an injury.

• Wear a safety helmet, gloves, and a safety belt when

working at an elevated height of more than 6.5 ft (2 m).

Insufficientsafetymeasuresmaycause afallresultingin

injury.

• Do not mix air or gas other than the specified

refrigerant R410A to the refrigerant system. If air

enters the refrigerant systems, it can cause an

excessive high pressure resulting in equipment

damage and injury.

• When relocating the equipment, check if the new

installation site has sufficient strength to withstand

the weight of the equipment. If the installation site

does not have sufficient strength and the equipment

is not properly secured, the equipment may fall and

cause injury.

• Securely fasten the outside unit terminal cover

(panel). If the terminal cover/panel is not fastened

properly, dust or water may enter the outside unit

causing fire or electric shock.

• When relocating the system, keep the refrigerant

circuit free from substances other than the specified

refrigerant (R-410A) suchas air. Anypresence of airor

other foreign substance in the refrigerant circuit can

cause an abnormal pressure rise or rupture, resulting

in injury.

• If refrigerant gas leaks, locate the leaking point and

repair it before charging refrigerant. After charging

refrigerant, check for refrigerant leaks. If the leaking

point cannot be located and the repair work must be

stopped, perform a pump-down and close the service

valve to prevent the refrigerant gas from leaking into

the room. The refrigerant gas itself is harmless, but it

Safety Considerations SiUS04-924

vi Safety Considerations

may generate toxic gases if it comes into contact with

flames.

CAUTION

• Do not repair the electrical components with wet

hands. Working on the equipment with wet hands may

cause an electrical shock.

• Do not clean the air conditioner by splashing water on

it. Washing the unit with water may cause an electrical

shock.

• Ground the unit when repairing equipment in a humid

or wet place to avoid electrical shocks.

• Turn off the power when cleaning the equipment to

prevent internal fans that rotate at high speed from

starting suddenly as they can cause injury.

• Let the refrigerant lines cool down before performing

any repair work. Working on the unit when the

refrigerant lines are hot may cause burns.

• All welding and cutting operations must be done in a

well-ventilated place to prevent the accumulation of

toxic fumes or possibly oxygen deficiency to occur.

• Check the grounding and repair it if the equipment is

not properly grounded. Improper grounding may

cause an electrical shock.

• Measure the insulation resistance after the repair. The

resistance must be 1M or higher. Faulty insulation

may cause an electrical shock.

NOTE

• Check the drainage of the indoor unit after finishing

repair work. Faulty drainage may cause water to enter

the room resulting in wet floors and furniture.

• Do not tilt the unit when removing it. The water inside

the unit may spill resulting in wet floors and furniture.

• Dismantling of the unit, disposal of the refrigerant, oil,

and additional parts, should be done in accordance

with the relevant local, state, and national regulations.

1.2 Safety Considerations for Users

DANGER

• Never attempt to modify the equipment. Doing so can

cause electrical shock, excessive heat generation, or

fire.

• If the power cable and lead wires have scratches or

have become deteriorated, have them replaced.

Damaged cable and wires may cause an electrical

shock or fire.

• Do not use a joined power cable or an extension cord,

or share the same power outlet with other electrical

appliances as it may cause an electrical shock or fire.

• Use an exclusive power circuit for the equipment.

Insufficient circuit amperage capacity may cause an

electrical shock or fire.

WARNING

• Do not damage or modify the power cable. Damaged

or modified power cables may cause an electrical

shock or fire. Placing heavy items on the power cable

or pulling the power cable may damage the cable.

• Check the unit foundation for damage on a continual

basis, especially if it has been in use for a long time. If

left in a damaged condition, the unit may fall and

cause injury. If the installation platform or frame has

corroded, have it replaced. A corroded platform or

frame may cause the unit to fall resulting in injury.

• If the unit has a power cable plug and it is dirty, clean

the plug before securely inserting it into a power

outlet. If the plug has a loose connection, tighten it or

it may cause electrical shock or fire.

CAUTION

• After replacing the battery in the remote controller,

dispose of the old battery to prevent children from

swallowing it. If a child swallows the battery, see a

doctor immediately.

• Never remove the fan guard of the unit. A fan rotating

at high speed without the fan guard is very

dangerous.

• Before cleaning the unit, stop the operation of the unit

by turning the power off or by pulling the power cable

plug out from its receptacle. Otherwise an electrical

shock or injury may result.

• Do not wipe the controller operation panel with

benzene, thinner, chemical dust cloth, etc. The panel

may get discolored or the coating can peel off. If it is

extremely dirty, soak a cloth in a water-diluted neutral

detergent, squeeze it well, and wipe the panel clean.

Then wipe it with another dry cloth.

SiUS04-924

List of Functions 1

Part 1

List of Functions

1. List of Functions..........................................................................................2

SiUS04-924 List of Functions

2List of Functions

1. List of Functions

Category Functions

FTXS30/36HVJU

RXS30/36HVJU

Category Functions

FTXS30/36HVJU

RXS30/36HVJU

Basic Function Inverter (with Inverter Power Control) Health & Air

Cleaning Air-Purifying Filter —

Operation Limit for Cooling (°FDB)*(0)14~

114.8 Photocatalytic Deodorizing Filter —

Operation Limit for Heating (°FWB) 5~

75 Air-Purifying Filter

with Photocatalytic Deodorizing Function —

PAM Control Titanium Apatite Photocatalytic

Air-Purifying Filter 

Compressor Oval Scroll Compressor — Air Filter (Pre-filter) 

Swing Compressor Wipe-clean Flat Panel 

Rotary Compressor — Washable Grille —

Reluctance DC Motor Mold Proof Operation —

Comfortable

Airflow Power-Airflow Louvers — Heating Dry Operation —

Power-Airflow Dual Louvers Good-Sleep Cooling Operation —

Power-Airflow Diffuser — Timer Weekly Timer 

Wide-Angle Louvers 24-Hour ON/OFF Timer 

Vertical Auto-Swing (horizontal blades)

Louvers (Up and Down) Night Set Mode 

Horizontal Auto-Swing (vertical blades) Fins

(Right and Left) Worry Free

“Reliability &

Durability” Auto-Restart (after Power Failure) 

3-D Airflow Self-Diagnosis (Digital, LED) Display 

Comfort Airflow Mode Wiring Error Check —

Comfort

Control Auto Fan Speed Anticorrosion Treatment of Outdoor Heat

Exchanger 

Indoor Unit Quiet Operation Flexibility

Multi-Split / Split Compatible Indoor Unit —

Night Quiet Mode (Automatic) — Flexible Voltage Correspondence —

Outdoor Unit Quiet Operation (Manual) High Ceiling Application —

INTELLIGENT EYE Chargeless 32ft

Quick Warming Function Either Side Drain (Right or Left) 

Hot-Start Function Power Selection —

Automatic Defrosting 

Low Temperature Cooling Operation

(0°F / –17.7°C)



Operation Automatic Operation 

°F/°C Changeover R/C Temperature Display

(factory setting : °F) 

Program Dry Function Remote

Control 5-Rooms Centralized Controller (Option) 

Fan Only Remote Control Adaptor

(Normal Open-Pulse Contact) (Option) 

Lifestyle

Convenience New POWERFUL Operation (Non-Inverter) — Remote Control Adaptor

(Normal Open Contact) (Option) 

Inverter POWERFUL Operation DIII-NET Compatible (Adaptor) (Option) 

Priority-Room Setting — Remote

Controller Wireless 

Cooling / Heating Mode Lock — Wired 

HOME LEAVE Operation —

ECONO Mode 

Indoor Unit ON/OFF Switch 

Signal Reception Indicator 

R/C with Back Light 

Temperature Display —

Another Room Operation —

Note: : Holding Functions

— : No Functions

: Option

* With optional Wind Baffle (KPW5E112)

SiUS04-924

Specifications 3

Part 2

Specifications

1. Specifications..............................................................................................4

SiUS04-924 Specifications

4 Specifications

1. Specifications

Models Indoor Units FTXS30HVJU FTXS36HVJU

Outdoor Units RXS30HVJU RXS36HVJU

Cooling Heating Cooling Heating

Capacity

Rated (Min.~Max.)

kW 8.8 (3.0~8.8) 10.2 (3.0~10.2) 10.2-10.5 (3.0~10.2-10.5) 10.5-11.1 (3.0~10.5-11.1)

Btu/h 30,000 (10,200~30,000) 34,800 (10,200~34,800) 35,000-36,000

(10,200~35,000-36,000) 36,000-38,000

(10,200~36,000-38,000)

kcal/h 7,570 (2,580~7,570) 8,770 (2,580~8,770) 8,770-9,030

(2,580~8,770-9,030) 9,030-9,550

(2,580~9,030-9,550)

Running Current (Rated) A 13.6-12.2 18.9-17.1 19.4-18.8 18.4-18.4

Power Consumption Rated

(Min.~Max.)

W 2,800 (620~2,800) 3,900 (620~3,900) 4,000~4,300

(620~4,000-4,300) 3,800-4,200

(620~3,800-4,200)

Power Factor (Rated) % 99.0-99.8 99.2-99.2 99.1-99.4 99.3-99.2

COP (Rated) W/W 3.14 (4.84~3.14) 2.62 (4.84~2.62) 2.55-2.44 (4.84~2.55-2.44) 2.76-2.64 (4.84~2.76-2.64)

EER (Rated)

Btu/h·W

10.71 (16.45~10.71) 8.92 (16.45~8.92) 8.75-8.37 (16.45~8.75-

8.37) 9.47-9.05 (16.45~9.47-

9.05)

Energy

Efficiency SEER/HSPF SEER 17 HSPF 8.3 SEER 16.2 HSPF 8.3

Piping

Connections

Liquid inch (mm) 3/8” (9.5 mm) 3/8” (9.5 mm)

Gas inch (mm) 5/8” (15.8 mm) 5/8” (15.8 mm)

Drain inch (mm) 11/16” (17.5 mm) 11/16” (17.5 mm)

Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes

Max. Interunit Piping Length feet (m) 98.4’ (30 m) 98.4’ (30 m)

Max. Interunit Height Difference feet (m) 65.6’ (20 m) 65.6’ (20 m)

Chargeless feet (m) 32’ (10 m) 32’ (10 m)

Amount of Additional Charge of

Refrigerant oz/ft 0.55 0.55

Indoor Units FTXS30HVJU FTXS36HVJU

Front Panel Color White White

Airflow Rate m/min (cfm)

H 20.0 (706) 20.1 (710) 21.8 (770) 22.9 (808)

M 17.3 (611) 17.3 (611) 18.0 (635) 18.6 (657)

L 14.7 (519) 14.7 (519) 14.7 (519) 14.7 (519)

SL 13.4 (473) 13.3 (469) 13.4 (473) 13.3 (469)

Fan Type Cross Flow Fan Cross Flow Fan

Motor Output W 64 64

Speed Steps 5 Steps, Quiet, Auto 5 Steps, Quiet, Auto

Air Direction Control Right, Left, Horizontal, Downward Right, Left, Horizontal, Downward

Air Filter Removable / Washable / Mildew Proof Removable / Washable / Mildew Proof

Running Current (Rated) A 0.38-0.34 0.38-0.34 0.38-0.34 0.38-0.34

Power Consumption (Rated) W 77 77 77 77

Power Factor (Rated) % 97.4-98.5 97.4-98.5 97.4-98.5 97.4-98.5

Temperature Control Microcomputer Control Microcomputer Control

Dimensions (HWD) in (mm) 13-3/8  47-1/4  9-7/16” (340 mm x 1200 x 240 mm) 13-3/8  47-1/4  9-7/16” (340 mm x 1200 x 240 mm)

Packaged Dimensions (HWD) in (mm) 12-13/16 51-9/16  16-7/8” (325 x 1310 x 429 mm) 12-13/16 51-9/16  16-7/8” (325 x 1310 x 429 mm)

Weight Lbs (kg) 38 lbs (17 kg) 38 lbs (17 kg)

Gross Weight Lbs (kg) 51 lbs (23 kg) 51 lbs (23 kg)

Operation

Sound H/M/L/SL dBA 47 / 45 / 40 / 37 47 / 44 / 38 / 35 49 / 45 / 40 / 37 49 / 44 / 38 / 35

Sound Power dBA 63 63 65 65

Outdoor Units RXS30HVJU RXS36HVJU

Casing Color Ivory White Ivory White

Compressor Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type

Model 2YC63HXD 2YC63HXD

Motor Output W 2,030 2,030

Refrigerant Oil Type FVC50K FVC50K

Charge oz 25.5 25.5

Refrigerant Type R-410A R-410A

Charge Lbs 6.17 6.17

Airflow Rate m/min (cfm) HH 81.2 (2,867) — 81.2 (2,867) —

H 74.4 (2,627) 74.4 (2,627) 74.4 (2,627) 74.4 (2,627)

SL 65.6 (2,316) 65.6 (2,316) 65.6 (2,316) 65.6 (2,316)

Fan Type Propeller Propeller

Motor Output W 200 200

Running Current (Rated) A 13.22-11.86 18.52-16.76 19.02-18.46 18.02-18.06

Power Consumption (Rated) W 2,723 3,823 3.923-4,223 3,723-4,123

Power Factor (Rated) % 99.0-99.8 99.2-99.2 99.2-99.5 99.3-99.3

Starting Current A 18.9 19.4

Dimensions (HWD) in (mm) 38-15/16 37  12-5/8” (989 x 940 x 321 mm) 38-15/16 37  12-5/8” (989 x 940 x 321 mm)

Packaged Dimensions (HWD) in (mm) 44-1/8 38  15-1/4” (1121 x 965 x 387 mm) 44-1/8 38  15-1/4” (1121 x 965 x 387 mm)

Weight Lbs (kg) 178 (81 kg) 178 (81 kg)

Gross Weight Lbs (kg) 198 (90 kg) 198 (90 kg)

Operation

Sound H/SL dBA 54 / 51 55 / 51 54 / 51 55 / 51

Sound Power H dBA 68 69 68 69

Drawing No. 3D063298A 3D063299A

60Hz 208-230V

Specifications SiUS04-924

Specifications 5

Note: The data are based on the conditions shown in the table below.

Conversion Formulae

kcal/h=kW860

Btu/h=kW3414

cfm=m/min35.3

Cooling Heating Piping Length

Indoor ; 80°FDB/67°FWB

Outdoor ; 95°FDB/75°FWB Indoor ; 70°FDB/60°FWB

Outdoor ; 47°FDB/43°FWB 25ft (7.5 m)

SiUS04-924

6Printed Circuit Board Connector Wiring Diagram

Part 3

Printed Circuit Board

Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram........................................7

1.1 Indoor Unit.................................................................................................... 7

1.2 Outdoor Unit................................................................................................. 9

SiUS04-924 Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram 7

1. Printed Circuit Board Connector Wiring Diagram

1.1 Indoor Unit

Connectors PCB (1) (Control PCB)

PCB (2) (Signal Receiver PCB)

PCB (3) (Display PCB)

Note: Other designations

PCB (1) (Control PCB)

PCB (3) (Display PCB)

1) S1 Connector for DC fan motor

2) S21 Connector for centralized control (HA)

3) S25 Connector for INTELLIGENT EYE sensor

4) S32 Connector for heat exchanger thermistor

5) S41 Connector for swing motor

6) S46 Connector for display PCB

7) S47 Connector for signal receiver PCB

1) S48 Connector for control PCB

1) S49 Connector for control PCB

1) V1 Varistor

2) JA Address setting jumper

JB Fan speed setting when compressor is OFF on thermostat

JC Power failure recovery function (auto-restart)

Refer to page 184 for detail.

3) LED A LED for service monitor (green)

4) FU1 Fuse (3.15A)

1) SW1 (S1W) Forced operation ON / OFF switch

2) LED1 LED for operation (green)

3) LED2 LED for timer (yellow)

4) LED3 LED for INTELLIGENT EYE (green)

5) RTH1 (R1T) Room temperature thermistor

Printed Circuit Board Connector Wiring Diagram SiUS04-924

8Printed Circuit Board Connector Wiring Diagram

PCB Detail PCB (1): Control PCB

PCB (2): Signal Receiver PCB PCB (3): Display PCB

2P227881-1B

S41

S47 JC JBS21

S46

S25

S32

LED A FU1 V1

3P224121-1A

S48

3P224121-1A

RTH1 SW1

LED3 LED2 LED1

S49

SiUS04-924 Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram 9

1.2 Outdoor Unit

Connectors PCB (1) (Main PCB)

PCB (2) (Service Monitor PCB)

Note: Other Designations

PCB (1) (Main PCB)

PCB (2) (Service Monitor PCB)

1) S10 Connector for terminal strip (indoor-outdoor transmission)

2) S20 Connector for electronic expansion valve coil

3) S40 Connector for overload protector

4) S51, S101 Connector for service monitor PCB

5) S70 Connector for fan motor

6) S80 Connector for four-way valve coil

7) S90 Connector for thermistors

(outdoor air, heat exchanger, discharge pipe)

8) AC1, AC2 Connector for terminal strip (power supply)

9) HR1, HR2 Connector for reactor

1) S52, S102 Connector for control PCB

1) FU1 Fuse (30A)

2) FU2, FU3 Fuse (3.15A)

1) LED A Service monitor LED (green)

2) SW1 Forced operation ON/OFF switch

3) SW4 Switch A : No function

Switch B : Facility setting switch

*Refer to page 42 for detail

Switch C : Defrost operation gets powerful

Printed Circuit Board Connector Wiring Diagram SiUS04-924

10 Printed Circuit Board Connector Wiring Diagram

PCB Detail PCB (1): Main PCB

PCB (2): Service Monitor PCB

(R9653)

AC1 FU2 (3.15A)

AC2

HR1

HR2

FU1

(30A)

S10

S80

S90 S20 S70 S40 S51 FU3 (3.15A)

S101

S102SW1 SW4

3P169059

LED A S52

SiUS04-924

Function and Control 11

Part 4

Function and Control