Daikin Quaternity FTXG09HVJU User manual

1645 Wallace Drive, Suite 110
Carrollton, TX75006
inf[email protected]
www.daikinac.com
AMERICAS
Specifications, designs and other content appearing in this brochure are current as of May 2009 but subject to change without notice.
SiUS04-921
Printed in U.S.A. 05/2009 B AK
SiUS04-921
Service Manual / Inverter Pair Wall Mounted Type H-Series
[Applied Models]
Inverter Pair : Heat Pump
Inverter Pair
Wall Mounted Type H-Series
SiUS04-921

SiUS04-921
Table of Contents i
Inverter Pair
Wall Mounted Type
H-Series
Heat Pump
Indoor Units
FTXG09HVJU
FTXG12HVJU
FTXG15HVJU
Outdoor Units
RXG09HVJU
RXG12HVJU
RXG15HVJU
1. SAFETY CONSIDERATIONS............................................................... vi
Part 1
List of Functions ................................................................ 1
1. Functions.................................................................................................2
Part 2
Specifications .................................................................... 3
1. Specifications ..........................................................................................4
Part 3
Printed Circuit Board
Connector Wiring Diagram ................................................. 7
1. Printed Circuit Board Connector Wiring Diagram....................................8
1.1 Indoor Unit................................................................................................8
1.2 Outdoor Unit ...........................................................................................10

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ii Table of Contents
Part 4
Function and Control........................................................ 11
1. Description of Operation .......................................................................12
1.1 Indoor Unit..............................................................................................12
1.2 Outdoor Unit ...........................................................................................13
2. Main Functions......................................................................................14
2.1 QUATERNITY Drying Operation............................................................14
2.2 Comfort Sleep Operation........................................................................16
2.3 Automatic Operation...............................................................................18
2.4 Comfort Airflow Mode.............................................................................19
2.5 Cooling Breeze Operation ......................................................................20
2.6 Power-airflow Dual FlapsFins.................................................................21
2.7 Wide-angle LouversFins.........................................................................21
2.8 3-D Airflow..............................................................................................22
2.9 POWERFUL Operation ..........................................................................23
2.10 Indoor Unit Quiet Operation ...................................................................23
2.11 Multi-colored Indicator Lamp ..................................................................24
2.12 Monitor Brightness Setting .....................................................................24
2.13 Information Display.................................................................................25
2.14 Mold-Proof Stick .....................................................................................26
2.15 FLASH STREAMER AIR PURIFYING Operation ..................................27
2.16 Wipe-clean Flat Panel ............................................................................29
2.17 Filter Cleaning Indicator (Remote Controller).........................................30
2.18 TIMER Operation ...................................................................................30
2.19 Night Set Mode.......................................................................................31
2.20 Table for Special Modes.........................................................................32
2.21 Thermostat Control.................................................................................33
2.22 Fan Speed Control for Indoor Units........................................................34
2.23 Draft Prevention (Hot-Start)....................................................................36
3. Control Specification .............................................................................37
3.1 Frequency Control..................................................................................37
3.2 Preheating Operation (Quick Warming Function) ..................................38
3.3 Four Way Valve Operation .....................................................................38
3.4 Compressor Start-up Protection.............................................................39
3.5 Fan Speed Control for Outdoor Unit.......................................................40
3.6 Fin Thermistor Control............................................................................41
3.7 Input Current Control..............................................................................41
3.8 Peak-cut Control.....................................................................................42
3.9 Indoor Heat Exchanger Freeze-up Protection........................................43
3.10 Dew Prevention ......................................................................................44
3.11 Liquid Compression Protection 2 ...........................................................45
3.12 Discharge Pipe Temperature Control.....................................................45
3.13 Automatic Defrosting ..............................................................................46
3.14 Electronic Expansion Valve Control .......................................................47

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Table of Contents iii
Part 5
System Configuration....................................................... 53
1. Installation Manual ................................................................................54
1.1 Indoor Units ............................................................................................54
1.2 Outdoor Units .........................................................................................64
2. System Configuration............................................................................70
3. Instruction..............................................................................................71
3.1 Remote Controller ..................................................................................71
3.2 Cooling · QUATERNITY DRYING Operation ........................................73
3.3 Heating Operation ..................................................................................74
3.4 AUTO Operation.....................................................................................75
3.5 FLASH STREAMER AIR PURIFYING · POWERFUL Operation ...........76
3.6 Adjusting Airflow Direction · Airflow Rate ...............................................77
3.7 COMFORT AIRFLOW · COOLING BREEZE Operation ........................78
3.8 TIMER Operation ...................................................................................79
3.9 COMFORT SLEEP Operation................................................................80
3.10 SET UP · CHILD PROOF LOCK ............................................................81
3.11 INFORMATION DISPLAY ......................................................................82
Part 6
Service Diagnosis............................................................ 83
1. Convenient Service Check Function .....................................................85
2. Troubleshooting ....................................................................................87
2.1 Error Code Indication by Remote Controller ..........................................87
2.2 Air conditioner does not run. ..................................................................88
2.3 Air conditioner runs but does not cool or heat .......................................91
2.4 When operation starts, safety breaker trips............................................93
2.5 Air conditioner makes a loud sound and vibrates...................................95
2.6 Indoor Unit PCB Abnormality .................................................................96
2.7 Peak-cut Control or Freeze-up Protection..............................................97
2.8 Fan Motor System (DC Motor) Abnormality ...........................................99
2.9 Streamer Unit Abnormality ...................................................................101
2.10 Thermistor System Abnormality ...........................................................103
2.11 Front Panel Open / Close Abnormality.................................................104
2.12 Humidity Sensor Abnormality ...............................................................105
2.13 Signal Transmission Error (Indoor Unit - Outdoor Unit) .......................106
2.14 Incompatible Power Supply between Indoor Unit and Outdoor Unit ....108
2.15 Outdoor Unit PCB Abnormality.............................................................109
2.16 OL Activation (Compressor Overload) .................................................110
2.17 Compressor Lock .................................................................................111
2.18 DC Fan Lock ........................................................................................112
2.19 Input Overcurrent Detection .................................................................113
2.20 Four-Way Valve Abnormality................................................................115
2.21 Discharge Pipe Temperature Control...................................................117
2.22 High Pressure Control in Cooling .........................................................118

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iv Table of Contents
2.23 Compressor Sensor System Abnormality ............................................120
2.24 Position Sensor Abnormality ................................................................121
2.25 DC Voltage / DC Current Sensor Abnormality .....................................123
2.26 Thermistor System Abnormality ...........................................................124
2.27 Abnormal Temperature in Electrical Box..............................................126
2.28 Temperature Rise in Radiation Fin.......................................................128
2.29 Output Overcurrent...............................................................................130
2.30 Insufficient Gas.....................................................................................132
2.31 Over Voltage Protection / Low Voltage Protection ...............................134
2.32 Outdoor Unit PCB Abnormality or Communication Circuit Abnormality135
2.33 Signal Transmission Error on Outdoor Unit PCB .................................138
2.34 Lights-out of Microcomputer Status Lamp............................................140
3. Check ..................................................................................................141
3.1 Thermistor Resistance Check ..............................................................141
3.2 Installation Condition Check.................................................................142
3.3 Outdoor Fan System Check (DC Motor) ..............................................142
3.4 Power Supply Waveform Check...........................................................143
3.5 Main Circuit Electrolytic Capacitor Check ............................................143
3.6 Refrigerant System Check ...................................................................144
3.7 “Inverter Checker” Check .....................................................................145
3.8 Power Transistor Check .......................................................................146
3.9 Discharge Pressure Check...................................................................147
3.10 Electronic Expansion Valve Check.......................................................148
3.11 Indoor Unit PCB Output Check ............................................................149
3.12 Rotating Pulse Input on Outdoor Unit PCB Check ...............................150
3.13 Humidity Sensor Check........................................................................151
3.14 Main Circuit Short Check......................................................................151
3.15 Four-Way Valve Performance Check...................................................152
3.16 Solenoid Valve for Dehumidification Check .........................................153
Part 7
Removal Procedure ........................................................ 155
1. Indoor Unit...........................................................................................156
1.1 Removal of Air Filters / Front panel......................................................156
1.2 Removal of Upper Panel ......................................................................163
1.3 Removal of Front Grille ........................................................................166
1.4 Removal of Assembly of Open/Close Mechanism ...............................169
1.5 Removal of Assembly of Reduction Motor ...........................................171
1.6 Removal of Electrical Box ....................................................................174
1.7 Removal of PCB...................................................................................179
1.8 Removal of Dehumidifying Solenoid Valve Coil ...................................185
1.9 Removal of Drain Hose ........................................................................186
1.10 Removal of Swing Motor ......................................................................188
1.11 Removal of Heat Exchanger ................................................................190
1.12 Removal of Propeller Fan / Fan Motor .................................................193
1.13 Removal of Horizontal Blades / Vertical Blades ...................................196
1.14 Removal of Streamer Unit ....................................................................199

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Table of Contents v
2. Outdoor Unit........................................................................................203
2.1 How to Check the Service Monitor (LED A) .........................................203
2.2 Removal of Propeller Fan / Fan Motor .................................................205
2.3 Removal of Electrical Box ....................................................................210
2.4 Removal of PCB...................................................................................214
2.5 Removal of Sound Blanket...................................................................218
2.6 Removal of Thermistor Assembly ........................................................220
2.7 Removal of Reactor / Partition Plate ....................................................222
2.8 Removal of Four Way Valve.................................................................224
2.9 Removal of the Expansion Valve .........................................................226
2.10 Removal of Compressor.......................................................................228
Part 8
Others Additional Information ....................................... 231
1. Additional Information .........................................................................232
1.1 Trial Operation......................................................................................232
1.2 Field Setting .........................................................................................233
1.3 Application of Silicon Grease to a Power Transistor and a Diode Bridge234
Part 9
Appendix......................................................................... 235
1. Piping Diagrams..................................................................................236
1.1 Indoor Units ..........................................................................................236
1.2 Outdoor Units .......................................................................................236
2. Wiring Diagrams..................................................................................237
2.1 Indoor Units ..........................................................................................237
2.2 Outdoor Units .......................................................................................237
Index ............................................................................................. i

SiUS04-921 Safety Considerations
vi Safety
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
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. If it 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).
Insufficient safety measures may cause a fall resulting
in 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) such as air. Any presence of air
or 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

Safety Considerations SiUS04-921
Safety Considerations vii
leaking into the room. The refrigerant gas itself is
harmless, but it 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.

SiUS04-921 Safety Considerations
viii Safety

SiUS04-921
List of Functions 1
Part 1
List of Functions
1. Functions.................................................................................................2