Daikin ARXN50M User manual

Category
Split-system air conditioners
Type
User manual

This manual is also suitable for

SERVICE MANUAL
Inverter Wall Mounted Single Split
dd
SM-5WM-Y-EU-A3
MODELS
FTXN25/35/50/60L RXN25/35/50/60L
FTXN25/35/50/60M RXN25/35/50/60M
FTXK25/35/50/60A RXK25/35/50/60A
FTXN25/35/50/60N RXN25/35/50/60N
FTXC25/35/50/60A RXC25/35/50/60A
FTXB50/60A RXB50/60A
FTXB50/60B RXB50/60B
FTXB50/60C RXB50/60C
ATXN25/35/50/60L ARXN25/35/50/60L
ATXN25/35/50/60M ARXN25/35/50/60M
ATXN25/35/50/60N ARXN25/35/50/60N
ATXB50/60C ARXB50/60C
Table of Contents
Table of Contents
1.0 Inverter Single Split ...................................................................................................... 1
1.1 Product line-up ........................................................................................................1
1.2 Printed Circuit board (PCB) connector wiring diagram ............................................ 4
1.3 Piping Length & Elevation .....................................................................................17
2.0 Function & Control .....................................................................................................18
2.1 Temperature Control ..............................................................................................18
2.2 Cooling and Heating Mode Operation ...................................................................18
2.3 Fan Mode ..............................................................................................................18
2.4 Auto Mode .............................................................................................................19
2.5 Cold Draft Prevention ............................................................................................20
2.6 Sleep Mode ...........................................................................................................20
2.7 Quiet Function........................................................................................................21
2.8 Eco+ Function.........................................................................................................21
2.9 ID-OD Communication ..........................................................................................21
2.10 Thermistors in RXN,RXB,RXC,ARXN,ARXB .....................................................22
2.11 Minimum Off Time Control ...................................................................................22
2.12 Auto Restart ........................................................................................................ 22
2.13 Auto Random Restart ..........................................................................................22
2.14 Four Way Valve Control ....................................................................................... 24
2.15 Outdoor Fan Control ............................................................................................ 24
2.16 Rotation Regulating Functions ............................................................................24
2.17 Defrost Cycle .......................................................................................................26
2.18 Indoor Coil Freeze Prevention ............................................................................. 26
2.19 High Pressure Protection .....................................................................................27
2.20 Discharge Pipe Temperature Control ..................................................................27
2.21 Oil Recovery Control (Applicable for ARXN,RXN50/60L) .................................... 28
2.22 Overall Current Control ........................................................................................28
3.0 Service Diagnosis.......................................................................................................29
3.1 Error Indication from Indoor ................................................................................... 29
3.2 Error code retrieved by handset.............................................................................32
3.3 Error Indication from Outdoor ................................................................................34
3.4 Error code description for Inverter .........................................................................36
Table of Contents
ii
4.0 Wiring Connection ......................................................................................................64
5.0 Refrigerant Diagram ...................................................................................................70
6.0 Appendix A ..................................................................................................................72
Table of Contents
Safety Cautions
Caution and warnings
• Be sure to read the following safety cautions before conducting repair work.
• Thecautionitemsareclassiedinto“ Warning”and“ Caution”.The“ Warning” items are
especially important since they can lead to death or serious injury if they are not followed closely. The
Caution” items can also lead to serious accidents under some conditions if they are not followed.
Therefore, be sure to observe all the safety caution items described below.
• About the pictograms
This symbol indicates an item for which caution must be exercised.
The pictogram shows the item to which attention must be paid.
This symbol indicates a prohibited action.
The prohibited item or action is shown inside or near the symbol.
This symbol indicates an action that must be taken, or an instruction.
The instruction is shown inside or near the symbol.
• After the repair work is complete, be sure to conduct a test operation to ensure that the equipment
operates normally, and explain the cautions for operating the product to the customer.
Caution in Repair
Warning
Be sure to disconnect the power cable plug from the plug socket before disassembling the
equipment for a repair.
Working on the equipment that is connected to a power supply can cause an electrical
shock.
If it is necessary to supply power to the equipment to conduct the repair or inspecting the
circuits, do not touch any electrically charged sections of the equipment.
If the refrigerant gas discharges during the repair work, do not touch the discharging
refrigerant gas.
The refrigerant gas can cause frostbite.
When disconnecting the suction or discharge pipe of the compressor at the welded
section,releasetherefrigerantgascompletelyatawell-ventilatedplacerst.
If there is a gas remaining inside the compressor, the refrigerant gas or refrigerating
machine oil discharges when the pipe is disconnected, and it can cause injury.
If the refrigerant gas leaks during the repair work, ventilate the area. The refrigerant gas
cangeneratetoxicgaseswhenitcontactsames.
The step-up capacitor supplies high-voltage electricity to the electrical components of the
outdoor unit.
Be sure to discharge the capacitor completely before conducting repair work. A charged
capacitor can cause an electrical shock.
Do not start or stop the air conditioner operation by plugging or unplugging the power
cable plug.
Plugging or unplugging the power cable plug to operate the equipment can cause an
electricalshockorre.
Table of Contents
iv
Caution
Do not repair the electrical components with wet hands.
Working on the equipment with wet hands can cause an electrical shock.
Do not clean the air conditioner by splashing water.
Washing the unit with water can cause an electrical shock.
Be sure to provide the grounding when repairing the equipment in a humid or wet place, to
avoid electrical shocks.
Be sure to turn off the power switch and unplug the power cable when cleaning the
equipment.
The internal fan rotates at a high speed, and cause injury.
Do not tilt the unit when removing it.
Thewaterinsidetheunitcanspillandwetthefurnitureandoor.
Besuretocheckthattherefrigeratingcyclesectionhascooleddownsufcientlybefore
conducting repair work.
Working on the unit when the refrigerating cycle section is hot can cause burns.
Use the welder in a well-ventilated place.
Usingthewelderinanenclosedroomcancauseoxygendeciency.
Table of Contents
Cautions Regarding Products after Repair
Warning
Be sure to use parts listed in the service parts list of the applicable model and appropriate
tools to conduct repair work. Never attempt to modify the equipment.
The use of inappropriate parts or tools can cause an electrical shock, excessive heat
generationorre.
Whenrelocatingtheequipment,makesurethatthenewinstallationsitehassufcient
strength to withstand the weight of the equipment.
Iftheinstallationsitedoesnothavesufcientstrengthandiftheinstallationworkisnot
conducted securely, the equipment can fall and cause injury.
Be sure to install the product correctly by using the provided standard installation frame.
Incorrect use of the installation frame and improper installation can cause the equipment
to fall, resulting in injury.
For integral
units only
Be sure to install the product securely in the installation frame mounted on a window
frame.
If the unit is not securely mounted, it can fall and cause injury.
For integral
units only
Be sure to use an exclusive power circuit for the equipment, and follow the technical
standards related to the electrical equipment, the internal wiring regulations and the
instruction manual for installation when conducting electrical work.
Insufcientpowercircuitcapacityandimproperelectricalworkcancauseanelectrical
shockorre.
Besuretousethespeciedcabletoconnectbetweentheindoorandoutdoorunits.Make
the connections securely and route the cable properly so that there is no force pulling the
cable at the connection terminals.
Improperconnectionscancauseexcessiveheatgenerationorre.
When connecting the cable between the indoor and outdoor units, make sure that the
terminal cover does not lift off or dismount because of the cable.
If the cover is not mounted properly, the terminal connection section can cause an
electricalshock,excessiveheatgenerationorre.
Do not damage or modify the power cable.
Damagedormodiedpowercablecancauseanelectricalshockorre.
Placing heavy items on the power cable, and heating or pulling the power cable can
damage the cable.
Donotmixairorgasotherthanthespeciedrefrigerant(R-410A)intherefrigerant
system.
If air enters the refrigerating system, an excessively high pressure results, causing
equipment damage and injury.
If the refrigerant gas leaks, be sure to locate the leak and repair it before charging the
refrigerant. After charging refrigerant, make sure that there is no refrigerant leak.
If the leak cannot be located and the repair work must be stopped, be sure to perform
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 can generate toxic gases when it
contactsames,suchasfanandotherheaters,stovesandranges.
When replacing the coin battery in the remote controller, be sure to disposed of the old
battery to prevent children from swallowing it.
If a child swallows the coin battery, see a doctor immediately.
Table of Contents
vi
Caution
Installation of a leakage breaker is necessary in some cases depending on the conditions
of the installation site, to prevent electrical shocks.
Do not install the equipment in a place where there is a possibility of combustible gas
leaks.
Ifacombustiblegasleaksandremainsaroundtheunit,itcancauseare.
Be sure to install the packing and seal on the installation frame properly.
If the packing and seal are not installed properly, water can enter the room and wet the
furnitureandoor.
Inspection after Repair
Warning
Check to make sure that the power cable plug is not dirty or loose, then insert the plug into
a power outlet all the way.
Iftheplughasdustorlooseconnection,itcancauseanelectricalshockorre.
If the power cable and lead wires have scratches or deteriorated, be sure to replace them.
Damagedcableandwirescancauseanelectricalshock,excessiveheatgenerationorre.
Do not use a joined power cable or extension cable, or share the same power outlet
with other electrical appliances, since it can cause an electrical shock, excessive heat
generationorre.
Caution
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cancauseexcessiveheatgeneration,reoran
electrical shock.
If the installation platform or frame has corroded, replace it.
Corroded installation platform or frame can cause the unit to fall, resulting in injury.
Check the grounding, and repair it if the equipment is not properly grounded. Improper
grounding can cause an electrical shock.
Be sure to measure the insulation resistance after the repair, and make sure that the
resistance is 1 Mohm or higher.
Faulty insulation can cause an electrical shock.
Be sure to check the drainage of the indoor unit after the repair.
Faultydrainagecancausethewatertoentertheroomandwetthefurnitureandoor.
Inverter Single Split
1
1.0 Inverter Single Split
1.1 Product line-up
1.1.1 Indoor Unit
Nomenclature
Classication
Handset
PCB
AirPurication
Marking
Others
BRC52A61
BRC52B63
W_2_03C
W_2_03D
W_2_03E
W_2_03E_M
W_2_04A
W_2_04B
Saranet Filter
Titanium Apatite
CE
GOST
EAC
Auto Restart
FTXN25/35LV1B X X X X X X X
FTXN50/60LV1B X X X X X X X
ATXN25/35LV1B X X X X X
ATXN50/60LV1B X X X X X
FTXB50/60AV1B X X X X X
FTXB50/60BV1B X X X X X
FTXN25/35MV1 X X X X X X X
FTXN50/60MV1 X X X X X X X
FTXN25/35MV1B X X X X X X X
FTXN50/60MV1B X X X X X X X
FTXN25/35MV1B9 X X X X X
FTXN50/60MV1B9 X X X X X
ATXN25/35MV1B X X X X X
ATXN50/60MV1B X X X X X
ATXN25/35MV1B7 X X X X X X
ATXN50/60MV1B7 X X X X X X
ATXN25/35MV16 X X X X X X
ATXN50/60MV16 X X X X X X
FTXK25/35AV1BW X X X X X X
FTXK50/60AV1BW X X X X X X
FTXK25/35AV1BS X X X X X X
FTXK50/60AV1BS X X X X X X
FTXN25/35NV1B X X X X X X
FTXN50/60NV1B X X X X X X
Inverter Single Split
2
1.1.1 Indoor Unit
Nomenclature
Classication
Handset
PCB
AirPurication
Marking
Others
BRC52A61
BRC52B63
W_2_03C
W_2_03D
W_2_03E
W_2_03E_M
W_2_04A
W_2_04B
Saranet Filter
Titanium Apatite
CE
GOST
EAC
Auto Restart
ATXN25/35NV1B X X X X X X
ATXN50/60NV1B X X X X X X
ATXN25/35NV1B9 X X X X X X
ATXN50/60NV1B9 X X X X X X
ATXN25/35NV1B7 X X X X X
ATXN50/60NV1B7 X X X X X
FTXB50/60CV1B X X X X X X X
ATXB50/60CV1B X X X X X X
FTXC25/35AV1B X X X X X X
FTXC50/60AV1B X X X X X X
Inverter Single Split
3
1.1.2 Outdoor Unit
Nomenclature
Classication
PCB
Refrigerant
Control
Fin
Compressor
Marking
Others
OYL Board
DKR Board
EXV
Hydrophilic (Blue)
Hydrophilic (Gold)
DC Inverter Swing
CE
GOST
EAC
Drain Elbow
RXN25/35LV1B9 X X X X X X X
RXN50/60LV1B9 X X X X X X X
ARXN25/35LV1B X X X X X X
ARXN50/60LV1B X X X X X X
RXB50/60AV1B X X X X X X
RXB50/60BV1B X X X X X X
RXN25/35MV1 X X X X X X X
RXN50/60MV1 X X X X X X X
RXN25/35MV1B X X X X X X X
RXN50/60MV1B X X X X X X X
RXN25/35MV1B9 X X X X X X
RXN50/60MV1B9 X X X X X X
ARXN25/35MV1B X X X X X X
ARXN50/60MV1B X X X X X X
ARXN25/35MV1B7 X X X X X X X
ARXN50/60MV1B7 X X X X X X X
ARXN25/35MV16 X X X X X X
ARXN50/60MV16 X X X X X X
RXK25/35AV1B X X X X X X X
RXK50/60AV1B X X X X X X X
RXN25/35NV1B X X X X X X
RXN50/60NV1B X X X X X X
ARXN25/35NV1B X X X X X X
ARXN50/60NV1B X X X X X X
ARXN25/35NV1B9 X X X X X X
ARXN50/60NV1B9 X X X X X X
RXB50/60CV1B X X X X X X X
ARXB50/60CV1B X X X X X X
RXC25/35AV1B X X X X X X
RXC50/60AV1B X X X X X X
Inverter Single Split
4
1.2 Printed Circuit board (PCB) connector wiring diagram
1.2.1 Indoor PCB: FTXN25/35L, FTXN25/35MV1, FTXN25/35MV1B9, ATXN25/35L,
ATXN25/35MV1B, ATXN25/35MV1B7
1.2.1.1 Main PCB: W_2_03C
Item Indication on PCB Description
1 A1 Connector for fan motor
2 A2 Connector for swing motor
3 A3 Connector for fan motor feedback
4 A4 Fuse
5 A5 Varistor
6 A6 Connector for wired handset
7 A7 Connector for signal receiver PCB
8 A8 Connector for heat exchanger thermistor
A4
A5
A1 A2 A3
A6
A7
A8
Inverter Single Split
5
1.2.1.2 Signal board
Item Indication on PCB Description
1 A1 Operational LED
2 A2 Connector for Control PCB
3 A3 Handset signal receiver
4 A4 Operation ON/OFF switch
5 A5 Buzzer
Applicable Model :
FTXN25/35L, FTXN25/35MV1, FTXN25/35MV1B9,
ATXN25/35L, ATXN25/35MV1B, ATXN25/35MV1B7
Inverter Single Split
6
1.2.2 Indoor PCB: FTXN25/35MV1B, FTXN25/35N, FTXK25/35A, FTXC25/35A,
ATXN25/35MV16, ATXN25/35N
1.2.2.1 Main PCB: W_2_03D ; W_2_03E ; W_2_03E_M
Item Indication on PCB Description
1 A1 Connector for fan motor
2 A2 Connector for swing motor
3 A3 Connector for fan motor feedback
4 A4 Fuse
5 A5 Varistor
6 A6 Connector for wired handset
7 A7 Connector for signal receiver PCB
8 A8 Connector for heat exchanger thermistor
A1 A2 A3
A4
A5
A6
A7
A8
Inverter Single Split
7
1.2.2.2 Signal board
Item Indication on PCB Description
1 A1 Operational LED
2 A2 Connector for Control PCB
3 A3 Handset signal receiver
4 A4 Operation ON/OFF switch
5 A5 Buzzer
A1
A2
A3
A4
A5
Applicable Model :
FTXK25/35A
Applicable Model :
FTXN25/35MV1B, FTXN25/35N,
FTXC25/35A, ATXN25/35MV16,
ATXN25/35N
Inverter Single Split
8
1.2.3 Indoor PCB: FTXB50/60A, FTXB50/60B, FTXB50/60C, FTXN50/60L, FTXN50/60M,
FTXN50/60N, FTXK50/60A, FTXC50/60A, ATXB50/60C, ATXN50/60L,
ATXN50/60M, ATXN50/60N
1.2.3.1 Main PCB: W_2_04A ; W_2_04B
Item Indication on PCB Description
1 A1 Connector for fan motor
2 A2 Connector for swing motor
3 A3 Connector for fan motor feedback
4 A4 Fuse
5 A5 Varistor
6 A6 Connector for wired handset
7 A7 Connector for signal receiver PCB
Inverter Single Split
9
1.2.3.2 Signal board
Item Indication on PCB Description
1 A1 Operational LED
2 A2 Connector for Control PCB
3 A3 Handset signal receiver
4 A4 Operation ON/OFF switch
5 A5 Buzzer
A1
A2
A3
A4
A5
Applicable Model :
FTXK50/60A
Applicable Model :
FTXB50/60A, FTXB50/60B, FTXB50/60C,
FTXN50/60L, FTXN50/60M, FTXN50/60N,
FTXC50/60A
ATXB50/60C, ATXN50/60L, ATXN50/60M,
ATXN50/60N
Inverter Single Split
10
1.2.4 Outdoor PCB: RXN25/35N, RXK25/35A, RXC25/35A, ARXN25/35MV1B7,
ARXN25/35MV16, ARXN25/35N
1.2.4.1 Main PCB
Item Indication on PCB Description
1S11 Connector for S10 on main PCB
2 HL1, HN1, S Connector for terminal board
3 E1, E2 Terminal for earth wire
4 HL2, HN2 Connector for HL3 HN3 on main PCB
5 HL4, HN4 Connector for S12 on main PCB
6 FU1 Fuse (3.15A, 250V)
7 FU3 Fuse (30A, 250V)
8 V2, V3 Varistor
Inverter Single Split
11
1.2.5 Outdoor PCB: RXN25/35L, RXN25/35MV1, RXN25/35MV1B, RXN25/35MV1B9,
ARXN25/35L, ARXN25/35MV1B
1.2.5.1 Filter PCB
Item Indication on PCB Description
1S11 Connector for indoor PCB
2 FU3 Fuse (20A)
3 V2, V3 Varistor
Inverter Single Split
12
1.2.5.2 Main PCB
Item Indication on PCB Description
1 S10 ConnectorforlterPCB
2 S20 Connector for electronic expansion valve coil
3 S40 Connector for overload protector
4 S70 Connector for fan motor
5 S80 Connector for four way valve coil
6 S90 Connector for thermistors (outdoor temperature,
outdoor heat exchanger, discharge pipe)
7 HL3, HN3 ConnectorforlterPCB
8 FU1, FU2 Fuse (3.15A)
9LED A Service monitor LED (green)
10 V1 Varistor
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Daikin ARXN50M User manual

Category
Split-system air conditioners
Type
User manual
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