Samsung AR09TXFCAWKNEU User manual

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This Service Manual is a propert of Samsung Electronics Co., Ltd.
Any unauthorized use of Manual can be punished under
applicable International and/or domestic law.
© Samsung Electronics Co., Ltd.
November 2018

SERVICE MANUAL
SPLIT-TYPE AIR CONDITIONER
AIR CONDITIONER CONTENTS
AR09TXFCAWKNEU AR09TXFCAWKXEU
AR12TXFCAWKNEU AR12TXFCAWKXEU
AR24TXEAAWKNEU AR24TXEAAWKXEU
1. Precautions
2. Product Specications
3. Alignment and Adjustments
4. Disassembly and Reassembly
5. ASSY CONTROL
6. ELECTRICAL PART LIST
7. Wiring Diagram
8. PCB Diagram
9. Operating Instructions
10. Troubleshooting
11. Block Diagram
12. Reference Sheet
AR09TXFCAWKNEU
AR12TXFCAWKNEU
AR09TXFCAWKXEU
AR12TXFCAWKXEU
AR24TXEAAWKNEU
AR24TXEAAWKNEU

2SAMSUNG ELECTRONICS
Contents
1. Precautions 4
1-1 Installing the air conditioner 4
1-2 Power supply and circuit breaker 4
1-3 During operation 4
1-4 Disposing of the unit 5
1-5 Others 5
2. Product specification 6
2-1 The Feature of Product 6
2-2 Product Specifications 7
2-3 The Comparative Spe cations of Product 8
2-4 Accessory and Option Specifications 9
3. Alignment and Adjustments 10
3-1 Test Mode 10
3-2 Display Error and Check Method 11
3-3 Setting Option Setup Method 13
4. Disassembly and Reassembly 17
4-1. Indoor Unit 18
4-2. Outdoor Unit 28
5. ASSY CONTROL 40
5 -1 ASSY KIT CODE DB92-04845Q 40
5 -2 ASSY KIT CODE DB92-04842A 41
5 -3 ASSY KIT CODE DB92-04843A 43
6. Electrical Parts List 45
6 -1 INDOOR MAIN PCB - DB92-04839A 45
6 -2 ASSY PCB DISPLAY - DB92-04833B 54
6 -3 ASSY MODULE- DB92-04837A 58
6 -4 ASSY PCB INVERTER DB92-04838A 63
7. Wiring Diagram 77
7-1 Indoor Unit 77
7-1 Outdoor Unit 78

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8. PCB Diagram 79
8-1 Indoor Main PCB-DB92-04839A 79
8-2 Outdoor PCB-DB92-04837A 80
8-3 Outdoor PCB-DB92-04838A 82
8-4 DISPLAY PCB-DB92-04833B 83
8-5 Wire connecting the indoor unit terminal blocksl 84
9. Operating Instructions 85
9-1 Name of Each Part 85
9-2 Wireless Remote Control-Buttons and Display 86
10. Troubleshooting 87
10-1 Items to be checked First 87
10-2 Communication Error 88
11. Block Diagram 106
11-1 Indoor unit 106
11-2 Outdoor unit 107
12. Reference Sheet 110
12-1 Low Refrigerant Pressure Distribution 110
12-2 Pressure & Capacity mark 110
12-3 Q & A for Non-trouble 111
12-4 Cleaning /Filter Change 114
12-5 Installation 118
12-6 Installation Diagram of Indoor Unit and Outdoor Unit 119
12-7 Reference sheet 122

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1. Precautions
1-1 Installing the air conditioner
•Uses should not install the air conditioner by themselves. Ask the dealer or authorized company to
install the air conditioner except window-type air conditioner in U.S.A and Canada.
•If you don't install the air conditioner properly, it may cause a fire, a water leakage or an electric
shock.
•You must install the air conditioner according to the national wiring regulations and safety regulations.
•Install the indoor unit higher than 2.5m from the floor to avoid the injury caused by the operation of
the fan.(except the window-type air conditioner)
•The manufacturer is not responsible for any accidents or injury caused by an incorrect installation.
•When installing the built-in type air conditioner, keep all electric cables such as the power cable and
the connection cord in
•pipes, ducts, or cable channels to protect them from the danger of impact or any other incidents.
1-2 Power supply and circuit breaker
•If the power cord of the air conditioner is damaged, it must be replaced by the manufacturer or a
qualified person in order to avoid a hazard.
•The air conditioner must be plugged into an independent circuit if applicable or connect the power
cable to the auxiliary circuit breaker. An all pole disconnection form the power supply must be
incorporated in the fixed wiring with a contact opening of>3mm.
•Do not extend an electric cord to the air conditioner.
•The air conditioner must be plugged in after you complete the installation.
1-3 During operation
•Do not repair the air conditioner at your discretion. It is recommended to contact a service center
directly.
•Never spill any kind of liquid on the air conditioner. If this happens, turn off the air conditioner and
contact an authorized service center.
•Do not insert anything between the airflow blades to prevent damage of the inner fan and consequent
injury. Keep children away from the air conditioner.
•Do not place any obstacles in front of the air conditioner.
•Do not spray any kind of liquid into the indoor unit. If this happens, turn off the air conditioner and
contact a service center.
•Make sure that the air conditioner is well ventilated at all times. Do not place a cloth or other materials
over it.
•Remove the batteries if you don't use the remote control for a long time. (If applicable)
•Use the remote control within 7 meters from the indoor unit. (If applicable)

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1-4 Disposing of the unit
•Before the throwing out the air conditioner, remove the batteries from the remote control.
•When you dispose of the air conditioner, consult your dealer. If pipes are removed incorrectly,
refrigerant may blow out and cause air pollution. When it contacts with your skin, it can cause skin
injury.
•The package of the air conditioner should be recycled or disposed of properly for environmental
reasons.
1-5 Others
•Never store or load the air conditioner upside down or sideways to prevent the damage to the
compressor.
•Young children or infirm persons should be always supervised when they use the air conditioner.
•Max current is measured according to IEC standard for safety.
•Current is measured according to ISO standard for energy efficiency.

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2. Product Specifications
2-1 The Feature of Product
•Fast cooling
If you want the strong and cool air, just select Fast function! It will get you the strongest air!
•Wind-Free Cooling
Use the Wind-Free Cooling function to enjoy a mild breeze coming through fine holes in the Wind-Free
panel instead of air coming directly through the air flow blades.
•Motion detection
Use the motion detection function to make the air conditioner detect people and blow air directly or
indirectly. With no detection, energysaving mode is operated..
•Eco
Use the Single User function when you’re along at home. Aside from energy savings from the inverter
technology, the Single User Mode will further minimize your energy consumption and reduce your
electricity bill by adjusting the maximum operating capacity of the compressor.
•Easy Filter
There is no grille to remove before separating the filter from the air conditioner! Therefore, filter can
be cleaned easily and more frequently. Constant filter cleaning will prevent dust from entering the
product or accumulating on the filter.
•good'sleep function
good’sleep function will allow you to have deep, good night’sleep by adjusting the temperature, fan
speed and air flow direction.
•Smart Install
When the installation is done, your product will examine itself through trial operation to check if it
was installed properly.
•Easy Installation
It’s so easy to install! You can easily hang the product on the wall and connect the pipes and wires by
opening the cover on the bottom of the product. Now you won’t have to tilt the product to connect the
pipe and the wires!

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2-2 Product Specifications
Model Model : AR09TXFCAWK/EU Model : AR12TXFCAWK/EU Model : AR24TXEAAWK/EU
Rating Mode Unit Wall-mounted Wall-mounted Wall-mounted
Capacity
T1 Cool W 2500 3500 6500
T3 Cool W - - -
Heat W 3200 3500 7400
Power Input
T1 Cool W 700 1220 1950
T3 Cool W - - -
Heat W 840 940 2350
Current
T1 Cool A 3.6 5.6 8.8
T3 Cool A - - -
Heat A 4 4.5 10.5
Efciency
EER W/W 3.57 2.87 3.33
- - -
COP W/W 3.81 3.72 3.15
Platform
IDU - QF1, Wind-Free : 9700 QF1, Wind-Free : 9700 QF3, Wind-Free : 9700
ODU - N-V2MD N-V2MD Q-480
Evap
Main - 7, 2R*9(10)S*591mm, H1.3, N.G.S,
1by2
7, 2R*9(10)S*591mm, H1.3, N.G.S,
1by2
7, ( 2R*10S+1R*4S )*825.5mm,
(H1.3+H1.3), N.G.S, 4by4
Sub - 7, 2R*5(6)S*591mm, H1.3, N.G.S : (Q-1-
5)
7, 2R*5(6)S*591mm, H1.3, N.G.S : (Q-
1-5)
7, ( 2R*6S+1R*4S )*825.5mm,
(H1.3+H1.3), N.G.S : (Q-3-7)
Cond
Main - 7W, 2R*20(21)S*639/611mm,
Corrugate1.5, N.G.S, 4by4by2
7W, 2R*20(21)S*639/611mm,
Corrugate1.5, N.G.S, 4by4by2
7W, 2R*28S*906.8mm, Corrugate1.5,
N.G.S, 4by4by1
Sub - - - -
Comp Model - UB1AR5090FE6 UB1AR5090FE6 UB9TK2150FE4
Motor In
Code - DB31-00694A DB31-00694A DB31-00637A
Name - FMH2031SSA FMH2031SSA RD-310-25-8B / SIC-37CVL-F127-2
Motor Out
Code - DB31-00693A DB31-00693A DB31-00658D
Name - ZKFP-30-8-222 ZKFP-30-8-222 FMDC531SSE / YMAP095AE01A1
Expansion Φ * L - EEV, 1.3 [029] EEV, 1.3 [029] EEV, 1.4
Refrigerant
type - R32 R32 R32
charge g 700 g 700 g 1300 g
SVC Valve Liquid /
Gas -6.35 / 9.52 6.35 / 9.52 6.35 / 15.88
Tube Dis. / Suc. - 7.94 / 9.52 7.94 / 9.52 9.52 / 12.7
Power Cord - - - -
4-WAY V/V - 1 hp 1 hp 2 hp
Power Supply V/Hz/Φ 220-240/50/1 220-240/50/1 Power Source : 220-240/50/1
Climate Class - T1 T1 Climates Class : T1
NOISE
IDU UT,T dB 44/59 dB 54 / 65 dB 51 / 62 dB
ODU dB 54 / 65 dB 820*299*215 60 / 68 dB
Net Size
(W*D*H)
IDU
mm
820*299*215 660*475*242 1065*311*301
ODU 660*475*242 kg 880*310*648
Weight
IDU
kg
8.9 23 13
ODU 23 IDU 40.8
Operation
range
Cooling
IDU 16 ˚C~32 ˚C 16 ˚C~32 ˚C 16 ˚C~32 ˚C
ODU -10 °C to 46 °C -10 °C to 46 °C -10 °C to 46 °C
Heating
IDU 27 °C or less 27 °C or less 27 °C or less
ODU -15 °C to 24 °C -15 °C to 24 °C -15 °C to 24 °C

8SAMSUNG ELECTRONICS
2-3 The Comparative Specifications Product
Model DEVELOPMENT MODEL DEVELOPMENT MODEL DEVELOPMENT MODEL
Model : AR09TXFCAWK/EU Model : AR12TXFCAWK/EU Model : AR24TXEAAWK/EU
Design
Indoor Unit
Outdoor Unit
Net Weight Indoor Unit 8.9 8.9 13
Outdoor Unit 23 23 40.8
Net Dimension Indoor Unit 820*299*215 820*299*215 1065*311*301
Outdoor Unit 660*475*242 660*475*242 880*310*648
Noise Indoor Unit 44/59 dB 44/59 dB 51 / 62 dB↓
Outdoor Unit 54 / 65 dB 54 / 65 dB 60 / 68 dB↓
Air Purifying System Forced Smart Install Forced Smart Install Forced Smart Install
Indoor Display 8.8(AI/Timer/Wi) 8.8(AI/Timer/Wi) 8.8(AI/Timer/Wi)

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2-4 Accessory and Option Specifications
Item Descriptions Code No. Q’ty Remark
ASSY HANGER DB90-11453A 1
Indoor unit case
ASSY WIRELESS REMOCON DB96-24901C 1
MANUAL USER DB68-08595A 1
MANUAL USER DB68-08615A 1
MANUAL INSTALL DB68-08692A 1
HOLDER REMOCON DB61-06087A 1
Batteries for Remote controller 4301-000121 2
M4 x 12 Tapped Screws 6002-000213 2
Rubber Leg DB67-01533A 4
Outdoor unit case
Drain plug DB67-20011A 1

10 SAMSUNG ELECTRONICS
3. Alignment and Adjustments
3-1 Test Mode
•How to Approach Test Mode
You can approach the test mode by pressing the on/off switch of indoor unit for 5 seconds.
•Test mode operation option
After installing the air conditioner, check whether each subordinate is normally operated or not by operating the
test mode.
● When an Error occurs, display the Error Mode.
● Operation Mode : Cool mode. operate the cool mode by operating the compressor by force without the compressor
ON/OFF according to the set temperature/indoor temperature. (Do not follow the antifreeze control)
● Up-down louver : Up-down swing mode
● Indoor Fan : Turbo
Note
• Because the teat mode operate the cool mode by force not related to the set temperature / indoor
temperature, check whether each subordinate is operated normally or not after completing
installation and must turn off the power of the air conditioner.

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3-2 Display Error and Check Method
3-2-1 IndoorDisplay Error and Check Method
ERROR MODE TYPE
DESCRIPTION
7-SEG INDOOR/
OUTDOOR
C101, C102
INDOOR
Communication error
C108 Set address error
C121 Room TH sensor error
C122, C123 INDOOR MID, INDOOR IN EVA-TH sensor error
C140 Dust sensor error
C142 Humidity error
C143 Motion sensor error
C154 Fan error(indoor)
C161 Mixed operation error
C163 Option error
C187 K1 lter feed back error
C665 DRAIN PUMP ERROR
✴✴Note✴✴
If the Set doesn’t work (No power), check the Thermal fuse of Terminal block OPEN or SHORT with Multimeter.
✴
Measure the Thermal fuse housing PIN#1
~
2 : OPEN(disconnection) -> defective productIf

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3-2-2 Outdoor Display Error and Check Method
ERROR MODE DESCRIPTION
7-SEG YEL GRN RED
-Power off / VDD NG
-Power on reset (1sec)
-Normal operation
-Abnormal communication
(Indoor <-> Outdoor)
-
C464 IPM over current (O.C) error
C461 Comp. strating error
C470 EEPROM data error (no data)
C466 DC-Link voltage under/over error
C484 PFC over load error
C483 Over voltage protection error
C221 OUT-TH (Outdoor temperature) sensor error
C416 DIS-TH(Discharge temperature) Over error
C251 DIS-TH(Discharge temperature) Sensor error
C468 Current sensor error
C474 Heatsink sensor error
C485 Input current sensor error
C465 Comp. V_limit/ I_limit error
C500 Heatsinkover temperature error
C231 CON-TH (Cond temperature) sensor error
C203 Time out Comp. (Inv Micom <->Main Micom)
C458 Fan error
C471 EEPROM data error (Main Micom <-> INV Micom)
C467 Comp. wire missing error
C440 Prohibit operation condition error (Heating)
C441 Prohibit operation condition error (Cooling)
C469 DC-Link voltage sensor
C488 AC Input voltage sensor
C462 AC Input I_limit trip error
C554 Gas leak error
C574 Gas shortage error
C422 EEV or valve close error-self diagnosis
-Test operation at Cooling mode
-Test operation at Heating mode
: LAMP ON : LAMP OFF : LAMP BLINK

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3-3 Setting Option Setup Method
ex) Option No. :
Note :
SEG1, SEG7, SEG13, SEG19 need not to be pressed in, so in fact the Option No. we should press in is as below.
SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24
SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 SEG41 SEG42 SEG43 SEG44 SEG45 SEG46 SEG47 SEG48
Enter the Option Setup mode.
1. Tack out the batteries of remote control.
2. Press the temperature button simultaneously and insert the battery again.
3. Make sure the remote control display shown as
Step 1
Enter the Options Setup mode and select your options asscording to the following procedure.
Step 2

14 SAMSUNG ELECTRONICS
Press the Mode Selection key to set the displaypart andcheck thedisplaypart.
→Thedisplaypart shows likebelowwheneachtime youpressModebutton.
Step 3 Upon completion of the selection, check you made right selections.
When pressing the operation ON/OFF key with the direction of remote control for the sound’’Ding’’or
’’Diriring’’isheard and the OPERATION ICON( ) lampof the display is ickering at the same time,
then the input of option is completed. (If the deriving sound isn't heard, try again pressing the ON/
OFF button.)
Step 4 PressingtheON/OFFbutton( ) .

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Enter the Options Setup mode and select your options asscording to the following procedure.
Step 5
Step 1 (Enter the Option Setup mode) is executed.
(Seg25 ~ 48 for setting remote control Setup)
Push the Mode button to set the display panerl to 2.
Every time you push the button, the display panel reads
. . . repeatedly.
Push the Mode button to set the display panerl to 1.
Every time you push the button, the display panel reads
. . . repeatedly.

16 SAMSUNG ELECTRONICS
Press the Mode Selection key to set the displaypart andcheck thedisplaypart.
→Thedisplaypart shows likebelowwheneachtime youpressModebutton.
Step 6 Upon completion of the selection, check you made right selections.
When pressing the operation ON/OFF key with the direction of remote control for the sound’’Ding’’or
’’Diriring’’isheard and the OPERATION ICON( ) lampof the display is ickering at the same time,
then the input of option is completed. (If the deriving sound isn't heard, try again pressing the ON/
OFF button.)
Step 7 PressingtheON/OFFbutton( ) .
First : Remove the battery from the remote control.
Second : Re-insert the battery into the remote control.
Third : Press ON/OFF key with the direction of remote control for set.
■Error mode
1. If all lamps of indoor unit are ickering, Plug out, plug in power plug again and press ON/OFF
key to retry.
2. If the unit is not working properly or all lamps are continuously ickering setting the option
code, see if the correct option code is set up for this model
Step 8 Unit operation test-run.
■ Option Items
Model name set Option code
Gerneral Install
AR09TXFCAWK/EU 011A05-17C0EA-271920-371804 020000-100000-200101-300335
AR12TXFCAWK/EU 011A05-17C0FA-272323-371804 020000-100000-200101-300335
AR24TXEAAWK/EU 011A05-16C25B-27414A-371404 020000-100000-200101-300357

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4. Disassembly and Reassembly
■ Necessary Tools
Item Remark
+SCREW DRIVER
Q’ty 1 ea.
To assembly and disassembly the screw
MONKEY SPANNER
Q’ty 1 ea.
To assembly and disassembly the Fan motor and
Compressor
- SCREW DRIVER
Q’ty 1 ea.
To assembly and disassembly the screw

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4-1. Indoor Unit
No. Parts Procedure Remark
1 PANEL-FRONT 1) Stop the driving of air conditioner and
shut off main power supply.
2) Detach FILTER PRE from the PANEL
FRONT.
3) The COVER PANEL is xed to body by
hooks in center and side area.
4) Separate the hook pulling end of the
COVER PANEL as shown in gures.(Watch
out for the damage of hooks)

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No. Parts Procedure Remark
PANEL-FRONT Caution:
Assembly of Cover Panel after service
end.
- Piping and Drain Hose must be careful
not to damage and progress must be
done with both hands.
- Need to check all bottom hooks in
holes of the main frame before you push
to assemble.
Caution:
- Assemble(push) side hooks
- Assemble(push) center 5 hooks each.