4-1 Display Error and Check Method. Samsung AJ007JNADCH/AA, AJ009JNADCH/AA, AJ020JCJ2CH/AA, AJ036JCJ5CH/AA
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4-5 Fault Diagnosis by Symptom
4-5-1 Indoor
4-5-1-1 Indoor temperature sensor (open/short)
*OEPPSVOJUEJTQMBZ
8JSFSFNPUFDPOUSPMMFSEJTQMBZ
4ZNQUPN
'BJMVSF
9 0QFSBUJPO 9 %FGSPTU
&
5JNFS9 'BO9 'JMUFS
&SSPSPG3PPNTFOTPSJOUIFJOEPPSVOJU 0QFO4IPSU
4IPSUPSMFBLBHFPGUIF3PPNTFOTPS
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TFOTPSEJTDPOOFDUFEGSPNUIF
DPOOFDUPSJO1$#
/P
3FNPWFUIFJOEPPSUFNQFSBUVSFTFOTPS
DPOOFDUPSGSPNUIF1$#BOENFBTVSFUIF
SFTJTUBODFCFUXFFOUXPUFSNJOBMT
:FT
3FTUBSUUIFTZTUFNBGUFSDPOOFDUJOH
UPUIF1$#DPOOFDUPS
5FNQFSBUVSFTFOTPS
SFTJTUBODFWBMVF
$VSSFOU
UFNQFSBUVSF
¡$
3FTJTUBODF
LƮ
*OUIJTDBTFJTUIFSFTJTUBODF
WBMVFPVUPGSBOHFJOUIFUFNQFSBUVSF
UBCMFPOUIFSJHIU
/P
3FTUBSUUIFTZTUFNBGUFSSFQMBDJOHUIF1$#
:FT
*OEPPSUFNQFSBUVSFTFOTPS
GBJMVSF SFQMBDF
4-24 Samsung Electronics
4-5-1-2 Indoor FAN Error ( BLDC MOTOR MODEL )
*OEPPSVOJUEJTQMBZ
8JSFSFNPUFDPOUSPMMFSEJTQMBZ
4ZNQUPN
'BJMVSF
9 0QFSBUJPO 9 %FGSPTU
&
9 5JNFS
&SSPSPG'BONPUPSJOUIFJOEPPSVOJU
'BOTFOTPS
'BO9 'JMUFS
*TUIFNPUPSDPOOFDUPS
EJTDPOOFDUFEGSPNUIF1$#
:FT
$POOFDUUIFDPOOFDUPSUP
1$#BOESFTUBSUUIFVOJU
/P
*TUIFSFGPSFJHOTVCTUBODF
TUVDLJOUIFNPUPSGBO
:FT
3FQMBDFUIF1$#BOESFTUBSUUIFVOJU
:FT
3FNPWFUIFGPSFJHOTVCTUBODF
BOESFTUBSUUIFVOJU
Samsung Electronics 4-25
4-5-1-3 Communication error after finishing Tracking
*OEPPSVOJUEJTQMBZ
4ZNQUPN
'BJMVSF
9 0QFSBUJPO 9 %FGSPTU 5JNFS 'BO9 'JMUFS
$PNNVOJDBUJPOFSSPSCFUXFFOUIFJOEPPSBOEPVUEPPSVOJUGPSUXPNJOVUFT
$PNNVOJDBUJPOFSSPSCFUXFFOUIFJOEPPSVOJUBOEPVUEPPSVOJU
/P $IFDLUIFDPNNVOJDBUJPODBCMFBOE
SFQMBDFUIFJOEPPSVOJU1$#
*TUIFSFBSFTQPOTFGSPNUIFJOEPPS1$#
-&% 3&%JTOPU0/
:FT
3FNPWFUIFDPNNVOJDBUJPODBCMF
DPOOFDUJOHUIFPVUEPPSVOJUUPJOEPPSVOJU
BOENFBTVSFUIFTJHOBMPO-*/&PGUIF
PVUEPPSVOJUXJUIBTDPQF
4-26
*OUIJTDBTFJTUIF
WPMUBHFXBWFGPSNCFUXFFOUIFMJOFTTRVBSF
XBWFXJUIBNQMJUVEFPWFS7BTTIPXO
JOUIFGPMMPXJOHQJDUVSF
:FT
3FDPOOFDUUIFDBCMFDPOOFDUJOH
UIFPVUEPPSVOJUUPUIFJOEPPSVOJU
BOESFTUBSUUIFVOJU
*GUIFDPNNVOJDBUJPOTUJMMEPFTOUXPSL
SFQMBDFUIFJOEPPSVOJU1$#
$"4&/PFNBMDPOEJUJPO
7
7
7
$"4&"COPFNBMDPOEJUJPO
7
7
/P
$IFDLUIFDPNNVOJDBUJPO
DBCMFJOUIFPVUEPPSVOJU1$#
BOESFQMBDFUIF1$#
065%003594*(/"-
*/%003594*(/"-
065%003594*(/"-
0/-:
Samsung Electronics
4-5-1-4 EEPROM circuit failure
*OEPPSVOJUEJTQMBZ
4ZNQUPN
'BJMVSF
0QFSBUJPO %FGSPTU 5JNFS9 'JMUFS
&&130.DJSDVJUGBJMVSF
&&130.DPNQPOFOUGBJMVSF&&130.DJSDVJUQBSUTNJTTJOHEBNBHFETPMEFSJOHGBJMVSF
"SFUIF&&130.DJSDVJU
DPNQPOFOUTJOHPPEDPOEJUJPOT
NJTTJOHDPNQPOFOUTEBNBHF
TPMEFSJOHGBJMVSF
/P
3FTUBSUUIFVOJUBGUFSSFQMBDJOHUIF1$#
:FT
3FQMBDFUIF1$#JGUIFSFTUBSUGBJMT
Samsung Electronics 4-27
4-28
4-5-2 Outdoor unit is not powered on – Initial diagnosis(1phase)
1. Check items
1) Is the power supply voltage 220V?
2) Is the AC power connected correctly?
3) Are the LEDs in the main PCB and inverter PCB of the outdoor unit ON?
4) Is the input power voltage of the indoor unit 220V?
5) Is the wired remote controller connected correctly?
2. Check procedure
Turn off the main power switch
DJSDVJUCSFBLPGQPXFSPVUMFUBOEUVSOPO
BHBJOBGUFSTFDPOET
*TUIFPVUEPPSVOJUQPXFS
TVQQMZ -/7
:FT
*TUIFPVUEPPSVOJUQPXFS
WPMUBHF -/7
:FT
*TUIFWPMUBHFCFUXFFO
UIFUFSNJOBM _BOE _PGUIF
CSJEHFEJPEF7
:FT
*TUIFGVTFDPOOFDUFE
:FT
*TUIFSFTJTUBODFWBMVFPG3Ʈ
:FT
*TUIFSFBDUPSDPOOFDUPS
DPOOFDUFEDPSSFDUMZ
:FT
3FQMBDFUIF1#"
/P
/P
/P
/P
/P
/P
$IFDLUIFJOQVUQPXFS
$IFDLUIFDPOOFDUJPOPGUIFUFSNJOBMCMPDL
3FQMBDFUIFJOWFSUFS1#"
3FQMBDFUIFGVTF
3FQMBDFUIFJOWFSUFS1#"
$POOFDUUIFSFBDUPS
Samsung Electronics
4-5-3 Outdoor unit fan error
1. Check items
1) Are the input voltage and power connection correct?
2) Is the motor connecting wire connected to the outdoor unit PCB correctly?
3) Are the indoor/outdoor fuses connected?
4) Are there any obstacles near the motor or propeller?
5) Is the motor driver out of order?
6) AJ020/024 Model check CN901 , AJ036 Model Check CN 90
2. Check procedure
5VSOPõUIFQPXFSBOESFTUBSUUIFVOJU
/P
*TUIFGBO $/DPOOFDUFEDPSSFDUMZ
:FT
*TUIFSFTJTUBODFCFUXFFO
QJOBOEQJOPGUIFGBO $/
PWFS.Ʈ
:FT
*TUIFWPMUBHFCFUXFFO
QJOBOEQJOPGUIFGBO $/
PWFS7
:FT
*TUIFWPMUBHFCFUXFFO
QJOBOEQJOPGUIFGBO $/
PWFS7
:FT
*TUIFWPMUBHFCFUXFFO
QJOBOEQJOPGUIFGBO $/
EVSJOHUIFPQFSBUJPO7_7
:FT
*TUIFGBOSVOOJOHUIFPQFSBUJPONPEF
:FT
%PFTUIFWPMUBHFCFUXFFO
QJOBOEQJOPGUIFGBO $/ nVDUVBUF )JHI7_7-PX7_7
/P
*TUIFWPMUBHFCFUXFFO
QJOBOEQJOPGUIFGBO $/
7_7
:FT
3FQMBDFUIFJOWFSUFS1$#
Samsung Electronics
/P
/P
/P
/P
/P
:FT
/P
$IFDL$/
3FQMBDFUIFGBONPUPS
$IFDLUIFPVUEPPSVOJUQPXFSTVQQMZFSSPS
3FQMBDFUIFJOWFSUFS1$#
3FQMBDFUIFJOWFSUFS1$#
3FQMBDFUIFGBONPUPS
3FQMBDFJOWFSUFS1$#
3FQMBDFUIFGBONPUPS
4-29
4-5-4 Compressor startup error, Compressor Lock error, Compressor rotation error.
1. Check items
1) Are the power supply and compressor connecting wires connected correctly?
2) Is the inter-phase resistance of the compressor normal?
2. Check procedure
5VSOPõUIFQPXFSBOESFTUBSUUIFVOJU
*TUIFSFBOFSSPS
:FT
*TUIFSFTJTUBODFWBMWF
CFUFXXOUIFQIBTFT 677886
CFMPXOPSNBMWBMWF
/P
:FT
*TUIFSFTJTUBODFWBMVF
CFUXFFOUIFDPNQSFTTPSCPEZBOEUIFDIBTTJT
JOUIFSBOHFPG.FHBƮ
:FT
*TUIFDPNQSFTTPSDPOOFDUJPO
XJSFDPOOFDUFEUPUIFDPNQSFTTPS
DPSSFDUMZ
:FT
3FQMBDFUIFPVSEPPSVOJUNBJO1$#
/P
/P
4FSWJDFFOE
/P
3FQMBDFUIFDPNQSFTTPS
Checking Comp Resistance ( Normal value )
AJ020JCJ2CH
AJ024JCJ3CH
AJ036JCJ5CH
U-V
0.5~1.1Ω
0.2~0.6Ω
0.1~0.5Ω
V-W W-U
0.5~1.1Ω 0.5~1.1Ω
0.2~0.6Ω 0.2~0.6Ω
0.1~0.5Ω 0.1~0.5Ω
3FQMBDFUIFDPNQSFTTPS
$IFDLUIFDPOOFDUJPOXJSF
4-30 Samsung Electronics
4-5-5 IPM Over Current error
1. Check items
1) Is the coolant changed?
2) Is the compressor running normally?
3) Is the compressor connected correctly?
4) Are there any obstacles near the indoor and outdoor units?
2. Check procedure
/P
*TUIFPVSEPPSVOJUJOTUBMMFEDPSSFDUMZ
:FT
3FNPWFUIFPCTUBDMFTBOEJOTUBMMUIFVOJUBHBJO
/P
*TUIFJOEPPSVOJUJOTUBMMFEDPSSFDUMZ 3FNPWFUIFPCTUBDMFTBOEJOTUBMMUIFVOJUBHBJO
:FT
*TUIFTFSWJDFWBMWFDPNQMFUFMZPQFO
:FT
*TUIFDPNQSFTTPSDPOOFDUJPO
XJSFDPOOFDUFEUPUIFDPNQSFTTPSDPSSFDUMZ
:FT
*TUIFSFTJTUBODFWBMWF
CFUFXXOUIFQIBTFT 677886
CFMPXOPSNBMWBMWF
/P
/P
/P
0QFOUIFWBMWF
$IFDLUIFDPNQSFTTPSDPOOFDUJPOTUBUVT
3FQMBDFUIFDPNQSFTTPS
Checking Comp Resistance ( Normal value )
AJ020JCJ2CH
AJ024JCJ3CH
AJ036JCJ5CH
U-V
0.5~1.1Ω
0.2~0.6Ω
0.1~0.5Ω
V-W W-U
0.5~1.1Ω 0.5~1.1Ω
0.2~0.6Ω 0.2~0.6Ω
0.1~0.5Ω 0.1~0.5Ω
:FT
*TUIFSFTJTUBODFWBMVF
CFUXFFOUIFDPNQSFTTPSCPEBZBOEUIFDIBTTJT
JOUIFSBOHFPG.FHBƮ
:FT
"SFUIFUFNQFSBUVSFTFOTPSMPDBUJPOBOEUIF
NFBTVSSFEWBMVFOPNBM
:FT
*TUIFDBCMFCFUXFFOUIFDPNQSFTTPSBOEUIF
1$#DPOOFDUFEDPSSFDUMZ
:FT
3FQMBDFUIF1$#
Samsung Electronics
/P
/P
/P
3FQMBDFUIFDPNQSFTTPS
Turn off the power and reconnect the table.
Turn off the power and correct or replace the temperature sensor location
4-31
4-5-6 Checking Temperature sensor
In case of a sensor in outdoor unit, temperature can be monitored with "VIEW MODE".
Press K4 key on the outdoor display PCB for several time to change the display to sensor temperature value.
Left 1 digit of the LED is data index and Right 2 digits are the value.
Index
8
9
A
B
Value
Discharge sensor temperature
OLPsensor temperature
Condenser sensor temperature
Outdoor sensor temperature
Remark
The unit is degree C
4-5-6-1 Outdoor Discharge/OLP temperature sensor error
1. Check Items:
1) Is the sensor connected correctly?
2) Is the sensor placed correctly?
3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature?
4) Is the resistance value of sensor connection pull-up correct?
2. Troubleshooting procedure
/P
*TUIFTFOTPSDPOOFDUPSDPOOFDUFE
DPSSFDUMZJOBDDPSEBODFXJUIBDPMPS
:FT
*TUIFTFOTPSSFTJTUBODFWBMVF
LPINBUUIFSPPNUFNQFSBUVSF
PGȟ
:FT
$POOFDUUIFTFOTPSUP1#"DPOOFDUPS
TVQQMZQPXFSBOENFBTVSFUIF
WPMUBHFPGTFOTPSJOUIFDPOOFDUPS
/P
3FDPOOFDUUIFTFOTPSDPOOFDUPS
4FOTPS3FQMBDF
4FOTPSSFTJTUBODFWBMVFȟLPIN
ȟPIN
ȟPIN
ȟLPIN
:FT
#FMPX7PS0WFS7
/P
.JDPNFSSPSPSDPOOFDUPSDIFDL
:FT
&YDIBOHFUIF0VUEPPS1#"
&YDIBOHFUIF0VUEPPS1#"
4-32 Samsung Electronics
4-5- 6-2 Outdoor out / cond temperature sensor error
1) Is the sensor connected correctly?
2) Is the sensor placed correctly?
3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature?
4) Is the resistance value of sensor connection pull-up correct?
Is the sensor connector connected correctly in accordance with a color?
Yes
Is the sensor resistance value
200kohm±3% at the room temperature of 25ºс
Yes
Connect the sensor to PBA connector supply power and measure the voltage of sensor in the connector
No
Reconnect the sensor connector.
Sensor resistance value : 20ºс - 12.09kohm
30ºс - 8.31kohm
35ºс - 6.94kohm
40ºс - 5.83kohm
Below 0.5V or Over 4.5V?
No
Micom error or connector check
Yes
Exchange the Outdoor PBA
Yes
Exchange the Outdoor PBA
4-5-7 Checking EEV
Current EEV step value can monitored with "VIEW MODE"
Press K4 key on the outdoor display PCB for several time to change the display to current EEV value.
Left 1 digit of the LED is data index and Right 3 digits is the value.
Index
3 EEV-A step
Value
AJ020JCJ2CH
4 EEV-B step
AJ024JCJ3CH
Remark
The step value range is between Zero and 480.
5 EEV-C step
Samsung Electronics 4-33
4-6 PCB Inspection
4-6-1 Cautions for Part Replacement
1. The human body carries much static electricity.
Before touching a part for repair, replacement or the similar purpose, be sure to touch a grounded metallic portion by hand to let the static electricity go through the metallic portion to the earth.
Especially when handling any micro computer or IC, carefully remove such static electricity before touching them.
2. When repairing any part on a work bench, be sure to place an insulative sheet on the bench and always keep the sheet surface neat without any metal fragments. If any such fragment touches a part, a secondary trouble will possibly be caused in the part.
3. Before replacing any parts, be sure to turn off the power supply. If such replacement is done with the power supply kept on, an electric shock, short circuit or destruction of a part may result.
4. During replacement or repair of a part, carefully handle it : The printed circuit board has fine lead wires
(jumper wires) and glass-made parts (diode) on its substrate.
So if a circuit board is roughly handled, such lead wires and parts will be easily broken or damaged by bending or shock.
5. When soldering the lead wires of any new part, be sure to polish them using an emery paper or the like before soldering them.
Since the lead wires of any new part are covered with an oxide film, solder cannot adhere to the lead wires if not polished.
4-6-2 Procedure
12-4-2
The parts should be replaced in the following procedure.
Check for any faulty part.
6. When soldering any part, care should be exercised not to apply any high-wattage soldering iron to the part for a long time. Some parts are of so low a heat resistance that they may be broken or have the properties changed if a soldering iron is so applied
(Otherwise, the pattern may possibly be separated and raised).
7. The heat of the soldering iron should be transferred to the entire object to be soldered. If the solder pieces are not well fused due to insufficient transfer of the heat from the soldering iron, no satisfactory electrical continuity can be assured even if the soldered objects appear well connected to each other.
8. The solder used should be limited to a minimum.
If excessive solder is used, it will cause inter-pattern contact, which may cause malfunction of the circuit.
9. Although some part of the PCB surface are coated with coating material for protection from dust and dirt, soldering is also available to the coating part.
Because this coating is thin and is weak for soldering heat.
But coating material remaining on the solder part should be cleaned up before soldering a new component to prevent the solder part from becoming bad conduction.
10. After replacing a faulty PCB by a new one, the same
address setting must be applied to the new PCB.
(refer to the page 4-19 ~ page 4-24)
11. When connected to an outdoor unit manufactured after
June, 2011, a new option code is not needed.
Detach the faulty part.
Replace it with a new part.
Set an address.
Check the operation of the new part.
The repair is completed.
4-34 Samsung Electronics
5. PCB Diagram and Parts list
5-1. Indoor Unit
Q AJ009JNLDCH/AJ012JNLDCH/AJ018JNLDCH
19 18 15 20 17 16 21
1 2
14
3 4 9 5
22
6
23
7
24
8
25 11
10
12 13
1
2
3
4
5
6
7
8
9
10
11
12
Samsung Electronics
Floating S/W : SMW250-02(BLK)
Indoor Pipe In Temperature Sensor : SMW250-04(WHT)
Indoor Room Temperature Sensor : SMW250-04(WHT)
Indoor Pipe Out : SMW250-02(WHT)
Temperature Sensor : SMW250-02(WHT)
Heater Discharge : SMW250-02(YEL)
Temperature Sensor : SMW250-02(YEL)
Wired Remote Controller Power : YW396-02(WHT)
External Control(S/W Part) : SMW250-02(RED)
EEV : SMW250-05(BLU) : SMW250-05(BLU)
Display : SMW200-11(WHT) : SMW200-11(WHT)
External Control(Display Part) : SMW250-04(RED)
HALL IC : SMW250-03(BLU)
MICOM Download : SMW200-10(WHT)
Indoor/Outdoor Communication : YW396-02(RED)
21
22
19
20
16
17
18
13
14
15
23
24
25
Wired Remote Controller Communication : YW396-02(BLU)
Option Load Connector : SMW250-05(YEL)
Heater : YW39607AV(WHT)
Indoor Address S/W
Indoor Option S/W
Indoor Fan(TAP) : YW396-09AV(WHT)
Ventilator : YW396-03AV(BLK)
Drain Pump : YW396-03AV(YEL)
Hot Coil : YW396-03AV(RED)
Indoor Fan(SSR) : YW396-03AV(RED)
Power : YW396-03AV(WHT)
Transformer Out : YW396-03AV(WHT)
Main Power In : YW396-03AV(BLU)
Power : YW396-03AV(BLU)
Transformer In : SMW250-03(RED)
5-1
Q AJ012JNNDCH/AJ018JNNDCH
1
2
3
4 5
6
7
8
9
10
11
12
13
13 14
15
16
5-2
(1) Main power input
1(L):Phase L
2(N):Phase N
(5) Eva in/out sensor
1:EVA IN temperture sensor
2,4,6:GND
3:EVA OUT temperture sensor
5:EVA discharge
(2) BLDC fan
1:DC310V
2:Not used
3:AGND
4:DC15V
5:FAN PRM
6:PRM FEEDBACK
(6) Room temperature
1:Room remperature sensor
2:GND
(3) Earth wire
1:GND
(7) S/W download
S/W download
(9) VENT
1:DC12V
2:VENT_OUT
(13) Human Sensor
1:DC12V
2:Com4_TXD
3:Com4_RXD
4:Human sensor reset
5:GND
(10) Panel flaps
1:DC12V
2-5: Louver control signal
6:DV12V
7-10:Louver control signal
(14) External
1,3:DC12V
2:Error_CHK_OUT
3:Comp_CHK_OUT
(11) SPI
1,2:GND
3:SPI CONTROL
4:Not Used
(15) External
1:EXT_CTRL
2:GND
(4) Float switch
1:Float_SW
2:GND
(8) Panel display
1:DC12V
2-5:LED control signal
6:REMOCON signal out
7,8:Not used
9:REMOCON_INT
10:GND
11:Vcc
(12) Drain Pump
1:DC12V
2:DRAOM_PUMP_OUT
(16) COM1,COM2,V1,V2
F3-F4: Com2
V1-V2:DC12V
F1-F2:Com1
Samsung Electronics
Q Panel PCB
1
Samsung Electronics
① CN01-DISPLAY
#1 : DC 12V
#2~5 : LED control signal
#6 : Remocon signal out
#7~8 : Not used
#9 : Remocon signal IN
#10: GND
#11: DC 5V
5-3
Q AJ007JNADCH/AJ009JNADCH/AJ012JNADCH/AJ018JNADCH/AJ024JNADCH
$/ $/ $/ $/ $/
$/
$/
$/
$/
$/
$/
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5-4
① $/$/$/
45&1.0503
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⑥ $/5&.1&3"563&4&/403
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⑦ $/$0..6/*$"5*0/
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Samsung Electronics
■ AJ***NBNDCH/AA
-MAIN PCB
1 2 3 4 5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
① TB101-AC POWER
#1: AC POWER (L)
#2: AC POWER (N)
⑤ CN809-AUTO GRILLE
#1 : DC12V
#4 : REMOCON OUT
#5 : GND
② CN101-EARTH
#1: EARTH
⑥ CN412-ROOM SENSOR
#1 : ROOM SENSOR
#2 : GND
③ CN701-BLDC MOTOR
#1: DC310V
#3 : GND
#4 : DC15V
#5 : FAN RPM
#6 : RPM FEEDBACK
⑦ CN501-DISPLAY
#1: DC12V
#2: LED_0
#3: LED_1
#4: LED_2
#5: LED_3
#6: LED_4
#7: LED_5
#8: REMOCON OUT
#9 : AUTO SWITCH
#10: REMOCON IN
#11: GND
#12: DC5V
#13: GND
④ CN140-FUSE CHECK
#1: FUSE CHECK Signal
#2: GND
⑧ CN81-COMP/ERROR MONITOR
#1: DC12V
#2: ERROR OUT (GND)
#3: DC12V
#4: COMP/OPER. OUT (GND)
Samsung Electronics 5-7
⑨ CN808-EEV
#1~#4: EEV SIGNAL
#5 : DC12V
#6 : DC12V
⑩ CN807-LOUVER5
#1 : DC12V
#2~#5: LOUVER SIGNAL
ᐷ CN301-DOWNLOAD
⑬ CN83-EXT CTRL
#1: GND
#2: EXTERNAL CONTROL
SIGNAL
⑭ CN414-HUMIDITY SENSOR
#1 : DC5V
#2 : GND
#3 : THERMISTOR SENSOR
#4 : HUMIDITY SENSOR
⑰ CN411-FLOAT SWITCH
#1: FLOAT SWITCH SIGNAL
#2: GND
㉑ CN311-2 WIRED SUB
⑱ CN805-LOUVER1/2
#1 : DC12V
#2~#5: LOUVER SIGNAL
㉒ CN401-HUMAN SENSING
#1: DC12V
#2: MAIN-HUMAN SENSOR
COMM(TXD)
#3: MAIN-HUMAN SENSOR
COMM(RXD)
#4: GND
⑮ CN413:THERMISTOR
#1 : EVA-IN SENSOR
#2 : GND
#3 : EVA-OUT SENSOR
#4 : GND
#5 : DISCHARGE SENSOR
#6 : GND
⑲ CN103-DRAIN PUMP
#1: DRAIN PUMP (DC12V)
#2: GND
㉓ CN801-SPI
#1: GND
#2: GND
#3: SPI SIGNAL (DC12V)
⑫ CN806-LOUVER3/4
#1 : DC12V
#2~#5: LOUVER SIGNAL
#6 : DC12V
#7~#10: LOUVER SIGNAL
⑯ CN201-EEPROM
#1: GND
#3: DC5V
#4: EEPROM_SELECT
#5: EEPROM_SO
#6: EEPROM_SI
#7: EEPROM_CLK
⑳ CN804-VENTILATOR
#1: DC12V
#2: VENT SIGNAL OUTPUT(GND)
㉔ TE04-COMMUNICATION
#1: COM1(F1)
#2: COM1(F2)
#3: V1(DC12V)
#4: V2(GND)
#5: COM2(F3)
#6: COM2(F4)
5-8 Samsung Electronics
■ AJ***NBNDCH/AA
-DISPLAY PCB
1
① CN808-EEV
#1: DC12V
#2: LED_Operation
#3: LED_Defrost
#4: LED_Timer
#5: -
#6: LED_Filter
#7: -
#8: Remocon Signal Out
#9 : Panel Select
#10: Remocon Signal In
#11: GND
#12: DC5V
#13: -
Samsung Electronics 5-9
5-2. Outdoor Unit
Q AJ020JCJ2CH/AJ024JCJ3CH
3
1
# .-)# /-$/7 .
^-)# /-$/7 .
# .% 6 !/54 3 % .3 /2
^% 6 !/54!
^% 6 !/54"
^% 6 !/54#
^% 6 !/54$
# .% 6 !).3 % .3 /2
^% 6 !).!
^% 6 !)."
^% 6 !).#
^% 6 !).$
# .-!).(5"
6
' .$
6
# /-
# /-
# .!3 0 2 /-
^-)# /-$/7 .
!3 0 2 /53 ).'
# .$ISPLA Y
^3 EGMENT^
^+ EYIN^
^' RID^
# .% % 6 $
^% % 6 S IGNAL
$# 6
# .$# 6
$# 6
' .$
8
7
6
5
4
2
Samsung Electronics 5-5
5-6
Q AJ036JCJ5CH MAIN PCB
1 11 12 2
3
4
5
6
7
1 CN11-ACPOWER
#1~#3 : 220~240 Vac
5 CN82-EEV B
#1~#4 EEV signal
#5 DC 12V
9 CN31 - COMM
#1 : COM1
#2 : COM2
2 CN75-4WAY V/V
#1~#3 : 220~240 Vac
6 CN81-EEV A
#1~#4 EEV signal
#5 DC 12V
10 CN33-Sub Comm
#1 DC12V
#2 GND
#3 DC5V
#4 COM1
#5 COM2
10 9 8
3 CN43-Sensor
#1~#2 Outdoor Temp
#3~#4 Cond Temp
#5~#6 Discharge Temp
#7~#8 OLP Temp
7 CN39-COMM-INV
#1 TXD
#2 RXD
#3 GND
#4 DC 5V
#5 DC 12V
#6 INV. SMPS signal
11 CN37-MICOM DOWN
#1~#10 MICOM DOWN
4 CN81-EEV C
#1~#4 EEV signal
#5 DC 12V
8 CN12 - DC12V
#1 DC12V
#2 GND
12 CN35- AS PROM
#1~#7 MICOM DOWN
(AS PRO USING)
Samsung Electronics
Q AJ036JCJ5CH INVERTER PCB
2
1
3 6 4 7 5 8
① 3FBDUPS"#
3FBDUPS"8)5
3FBDUPS#8)5
⑤ $/%"$&/$0%&3
'PS48FOHJOFFSEFCVHHJOH
② 3FBDUPS"#
3FBDUPS"#-,
3FBDUPS##-,
⑥ $/'"/
%$7
/$
(/%
%$7
'"/31.
'"/31.GFFECBDL
③ $/ 1*/3&%$PNNVOJDBUJPO
39%59%
(/%%$7
%$7*/74.14TJHOBM
⑦ $/'"/
%$7
/$
(/%
%$7
'"/31.
'"/31.GFFECBDL
④ $/%PXOMPBEFS
39%@"5"3059%@"5"30
/$_%"5"TJHOBM
(/%%$7
⑧ $/$0.1
$0.16QIBTF 3&%
$0.17QIBTF #-6
$0.16QIBTF :&-
Samsung Electronics 5-7
Q AJ036JCJ5CH EMI PCB
2
3
1
① -"$108&3-QIBTF
-#3/
② /"$108&3/QIBTF
/4,:#-6
③ $/"$108&3
"$_7
Q AJ036JCJ5CH HUB PCB
1
5-8
2
7
6
1 CN33-Sub Comm
#1 DC12V
#2 GND
#3 DC5V
#4 COM1
#5 COM2
5 CN52 EVA OUT SENSOR
#1~#2 EVA OUT A
#3~#4 EVA OUT B
#5~#6 EVA OUT C
#7~#8 EVA OUT D
#9~#10 EVA OUT E
2 CN10-MICOM DOWN
#1~#10 MICOM DOWN
6 CN83-EEV D
#1~#4 EEV signal
#5 DC 12V
3
4
5
3 CN10- AS PROM
#1~#7 MICOM DOWN
(AS PRO USING)
7 CN84-EEV E
#1~#4 EEV signal
#5 DC 12V
4 CN52 EVA IN SENSOR
#1~#2 EVA IN A
#3~#4 EVA IN B
#5~#6 EVA IN C
#7~#8 EVA IN D
#9~#10 EVA IN E
Samsung Electronics
6. Wiring Diagram
6-1. INDOOR UNIT
Q AJ009JNNDCH/AJ012JNNDCH/AJ018JNNDCH
Samsung Electronics
This Document can not be used without Samsung's authorization.
6-1
Q AJ007JNADCH/AJ009JNADCH/AJ012JNADCH/AJ018JNADCH/AJ024JNADCH
6-2
This Document can not be used without Samsung's authorization.
Samsung Electronics
Q AJ009JNLDCH/AJ012JNLDCH/AJ018JNLDCH
Samsung Electronics
This Document can not be used without Samsung's authorization.
6-3
AJ***NBNDCH/AA
6-11
This Document can not be used without Samsung's authorization.
Samsung Electronics
6-2. OUTDOOR UNIT
Q AJ020JCJ2CH/AJ024JCJ3CH
6-4 Samsung Electronics
Q AJ036JCJ5CH
Samsung Electronics 6-5
MEMO
6-6 Samsung Electronics
7. Reference Sheet
7-1 Selecting Area for Installtaion
Select an area for installation that is suitable to customer's needs.
7-1-1 Indoor Unit
1 Make sure that you install the indoor unit in an area providing good ventilation.
It must not be blocked by an obstacle affecting the airflow near the air inlet and the air outlet.
2 Make sure that you install the indoor unit in an area allowing good air handling and endurance of vibration of the indoor unit.
3 Make sure that you install the indoor unit in an area where there is no source of heat or vapor nearby.
4 Make sure that you install the indoor unit in an area from which hot or cool air is spread evenly in a room.
5 Make sure that you install the indoor unit in an area away from TVs, audio units, cordless phones, fluorescent lighting fixtures and other electrical appliances (at least 1 meter).
6 Make sure that you install the indoor unit in an area which provides easy pipe connection with the outdoor unit, and easy drainage for condensed water.
7 Make sure that you install the indoor unit in an area which is large enough to accommodate the measurements shown in figure on the next page.
It is harmful to the air conditioner if it is used in the following environments: greasy areas (including areas near machines), salty areas such as coast areas,areas where sulfuric gas is present such as hot spring areas.
Contact your dealer for advice.
Samsung Electronics 7-1
7-1-2 Outoor Unit
1 Make sure that you install the outdoor unit in area not exposed to the rain or direct sun light.(Install a separate sunblind if exposed to direct sun light.)
2 Make sure that you install the outdoor unit in area allowing the good air moment, not amplifying noise or vibration, especialy to avoid disturbing neighbors. (Fix the unit firmly if it is mounted in a high place.)
3 Make sure that you install the outdoor unit in area providing the good ventilation and which is not dusty. It must not be blocked by any obstacle affecting the airflow near the air inlet and the air outlet.
4 Make sure that you install the outdoor unit in area free from animals or plants.
5 Make sure that you install the outdoor unit in area not blocking the traffic.
6 Make sure that you install the outdoor unit in area easy to drain condensed water from the indoor unit.
7 Make sure that you install the outdoor unit in area which provides easy connection within the maximum allowable length of a coolant pipe.
If you install within 50m, no add a additional refrigerent : This model is chargeless within 50m.
8 Make sure that you install the outdoor unit in an area which is large enough to accommodate the measurements shown in figure on the next page.
If you install the excessive length of pipe, add additional refrigerant as 20g or 10g per unit meter; refer to the table below.
Model
AJ020JCJ2CH
AJ024JCJ3CH
AJ036JCJ5CH
Total connecting pipe length (L)
LT≤30m
LT>30m
LT≤40m
LT>40m
LT≤40m
LT>40m
Adding refrigerant
Chargeless
(LT- 30m)x10g
Chargeless
(LT- 40m)x10g
Chargeless
(LT- 40m)x20g
7-1-3 Remote Control Unit
1 Make sure that you use the remote control unit in an area free from obstacles such as curtains etc, which may block signals from the remote control unit.
2 Make sure that you put the remote control unit in an area not exposed to direct sunlight, and where there is no source of heat.
3 Make sure that you use the remote control unit in an area away from TVs, audio units, cordless phones, fluorescent lighting fixtures and other electrical appliances (at least 1 meter).
7-2 Samsung Electronics
7-2 Connecting Up and Purging the Circuit
The air in the indoor unit and in the pipe must be purged. If air remains in the refrigeration pipes, it will affect the compressor, reduce to cooling capacity and could lead to a malfunction. Refrigerant for air purging is not charged in the outdoor unit. Use Vacuum Pump as shown at the right figure. Each unit must be purged in turn.
Q AJ020JCJ2CH/AJ024JCJ3CH/AJ036JCJ5CH
1 Check the piping connections.
2 Connect the charging hose of low pressure side of manifold gauge to the packed valve having a service port (5/8” Packed valve) as shown at the figure (Value stem: 1/2” - 20UNF).
ý Make the electrical connection and leave the system
WARNING into “stand by mode”. Do not turn on the system! This is necessary for better vacuum operation (full OPEN position of Electronic Expansion Valve - EEV -).
3 Open the valve of the low pressure side of manifold gauge counter clockwise.
4 Purge the air from the system using vacuum pump for about
30 minutes.
- Close the valve of the low pressure side of manifold gauge clockwise.
- Make sure that pressure gauge show -0.1MPa(-76cmHg) after about30 minutes.
This procedure is very important in order to avoid gas leak.
- Turn off the vacuum pump.
- Remove the hose of the low pressure side of manifold gauge.
5 Set valve cork of both liquid side and gas side of packed valve to the open position.
6 Mount the valve stem nuts and the service port cap to the
WBMWFBOEUJHIUFOUIFNBUUIFUPSRVFPGLHGtDNXJUIB torque wrench.
7 Check for gas leakage.
- At this time, especially check for gas leakage from the 3-way valve’s stem nuts, and from the service port cap.
A
B
C
Vacuum
Pump
Valve stem
Stem cap
Service port
Samsung Electronics 7-3
7-3 Refrigerant Refill
Refill an air conditioner with refrigerant when refrigerant has been leaked at installing or using.
1) Purge air(for new installation only).
2) Turn the 3 way valve clockwise to close, connect the pressure gauge (low pressure side) to the service valve, and open the 3 way valve again. Compound gauge
3) Connect the tank to refill with refrigerant.
4) Set the unit to cool operation mode.
5) Check the pressure indicated by the pressure gauge(low pressure side). in a regular and high operation mode.
For mounting other and of hose when not in use
AJ020JCJ2CH
AJ024JCJ3CH
AJ036JCJ5CH
Suspension hook
High pressure gauge
Hand wheel
Finger tight fittings
Connected to high pressure side
Charging line
6) Open the refrigerant tank and fill with refrigerant until the rated pressure is reached.
* It is recommended not to pour the refrigerant in too quickly, but gradually while operating a pressure valve.
7) Stop operation of the air conditioner.
8) Close the 3 way valve, disconnect the pressure gauge, and open the 3 way valve again.
9) Close the cap of each valve.
7-4 Samsung Electronics
7-4 Refrigerant Adjustment
Class At installation
Connection Pipe Length Air-Purge Method
Refrigerant
Adjustment
Standard 30m
(AJ020JCJ2CH)
Standard 40m
(AJ024JCJ3CH)
Unnecessary
Standard 40m
(AJ036JCJ5CH)
Standard<Total≤50m
(AJ020JCJ2CH)
Standard<Total≤70m
(AJ024JCJ3CH)
At service
Air-Purge Method
Refer to the detailed conneting up and purging the circuit.
(7-2 page)
In case of exeeding total pipe lengh 30m,
Add "10g" of refrigerant
(R410A) for every 1m
In case of exeeding total pipe lengh 40m,
Add "10g" of refrigerant
(R410A) for every 1m
Purge air using a vaccume pump or an additional refrigerant cylinder.
Refrigerant Quantity refer to specification sheet
In case of exeeding total pipe lengh 30m,
Add "10g" of refrigerant
(R410A) for every 1m
In case of exeeding total pipe lengh 40m,
Add "10g" of refrigerant
(R410A) for every 1m
Standard<Total≤80m
(AJ036JCJ5CH)
In case of exeeding total pipe lengh 40m,
Add "20g" of refrigerant
(R410A) for every 1m
In case of exeeding total pipe lengh 40m,
Add "20g" of refrigerant
(R410A) for every 1m
It would be the best choice to use the standard tube length to keep the basic quality of Room Air conditioner, for example cooling capacity, sound level, vibration level, and reliability.
But, according to a certain different installation condition, the connection tube length could be changed in the recommendation length that is shown above.
In this case, installer should keep the installation condition to keep the quality of Room Air conditioner.
O Refrigerant should be charged additionally as written above according to the change of the length of the connection tube.
It needs to affect the decrease in cooling and heating capacity or of the reliability of compressor that may be caused by a lac k of refriger ant.
O Installation position difference between the indoor unit and the outdoor unit should not exceed over than 15 meters.
O When the connection pipe is been extended longer than 5 meters, it might need to change the diameter of the electrical wire to a larger size in order to keep a voltage drop for starting room air conditioner is not less than 85% of the rated voltage. And then, a voltage meter will be useful to check the rate of the voltage drop.
7-5 Flare Nut Fixing Torque
Outer Diameter (D)
ø6.35 mm(1/4")
ø9.52 mm(3/8")
ø12.70 mm(1/2")
ø15.88 mm(5/8")
Samsung Electronics
Thickness
0.8 mm(0.03 ")
0.8 mm(0.03 ")
0.8 mm(0.03 ")
0.8 mm(0.03 ")
N·m
14~18
34~42
49~61
68~82
Torque ft·lb(kgf·cm)
10.1~13.0(140~180)
25.3~31.1(350~430)
36.2~44.8(500~620)
49.9~60.0(690~830)
7-5
7-6 "Pump down" Procedure
Pump down will be carried out when an evaporator is replaced or when the unit is relocated in another area.
AJ020JCJ2CH/AJ024JCJ3CH/AJ036JCJ5CH
1) Remove the caps from the 3/8" service valve and the 5/8" service valve.
2) Turn the 5/8" service valve clockwise to close and connect a pressure gauge (low pressure side) to the service valve, and open the 5/8" service valve again.
3) Set the unit to cool operation mode.
(Check if the compressor is operating.)
4) Turn the 3/8" service valve clockwise to close.
5) When the pressure gauge indicates "0" turn the
5/8" service valve clockwise to close.
6) Stop operation of the air conditioner.
7) Close the cap of each valve.
7-6
5/8" Service Valve
3/8" Service Valve
Relocation of the air conditioner
Ŗ Refer to this procedure when the unit is relocated.
Ŗ 1. Carry out the pump down procedure (refer to the details of ‘ pump down ’ ).
Ŗ 2. Remove the power cord.
Ŗ 3. Disconnect the assembly cable from the indoor and outdoor units.
Ŗ 4. Remove the flare nut connecting the indoor unit and the pipe.
Ŗ 4. material entering.
Ŗ 5. Disconnect the pipe connected to the outdoor unit.
Ŗ 4. material entering.
Ŗ 6. Make sure you do not bend the connection pipes in the middle and store together with the cables.
Ŗ 7. Move the indoor and outdoor units to a new location.
Ŗ 8. Remove the mounting plate for the indoor unit and move it to a new location.
Samsung Electronics
7-7 Index of Model Name
Model Code (INDOOR)
B H
/
H
Buyer Name
Capacity (3 DIGIT)
KW / BTU / Liter
Code
Product Type
Type
AM DVM
AJ PMA
AC CAC (USD) / ASD
AE
AN
AK
AG
EHS
VTL
PAK (Packaged
System)
CHR
Code
E
F
H
J
K
M
N
Year
Type
2012
2013
2014
2015
2016
2017
2018
Code
S
N
X
A
B
C
Separator
Type
Normal Set (NASA)
Indoor (NASA)
Outdoor(NASA)
Set (NASA)
Indoor (Non NASA)
Outdoor (No NASA)
E
V
Q
4
H
M
L
R
A
T
D
7
Code
1
2
N
Product Type (Indoor)
Type
1 WAY CST
2 WAY CST
MINI 4 WAY CST
4 WAY CST
HSP DUCT
MSP DUCT
LSP DUCT
FRESH AIR INTAKE DUCT
RAC-A3050(EEV)
RAC-NEO FORTE(EEV)
RAC-NEO FORTE
RAC-Domestic
RAC-MALDIVE
RAC-A3050
RAC-Crystal
ö / can be removed from the buyer card if there are not enough digits.
Code
F
P
D
S
Grade
Type
FLAGSHIP
PREMIUM
DELUXE
STANDARD
E
F
C
D
Code
A
B
Rating Voltage
Type
A(115V, 60hz, 1Ф)
B(220V, 60Hz, 1Ф)
C(208~230V, 60Hz)
D(200~220V, 50Hz)
E(220~240V, 50Hz)
F(208~230V, 60Hz, 3Ф)
G
H
G(380~415V, 50Hz, 3Ф)
H(380V, 60Hz, 3Ф)
J J(460V, 60Hz, 3Ф)
K K(220~240V, 50/60Hz, 1Ф)
M M(127V, 50Hz)
N N (380~415V, 50/60Hz, 3Ф)
Code
C
H
R
A
B
N
Refrigerant
Type
COOLING ONLY
HEAT PUMP
HEAT RECOVERY
Refrigerant
R410a
R22
Cooling only
Heat Pump
N/A
R134
Samsung Electronics 7-7
Model Code (OUTDOOR)
J H
Capacity
BTU/H(*100)
CMH(*10)
HP(/10)
WATT(*100)
Code
E
F
H
J
K
L
Year
Type
2012
2013
2014
2015
2016
2017
J H
Code
Product Type
Type
AM
AJ
DVM
PMA
AC CAC (USD) / ASD
AE EHS
AN
AK
AG
VTL
PAK
CHR
Code
J
P
Code
S
N
X
A
B
C
Separator
Type
Normal Set (NASA)
Indoor (No NASA)
Outdoor(NASA)
Set (NASA)
Indoor (NASA)
Outdoor (No NASA)
Feature
Type
IFREE JOINT MULTI
PACK MULTI
/ H
Buyer Name
Code
2
3
4
5
N
Code
A
B
C
D
Rating Voltage
Type
A(115V, 60hz, 1Ф)
B(220V, 60Hz, 1Ф)
C(208~230V, 60Hz)
D(200~220V, 50Hz)
E
F
G
E(220~240V, 50Hz)
F(208~230V, 60Hz, 3Ф)
G(380~415V, 50Hz, 3Ф)
H
J
H(380V, 60Hz, 3Ф)
J(460V, 60Hz, 3Ф)
K K(220~240V, 50/60Hz, 1Ф)
M M(127V, 50Hz)
N N (380~415V, 50/60Hz, 3Ф)
Grade
Type
2 Room
3 Room
4 Room
5 Room
Multi Room
Code
C
H
R
A
B
N
Refrigerant
Type
COOLING ONLY
HEAT PUMP
HEAT RECOVERY
Refrigerant
R410a
R22
Cooling only
Heat Pump
N/A
R134
7-8
J PMA is FJM Model.
ö / can be removed from the buyer card if there are not enough digits.
Samsung Electronics
7-8 Refrigerating Cycle Diagram
AJ020JCJ2CH CYCLE DIAGRAM
AJ024JCJ3CH CYCLE DIAGRAM
Samsung Electronics 7-9
AJ036JCJ5CH CYCLE DIAGRAM
7-10 Samsung Electronics
7-9 Pressure & Capacity mark
Power/Heat
1
4.1868
1.163
W
0.29307
745.7
9.8067
1.3558
cal/s
0.23885
1
0.27778
0.06999
178.11
2.3423
0.32383
kcal/h
0.85985
3.6
1
0.252
641.19
8.4322
1.1658
Btu/h
3.4121
14.286
3.9683
1
2,544.4
33.462
4.6262
HP
0.001341
0.0056146
0.0015596
3.9302x10
-4
1
0.013151
0.0018182
kg.m/s
0.10197
0.42693
0.11859
0.029885
76.04
1
0.13826
ib.m/s
0.73756
3.088
0.85778
0.21616
550
7.233
1
7-10 The abbreviated technology words & the definition of technology terms
Abbreviated technology words
COMP(Full name compressor)
BLOWER
FAN
ASS’Y CONTROL BOX
(Full name : Assemble control box)
MOTOR
ASS’Y EVAP/ASS’Y COND
(Full name : assemble evaporator / assemble condenser)
Definition of technology terms
One that compresses, especially a machine used to compress gases.
One that blows, especially a mechanical device, such as f fan, that produces a current of air.
A device for reeating a current of air or a breeze.
A restraining device of air-condition, measure, or limit.
Something, such as a machine or an engine, that produces or imparts motion.
Heat exchanger; A device, used to transfer heat from a fluid on one side of a barrier to a fluid on the other side without bringing the fluids into direct contact.
Samsung Electronics 7-11
7-11 Q & A for Non-trouble
Classification Class
Q
A
Cooling
Leakage
Smells
Q
A
Q
A
Q
A
Q
A
Q
A
Q
A
Q
A
Description
The cooling is weak.
When it is hot outside, its cooling capacity decreases due to the increase of the ambient temperature.
When the dust filter gets blocked or warm outside air gets in, the cooling capacity will decrease. So, make sure to clean the dust filter frequently, prevent heat loss by closing the doors and insulate the cooling area by using curtains, blinds, shades or window tinting.
The cooling is good generally. But, it gets weak when it is considerably hot.
It occurs when the outdoor unit is exposed to direct sun light and heat-up air is not ventilated well.
So, set up a sunblind over the outdoor unit and keep stuff away from the unit to increase the ventilation. When the cooling capacity decreases during a heat wave, clean the heat exchanger of the outdoor unit or spray some cold water to the heat exchanger to increase the cooling capability.
The cooling is weak. Does it need refrigerant charging?
It is not correct charging refrigerant regularly. Except that you have moved in several times or the connection pipes are broken, the refrigerant does not run low. So, when refrigerant is additionally charged, it could be costly and cause a product's failure. When the refrigerant leaks, all of it will escape in a short time resulting in cooling failure and no water coming out of the drain hose. So, if water comes out from the drain hose, it indicates the normal operation of the product and it does not need refrigerant charging.
It fails to do cooling.
When the air conditioner is set to Ventilation or the desired temperature is set higher than the current temperature, it fails to do cooling. In this case, select Cooling or set the desired temperature lower.
It floods the floor.
Place the drain hose properly. When it is not placed properly, the drain water would flow back flooding the floor. So, straighten out the drain hose for the water to be drained well.
Water drips at the drain connection (service valve) of the outdoor unit.
When a glass bottle is taken out of the refrigerator, moisture gets condensed on its surface due to the temperature differences. The same principle applies to the air conditioner. When cold refrigerant goes through the copper tube, moisture gets condensed on the surface of the tube and the connection areas. To prevent the water condensation, the pipes are insulated. But, the connection areas of the outdoor unit are not insulated for the purpose of maintenance or repair, and water gets condensed due to the temperature differences and drips down. Generally, it evaporates right away. But, when it drips much during muggy days, put a water pan on the floor.
It leaks even though a drain pump is used.
It occurs when the drain pump is plugged out or it is out of order. Check the power of the drain pump and the position of the drain hose, and when the pump is faulty, contact the drain pump manufacturer.
Samsung Electronics do not manufacture drain pumps. So, we are not able to correct the drain pump problems.
Whenever the air conditioner is turned on, it irritates my eyes and gives me a headache.
There are no components in the air conditioner irritating the eyes and sending out chemical smells.
But, when the air conditioner is turned on, other smell sources are sucked into the air conditioner and get out of it. So, find and root out the smell sources. Generally, it occurs at a interior renovated place, a pharmacy, a gasoline handling place, a tire shop, a second-hand book shop or an electronic
7-12 Samsung Electronics
Q & A for Non-trouble (cont.)
Classification Class
Smells
Operation
Q
A
Q
A
Q
A
Q
A
Q
A
Q
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Description component handling place; when its chemical or musty smells are sucked in and sent out, it can be misled that the air conditioner generates them. So, find and root out the problem or refresh the room frequently.
Whenever the air conditioner is turned on, it stinks.
There are no components in the air conditioner sending out chemical smells. But, when the air conditioner is turned on, other smell sources are sucked into the air conditioner and get out of it. So, find and root out the smell sources. Generally, when the drain hose is taken out to the washing room or there are sources of smells such as a diaper bin, a shoe shelf or a socks bin, bad smells generate.
Also, it occurs where glass cleaners or air fresheners are used; when they are sucked in interacting with dusts and moistures inside, bad smells generate. These kinds of organic materials noxious to human bodies. So, we recommend against the use of them.
Whenever the air conditioner is turned on, it smells sour.
When the room is papered recently, its paste smells would be sucked inside. Also, when the air conditioner is installed in the study room of young boys loving sweat-generating activities such as the basketball, excessive sweats evaporate and get sucked into the air conditioner resulting in bad smells. So, find and root out the problem or refresh the room frequently.
Whenever the air conditioner is turned on, it smells musty.
It is due to the improper keeping of the product after its use. When keeping the product, dry up the inside with the operation of Ventilation to prevent must. When the product is kept without drying up the inside with Ventilation, mold would grow inside resulting in must. So, open the windows and switch on the Ventilation function to get rid of the saturated smell inside.
Whenever the air conditioner is turned on, it sends out bad smells such as stale smells.
It occurs generally when there are pet animals in the house. Their smells stay at the same place.
But, when the air conditioner is turned on, the air gets circulated resulting in the circulation of the smells. So, find and root out the problem or refresh the room frequently.
It sends out bad smells.
When the air filter is filthy, it could send out bad smells. So, clean the filter and ventilate the room with the windows open while operating the Ventilation function.
It won't start.
There is a power failure or it is plugged out. Also, check if the power distribution panel is switched off.
It goes off during operation.
When the hot air does not escape properly, it goes off during operation. It occurs when it does not ventilate properly because the outdoor unit is covered, the back of the outdoor unit is blocked by a cardboard or a plywood panel, and the front of the outdoor unit is blocked by the closed window or other obstacles. Clear the above obstacles from the outdoor unit.
It generally works properly. But, when it's considerably hot, it goes off during operation.
It occurs when the outdoor unit is exposed to direct sunlight and the hot air does not escape properly.
Set up a sun blind over the outdoor unit and clear the neighboring obstacles from the outdoor unit to provide good ventilation. When it goes off frequently during a heat wave, it would prevent the turn-off and increase the cooling capacity cleaning the outdoor unit or spraying some water to the heat exchanger.
Samsung Electronics 7-13
Q & A for Non-trouble (cont.)
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Operation
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Description
The remote controller won't operate.
When the batteries run out or the transmitter or receiver of the remote controller is blocked by obstacles, change the batteries or keep the obstacles away from the controlling area. Also, the remote controller may not work under intensive light from a 3-wave length lamp or a neon sign due to the EMI.
In this case, take the remote controller closer to the receiver.
Who installs the air conditioner? (Relocation/Re-installation)
When relocating or re-installing the air conditioner, make sure to contact Samsung Electronics Service
Center or Authorized Service Agent and have them to do the job.(If not, it could cause personal injury or product damage.)
The cost for the relocation/re-installation of the air conditioner is subject to the customer's expense.
There is a cost table. But, our service engineer needs to visit to total up the cost correctly.
When you move in, make sure to contact Samsung Electronics Service Center or Authorized Service
Agent in advance to streamline the process.
Is it possible to install the outdoor unit outside?
It is possible to install it at a designated place in the apartment or on the rooftop nearby.
But, it's illegal hanging an angle iron case with the outdoor unit in it outside the apartment. Also, it is illegal obstructing passers-by with the outdoor unit installed outside.
What can be done to install the outdoor unit facing the road because it is a commercial building?
The following is an excerpt from Building Code going into effect from JUNE 1st 2005. "The exhaust pipe of a cooling or ventilation facility installed in a building adjacent to the streets of commercial or residential areas shall be installed higher than 2m to prevent the exhaust air from blowing directly to passers-by and the current facilities shall be corrected by MAY 31st 2005." So, please install it higher than 2m or not to blow the hot exhausting air directly to passers-by.
What about installing a windscreen during installation not to blow hot air directly to passers-by?
When the hot air from the front of the outdoor unit is blocked, the product's performance will be affected and it will fail to operate properly. So, keep it at least 300mm away from its surrounding walls and give it good ventilation.
7-14 Samsung Electronics
7-12 Common sense of refrigeration
Air supplier?
It supplies fresh air to the building or room through procedure of air circulation for fresh environment.
Effectiveness of air supplier
It diminishes the stress or fatigue and enhances vivid desire through fresh air circulation. Also, filthy air indoor is being cleaned by Air-Filter and it keeps clean and fresh environment and dehumidification. Temperature, humidity, air stream, cleanness are called for factors of air supplier and they are kept in proper condition for usage purpose.
Control the indoor air into cool or warm
Humidity
(Moisture)
Remove humidity in air or humidify
Temperature
(Heat)
Air stream
(Aircirculation)
Remove filthy dirt in air
Cleanness
(Air) Circulate air every corner of indoor
Four factors of air suppliers
The human body keeps regular temperature regarding the human body's freshness.
For keeping freshness, heat generated from human body should emit outside of the body by air circulation, conduction, emission, and evaporation. The human body feels freshness when the emission rate is 40~45%, which was emitted by a radiation when it is comfortable and warm, and air circulation and conduction is 20~30%, and evaporation is 20~24%.
It sometimes may depends on seasonal factor, wearing condition, age, sex and mental state other than indoor environment.
But generally the value of fresh indoor temperature is that below 0.2(m/s) of indoor air circulation, the temperature is 21~28 Ň C when the wall temperature is the same as the indoor's and relative humidity is 30~31% in summer, the winter temperature is
20~24 Ň C and relative humidity is 30~60% in winter.
Samsung Electronics 7-15
This Service Manual is a property of Samsung Electronics Co., Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
© Samsung Electronics Co., Ltd. 2018.
Printed in China.

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