Samsung CAC 2011 (Slim Duct) Service Manual

Refer to the service manual in the GSPN(see the rear cover) for the more information.

AIR CONDITIONER CONTENTS

SYSTEM AIR CONDITIONERModel : NS100SSXEA NS090SDXEA NS090SSXEA NS090SSXEX NS100SSXEX NS100SDXEA NS125SDXEA

NS140SDXEA

RC100SHXEARC090SHXEARC090DHXEARC100DHXEARC100DHXGARC125DHXEBRC125DHXGARC140DHXEBRC140DHXGA

INDOOR UNIT OUTDOOR UNIT

1. Precautions

2. Product Specifications

3. Disassembly and Reassembly

4. Troubleshooting

5. Exploded Views and Parts List

6. PCB Diagram

7. Wiring Diagram

8. Schematic Diagram

9. Reference Sheet

NS090SDXEA, NS100SSXEANS090SSXEA, NS090SSXEX, NS100SSXEX

NS100SDXEANS125SDXEANS140SDXEA

RC090DHXEARC090SHXEARC100SHXEARC100DHXEARC100DHXGA

RC125DHXEBRC125DHXGARC140DHXEBRC140DHXGA

NS100SSXEA_E_33623A(1)_co.indd 1 2011-04-08 10:52:44

Contents

11. Precautions ........................................................................................................................................ 1-1 1-1 Precautions for the Service .............................................................................................................. 1-1 1-2 Precautions related to static electricity and PL ............................................................................ 1-1

1-3 Precautions related to product safety ........................................................................................... 1-2

1-4 Other precautions .............................................................................................................................. 1-2

12. Product Specifications ............................................................................................................... 2-1 2-1 The Feature of Product ..................................................................................................................... 2-1 2-2 Product Specifications ...................................................................................................................... 2-2

2-3 Specifications of optional items ...................................................................................................... 2-6

2-3-1 Accessories ............................................................................................................................... 2-6

13. Disassembly and Reassembly ............................................................................................... 3-1 3-1 Indoor Unit ......................................................................................................................................... 3-2 3-2 Outdoor Unit ..................................................................................................................................... 3-7

14. Troubleshooting ............................................................................................................................ 4-1 4-1 Indoor Display Error and Check Method ..................................................................................... 4-1 4-1-1 Wired Remocon Error Display(COM2) ................................................................................ 4-2

4-2 Outdoor LED Error Display and Check Method ........................................................................... 4-3

4-3 Setting Option Setup Method ........................................................................................................ 4-4

4-3-1 Type A(Setting Option) ......................................................................................................... 4-4

4-3-2 Type B(Setting Option Setup Method) ............................................................................... 4-6

4-3-3 Option code for each model ................................................................................................ 4-16 4-4 Items to be checked first ................................................................................................................. 4-17

4-5 Fault Diagnosis by Symptom .......................................................................................................... 4-18

4-5-1 No Power(completely dead) - Initial diagnosis ................................................................. 4-18

4-5-2 The Outdoor unit Power Supply error ................................................................................ 4-19

4-5-3 The Outdoor unit Fan error .................................................................................................. 4-20

4-5-4 Total current trip error ........................................................................................................... 4-21

4-5-5 In case of heating at the cooling mode or cooling at the heating mode .................... 4-22

4-5-6 Outdoor temperature sensor error ..................................................................................... 4-24

4-5-7 Discharge temperature sensor error .................................................................................. 4-25

4-5-8 Coil temperature sensor error .............................................................................................. 4-26

4-5-9 Fan error ................................................................................................................................... 4-27

4-5-10 DC-Link voltage sensor error ............................................................................................. 4-28

4-5-11 O.C.(Over Current) error ...................................................................................................... 4-29

NS090SDXEA_E_SM_33623A(1)_1.indd 1 2011-04-08 10:54:25

Contents

4-5-12 Communication error .......................................................................................................... 4-30

4-5-13 Compressor start error ........................................................................................................ 4-31

4-5-14 Compressor lock error ......................................................................................................... 4-32

4-5-15 DC Link Over voltage/ Low voltage error ........................................................................ 4-33

4-6 PCB Inspection Method ................................................................................................................... 4-34

4-6-1 Pre-inspection Notices ........................................................................................................... 4-34

4-6-2 Inspection Procedure ............................................................................................................ 4-34

4-6-3 Indoor Detailed Inspection Procedure ............................................................................... 4-34

4-6-4 Outdoor Detailed Inspection Procedure ........................................................................... 4-35

4-7 Main Part Inspection Method ......................................................................................................... 4-36

15. Exploded Views and Parts List ............................................................................................. 5-1 5-1 Indoor Unit ......................................................................................................................................... 5-1 5-2 Outdoor Unit ..................................................................................................................................... 5-7

5-3 Ass'y Control Out .............................................................................................................................. 5-11

16. PCB Diagram ..................................................................................................................................... 6-1 6-1 PCB Diagram ...................................................................................................................................... 6-1 6-1-1 Indoor Unit .............................................................................................................................. 6-1

6-1-2 Outdoor Unit PCB ................................................................................................................... 6-3

17. Wiring Diagram .............................................................................................................................. 7-1

6-1 Indoor Unit ......................................................................................................................................... 7-1 6-1 Outdoor Unit ..................................................................................................................................... 7-2

18. Schematic Diagram ...................................................................................................................... 8-1

8-1 Indoor Unit ......................................................................................................................................... 8-1 8-1-1 MAIN PCB ................................................................................................................................. 8-1

8-1-2 Outdoor Unit PCB ................................................................................................................... 8-2

1

9. Reference Sheet .............................................................................................................................. 9-1 9-1 Index for Model Name ...................................................................................................................... 9-1 9-2 Refrigerating Cycle Diagram............................................................................................................ 9-3

9-3 Pressure Graph ................................................................................................................................... 9-4


Samsung Electronics 1-1

1. Precautions

1-1 Precautions for the Service

Use the standard parts when replacing the electric parts. Confirm the model name, rated voltage, rated current of the electric parts.

When repairing the equipment, connection of the harness parts must be firm and solid. A loose connection may cause noise or other malfunction.

When assembling and disassembling the equipment while it is laid down, lay it on soft cloth. Otherwise it may scratch the back of the exterior of the product.

Remove dust or dirt completely from the housing block, wiring block and service parts during repair. This helps prevent the danger of fire caused by tracking or short circuit.

Fasten the valve caps of service valves and charging valves of outdoor unit as much as possible using adjustable wrenches.

Check the status of the components assembly after repair service. The status must be the same as before the repair service.

1-2 Precautions related to static electricity and PL

The PCB power supply block is susceptible to static electricity. Therefore, care must be taken during repair or measuring while the power is on.

Wear insulation gloves for PCB repair or measuring.

Check whether the installation location is at least two meters away from other electronic products such as TV, video, or audio.

Otherwise, the video quality might be degraded or noise might be generated.

Do not let end users repair the products themselves. Unauthorized disassembly might cause electric shock or fire.


1-2 Samsung Electronics

1-3 Precautions related to product safety

Do not pull the power cord and do not touch the power plug or aux power switch with wet hands. It might cause electric shock or fire.

A damaged power line or power plug must be replaced to prevent danger.

Do not bend the power cable with excessive force, and do not place a heavy weight on the case as it might damage the cable.

It might cause electric shock or fire.

Do not use multiple electric outlets. This might cause electric shock or fire.

Connect the ground terminal when necessary. You must connect the ground terminal if you determine that there is a danger of electric leakage due to moisture or water.

Unplug the power cable or turn off the auxiliary power switch for electric part replacement and repair service. Otherwise it might cause electric shock.

Instruct end users to separate the batteries from the remote controllers and store them separately when the product is not used for long time.

Otherwise leakage from the dry cell may cause problems with the remote controller.

1-4 Other precautions

The pipes should have no leaks during installation, and the compressor must be stopped before removing connecting pipes for pump down work. Operating the compressor while the service valve is open and coolant pipe is not properly

connected may cause explosion or injury due to abnormal high pressure created inside the coolant cycle as the air can be

absorbed through the pipe.

Pump Down work procedure (When uninstalling the product) Turn on the air conditioner, select cooling operation, and run the compressor for more than three minutes.

Release the high pressure and low pressure valve caps.

Close the high pressure valve completely using an L-wrench

After about two minutes, close the low pressure valve completely.

Stop running the air conditioner.

Separate the connecting pipe.



2. Product Specifications

2-1 The Feature of Product

Built-in Cassette Type

After installed, the air conditioner can be harmonized with a room interior.

High Performance & Energy Saving

With the advanced BLDC inverter technology, it makes a room cool with highly energy saving and arises the efficiency of

air conditioner.

Long Piping(Length & Height)

It can give the benefit to the installers and aries the reliability of the air conditioner.

Long Ambient Operation(In Low Temperature)

It can arise the reliability and the capacity of the air conditioner, especially operated in low temperature.

Eco-friendly Product(Lead-Free, RoHS, WEEE)



ITEMNS090SDXEA

/RC090DHXEA

NS090SSXEANS090SSXEX

/RC090SHXEA

NS100SSXEANS100SSXEX

/RC100SHXEA

IMAGE

Indoor Unit

Outdoor Unit

Remote Controller

Power Product 1, 220~240V/50Hz 1, 220~240V/50Hz 1, 220~240V/50Hz

Indoor L x H x D mm 1150x480x320 1150x480x260 1150x480x260

Outdoor L x H x D mm 940x330x998 940x330x998 940x330x998

Indoor Product kg(Net) 39.0 34.0 34.0

Outdoor Product kg(Net) 72.0 72.0 72.0

CapacityCooling(STD) W 9000 9000 10000

Heating(STD) W 10000 9500 11200

Power Consumption

Cooling(STD) W 2800 3200 3560

Heating(STD) W 2770 2780 3720

Operation current

Cooling(STD) A 13.0 14.0 16.0

Heating(STD) A 12.5 13.0 15.0

Noise (Cooling/Heating)

Indoor unitIn case of strongest air

blowA 48/49 49/50 49/50

Outdoor unitIn case of strongest air

blowA 58/60 59/62 59/62

Refrigerant g 3000 2500 2500

Connecting PipeLiquid mm 9.52 9.52 9.52

Gas mm 15.88 15.88 15.88

Additional Refrigernat g/m 50 50 50

Standard m 5 5 5

Extension length(Total) m 50 50 50

Extension length(Elevation) m 30 30 30

Option CodeProduct Option

011044-156299-275A64-350000

011044-156293-275A64-370000

011044-156293-276470-370000

Installation Option020000-100000-200000-300000

020000-100000-200000-300000

020000-100000-200000-300000

2-2 Product Specifications



ITEM NS100SDXEA/RC100DHXEA NS100SDXEA/RC100DHXGA

IMAGE

Indoor Unit

Outdoor Unit

Remote Controller

Power Product 1, 220~240V/50Hz 3, 380~415V/50Hz

Indoor L x H x D mm 1200x650x360 1200x650x360

Outdoor L x H x D mm 940x330x998 940x330x998

Indoor Product kg(Net) 55.0 55.0

Outdoor Product kg(Net) 72.0 81.0

CapacityCooling(STD) Btu or W 10000 10000

Heating(STD) Btu or W 11200 11200

Power Consumption

Cooling(STD) W 3120 3120

Heating(STD) W 3100 3100

Operation current

Cooling(STD) A 13.8 5.0

Heating(STD) A 13.5 5.0


Indoor unitIn case of strongest air

blowdB 49/50 49/50

Outdoor unitIn case of strongest air

blowdB 59/63 59/63

Refrigerant g 3000 3100

Connecting PipeLiquid mm 9.52 9.52

Gas mm 15.88 15.88

Additional Refrigernat g/m 50 50

Standard m 5 5

Extension length(Total) m 50 50

Extension length(Elevation) m 30 30

Option CodeProduct Option 011044-1560E8-276470-370000 011044-1560E8-276470-370000

Installation Option 020000-100000-200000-300000 020000-100000-200000-300000

Product Specifications (cont.)




ITEM NS125SDXEA/RC125DHXEB NS125SDXEA/RC125DHXGA

IMAGE

Indoor Unit

Outdoor Unit

Remote Controller


Indoor unit Product L x H x D mm 1200x650x360 1200x650x360

Outdoor unit Product L x H x D mm 940x330x1210 940x330x1210

Indoor unit Product kg(Net) 55.0 55.0

Outdoor unit Product kg(Net) 88.0 91.0



Power consumptionCooling(STD) W 3890 3890


Operation currentCooling(STD) A 17.8 6.0



Indoor unit

In case of strongest air blow

dB 50/51 50/51

Outdoor unit


dB 59/61 59/61



Gas mm 15.88 15.88

Additional Refrigerant(g/m) g/m 50 50

Standard m 5 5



Option Code

Product Option

011044-1570F8-277D8C-370000 011044-1570F8-277D8C-370000

Installation Option

020000-100000-200000-300000 020000-100000-200000-300000



ITEM NS140SDXEA/RC140DHXEB NS140SDXEA/RC140DHXGA

IMAGE

Indoor Unit

Outdoor Unit

Remote Controller


Indoor unit Product L x H x D mm 1200x650x360 1200x650x360

Outdoor unit Product L x H x D mm 940x330x1210 940x330x1210

Indoor unit Product kg(Net) 55.0 55.0

Outdoor unit Product kg(Net) 88.0 91.0



Power consumptionCooling(STD) W 4650 4650


Operation currentCooling(STD) A 21.3 7.2



Indoor unit


dB 50/51 50/51

Outdoor unit


dB 60/62 60/62



Gas mm 15.88 15.88

Additional Refrigerant(g/m) g/m 50 50

Standard m 5 5



Option Code

Product Option

011044-167208-278CA0-370000 011044-167208-278CA0-370000

Installation Option

020000-100000-200000-300000 020000-100000-200000-300000




Item Description Code No. Qty Remark

Users manual DB98-28944A 1

Essential Offer

Installation manual DB98-28943A 5

Insulation

DB62-03439J 1

DB62-03439H 1

Insulation Drain In DB62-03440H 1

Insulation Install Inlet

DB72-00143E 1

DB72-00143G 1

Ass'y Holder Drain Pipe DB90-02064A 1

Ass'y Drain Hose Joint DB94-00758A 1

2-3 Specifications of optional items

2-3-1 Accessories



Product Specifications

Item Descriptions Code-No. Q'TY Remark

Receiver & display unitDB93-00449A

(MRK-B00)1

Concealed type

STS 2S-2x10 Tapped Screw - 4

2S-4x12 Tapped Screw - 2



Wire kitDB39-00223A

(MRW-10A)1

Receiver & display unitDB93-01066A

(MRK-A00)1

Standard type

M4x12 Tapped Screw - 7

Cable-tie - 2



Wire kitDB39-00223A

(MRW-10A)1

Accessories (cont.)

Receiver & display unit & Wire kit





Wireless remote controllerDB93-00251G

(ARH-401)1

Optional

Batteries for remote controller (specification: "AAA" type)

DB47-90024A 2

Remote controller holder DB61-00204A 1

STS 2S-2x10 Tapped Screw 6002-000581 2



Accessories (cont.)

Wireless Remote controller




Accessories (cont.)

Wireless Remote Controlle


Wireless remote controllerDB93-04858C

(MR-BH01)1

Optional

Batteries for remote controller (specification: "AAA" type)

DB47-90024A 2

Remote controller holder DB61-03147A 1

STS 2S-2x10 Tapped Screw 6002-000581 2






Accessories (cont.)

Wireless remote controller



Wired remote controllerDB97-14333C(MWR-WH02)

1

Optional

Cable tie DB65-10088B 2

Cable clamp DB65-10074E 5

M416 Tapped Screw 6002-000474 7

Indoor unit power drawing cable DB39-00221A 1

Communication cable of thewired remote controller

DB39-00933A 1

Wire joint DB39-90020A 1









Accessories (cont.)

Centralized controller


Centralized controllerDB93-03425C(MCM-A202)

1

Optional



M4x16 Tapped Screw 6002-000474 7






Accessories (cont.)

Function controller


Function controllerDB97-01077A(MCM-A100)

1

Optional






Transmitter


TransmitterDB97-00647P(MIM-B04A)

1

OptionalTransmitter power cable DB39-00378D 1

Transmitter communication cable DB39-00253D 1




Accessories (cont.)

DMS(Date Management Server)


DMSDB93-03709B

(MIM-D00)1

Optional


Cable clamp DB65-10074D 2


Bottom hook DB73-00320A 4





Item Remarks

+SCREW DRIVER

Adjustable Wrench(8mm, 10mm, 13mm)

Necessary Tools

3. Disassembly and Reassembly


Operating Instructions and Installation


No Parts Procedure Remark

1 Blower & Motor 1) After disassembling 16 places indicating screws, detach Ass'y Cabi Bottom Blower. (Use +Screw Driver)

2) Detach from Ass'y Control In the capacitor connection wire between the Motor Fan and housing connector.

3) After disassembling 2 places indicating screws, detach the 2 Fan Case. (Use +Screw Driver)

3-1 Indoor unit



Disassembly and Reassembly


4) After disassembling 2 places indicating screws, detach Fan Motor and Blower from the set.

2 Control In 1) After disassembling 1 Indicating screw, detach the Cover control. (Use +Screw Driver)

2) Detach the Motor-Fan and Sensor Connector from the PCB.





3) Disassemble 4 indicating screws and detach Control In from the set.

3 Drain Pan Work is possible when Disassembling the Ass'y Cabi Bottom Blower.

1) Disassemble 7 indicating screws and detach Ass'y Cabi Bottom Drain..





1) Disassemble 4 indicating screws and detach the Drain Pan. (Use +Screw Driver) (2 screws each at left and right side).

4 Evap Work is possible when Disassembling the Ass'y Drain Pan.

1) Disassemble 5 indicating screws to detach Cover Pipe. (Use +Screw Driver)





2) Disassemble Sensor on the Evap.

3) Disassemble 4 indicating screws which are in the near of Hanger Plate to detach the Evap. (Use +Screw Driver)

(2 screws each at left and right side)

It needs 2 peoples..




1 Cabi Front RH You must turn off the Power before disassembly.

1) Unscrew and remove two mounting screw in the Cabinet Front RH. (Use +Screw Driver)

2 Cabi Top 1) Unscrew and remove 9 screws on each side of the Cabinet-Top. (Use +Screw Driver)

3 Cabi Install Front 1) Unscrew and remove 1 screw in the Cabinet-Install Front. (Use +Screw Driver)

RC090DH*/RC090SH*/RC100DH*/RC100SH*

3-2 Outdoor Unit





4 Guard Cond 1) Pull the sensor from Guard Cond.

2) Unscrew and remove 4 screws in the Guard Cond. (Use +Screw Driver)

5 Cabi Back RH 1) Pull the sensor from Cabi Back RH.

2) Unscrew and remove 4 screws on each side of the Cabinet Back RH. (Use +Screw Driver)





6 Cabi Install Back 1) Unscrew and remove 1 screw in the Cabinet-Install Back. (Use +Screw Driver)

7 Cabi Front LF 1) Unscrew and remove 10 screws in the Cabinet-Front LF. (Use +Screw Driver)





8 Fan 1) Turn 2 mounting nuts as shown in the picture and remove it. (Use Adjustable Wrench)





9 Motor 1) Separate the Fan Propeller.2) Unscrew and remove the 8 Motor mounting screws. (Use +Screw Driver)

3) Disconnect the Motor wire From Ass'y Control Out.

10 Bracket Motor 1) Unscrew and remove 2 mounting screws in Bracket Motor. (Use +Screw Driver)





11 Control Out 1) Disconnect 4 Connecters From Ass'y Control Out.

2) Unscrew and remove 1 mounting screw in Control Out. (Use +Screw Driver)3) Separate Ass'y Control Out.





12 Ass'y 4way Valve 1) Purge the Coolant first.2) Unscrew and remove 2mounting screws

in muffler.3) Unscrew and remove 2 mounting screws

in Service Valve. (Use +Screw Driver)

4) Separate the pipe from the Entrance/Exit using a welder.

When removing the compressor, Heat Exchanger, and Pipe, purge the Coolant inside the Compressor completely and remove the pipe with a welding flame.





13 Ass;y EEV Valve 1) Unscrew and remove 2 mounting screws in Service Valve. (Use +Screw Driver)


14 Compressor 1) Unscrew and remove 1 mounting nut in Cover Terminal. (Use Adjustable Wrench)

2) Separate the Compressor Felt Sound.





3) As shown in the picture, unscrew and remove 3 mounting screws from the bottom. (Use Adjustable Wrench)

15 Cond Out 1) Unscrew and remove 3 screws on each side of the Assy Cond Out. (Use +Screw Driver)






1 Cabi Front RH You must turn off the Power before disassembly.

1) Unscrew and remove 2 mounting screw in the Cabinet Front RH. (Use +Screw Driver)

2 Cabi Top 1) Unscrew and remove 9 screws on each side of the Cabinet-Top. (Use +Screw Driver)

3 Cabi Install Front 1) Unscrew and remove 1 screw in the Cabinet-Install Front. (Use +Screw Driver)

RC125DH*/RC140DH*





4 Guard Cond 1) Pull the sensor from Guard Cond.

2) Unscrew and remove 4 screws in the Guard Cond. (Use +Screw Driver)

5 Cabi Back RH 1) Pull the sensor from Cabi Back RH.

2) Unscrew and remove 4 screws on each side of the Cabinet Back RH. (Use +Screw Driver)





6 Cabi Install Back 1) Unscrew and remove 1 screw in the Cabinet-Install Back. (Use +Screw Driver)

7 Cabi Front LF 1) Unscrew and remove 10 screws in the Cabinet-Front LF. (Use +Screw Driver)





8 Fan 1) Turn 2 mounting nuts as shown in the picture and remove it. (Use Adjustable Wrench)





9 Motor 1) Separate the Fan Propeller.2) Unscrew and remove the 8 Motor mounting screws. (Use +Screw Driver)

3) Disconnect the Motor wire From Ass'y Control Out.

10 Bracket Motor 1) Unscrew and remove 2 mounting screws in Bracket Motor. (Use +Screw Driver)





11 Control Out 1) Disconnect 4 Connecters From Ass'y Control Out.

2) Unscrew and remove 1 mounting screw in Control Out. (Use +Screw Driver)3) Separate Ass'y Control Out.





12 Ass'y 4way Valve 1) Purge the Coolant first.2) Unscrew and remove 2 mounting screws in Service Valve. (Use +Screw Driver)


When removing the compressor, Heat Exchanger, and Pipe, purge the Coolant inside the Compressor completely and remove the pipe with a welding flame.

13 Ass;y EEV Valve 1) Unscrew and remove 2 mounting screws in Service Valve. (Use +Screw Driver)






14 Compressor 1) Unscrew and remove 1 mounting nut in Cover Terminal. (Use Adjustable Wrench)


3) As shown in the picture, unscrew and remove 3 mounting screws from the bottom. (Use Adjustable Wrench)





15 Cond Out 1) Unscrew and remove 3 screws on each side of the Assy Cond Out. (Use +Screw Driver)



4. Troubleshooting

4-1 Indoor Display Error and Check Method

Error detection and reoperation If error occurs during the operation, badness is indicated by LED flickering and all operation is stopped except LED.

When reoperating by remote control and switch determine the error mode after normal operation.

: ON, : Flickering, X : OFF

If you turn off the air conditioner when the LED is flickering, the LED is also turned off.

Indoor unit LED lamp display at error detecting

Error type

LED Iamp display

RemarksOperation Defrost Timer Air flow Filter

Power reset X X X X

Error of temperature sensor in the indoor unit(Open/Short) X X X X

Error of heat exchanger sensor in the indoor unit X X X

Error of the outdoor temperature sensorError of the condensor temperature sensorError of the discharge temperature sensorPower reset

X X X

1. No communication for 2 minutes between indoor units (Communication error for more than 2 minutes)2. Indoor unit receiving the communication error from outdoor unit3. Outdoor unit tracking 3 minutes error4. When sending the communication error from the outdoor unit, the mismatching of the communication numbers and installed numbers after completion of tracking4. (Communication error for more than 2 minutes)

X X X

1. Error of electronic expansion valve close2. Error of electronic expansion valve open3. 2'nd detection of high temperature cond4. 2'nd detection of high temperature discharge5. Error of reverse phase6. Compressor down due to 6'th detection of freezing

X X

Detection of the float switch X X X

Error of setting option switches for optional accessories X X X

EEPROM option error



Troubleshooting

If an error occurs, is displayed on the wired remote controller. If you would like to see an error code, press the Test button.

4-1-1 Wired Remocon Error Display(COM2)

Display Explanation Remark

Indoor unit Communication Error

Communication ErrorIndoor/Outdoor unit Communication Time Out Error 60 Packet Over data

Indoor unit is not connected

Communication Error between Outdoor Main and Inverter Micom (Occurred after 1 minute detection in Main and Inverter)

Indoor Temp. Sensor(Open/Short Error)

Indoor Sensor ErrorIndoor Unit Eva in Sensor(Open/Short Error)

Indoor Unit Eva in Sensor Separation

Outdoor Temp. Sensor Error(Open/Short Error)

Outdoor Sensor ErrorCOND Temp. Sensor Error(Open/Short Error)

Inverter Compressor Discharge Temp. sensor Error(Open/Short Error)

Power cable miss connection error

Indoor Float Switch 2nd Detection

Self Diagnosys Error

Outdoor unit - indoor unit communication wire miss connection (Connected to Power terminal)

Outdoor unit refrigerant Full leakage(Gas leak)

Outdoor Fan 1 Error

Outdoor Fan 2 Error

Discharge over temperature

Outdoor UnitProtetion Control Error

[Inverter] Compressor starting error

Primary Current Over Trip error

[Inverter]IPM Over Current(O.C)

[Inverter] Compressor Rotation error

[Inverter] Current Sensor error

[Inverter] DC LINK Sensor error

[Inverter] EEPROM Read/Write Error

[Inverter] Heatsink temperature over ErrorOutdoor UnitProtetion Control Error

Outdoor unit Capacity Setup option error

Communication error between Indoor unit and wired remote control

Wired remote control errorCommunication error between Master and Slave wired remote control

COM1/COM2 Cross-installed error

Error of setting option for wired remote control COM2



4-2 Outdoor LED Error Display and Check Method

No.LED Display

Explanation Error CodeYellow Green Red

1 Power off/ VDD NG -

2 IPM Over Current(O.C)

3

Abnormal Serial communication/Power Cable Miss Connection

4 Compressor Starting error

5 Normal Operation -

6 Compressor Lock error

7 DC-Link voltage under/over error

8 Outdoor temperature sensor error

9 Discharge over temperature

10 Discharge temperature sensor error

11 Current sensor error

12 Compressor Limit error

13 Coil temperature sensor error

14 1min. Time out Communication

15 Fan error

16 OTP error

17 Compressor rotation error

18 Operation condition secession

19 DC-Link voltage sensor error

20 I_Trip error

21 GAS Leak error

22 Power Cable miss connection

23 Power ON reset(1sec) -

24 Capacity miss match

25 Test Operation at Cooling Mode -

26 Test Operation at Heating Mode -

Off Blink On



4-3 Setting Option Setup Method

4-3-1 Type A(Setting Option)

Option No. :

Step 1 : Enter the Option Setup mode.

1st Take out the batteries of remote control.

2ndPress the temperature button simultaneously

and insert the battery again.

3rd Make sure the remocon display shown as .

Step 2 : Enter the Option Setup mode and select your option according to the following procedure.

1

2

3

4

5

6

The default value is .

Otherwise, push the button to .

Every time you push the button, the display panel reads or repeatedly.

Push the button to set the display panel to .

Every time you push the button, the display panel reads . . . repeatedly.







Setting is not required if you must a volue which has a default.



1

2

3

4

5

6



Troubleshooting

7

8

9

10

11

12

Press button, then the default value is .









Setting is not required if you must a volue which has a default.



7

8

9

10

11

12

Step 3 : Upon completion of the selection, check you made right selections.

Press the Mode Selection key, to set the display part to and check the display part.

The display part shows .

Press the Mode Selection key, to set the display part to and check the display part.

The display part shows .

Step 4 : Pressing the ON/OFF button( ).

When pressing the operation ON/OFF key with the direction of remote control for unit, the sound Ding or Diriring is heard and the OPERATION ICON( ) lamp of the display is flickering at the same time, then the input of option is completed. (If the diriring sound isnt heard, try again pressing the ON/OFF button.)

Step 5 : Unit operation test-run.

First, Remove the battery from the remote control.

Second, Re-insert the battery into the remote control.

Third, Press ON/OFF button( ) withthe direction of remote control for set.

Error Mode

1st If all lamps of indoor unit are flickering, Plug out, plug in power plug again and press ON/OFF key to retry.

2ndIf the unit is not working properly or all lamps are continuously flickering after setting the option code, see if the correct option code is set up for its model.



Troubleshooting

4-3-2 Type B(Setting Option Setup Method)

Operation method Applicable button Indicating state

Step 1

Method)

Remove the battery of remote controller. Push the Off Timer and Cancel button

simultaneously.

Insert the battery.

Result)

When the display of remote controller

is indicated as shown in the right,

then go to the step 2.

Step 2

Method)

If the first digit of remote controller

shows "0", go to the step 3.

If it shows 1, press the Mode button one

time to change it into 0 and

then go to step 3.

Step 3

Method)

Input the second digit of option code

by pressing the High Temp button.

example) 021E311422852A311439421F

Result)

If 2 is displayed, go to the step 4

(whenver pressing the button, 1~9,

A,B,C,D,E,F are lit in order.)



Troubleshooting


Step 4

Method)

Input the third digit of option code by

pressing the Low Temp button.

example) 021E311422852A311439421F

Result)

If 1 is displayed, go to the step 5.

Step 5

Method)


pressing the High Fan button.

example) 021E311422852A311439421F

Result)

If E is displayed, go to the step 6.

Step 6

Method)


pressing the On Timer button.

example) 021E311422852A311439421F

Result)




Troubleshooting


Step 7

Method)

Input the sixth digit by pressing the Cancel

button.

example) 021E311422852A311439421F

Result)


Step 8

Method)

After completion up to step 7, pressing

Mode button.

1~7 steps are saved internally.

If the first number is 1 at the time, it is correct. So go to step 9.

If wanting to see the screen of 2~7 steps,

press the mode button repeatedly

to make the first digit 0.

Step 9

Method)

Input the eighth digit by pressing the

High Temp button.

example) 021E311422852A311439421F

Result)




Troubleshooting


Step 10

Method)

Input the ninth digit by pressing the

Low Temp button.

example) 021E311422852A311439421F

Result)


Step 11

Method)

Input the tenth digit by pressing the

High Fan button.

example) 021E311422852A311439421F

Result)


Step 12

Method)

Input the 11st digit by pressing the

On Timer button.

example) 021E311422852A311439421F

Result)




Troubleshooting


Step 13

Method)

Input the 12th digit by pressing the Cancel

button.

example) 021E311422852A311439421F

Result)


Step 14

Method)


Mode button.

Previous steps are saved internally.


If wanting to see previous screen, press

the mode button repeatedly to

make the first digit to with digit.

Error

If the On/Off, Timer and Fan indicatoris flickering, the wrong option code

is input. Put off the power of

indoor unit and turn it on again

and then input the option code again.

If the same error occurs, it is the

EEPROM is defective or not inserted.

Replace the PCB.

If all of On/Off, Timer, Fan and FilterSign indicator are flickering along with

the "Tiriring" sound, there is

option code already input which are

different from the current ones.

Check the option code and press

the button again if correct.

Option code will be input.

(Check the option code correctly.

At the time, if the same error

continues to occur, the

option code is out of input range.

Check the option code again and

repeat the step 1~14.



Troubleshooting


Step 15

Method)

Input the 14th digit by pressing the

High Temp button.

example) 021E311422852A311439421F

Result)

If A is displayed, go to the step 16.

Step 16

Method)

Input the 15th digit by pressing the Low

Temp button.

example) 021E311422852A311439421F

Result)


Step 17

Method)


High Fan button.

example) 021E311422852A311439421F

Result)




Troubleshooting


Step 18

Method)

Input the 17th digit by pressing the On Timer

button.

example) 021E311422852A311439421F

Result)


Step 19

Method)


Cancel button.

example) 021E311422852A311439421F

Result)


Step 20

Method)


Mode button.

Previous steps are saved internally.


If wanting to see previous screen, press

the mode button repeatedly to

make the first digit to with digit.



Troubleshooting


Step 21

Method)


High Temp button.

example) 021E311422852A311439421F

Result)


Step 22

Method)

Input the 21th digit by pressing the Low

Temp button.

example) 021E311422852A311439421F

Result)


Step 23

Method)


High Fan button.

example) 021E311422852A311439421F

Result)




Troubleshooting


Step 24

Method)

Input the 23th digit by pressing the On Timer

button.

example) 021E311422852A311439421F

Result)


Step 25

Method)


Cancel button.

example) 021E311422852A311439421F

Result)

If F is displayed, go to the step 26.

Step 26

Method)

Turn the remote controller toward the indoor

unit and press the Power button, and if the

"Ting" or "Tiriring" sounds, the input of option

is completed.

If error displays, solve the problem with

reference to the right side.

Error







Replace the PCB.
















Troubleshooting


Step 27

Method)

If the steps 1 to 26 are completed, remove

the battery and insert it again to return to

the original display of remote controller.

(Operation mode/SET TEMP. /fan speed

displays.)

If error displays, solve the problem with

reference to the right side.

Error







Replace the PCB.














rear side

If you are going to use up to SEG 24, please refer to following instruction.SEG 17 : 0 1 : Using high ceiling kit for 4way.

SEG 18 :

Not in use Use

Change temperature display 0(Celsius) 1(Fahrenheit)Sound Mute 0 2

Mixed operation control 0 4

If you want to use multiple functions, add each of the use value of the function you want to used and input the final addition as option value.

(Use Fahrenheit + Sound mute + Mixed operation control : 1 + 2 + 4 = 7)

Ex) 044217-1d00e6-200000-300000When using Sound mute : 044217-1d00e6-200002-300000

When using high ceiling kit for 4way and mixed operation error preventing function : 044217-1d00e6-200014-300000



Troubleshooting

4-3-3 Option code for each model

Model SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12

Remocon display

NS100SSXEA 0 1 1 0 4 4 1 5 6 2 9 9

NS090SDXEA 0 1 1 0 4 4 1 5 6 2 9 9

NS090SSXEA 0 1 1 0 4 4 1 5 6 2 9 3

NS090SSXEX 0 1 1 0 4 4 1 5 6 2 9 3

NS125SDXEA 0 1 1 0 4 4 1 5 7 0 F 8

NS140SDXEA 0 1 1 0 4 4 1 6 7 2 0 8

Model SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24

Remocon display

NS100SSXEA 2 7 5 A 6 4 3 5 0 0 0 0

NS090SDXEA 2 7 5 A 6 4 3 5 0 0 0 0

NS090SSXEA 2 7 5 A 6 4 3 7 0 0 0 0

NS090SSXEX 2 7 5 A 6 4 3 7 0 0 1 0

NS100SDXEA 2 7 6 4 7 0 3 7 0 0 0 0

NS125SDXEA 2 7 7 D 8 C 3 7 0 0 0 0

NS140SDXEA 2 7 8 C A 0 3 7 0 0 0 0



4-4 Iterms to be checked first

1. The input voltage should be rating voltage 10% range. The air conditioner may not operate properly if the voltage is out of this range.

2. Is the link cable linking the indoor unit and the outdoor unit linked properly? The indoor unit and the outdoor unit shall be linked by 4 cables. Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables. Otherwise the air conditioner may not operate properly.

3. When a problem occurs due to the contents illustrated in the table below it is a symptom not related to the malfunction of the air conditioner.

No Operation of air conditioner Explanation

1 In a COOL operation mode, the compressor does notoperate at a room temperature higher than the setting temperature that the INDOOR FAN should operate.[In case of heat pump model]In a HEAT operation mode, the compressor does notoperate at a room temperature lower than the setting temperature that indoor fan should operate.

In happens after a delay of 3 minutes when the compressor is reoperated. The same phenomenon occurs when a power is on.As a phenomenon that the compressor is reoperated after a delay of 3 minutes, the indoor fan is adjusted automatically with reference to a temperature of the air blew.

2 Compressor stops operation intermittently in DRY( ) mode.

Compressor operation is controlled automaticallyin DRY mode depending on the room temperature and humidity.

3 [In case of heat pump model] Compressor of the outdoor unit is operating although it is turned off in a HEAT mode.

When the unit is turned off while de-ice is activated, the compressor continues operation for up to 12 minutes(maximum) until the deice is completed.

4 [In case of heat pump model]The compressor and indoor fan stop intermittently in HEAT mode.

The compressor and indoor fan stop intermittently if room temperature exceeds a setting temperature in order to protect the compressor from overheated air in a HEAT mode.

5 [In case of heat pump model]Indoor fan and outdoor fan stop operation intermittently in a HEAT mode.

The compressor operates in a reverse cycle to remove exterior ice in a HEAT mode, and indoor fan and outdoor fan do not operate intermittently for within 20% of the total heater operation.



4-5 Fault Diagnosis by Symptom

4-5-1 No Power(completely dead) - Initial diagnosis

1. Checklist : 1) Is Power source voltage normal?

2) Is AC power linked correctly? ( miss-wiring, wire detaching etc. )

3) Is any LED on the MAIN PCB of Outdoor unit lit?

4) Is terminal voltage for indoor unit normal? (230Vac nominal)

5) Is Wired remote controller installed correctly?

2. Troubleshooting procedure

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

Check outdoor unit terminal block voltage on each N-R,N-S,N-T

(230Vac nominal)

Check outdoor unit terminal block voltage on L-N for indoor unit

(230Vac nominal)

Check indoor unit terminal block voltage on L-N

(230Vac nominal)

Check indoor unit terminal block voltage on V1-V2

(12Vdc nominal)

Press the On/Off button on the wired remote controller to operate the

air conditioner

Check DC power voltage of remote controller(V1,V2)

Check DIP SW in the wired remote controller

Is there any error display on the wired remote controller

Turn off the breaker and turn it on after 30 seconds

Check AC power source. Reconnect wires correctly.

Check Inner wiring of outdoor unit.

Check cable and connection of wire between indoor and outdoor unit.

Check Indoor control PCB, Transformer, and FUSE on PCB and replace one which is broken.

Check cable and connection of wire between remote controller and indoor unit.

Replace wired remote controller.

Set DIP SW correctly.

Check each item according to error code list.

Check the setting temperature

No

No

No

No

No

No

No

No



Troubleshooting

4-5-2 The Outdoor unit Power Supply error

1. Checklist : 1) Are the input power voltage and power connection correct?

2) Is there any Fuse Short of the indoor or outdoor unit?

3) Is any LED lit on both MAIN PCB and INVERTER PCB?

4) Are Reactor wires of the outdoor unit connected correctly?


Yes

Yes

No

No

No

Yes

Yes

No

Yes

Yes

No

Yes

Check LEDs on both MAIN PCB and INVERTER PCB after1 minutesfrom

power onIs voltage on N-T of terminal

block over 300V?

Are wire and socket connected correctly? Power line N and

T wire(Terminal block - reactor - EMI PCB), CN9(EMI PCB),

CN80(MAIN PCB)

Is there miss connection of power andcommunication wire betweenindoor and outdoor?

Is there any power wire detachingespecially

phase R and S?

Are wire and socket connected correctly? CN31(MAIN PCB),

CN10(INVERTER PCB)

Is the FUSE on INVERTER PCB blown?

Is R100 on INVERTER PCB open?(200ohm moninal)

Check INVERTER PCB

Are wire and socket connected correctly? CN05,06,07 TAB

terminal(EMI PCB),CN20(INVERTER PCB)

Check and correct the power cable wiring

Check and correct the wire or socket connection

Check Fuses listed blow FUSE3(EMI PCB), FUSE(MAIN PCB)

Correct the cable wiringbetween indoor and outdoor

Check F1,F2 communication line wiring. CN50(MAIN PCB)

Check and correct the power cable wiring

Check Fuses listed blow FUSE1(EMI PCB), FUSE2(EMI PCB)

Check and correct the wiring

Replace the FUSE

Replace INVERTER PCB

Also check each BLDC FAN motoshort or not, by resistance betweenpin #1 and #3

Check and correct the wiring

Check the M/C

No

Yes

No

No

MAIN PCB INVERTER PCB

ALL OFF ALL OFF

Error 202 display(Table No. 14)

Normal


ALL OFF


ALL OFF







Troubleshooting

4-5-3 The Outdoor unit Fan error

1. Checklist : 1) Are the input power voltage and power connection correct?

2) Is the motor wire connected to the outdoor PCB correctly?

3) Is there no obstacle at the surrounding of motor and propeller?

4) Does the driver in the motor case broken?


Yes

Yes

Yes

Yes

Yes

Yes

No

Yes

Is the connection of FAN housing certainly toPCB socket?(CN40, CN41)

Take off each Fan motor housing after 1 minutes from turning off the power

Is each resistance of FAN cable housing pin #1-#3 over 1Mohm, pin #4-#3, #5-#3 and #6-#3 over 1Kohm on

each FAN motor?

Mount each Fan housing to PCB socket and turn on the power

Is the Pin voltage #1 - #3 of CN40 and 41over 250V?

Is the Pin voltage #5 - #3 of CN40 and 41 15V?

Is the Pin voltage #5 - #3 of CN40 and 41within 1-6V during the operation?

Is the Fan in rotation during TEST operation in cooling mode

Is the Pin voltage #6 - #3 of CN40 and 41changed high(4-5V) and low(0-1V) in case ofmaking manual

rotation slowly?

Is the Pin voltage #7 - #3 of CN40 and 41 low(0-1V) in normal rotation?

Check AC power source. Reconnect wires correctly

Exchange the FAN motor because of driver inside of the motor case broken

Follow the check procedure of outdoor unit power supply error check

Exchange INVERTER PCB


Exchange the FAN motor not in rotation


Exchange the FAN motor

Exchange the FAN motor

No

No

No

No

No

No

Yes

No

# TEST operation # press K900 button on the MAIN PCB after power on.- once : cooling mode- twice in a second : heating mode



Troubleshooting

4-5-4 Total current trip error

1. Checklist : 1) Is the input power voltage proper?

2) Is the refrigerant charged properly?

3) Does the compressor rotate normally?(Reverse rotation, Locking etc.)

4) Does the outdoor fan operate normally?(Fan propeller loss, Motor error ect.)

5) Is the installation condition of outdoor unit good?(Piping, Space etc.)

6) Is there no ventilation obstruction at the surrounding of outdoor unit?(Outdoor unit cover, Fan front obstruction etc.)

7) Is there no ventilation obstruction at the surrounding of indoor unit?(Overload condition in heating mode)


Yes

Yes

Yes

Yes

Yes

Is the installation of outdoor unit good?

Is the installation of indoor unit good?

Does the compressor rotate normally?

Are the service valves full opened?

Is AC power voltage normal during thecompressor in operation?

Reinstall and remove the obstruction


Exchange the compressor

Open valve screw to the end

Check AC power source


No

No

No

No

No



Troubleshooting

4-5-5 In case of heating at the cooling mode or cooling at the heating mode


No

No

No

No

Yes

Yes

Yes

Is the Thermo off?

Is the unit in the defrosting operation?

Is the compressorin 3 minutes off?

Is much frostin the indoor heat exchanger?

Does the 4-WAY valve operate normally?

Is the outdoor air sensor and outdoor heat exchanger

attachedcorrectly?

Is the 4-WAY valve connectorconnected

correctly?

Dose thevoltage of AC220V apply to the

connector of 4-WAY valve coil during

the operation?

Change the setting temperature of remote control

Check Inner wiring of outdoor unit.

After 3 minutes, coolingand heating start automatically

Attach the sensor correctly

Connect the connecter correctly

Over shortage of the refrigerant

4-WAY valve coil error

Exchangethe outdoor PCB

Check the resistance value of 4-WAY valve coil

4-WAY valve main body errorGo to the next page

No

Yes

Yes

Yes

Yes

No

No

No

No

Yes



Troubleshooting

4-5-5 In case of heating at the cooling mode or cooling at the heating mode(cont.)

Yes

Yes

Yes

Yes

No

Yes

Yes

No

Does theEEV operatenormally?

Doesthe outdoor fan operate at the operation

of compressor?

Is theoutdoor fan connectedcorrectly?

Is theoutdoor fan connectedcorrectly?

Is much frostin the heat exchanger?

Is much frostin the heat exchanger?

Connect the connector.

Exchangethe out PCB

The over shortage of refrigerant, Insufficient Capacity, Load estimation error

Connect the connector

Outdoor fan error

Check the motor wire

EEV coil error

EEV main body error

Check the resistance value of EEV coil

Check the resistance value of outdoor fan

Outdoor PCB error

No No

No

Yes

No

No

Yes

No

Go to the next page



Troubleshooting

4-5-6 Outdoor temperature sensor error

1. Checklist : 1) Is the sensor connector 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?


Yes

Yes

Yes

Yes

Is the sensor connector connectedcorrectly in accordance with a color?

Is the temperature sensor connectedcorrectly without separation?

Does the both terminal of sensorsatisfy the resistance value in accordance with temperature?

(Refer to the R/T TABLE)

Is the resistance valueof sensor connection pull_up 18K?

Reconnect the sensor connector

Change the position of sensor

Exchange the sensor

Exchange the PCB

Exchange the PCB Normal operation

Exit

No

No

No

No

No

-50

-41

-32

-23

-14 -5 4 13 22 31 40 49 58 67 76 85 94 103

400.0

350.0

300.0

250.0

200.0

150.0

100.0

50.0

0.0



Troubleshooting

4-5-7 Discharge temperature sensor error






Yes

Yes

Yes

Yes





Is the resistance valueof sensor connection pull_up 24K?



Exchange the sensor

Exchange the PCB


Exit

No

No

No

No

No

0 8 16 24 32 40 48 56 64 72 80 88 96 104

112

120

128

136

144

152

160

600.0

500.0

400.0

300.0

200.0

100.0

0.0



Troubleshooting

4-5-8 Coil temperature sensor error






Yes

Yes

Yes

Yes





Is the resistance valueof sensor connection pull_up 18.2K?



Exchange the sensor

Exchange the PCB


Exit

No

No

No

No

No

-50

-41

-32

-23

-14 -5 4 13 22 31 40 49 58 67 76 85 94 103

400.0

350.0

300.0

250.0

200.0

150.0

100.0

50.0

0.0


Samsung Electronics4-27

Troubleshooting

4-5-9 Fan error

1. Checklist : 1) Isnt the fan locked?





Yes

Yes

Yes

Isn't the Fan locked?

Is the connector connected correctly?

Is the color of Fan wire matched correctly?

Remove the Fan lock

Connect the connector

Exchange the Fan


Exit

No

No

No



Troubleshooting

4-5-10 DC-Link voltage sensor error

1. Checklist : 1) Is the connection of R, S, T power wire normal?

2) Are Relay RY21 and R200 on the INVERTER PCB mounted normally?


Yes

Are connection of the wire from INVERTER PBA toEMI PBA normal?


Check and correct the wire connectionNo



Troubleshooting

4-5-11 O.C.(Over Cirrent) error

1. Checklist : 1) Is the refrigerant charged properly?

2) Does the compressor rotate normally?(Reverse rotation, Locking etc.)

3) Is connection of compressor wire normal?

4) Is compressor motor normal?(Insulation, Coil resistance etc.)

5) Does a temporary cycle overload condition happened?


Yes

Yes

Yes

Yes

Yes

Yes

No

Is the installation of outdoor unit good?

Is the installation of indoor unit good?

Are the service valves full opened?

Does the compressor wire connected to the compressor normally?

Is insuration resistance between each compressor terminal and body normal?

Does the compressor rotate normally?

Did AC power voltage interruption happen during the compressor in operation?



Open valve screw to the end

Correct the compressor wire connection



Check AC power source


No

No

No

No

No

No

Yes



Troubleshooting

4-5-12 Communication error

1. Checklist : 1) Is the communication cable between the indoor unit and outdoor unit connected correctly?

2) Isnt the power cable and communication cable wiring error?


Yes

Yes

Yes

Yes

Restart after power off

Is the communication erroroccurred again?

Isn't the power cable andcommunication cable wiring error?

Is the connection of communication cable normal?

Is insuration resistance between each compressor terminal and body normal?

Exchange the outdoor unit PCB

Terminate the service

Correct the wrong wiring

Correct the compressor wire connection

Correct the connection of communication cable

No

No

No

No



Troubleshooting

4-5-13 Compressor start error

1. Checklist : 1) Is the connection of cable for the compressor and power?

2) Is the interphase resistance of compressor normal?


Yes

Yes

Yes

Yes


Is the restart error occurred again?

Is the interphase resistance value of compressor(u v, v w, w u) normal?

Is the compressor body and interphase resistance insulated?

Is the connection cable for thecompressor and power terminal normal?

Exchange the PCB




Correct the cable connection

No

No

No

No



Troubleshooting

4-5-14 Compressor lock error

1. Checklist : 1) Is the connection of cable for the compressor and power?

2) Is the interphase resistance of compressor normal?


Yes

Yes

Yes

Yes


Is the lock error occurred again?

Is the interphase resistance value ofcompressor(u v, v w, w u) normal?

Is the compressor body and interphase resistance insulated?

Is the connection cable for the compressor and power terminal normal?

Exchange the outdoor unit PCB




Correct the cable connection

No

No

No

No



Troubleshooting

4-5-15 DC Link Over voltage/Low voltage error

1. Checklist : 1) Is the power voltage normal?(Lightning, Power interruption etc.)

2) Is AC Power cable connection normal?(Detaching the wire)


Yes

Yes

No

Yes

No

Is the AC Power cable connection to the outdoor unit terminal block good?

Is the connection of reactor terminal good?

Are the FUSEs on EMI PCB blown?

Push the center bar of M/C and mesure the resis-tance of each contact

Is each contact resistance normal? (less than 0.1ohm)

Does the error reappear frequently

The cause of this error may be power source trouble as like power interruption.Check the power source

Check and reconnecting the reactor wireat the TAB terminal

Check and reconnecting the AC power cable wire

Replace the blown FUSE

Exchange M/C


No

No

Yes

No

Yes



4-6 PCB Inspection Method

4-6-1 Pre-inspection Notices

4-6-2 Inspection Procedure

4-6-3 Indoor Detailed Inspection Procedure

1. Turn off the breaker, AC power source, before disassembling the unit because of electrical hazard. 2. Confirm the complete discharge of capacitor C102, C702, C703, C704, C705, C706, C707 on the INVERTER PCB when you touch the PCB. Especially dischargeing speed of C702-C707 is very slow because of little load in stand-by condition. To confirm the voltae of 702-C707, measure the DC link voltage at the IGBT module pins near C701 at which applying voltage (450-510Vdc) is marked. To confirm discharging of C102, measure the voltage of non mounted C103 solder hole or check if all LEDs are off. 3. Dont touch the metal body of electrolytic capacitor for avoiding electrical shock before confirming discharge. 4. To discharging the capacitor use power resistor of about 1 Kohm 10W. Soldering tool(non electronic temperature control type) can be used as a discharging resistor. 5. Dont pull the lead wire but hold the whole housing to disconnect or connect a housing from or to the PCB.

1. Check the connection of each housing to the connector first and the peeling of PCB copper pattern. 2. The PCB is composed of the 3 part in the indoor unit.

INDOOR Main PCB part : Indoor unit control, MICOM and surrounding circuit, relay, fan motor driving circuit, sensor reading circuit, buzzer driving circuit and DC power supplying circuit.

Display PCB part : LED lamps, Switch,Remocon module. INDOOR EMI PCB part : Line filter, Noise Capacitor and Varistor 3. The PCB is composed of the 3 part in the outdoor unit.

EMI PCB part : Line filter for electrical noise, Varistors for surge and Fuses. MAIN PCB part : Refrigeration cycle controller with MICOM INVERTER PCB part : Compressor driving inverter and BLDC fan controller

No Procedure Inspection Method Cause

1

Open the electronic component box and check the PCB fuse

Turn off the power1) Is the Fuse F701 on the EMI PCB blown?2) Is the Fuse F702 on the MAIM PCB blown?

Over currentIndoor fan motor shortPCB AC Part pattern short

2

Check the LEDs for DC power and communication condition

Turn off the power1) Is RED LED blinking? his led means micom is running normally2) Is GREEN LED blinking? This means communication between Indoor and Outdoor unit is on3) Is YELLOW LED blinking? This means communication between Indoor and wired remote controller is on It may take one minute to start communication

Communication ciucuit troubleCommunication wire connection troubleWrong connection for power supply wire of remote controller

3Check the DIP and rotary switch on the PCB

1) Is the setting of each switch proper? Wrong setting of switch

4Check the DC voltage 1) Is the voltage of CN32 pin #1-#2 12V?

2) Is the voltage of C109 V?SMPS on MAIN PBA troubleLoad short

5

FAN operation checkingPress the ON/OFF button.1. FAN Speed[HIGH]2. FAN mode

1) Is the FAN motor running?2) Is the connection of CN73 normal?

Controller trouble inside of the fan motorConnector trouble of CN73



4-6-4 Outdoor Detailed Inspection Procedure

No Procedure Inspection Method Cause

1

Turn OFF the powerand check wire and socket connection on each part

Wait until C702-C707 discharged1) Is connection of housing to socket normal?2) Is connection of each wire to terminal block normal?3) Is the reactor wire connection normal?4) Is there no miss-wiring of each cable?

Installation mistakeMiss assembling

2

FUSE check Is the fuses on each PCB normal? 3 fuese on EMI PCB 1 fuse on MAIN PCB 1 fuse on INVERTER PCB

Wire shortOverloadBLDC FAN short error

3

Turn on the powerand check voltage of terminal block

Is N-R,N-S,N-T around 230Vac?Is R-S,S-T,T-R around 400Vac?Is L-N(to indoor unit) around 230Vac?Is F1-F2 within 5Vdc?

Miss wiring of power cableWire detaching

4

Check LED display on AIN P

1) Is RED LED ON?2) Is GREEN LED Blinking once a second?3) Is LEDs displaying error code pattern?

MAIN PCB power troubleBad communication between indoor and outdoor unitError detection

5

Check LED display on INVERTER PCB

1) Is RED LED ON?2) Is GREEN LED Blinking once a second?3) Is LEDs displaying error code pattern?

INVERTER PCB power troubleNO communication between MAIN and INVERTER PCBError detection

6

Check DC voltage of SMPS output

MAIN PCB1) Is voltage of CN51 pin#1-#2 12-14.5V?2) Is voltage of C108 5V?

INVERTER PCB3) Is voltage of CN51 pin#1-#2 5V?4) Is voltage of C124 12V?5) Is voltage of each ZD100,ZD101,ZD102, ZD103 17-18V?

SMPS circuit trouble

7

Check INVERTER PCB 1) Is resistance of R100 200ohm? To check this, touch one probe to CN10 pin#1(N) and the other to D101 upper side pin of '~' marking pins2) Is DC Link voltage 450-510V? Check IGBT module pins marking voltage near C70

ResisterWire connection between EMI PCB and INVERTER PCB

8Check BLDC fan 1) See 12-2-3 The Outdoor unit Fan error

(Fault Diagnosis)

Troubleshooting



4-7 Main Part Inspection Method

Part Breakdown Inspection MethodIndoor Unit Temperature Sensor Measure sensor resistance with a multimeter

Normal At the normal temperature 37k~8.3k(-7C~+30C)

Abnormal ,0...Open or Short

Indoor Unit BLDC FAN Motor Measure terminal resistance with a multimeter

Normal

At the normal temperature(10C~30C)Wire Pin number Resistance Remark

RED - BLACK 1-3 Over 1M +300V motor powerWHITE - BLACK 4-3 1K ~ 2K +15V control power

YELLOW - BLACK 5-3 200K ~ 300K controlBLUE - BLACK 6-3 10K ~ 50K pulse


Outdoor Unit

Outdoor Temperature Sensor

&

Cond Temperature Senso

Measure terminal resistance with a multimeter

NormalAt the normal temperature 37k~8.3k(-7C~+30C) see 12-2-6 and 12-2-8


Outdoor Unit Discharge

Temperature SensorrMeasure terminal resistance with a multimeter

NormalAt the normal temperature 563k~157k(0C~+30C) see 12-2-7


Outdoor Unit BLDC FAN MOTOR Measure terminal resistance with a multimeter

Normal

At the normal temperature(10C~30C)Wire Pin number Resistance Remark

RED - BLACK 1-3 Over 1M +300V motor powerWHITE - BLACK 4-3 1K ~ 2K +15V control power

YELLOW - BLACK 5-3 200K ~ 300K controlBLUE - BLACK 6-3 10K ~ 50K pulse

ORANGE - BLACK 7-3 10K ~ 50K reverse


Outdoor Unit 4way Valve Solenoid Measure sensor resistance with a multimeter

Normal At the normal temperature(10C~30C) 1.6K15%




5. Exploded Views and Parts List

5-1 Indoor Unit

13

19

2

18

5

3

9

6

15

17

14

1

15-1

15-315-2

15-7

15-6

15-5

15-8

23

2320

22

2124

4

8

12

11

715-4

16

10

26

NS090SDXEA



Exploded Views and Parts List

Parts List

No. SA/SNADescription SpecificationCode No. Q'TY

1 DB90-02402A ASS'Y CABINET FRONT ASS'Y 1 SA

2 DB90-02403A ASS'Y CABINET-TOP ASS'Y 1 SA

3 DB90-02404A ASS'Y COVER-PIPE ASS'Y 1 SA

4 DB90-02405A ASS'Y CABINET-BOTTOM BLOWER ASS'Y 1 SA

5 DB90-02406A ASS'Y CABINET-SIDE RH ASS'Y 1 SA

6 DB90-02407A ASS'Y CABINET-SIDE LF ASS'Y 1 SA

7 DB90-02408A ASS'Y-BRACKET OUTLET PART ASS'Y 1 SNA

8 DB90-02409A ASS'Y CABINET-BOTTOM DRAIN ASS'Y 1 SA

9 DB61-01282A HOLDER-SIDE CABI SGCC-M,T3.0,45.2,65 4 SNA

10 DB61-02374A BRACKET-FILTER SGCC-M,T1.0,50,250 4 SA

11 DB61-02378A HOLDER-PIPE SGCC-M,T1.0 1 SNA

12 DB63-01297A COVER-HOLDER SGCC-M,T0.8 1

Date post:	21-Jul-2016
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Samsung CAC 2011 (Slim Duct) Service Manual

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