Samsung AC030JXADCH/AA, AC042JNHDCH/AA, AC036JNHDCH/AA, AC036JXADCH/AA, AC018JXADCH/AA Service Manual

SYSTEM AIR CONDITIONER

MA DUCT SERIES

INDOOR UNIT OUTDOOR UNIT

Model :

AC018JNHDCH/AA
AC024JNHDCH/AA
AC030JNHDCH/AA
AC036JNHDCH/AA
AC042JNHDCH/AA
AC048JNHDCH/AA

AC018JXADCH/AA
AC024JXADCH/AA
AC030JXADCH/AA
AC036JXADCH/AA
AC042JXADCH/AA
AC048JXADCH/AA

AIR CONDITIONER CONTENTS

AC018JNHDCH/AA
AC024JNHDCH/AA

AC018JXADCH/AA

AC024JXADCH/AA
AC030JXADCH/AA

AC030JNHDCH/AA
AC036JNHDCH/AA
AC042JNHDCH/AA
AC048JNHDCH/AA

AC036JXADCH/AA
AC042JXADCH/AA
AC048JXADCH/AA

1. Precautions

2. Product Speci cations

3. Disassembly and Reassembly

4. Troubleshooting

5. PCB Diagram

6. Wiring Diagram

7. Reference Sheet

Contents

11. Precautions

1-1 Precautions for the Service

1-2 Precautions for the Static Electricity and PL

1-3 Precautions for the Safety

1-4 Others

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12. Product Specifications

2-1 The Feature of Product

2-2 Product Specifications

2-3 Accessory

...........................................................................................................................................

3. Disassembly and Reassembly

3-1 Indoor Unit

3-2 Outdoor Unit

.........................................................................................................................................

.....................................................................................................................................

4. Trouble shooting

4-1 Indoor Display Error and Check Method

4-2 Troubleshooting by symptoms

4-3 Setting Option Setup Method

4-4 Setting an indoor unit address and installation option

4-5 Items to be checked first

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1-1

1-1

1-1

1-1

1-1

2-1

2-1

2-2

2-5

3-1

3-2

3-10

4-1

4-1

4-5

4-13

4-14

4-18

5. PCB Diagram and Parts list

5-1 Indoor Unit

5-2 Outdoor Unit

6. Wiring Diagram

6-1 Indoor Unit

6-2 Outdoor Unit

7. Reference Sheet

7-1 Refrigerating Cycle Diagram

7-2 Index for Model Name

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5-1

5-1

5-4

6-1

6-1

6-3

7-1

7-1

7-2

1. Precautions

1-1 Precautions for the Service

O Use the standard parts when replacing the electric parts.

– Confirm the model name, rated voltage, rated current of the electric parts.

O Repair the disconnection of HARNESS securely when repairing the break down.

– If there is any connection error, it causes an abnormal noise and incorrect operation.

O In case that you assemble or disassemble the products with laying it on the side, do work on the work cloth.

– If not, the exterior of products can be scratched.

O

Remove dust and foreign materials from harness, connection part, and inspection part thoroughly when repairing the break down.

– It protects the danger of fire such as tracking and short.

O Tighten tightly the service valve of outdoor unit and the cap of charging valve with a monkey spanner.
O Check the assembly status of parts after repairing the break down.

– It should be same as the status before repairing.

1-2 Precautions for the Static Electricity and PL

O As the PCB power terminal has a weakness for the static electricity, pay attention to it during the repair and measurement.
– Work with insulation gloves during the repair and measurement of PCB.
O

Check the distance between the product and the other electronic appliances such as TV, video, and audio. It should be over 2m.

– If not, it causes a bad picture quality or a noise.
O Repairing the products by consumer should be strictly prohibited.
– There is a danger of electric shock or fire due to incorrect disassembly.

1-3 Precautions for the Safety

O Do not pull any electric wires and do not touch an auxiliary power switch with a wet hand.
– There is a danger of electric shock or fire.

O In case any wire or power plug has been damaged, replace it to eliminate any possible danger.
O Do not bend the power cord by force and do not put any heavy object on the power cord.

– There is a danger of electric shock or fire.
O Do not use multi socket.
– There is a danger of electric shock or fire.
O Ground the product if necessary.
– Be sure to ground the product if there is any danger of electric leakage due to water or moisture.
O Be sure to turn off the auxiliary power switch or pull out the power plug during replacement or repair of electric parts.
– There is a danger of electric shock.
O In case the product will not be in use for a long time, the battery of remote control should be kept separately.
– Leakage of inside fluid can cause break down of remote control.

1-4 Others

O Never store or load the air conditioner upside down or sideways to prevent the damage to the compressor.
O Young children or infirm persons should be always supervised when they use the air conditioner.
O Max current is measured according to IEC standard for safety.
O Current is measured according to ISO standard for energy efficiency.
O

When installing, make sure there is no leakage. When recovering the refrigerant, ground the compressor first before removing the
connection pipe. If the refrigerant pipe is not properly connected and the compressor works with the service valve open, the pipe
inhales the air and it makes the pressure inside of the refrigerant cycle abnormally high. It may cause explosion and injury.

O Pump Down Procedure (When removing the product)

- Turn on the air conditioner and select Cool mode to run the compressor for 3 minutes.

- Release the valve caps on High and Low pressure side.

- Use L wrench to close the valve on the high pressure side.

- Approximately 2 minutes after, close the valve on the low pressure side.

- Stop operation of the air conditioner.

- Disconnect the pipes.

Samsung Electronics 1-1

2. Product Specifications

2-1 The Feature of Product

■ Built-in Duct 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)

2-1

Samsung Electronics

2-2 Product Specifications

IMAGE

ITEM

Indoor Unit

Outdoor Unit

Remote Controller

AC018JNHDCH
AC018JXADCH

AC024JN4DCH
AC024JXADCH

Power Product 1Φ, 208-230V/60Hz 1Φ, 208-230V/60Hz

Indoor L x H x D mm

Outdoor L x H x D mm

Indoor Product kg(Net) 43.0

Outdoor Product kg(Net) 45.0 64.5

Capacity Cooling/Heating(ISO) Btu/h 18,000/20,000 24,000/27,000

Power input Cooling/Heating (ISO) W

Operation current Cooling/Heating (ISO) A

Noise

(Cooling/Heating)

Connecting Pipe

Additional Refrigerant (R410A) g/m 10 10

Extension length(Elevation) m 20 30

Indoor unit

Outdoor unit

Refrigerant (R410A) g 1300(charged for 7.5m) 2100(charged for 7.5m)

Extension length(Total) m 30 50

Option Code

In case of strongest air

blow

In case of strongest air

blow

Liquid mm 1/4"(6.35) 1/4"(6.35)

Gas mm 1/2"(12.7) 5/8"(15.88)

Standard m 7.5

A40

A

Product Option 01C0EC-1C8424-27343B-370005

Installation Option 020000-120000-200000-300000 020000-120000-200000-300000

1150*320*480 1150*320*480

880*638*310 940*998*330

1,605/1,725 1,985/2,350

7.4/8.0 9.2/10.8

58 60

01C0EC-1C747C-274750-370005

43.0

44

7.5

Samsung Electronics

2-2

ITEM

Indoor Unit

AC030JNHDCH
AC030JXADCH

AC036JNHDCH
AC036JXADCH

IMAGE

Power Product 1Φ, 208-230V/60Hz 1Φ, 208-230V/60Hz

Indoor L x H x D mm

Outdoor L x H x D mm

Indoor Product kg(Net) 58.0

Outdoor Product kg(Net) 70.0 88.0

Capacity Cooling/Heating(ISO) Btu/h 30,000/32,000 36,000/40,000

Power input Cooling/Heating (ISO) W

Operation current Cooling/Heating (ISO) A

Noise

(Cooling/Heating)

Indoor unit

Outdoor unit

Refrigerant (R410A) g 2600(charged for 7.5m) 2800(charged for 7.5m)

Connecting Pipe

Additional Refrigerant (R410A) g/m 22 33

Standard m 7.5

Extension length(Total) m 50 75

Extension length(Elevation) m 30 30

Option Code

Outdoor Unit

Remote Controller

1200*360*650 1200*360*650

940*998*330 940*1210*330

2,700/2,660 3,000/3,300

12.0/12.0 13.3/14.3

In case of strongest air

blow

In case of strongest air

blow

Liquid mm 3/8"(9.52) 3/8"(9.52)

Gas mm 5/8"(15.88) 5/8"(15.88)

A44

A

Product Option 0100EC-1A55D4-275A64-370005

Installation Option 020000-120000-200000-300000 020000-120000-200000-300000

60 60

0100EC-1A5902-276470-370005

58.0

46

7.5

Samsung Electronics2-3

ITEM

Indoor Unit

AC042JNHDCH
AC042JXADCH

AC048JNHDCH
AC048JXADCH

IMAGE

Power Product 1Φ, 208-230V/60Hz 1Φ, 208-230V/60Hz

Indoor L x H x D mm

Outdoor L x H x D mm

Indoor Product kg(Net)

Outdoor Product kg(Net) 88.0 88.0

Capacity Cooling/Heating(ISO) Btu/h 42,000/47,000 48,000/53,000

Power input Cooling/Heating (ISO) W

Operation current Cooling/Heating (ISO) A

Noise

(Cooling/Heating)

Indoor unit

Outdoor unit

Refrigerant (R410A) g 2800(charged for 7.5m) 2800(charged for 7.5m)

Connecting Pipe

Additional Refrigerant (R410A) g/m 33 33

Standard m

Extension length(Total) m 75 75

Extension length(Elevation) m 30 30

Option Code

Outdoor Unit

Remote Controller

1200*360*650 1200*360*650

940*1210*330 940*1210*330

58.0 58.0

4,000/3,980 4,950/5,050

16.4/17.3 21.5/20.0

In case of strongest air

blow

In case of strongest air

blow

Liquid mm 3/8"(9.52) 3/8"(9.52)

Gas mm 5/8"(15.88) 5/8"(15.88)

A

A

Product Option

Installation Option 020000-120000-200000-300000 020000-120000-200000-300000

0100EC-1A194D-277D8C-370005 0100EC-1A1A81-278CA0-370005

48 50

62 62

7.5 7.5

Samsung Electronics 2-32-4

2-3 Accessory

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Installation&Owner's Manual

Insulation

DB68-05395A

DB62-04318S

1

1

Insu DRAIN HOSE DB62-11028A 1/1/1

INSU HOSE D

INSU TUBE OUT

DB62-11028E

DB62-11028F

1/1

1/1

Essential Offer

ASSY DRAIN HOSE JOINT

Ass'y Drain Hose Joint

DB67-01191A

DB90-06701A

1

1

(Indoor Unit)

GROMMET-HANGER

FILTER-PRE

FILTER-PRE

DB63-00237A

DB63-01299B

DB63-01299A

Cap Drain DB63-10355C 3

Drain Plug DB67-00806A 1

Rubber Leg DB73-20134A 4

8

1

1

Essential Offer
(Outdoor Unit)

2-4 Samsung Electronics

2-5

3. Disassembly and Reassembly

■ Necessary Tools

Item Remarks

+SCREW DRIVER

Adjustable Wrench

(8mm, 10mm, 13mm)

M6, M8 Hex Wrench

󲄄 Disassembleshouldbeworkedinpairs.

Samsung Electronics 3-1

3-1 Indoor unit

■AC018JNHDCH / AC024JNHDCH

No Parts Procedure Remark

1 Assy fan parts 1)Disassemble the Cabinet-blower

-Unscrew 19 screws

2)Disassemble the Partition-front from Partition

- Unscrew 8 screws

3)Rotate the assy fan parts in CCW direction.

4)Pull out the assy fan parts after hang at the
edge of cabinet

3-2 Samsung Electronics

No Parts Procedure Remark

2 Drain Pan 1)Disassemble the cabinet-drain

-Unscrew 7 screws

2)Disassemble the Drain pan

- Unscrew 4 screws.

3 Drain pump 1)Disassemble the drain pump kit from the set.

- Unscrew 2 screws

2)Disassemble the drian pump case.

- Unscrew 4 screws.

Samsung Electronics 3-3

No Parts Procedure Remark

3 Drain pump 3)Disassemble the drian pump.

- Unscrew 2 screws and cabel tie.

4 Evaporator 1)Disassemble the Cover-pipe

-Unscrew 5 screws

2)Disassemble the Evaporator

-Unscrew 4 screws

3-4 Samsung Electronics

No Parts Procedure Remark

5 Main PBA 1)Disassemble the Case Control

-Unscrew 3 screws

2)Disassemble the Evaporator

-Unscrew 4 screws

Samsung Electronics 3-5

■AC030JNHDCH / AC036JNHDCH / AC042JNHDCH / AC048JNHDCH

No Parts Procedure Remark

1 Drain Pan 1)Disassemble the cabinet-blower

-Unscrew 17 screws

2)Disassemble the cabinet-drain

-Unscrew 9 screws

3)Disassemble the drain pan

-Unscrew 4 screws

2 Assy fan parts 1)Disassemle the case blower from partition.

- Unscrew 10 bolts by using wrench and driver.

3-6 Samsung Electronics

No Parts Procedure Remark

2 Assy fan parts 2)Ratate the Assy fan parts in CCW direction

3)Pull out the Assy fan parts after hang at the
edge of cabinet

3 Drain pump 1)Disassemble the drain pump kit from the set.

- Unscrew 2 screws

2)Disassemble the drian pump case.

- Unscrew 4 screws.

Samsung Electronics 3-7

No Parts Procedure Remark

3 Drain pump 3)Disassemble the drian pump.

- Unscrew 2 screws and cabel tie.

4 Evaporator 1)Disassemble the Evaporator

- Unscrew 4 screws

3-8 Samsung Electronics

No Parts Procedure Remark

5 Main PBA 1)Disassemble the Case Control

-Unscrew 3 screws

2)Detach all connect cable

3)Disassemble the PBA

-Unscrew 1 screw

Samsung Electronics 3-9

3-2 Outdoor Unit

QAC018JXADCH

No Parts Procedure Remark

1common work 1) loosen 1 pcs screw of cover control,and

detach it.

2) loosen 5 pcs screws on both right and
left cabniet side edges and to detach the
cover-top

3) Loosen 7 screwsfixed to disassemble
cabi-front , and detach it.

3-10 Samsung Electronics

No Parts Procedure Remark

common work 4) loosen 7 screws to disassemble the cabi-

right ,and detach it.

5) loosen 2 screws to disassemble steel-bar.

6) loosen 3 screws to disassemble cabi-left.

Samsung Electronics 3-11

No Parts Procedure Remark

2 fan&motor 1) loosen 1 screw as indication and detached

the fan.

2) loosen 4 pcs motor screws and disconnect
the wire betwwen assy control out and motor.

3) loosen 2 pcs bracket-motor screw and
detach it.

3-12 Samsung Electronics

No Parts Procedure Remark

3 assy control out 1) lossen fixing 1 screw from cover -control

2) detach several connections from assy con-

trol out, take out assy control out.

4 Heat exchanger 1) Release the refrigerant at first

2) Looosen fixing screw on both side.

3) disaessembly the pipes in both inlet and

outlet with welding torch.

4) detach the heat exchanger.

Samsung Electronics 3-13