Samsung AHU Series User manual

AHU SERIES CONTENTS
SYSTEM AIR CONDITIONER
AHU SERIES
1. Precautions
2. Product Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram and Part List
6. Wiring Diagram
7. Reference Sheet
INDOOR UNIT OUTDOOR UNIT
Model : AC018KNZDCH/AA
AC024KNZDCH/AA
AC030KNZDCH/AA
AC036KNZDCH/AA
AC042KNZDCH/AA
AC048KNZDCH/AA
AC054KNZDCH/AA
AC018JXADCH/AA
AC024JXADCH/AA
AC030JXADCH/AA
AC036JXADCH/AA
AC042JXADCH/AA
AC048JXADCH/AA
AC054KXADCH/AA
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Section 0
Samsung Electronics 1
Contents
1. Precautions........................................................................................................ 1-1
1-1 Precautions for the Service.............................................................................................................................. 1-1
1-2 Precautions for the Static Electricity and PL............................................................................................. 1-1
1-3 Precautions for the Safety................................................................................................................................ 1-1
1-4 Other ........................................................................................................................................................................ 1-2
2. Product Specifications...................................................................................... 2-1
2-1 The Feature of Product ..................................................................................................................................... 2-1
2-2 Product Specifications ...................................................................................................................................... 2-2
2-3 Specifications of optional items.................................................................................................................... 2-4
2-3-1 Accessories................................................................................................................................................. 2-4
3. Disassembly and Reassembly.......................................................................... 3-1
3-1 Indoor unit ..................................................................................................................................................... 3-2
3-2 Outdoor Unit................................................................................................................................................. 3-7
4. Troubleshooting ............................................................................................... 4-1
4-1 Indoor Display Error and Check Method................................................................................................... 4-1
4-1-1 Indoor unit LED lamp display at error detecting........................................................................ 4-1
4-1-2 Wired Remocon Error Display............................................................................................................ 4-2
4-2 Troubleshooting by symptoms..................................................................................................................... 4-4
4-2-1 Indoor temperature sensor (open/short)...................................................................................... 4-4
4-2-2 Eva in and out sensor (open/short).................................................................................................. 4-5
4-2-3 Fan error...................................................................................................................................................... 4-13
4-2-4 Terminal Block's Terminal Fuse(Open)........................................................................................... 4-14
4-2-5 Outdoor's service valve(Clog)
4-2-6 EEPROM error
4-2-7 Option error
4-3 Setting the indoor unit option code ........................................................................................................... 4-12
4-3-1 Setting an indoor unit address and installation option .......................................................... 4-12
4-4 Items to be checked first.................................................................................................................................. 4-23
5. PCB Diagram and Parts List.............................................................................. 5-1
5-1 Indoor Unit............................................................................................................................................................. 5-1
5-1-1 MAIN PCB Diagram................................................................................................................................. 5-1
5-2 Outdoor Unit......................................................................................................................................................... 5-3
5-2-1 MAIN PCB.................................................................................................................................................... 5-3
5-2-2 SUB PCB....................................................................................................................................................... 5-5
5-2-3 MAIN PCB.................................................................................................................................................... 5-6
5-2-4 INVERTER PCB ........................................................................................................................................... 5-7
5-2-5 EMI PCB........................................................................................................................................................ 5-9
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2Samsung Electronics
Contents
6. Wiring Diagram................................................................................................. 6-1
6-1 Indoor Unit............................................................................................................................................................. 6-1
6-2 Outdoor Unit......................................................................................................................................................... 6-3
7. Reference Sheet ................................................................................................ 7-1
7-1 Refrigerating Cycle Diagram .......................................................................................................................... 7-1
7-2 Index of Model Name........................................................................................................................................ 7-2
7-2-1 Indoor Unit................................................................................................................................................. 7-2
7-2-2 Outdoor Unit............................................................................................................................................. 7-3
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Samsung Electronics 1-1
1-1 Precautions for the Service
ƒUse the standard parts when replacing the electric parts.
– Confirm the model name, rated voltage, rated current of the electric parts.
ƒRepair the disconnection of HARNESS securely when repairing the break down.
– If there is any connection error, it causes an abnormal noise and incorrect operation.
ƒIn 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.
ƒRemove 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.
ƒTighten tightly the service valve of outdoor unit and the cap of charging valve with a monkey spanner.
ƒCheck 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
ƒAs 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.
ƒCheck 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.
ƒRepairing 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
ƒDo 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.
ƒIn case any wire or power plug has been damaged, replace it to eliminate any possible danger.
ƒDo 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.
ƒDo not use multi socket.
– There is a danger of electric shock or fire.
ƒGround the product if necessary.
– Be sure to ground the product if there is any danger of electric leakage due to water or moisture.
ƒBe 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.
ƒIn 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. Precautions
1-1 Precautions for the Service
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Precautions
1-2 Samsung Electronics
1-4 Others
ƒNever store or load the air conditioner upside down or sideways to prevent the damage to the compressor.
ƒ Young children or infirm persons should be always supervised when they use the air conditioner.
ƒMax current is measured according to IEC standard for safety.
ƒCurrent is measured according to ISO standard for energy efficiency.
ƒ 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.
ƒPump 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.
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Samsung Electronics 2-1
2. Product Specifications
2-1 The Feature of Product
ŶBuilt-in Duct Type
After installed, the air conditioner can be harmonized with a room interior.
ŶHigh 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.
ŶLong Piping (Length & Height)
It can give the benefit to the installers and aries the reliability of the air conditioner.
ŶLong Ambient Operation (In Low Temperature)
It can arise the reliability and the capacity of the air conditioner, especially operated in low temperature.
ŶEco-friendly Product (Lead-Free, RoHS, WEEE)
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2-2 Samsung Electronics
Product Specifications
Samsung Electronics 2-3
2-2 Product Specifications
ITEM AC018KNZDCH/AA
AC018JXADCH/AA
AC024KNZDCH/AA
AC024JXADCH/AA
AC030KNZDCH/AA
AC030JXADCH/AA
AC036KNZDCH/AA
AC036JXADCH/AA
AC042KNZDCH/AA
AC042JXADCH/AA
AC048KNZDCH/AA
AC048JXADCH/AA
AC054KNZDCH/AA
AC054KXADCH/AA
IMAGE
Indoor Unit
Outdoor Unit
Power Supply 1Φ, 208-230V, 60Hz 1Φ, 208-230V, 60Hz 1Φ, 208-230V, 60Hz 1Φ, 208-230V, 60Hz 1Φ, 208-230V, 60Hz 1Φ, 208-230V, 60Hz 1Φ, 208-230V, 60Hz
Performance Cooling/Heating Btu/h 18,000 / 20,000 24,000 / 27,000 30,000 / 32,000 36,000 / 40,000 42,000 / 47,000 48,000 / 53,000 54,000 / 60,000
Power Consumption Cooling/Heating kW 1.60 / 2.00 2.18 / 2.64 2.95 / 2.82 3.16 / 3.62 4.14 / 4.22 5.00 / 4.95 6.72 / 5.80
EER/COP Cooling/Heating Btu/hW 11.25 / 10 11.01 / 10.23 10.17 / 11.35 11.39 / 11.05 10.14 / 11.14 9.6 / 10.71 8.04 / 10.34
Energy Grade
Energy Grade (C) SEER 20.1 SEER 19.5 SEER 19.6 SEER 19.0 SEER 18.4 SEER 18.0 SEER 17.1
Energy Grade (H) HSPF 10.5 HSPF 11.5 HSPF 10.4 HSPF 10.2 HSPF 9.6 HSPF 9.7 HSPF 9.0
Operation Current Cooling/Heating A 7.1 / 8.7 9.8 / 11.6 13.0 / 12.3 14.1 / 15.8 18.0 / 18.3 21.3 / 21.6 28.7 / 24.7
Noise
(Cooling / Heating)
Indoor Unit
dBA 38 / 38 41 / 41 41 / 41 42 / 42 42 / 42 43 / 43 45 / 45
Outdoor Unit dBA 48 / 48 50 / 50 50 / 52 49 / 51 51 / 53 53 / 55 56 / 56
Size
Net Dimension
(WxHxD)
Indoor Unit
mm 445 x 1,092 x 533 445 x 1,092 x 533 533 x 1,219 x 533 533 x 1,219 x 533 622 x 1,492 x 552 622 x 1,492 x 552 622 x 1,492 x 552
Outdoor Unit mm 880 x 638 x 310 940 x 998 x 330 940 x 998 x 330 940 x 1,210 x 330 940 x 1,210 x 330 940 x 1,210 x 330 940 x 1420 x 330
Shipping
Dimension
(WxHxD)
Indoor Unit mm 493 x 1,135 x 665 493 x 1,135 x 665 590 x 1,305 x 665 590 x 1,305 x 665 676 x 1,588 x 695 676 x 1,588 x 695 676 x 1,588 x 695
Outdoor Unit mm 1,023 x 730 x 413 995 x 1,096 x 426 995 x 1,096 x 426 995 x 1,388 x 426 995 x 1,388 x 426 995 x 1,388 x 426 995 x 1598 x 426
Weight
Net Indoor Unit
kg 44.5 44.5 56.0 56.0 74.0 74.0 74.0
Outdoor Unit kg 45.0 64.5 70.0 88.0 88.0 88.0 96.0
Shipping Indoor Unit
kg 49.0 49.0 62.0 62.0 80.0 80.0 80.0
Outdoor Unit kg 48.0 69.5 74.0 98.0 98.0 98.0 106.0
Connecting Pipe Liquid
mm 6.35 (1/4") 6.35 (1/4") 9.52 (3/8") 9.52 (3/8") 9.52 (3/8") 9.52 (3/8") 9.52 (3/8")
Gas mm 12.7 (1/2") 15.88 (5/8") 15.88 (5/8") 15.88 (5/8") 15.88 (5/8") 15.88 (5/8") 19.05 (3/4")
Refrigerant (R410A) g 1300 2100 2600 2800 2800 2800 3500
Additional Refrigerant (R410A) g/m 10 10 22 33 33 33 33
Standard m 7.5 7.5 7.5 7.5 7.5 7.5 7.5
Extension Length (Maximum) m 30 50 50 75 75 75 75
Extension Length (Elevation) m 20 30 30 30 30 30 30
Option Code
Product Option 01E06C-105020-
27343B-370005
01E06C-105020-274750-
370005
01E06C-105020-
275A64-370005
01E06C-105020-276470-
370005
01E06C-105020-
277D8C-370005
01E06C-105020-
278CA0-370005
01E06C-105020-
27A0B4-370005
Installation Option 020000-100000-200000-
300000
020000-100000-200000-
300000
020000-100000-200000-
300000
020000-100000-200000-
300000
020000-100000-200000-
300000
020000-100000-200000-
300000
020000-100000-200000-
300000
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2-4 Samsung Electronics
Item Description Code No. Q’ty Remark
2:1(56,16758&7,216
0$18$/'(,16758&&,21(6
,6758=,21,3(5/862
0$18$/'(,16758ÄÌ(6
0$18(/'87,/,6$7,21
*(%5$8&+6$1:(,681*
6SOXWW\SH5RRP$LU&RQGLWLRQHU
$LUHDFRQGLFLRQDGRGRPVWLFRVLVWHPD6SOLW
&RQGL]LRQDWRUHGDULDSHUDPELHQWLDGXQLWØ6HSDUDWH
$SDUHOKRGHDUFRQGLFLRQDGRWLSR6SOLW
&OLPDWLVHXUGHW\SHVSDU
*HWHLOWHUDXPNOLPDDQODJH
Installation manual - 1
Essential Offer
(Indoor Unit)
Card Warranty - 1
Cap Drain DB63-10355C 3
Essential Offer
(Outdoor Unit)
Drain Plug DB67-00806A 1
Rubber Leg DB73-20134A 4
Manual Install DB68-05462A 1
2-3 Specifications of optional items
2-3-1 Accessories
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Samsung Electronics 3-1
Item Remarks
+SCREW DRIVER
Adjustable Wrench
(8mm, 10mm, 13mm)
M6, M8 Hex Wrench
QNecessary Tools
3. Disassembly and Reassembly
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3-2 Samsung Electronics
No Parts Procedure Remark
1 FRONT VIEW 1) Stop the operation of the air conditioner
and disconnect the main power supply.
2 Control-BOX 1) Loosen 11 of the front screw(CCW) and
detach the Cabinet Front Up.
2) Disconnect the Connector Wire that is
connected to the indoor unit's PBA
3) Unscrew the 1 fixed screws on middle of
the PBA and 4 fixed PBA HOLDER, and
disassemble the PBA from the indoor
unit.
(Use + Screw Driver)
3-1 Indoor Unit
QV-AHU
- AC018/024/030/036/042/048/054KNZDCH/AA
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Disassembly and Reassembly
Samsung Electronics 3-3
No Parts Procedure Remark
3 DRAIN PAN 1) Loosen 11 of the front screw(CCW) and
detach the Cabinet Front Down.
2) Loosen 2 of the Left side screw(CCW).
3) Loosen 5 of the front screw(CCW) and
detach the 2 Bracket drain and 1 Bracket
Low
4) Pull the Heat Exchanger and Drain.
5) Detach the Drain from indoor Unit.
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Disassembly and Reassembly
3-4 Samsung Electronics
No Parts Procedure Remark
4 Heat Exchanger 1) Loosen 11 of the front screw(CCW) and
detach the Cabinet Front Down.
2) Loosen 2 of the Left side screw(CCW).
3) Loosen 5 of the front screw(CCW) and
detach the 2 Bracket drain and 1 Bracket
Low.
4) Disconnect the Connector Wire that is
connected to the Heat Exchanger.
5) Pull the Heat Exchanger and Drain.
6) Detach the Heat Exchanger.
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Disassembly andReassembly
Samsung Electronics 3-5
No Parts Procedure Remark
5 FAN & MOTOR 1) Loosen 11 of the front screw(CCW) and
detach the Cabinet Front Down.
2) Loosen 6 of the Front screw(CCW) and
detach the Bracket.
3) Disconnect the Connector Wire that is
connected to the Motor.
5) Pull the A'ssy Fan Blower.
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Disassembly and Reassembly
3-6 Samsung Electronics
No Parts Procedure Remark
6) Loosen 4 of the screw and 1 nut on the
CASE and Detach the motor and fan.
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Disassembly and Reassembly
Samsung Electronics 3-7
No Parts Procedure Remark
1 common 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 screwsxed to disassemble
cabi-front , and detach it.
AC018JXADCH
3-2 Outdoor Unit
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Disassembly and Reassembly
3-8 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.
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Disassembly and Reassembly
Samsung Electronics 3-9
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.
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Disassembly and Reassembly
3-10 Samsung Electronics
No Parts Procedure Remark
3 assy control out 1) lossen xing 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 rst
2) Looosen xing screw on both side.
3) disaessembly the pipes in both inlet and
outlet with welding torch.
4) detach the heat exchanger.
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Disassembly and Reassembly
Samsung Electronics 3-11
No Parts Procedure Remark
5 compressor 1) disconnect the compressor lead wire .
2)disassembly the felt comp sound.
loosen the 3 bolts at the bottom of
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Disassembly and Reassembly
3-12 Samsung Electronics
No Parts Procedure Remark
1 Cabi Front RH You must turn o 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)
AC024JXADCH, AC030JXADCH
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