Samsung AC035KNADEH, AC026KNADEH/EU, AC071JXSCEH, AC035KNADEH/EU, AC071KNADEH Service Manual
...
Refer to the service manual in the GSPN(see the rear cover) for the more information.
AIR CONDITIONER CONTENTS
SYSTEM AIR CONDITIONER
1. Precautions
2. Product Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram
6. Wiring Diagram
7. Reference Sheet
AC026KNADEH
AC035KNADEH
AC071KNADEH
AC026JXSCEH
AC035JXSCEH
AC071JXSCEH
Model :
AC026KNADEH
AC035KNADEH
AC071KNADEH
AC026JXSCEH
AC035JXSCEH
AC071JXSCEH
Indoor Unit Outdoor Unit
AC026KNADEH/EU
AC035KNADEH/EU
AC071KNADEH/EU
Model Code :
AC026JXSCEH/EU
AC035JXSCEH/EU
AC071JXSCEH/EU
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 Accessories
..........................................................................................................................................
2-4
13. Disassembly and Reassembly
...............................................................................................
3-1
3-1 Indoor Unit
.........................................................................................................................................
3-2
3-2 Outdoor Unit
.....................................................................................................................................
3-11
14. Troubleshooting
............................................................................................................................
4-1
4-1 Troubleshooting for indoor unit
..................................................................................................
4-1
4-2 Troubleshooting for outdoor unit
.................................................................................................
4-9
4-3 Troubleshooting by symptoms
.....................................................................................................
4-10
4-3-1 Indoor temperature sensor (open/short)
..........................................................................
4-10
4-3-2 Indoor heat exchanger temperature sensor (open/short)
.............................................
4-11
4-3-3 Indoor FAN error
.....................................................................................................................
4-12
4-3-4 Communication error after finishing Tracking
.................................................................
4-13
4-3-5 Indoor unit float sensor error
...............................................................................................
4-14
4-3-6 EEPROM circuit failure
...........................................................................................................
4-15
4-3-7 Outdoor unit is not powered on
.........................................................................................
4-16
4-4 Troubleshooting by symptoms ................................................................................................................... 4-18
4-4-1 Communication error
..........................................................................................................
4-18
4-4-2 Outdoor temperature sensor error
....................................................................................
4-19
4-4-3 Outdoor Coil temperature sensor error
............................................................................
4-21
4-4-4 Outdoor Discharge temperature sensor error
.................................................................
4-23
4-4-5 Outdoor Discharge over temperature error
.....................................................................
4-25
4-4-6 Outdoor Fan motor error .................................................................................................................... 4-26
4-4-7 Compressor starting error .................................................................................................................. 4-27
4-4-8 Compressor wire missing error/rotation error .......................................................................... 4-28
4-4-9 O.C(Over Current) error ....................................................................................................................... 4-29
4-4-10 DC_link voltage sensor error .......................................................................................................... 4-30
4-4-11 DC_link voltage under/over error, Over voltage protection error/PFC over load ..... 4-31
4-4-12 DC_link voltage sensor error ........................................................................................................... 4-32
4-4-13 Current sensor error/Input current sensor error .................................................................... 4-33
4-4-14 Heatsink sensor error/Heatsink over heat ................................................................................. 4-34
4-4-15 Comp Vlimit error/Comp current limit error ............................................................................ 4-35
4-4-16 EEPROM error/OTP error .................................................................................................................. 4-36
4-4-17 AC zero cross signal error ................................................................................................................. 4-37
4-4-18 Operation condition secession error............................................................................................ 4-38
4-4-19 Capacity miss match error ............................................................................................................... 4-39
4-4-20 Gas leak error ........................................................................................................................................ 4-40
15. PCB Diagram
.....................................................................................................................................
5-1
5-1 PCB Diagram
......................................................................................................................................
5-1
5-1-1 Indoor Unit PCB
.......................................................................................................................
5-1
5-1-4 Outdoor Unit PCB
...................................................................................................................
5-3
16. Wiring Diagram
..............................................................................................................................
6-1
6-1 Indoor Unit
........................................................................................................................................
6-1
6-2 Outdoor Unit
....................................................................................................................................
6-2
7. Reference Sheet
.............................................................................................................................
7-1
7-1 Index for Model Name
......................................................................................................................
7-1
7-2 Refrigerating Cycle Diagram
............................................................................................................
7-2
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.
Samsung Electronics
2-1
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 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)
Easy installation of ultra-lightweight indoor unit
2. Product Specifications
2-1 The Feature of Product
2-2
Samsung Electronics
ITEM
AC026KNADEH/EU
AC026JXSCEH/EU
AC035KNADEH/EU
AC035JXSCEH/EU
IMAGE
Indoor Unit
Outdoor Unit
Remote Controller
Power Product 1Φ, 220-240V/50 Hz 1Φ, 220-240V/50 Hz
Indoor L x H x D mm 896*2 61*261
896*2 61*261
Outdoor L x H x D mm 790*285*548 790*285*548
Indoor Product kg(Net) 11. 0 11. 0
Outdoor Product kg(Net) 37. 0 37. 0
Capacity
Cooling(STD) W 2600
3500
Heating(STD) W
3400 4300
Power
Consumption
Cooling(STD) W
610 940
Heating(STD) W
750 1020
Operation
current
Cooling(STD) A
3.1 4.4
Heating(STD) A
3.6 4.7
Noise
(Cooling/
Heating)
Indoor unit
In case of strongest air
blow
dBA
43/43 43/43
Outdoor unit
In case of strongest air
blow
dBA
52/52 54/54
Refrigerant (R410A) g 1270 1270
Connecting Pipe
Liquid mm 6.35
6.35
Gas mm
9.52 9.52
Additional Refrigerant (R410A) g/m
- -
Standard m
5 5
Extension length(Total) m 20
20
Extension length(Elevation) m
15 15
Option Code
Product
Option
01026C-195467-271A22-372500
01026C-195467-271A22-372500
Installation
Option
020000-100000-200100-300000
020000-100000-200100-300000
2-2 Product Specifications
Samsung Electronics
2-3
ITEM
AC071KNADEH/EU
AC071JXSCEH/EU
IMAGE
Indoor Unit
Outdoor Unit
Remote Controller
Power Product 1Φ, 220-240V/50 Hz
Indoor L x H x D mm 1063*317*294
Outdoor L x H x D mm 940*330*1420
Indoor Product kg(Net) 18.0
Outdoor Product kg(Net) 96.0
Capacity
Cooling(STD) W 7100
Heating(STD) W
8000
Power
Consumption
Cooling(STD) W
1860
Heating(STD) W
2330
Operation
current
Cooling(STD) A
8.4
Heating(STD) A
10.6
Noise
(Cooling/
Heating)
Indoor unit
In case of strongest air
blow
dBA
51/51
Outdoor unit
In case of strongest air
blow
dBA
58/60
Refrigerant (R410A) g 2900
Connecting Pipe
Liquid mm 9.52
Gas mm
15. 88
Additional Refrigerant (R410A) g/m
25
Standard m
5
Extension length(Total) m 75
Extension length(Elevation) m
30
Option Code
Product
Option
01026C-19547F-274750 -371700
Installation
Option
020000-100000-200100-300000
2-4
Samsung Electronics
Item Description Code No. Q’ty Remark
Remote Control
DB 93 -15882H
1
Essential Offer
(Indoor Unit)
Batteries for Remote Control
4301-000121
2
User’s & Installation Manual
DB68-06253A
DB68-06254A
1/1
Remote Control Holder
DB61- 0 6087A
1
M4 x 16 Tapped Screws
6002-000234
2
Cap Screws
DB67- 01404B
1
CARD WARRNATY
DB68- 02596B
1
Drain Plug
DB67 -20 011A
1
Essential Offer (Outdoor
Unit)
Rubber Leg DB67- 01533A 4
ASSY-INSTALLATION
MANUAL
DB68-05400A 1
2-3 Accessories
Samsung Electronics
3-1
Item Remarks
+SCREW DRIVER
Adjustable Wrench
(8mm, 10mm, 13mm)
M6, M8 Hex Wrench
Necessary Tools
3. Disassembly and Reassembly
3-2
Samsung Electronics
3-1 Indoor unit
AC026KNADEH / AC035KNADEH / AC071KNADEH
No Parts
Procedure Remark
1 PANEL-FRONT 1) Stop the driving of air conditioner and shut off
main power supply.
2) Detach FILTER PRE from the PANEL FRONT.
3) Cover Panel is assembled on bottom of indoor
unit as shown in the figure.
Remove the Cap Screw as shown on the right
side and then remove the screw and separate
the Cover Panel.
Samsung Electronics
3-3
No Parts
Procedure Remark
4) Cover Panel is fixed to body by Hook in center area and
side area.
5) Separate the hook after pushing both end of Cover
Panel as shown in the figure.
(Watch out for the damage of the hook)
6) Raise front part upward obliquely as shown in the
figure and then remove the hooks.
Center area
Side area
Side area
HOOK
015/022/028/
036/045
056/071/082
3-4
Samsung Electronics
No Parts
Procedure Remark
Caution:
Assembly of Cover Panel after service end.
-
Reassembly is in the reverse order of the
removal.
- Piping and drain hose must be careful not to
damage and Progress must be done with both
hands.
Hook (Side)
Hook (Center)
Screw
Cap Screw
Samsung Electronics
3-5
No Parts
Procedure Remark
7) To detach the PANEL-FRONT from the main
frame, unfasten 2 screws at the bottom.
(use + Screw Driver)
8) To detach the COVER-PANEL from the main
frame, loosen 4 HOOK Structures.
When separate the hook :
Use the (-) screw Driver.
(-)Screw Driver Insert the hook and then pull the
hook as shown on the right side.
(Watch out for the damage of the hook)
3-6
Samsung Electronics
No Parts
Procedure Remark
9) Remove the Panel Frame from the Main
Frame as shown on the right side.
Samsung Electronics
3-7
No Parts
Procedure Remark
2
CONTORL IN
1) Lossen Sub PBA Wire.
Caution:
When you separate the connector,
pull pressing the locking button.
2) Lossen Stepping Motor, EEV, Display,
Sensor, SPI, Fuse Wire.
Caution:
When you separate the connector,
pull pressing the locking button.
3) Lossen Motor, Terminal Wire.
Caution:
When you separate the connector,
pull pressing the locking button.
4) Loosen Earth Wire.
3-8
Samsung Electronics
No Parts
Procedure Remark
5 EVAPORATOR 9) Take off the CASE-CONTROL from
the main frame after loosen the remaining
connector.
Caution:
When you separate the connector,
pull pressing the locking button.
3 TRAY DRAIN 1) To detach TRAY-DRAIN from the main frame,
pull the bottom of the TRAY-DRAIN towards
you.
Samsung Electronics
3-9
No Parts
Procedure Remark
4 Evaporator 1) Detach the HOLDER PIPE.
2) Unfasten the screw at the left side.
(use + Screw Driver)
3) Unfasten the screw at the right side.
(use + Screw Driver)
4) To detach Evaporator from the main frame,
pull the bottom of the Evaporator towards
you.
3-10
Samsung Electronics
No Parts
Procedure Remark
5 FAN MOTOR
&
CROSS FAN
1) Unfasten the screw. (use + Screw Driver)
2) Detach the FAN Motor case.
3) Unfasten the screw a little.
(use + Screw Driver)
4) Pull the CROSS-FAN to the left side.
Samsung Electronics
3-11
AC026JXSCEH / AC035JXSCEH
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 cabinet side edges and to detach the
cover-top
3) Loosen 7 screws fixed to disassemble
cabi-front , and detach it.
3-2 Outdoor unit
3-12
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
3-13
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 between assy control out and motor.
3) Loosen 2 pcs bracket-motor screw and
detach it.
3-14
Samsung Electronics
No Parts Procedure Remark
3 assy control out 1) Loosen fixing 1 screw from cover -control
2) Detach several connections from assy control out, take out assy control out.
4 Heat exchanger 1) Release the refrigerant at first
2) Loosen fixing screw on both side.
3) Disassemble the pipes in both inlet and
outlet with welding torch.
4) Detach the heat exchanger.
Samsung Electronics
3-15
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 compres
sor.
3-16
Samsung Electronics
AC071JXSCEH
No Parts Procedure Remark
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)
4 Guard Cond
1) Pull the sensor from Guard Cond.
2) Unscrew and remove 4 screws
in the Guard Cond.
(Use +Screw Driver)
Loading...