Samsung 4 Way Cassette AC018JN4DCH/AA, AC024JN4DCH/AA, AC030JN4DCH/AA, AC036JN4DCH/AA, AC042JN4DCH/AA, AC048JN4DCH/AA, AC018JXADCH/AA, AC024JXADCH/AA, AC030JXADCH/AA, AC036JXADCH/AA, AC042JXADCH/AA, AC048JXADCH/AA Air Conditioner Service Manual

SYSTEM AIR CONDITIONER
4 WAY CASSETTE SERIES
Model :
AIR CONDITIONER
INDOOR UNIT
OUTDOOR UNIT
AC018JN4DCH/AA
AC024JN4DCH/AA
AC030JN4DCH/AA
AC036JN4DCH/AA
AC042JN4DCH/AA
AC048JN4DCH/AA
AC018JXADCH/AA
AC024JXADCH/AA
AC030JXADCH/AA
AC036JXADCH/AA
AC042JXADCH/AA
AC048JXADCH/AA
CONTENTS
1. Precautions
2. Product Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram
6. Wiring Diagram
7. Reference Sheet
Section 0
Contents
1. 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
2. Product Specifications...................................................................................... 2-1
2-1 The Feature of Product .....................................................................................................................................
2-1
2-1-1 Features.......................................................................................................................................................
2-1
2-2 Product Specifications ......................................................................................................................................
2-4
2-3 Specifications of optional items ....................................................................................................................
2-6
2-3-1 Accessories.................................................................................................................................................
2-6
2-3-2 Filter specifications ................................................................................................................................. 2-10
3. Disassembly and Reassembly.......................................................................... 3-1
3-1 Indoor unit .....................................................................................................................................................
3-2
3-2 Outdoor Unit .................................................................................................................................................
3-8
4. Troubleshooting ............................................................................................... 4-1
4-1 Setting an indoor unit address and installation option ......................................................................
4-1
4-1-1 The procedure of setting option.......................................................................................................
4-1
4-1-2 The procedure of setting option.......................................................................................................
4-2
4-1-3 Order for Setting Options (Wired Remote Controller) .............................................................
4-5
4-1-4 Setting an indoor unit installation option
(Suitable for the condition of each installation location) ........................................................
4-6
4-1-5 Changing a particular option .............................................................................................................
4-8
4-1-6 Option code for each model...............................................................................................................
4-9
4-2 Items to check before diagnostics ............................................................................................................... 4-10
4-2-1 Test run mode and View Mode ......................................................................................................... 4-10
4-2-2 Eco Mode [Power Saving Mode] ....................................................................................................... 4-12
4-2-3 Four directions cassette type ............................................................................................................. 4-13
4-2-4 Wired remote controller ....................................................................................................................... 4-14
4-3 Troubleshooting by symptoms ..................................................................................................................... 4-17
4-3-1 Indoor temperature sensor (open/short) ...................................................................................... 4-17
4-3-2 Indoor heat exchanger temperature sensor (open/short)..................................................... 4-18
4-3-3 Indoor FAN error...................................................................................................................................... 4-19
4-3-4 Communication error after finishing Tracking............................................................................ 4-20
4-3-5 Indoor unit float sensor error ............................................................................................................. 4-21
4-3-6 EEPROM circuit failure ........................................................................................................................... 4-22
4-3-7 Thermal Fuse Open Error ..................................................................................................................... 4-23
4-3-8 When the outdoor unit power is not ON – Initial Diagnosis : 3-phase products ......... 4-24
4-3-9 Indoor/outdoor communication error (1min.) (Error Code: E202)...................................... 4-28
Samsung Electronics
1
Section 0
Contents
4-3-10 Communication error between outdoor unit INV 㽧 MAIN MICOM (1 min.)
(Error Code: E203) .................................................................................................................................. 4-30
4-3-11 External Sensor Error (Error Code: E221, E231, E251, E320)................................................. 4-31
4-3-12 Outdoor Unit Fan Error (Error Code: E458, E475)..................................................................... 4-32
4-3-13 Error of Compressor Startup and Rotation (Error Code: E461, E467)............................... 4-33
4-3-14 Error of under-current error / PFC over-current (Error Code: E462, E484) ..................... 4-35
4-3-15 IPM Over-current Error (Error Code: E464).................................................................................. 4-36
4-3-16 DC LINK Over-current and Low-voltage Error (Error Code: E466)..................................... 4-39
4-3-17 Gas Leakage Error (Error Code: E554 ) .......................................................................................... 4-41
4-3-18 Pipe Blocking Error (Error Code: E422) ......................................................................................... 4-43
4-3-19 Other .......................................................................................................................................................... 4-44
5. PCB Diagram and Parts List.............................................................................. 5-1
5-1 Indoor Unit .............................................................................................................................................................
5-1
5-1-1 MAIN PCB....................................................................................................................................................
5-1
5-1-2 Panel PCB....................................................................................................................................................
5-3
5-2 Outdoor Unit .........................................................................................................................................................
5-4
5-2-1 MAIN PCB....................................................................................................................................................
5-4
5-2-2 SUB PCB .......................................................................................................................................................
5-6
5-2-3 MAIN PCB....................................................................................................................................................
5-7
5-2-4 INVERTER PCB ...........................................................................................................................................
5-8
5-2-5 EMI PCB........................................................................................................................................................
5-9
6. Wiring Diagram ................................................................................................. 6-1
6-1 Indoor Unit .............................................................................................................................................................
6-1
6-2 Outdoor Unit .........................................................................................................................................................
6-2
7. Reference Sheet ................................................................................................ 7-1
2
7-1 Index for Model Name ......................................................................................................................................
7-1
7-1-1 Indoor Unit .................................................................................................................................................
7-1
7-1-2 Outdoor Unit .............................................................................................................................................
7-2
7-1-3 Panel .............................................................................................................................................................
7-3
7-2 Refrigerating Cycle Diagram ..........................................................................................................................
7-4
Samsung Electronics
Precautions
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 When repairing the equipment, connection of the harness parts must be firm and solid.
– A loose connection may cause noise or other malfunction.
O 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.
O 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.
O Fasten the valve caps of service valves and charging valves of outdoor unit as much as possible using adjustable wrenches.
O 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
O 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.
O 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.
O Do not let end users repair the products themselves.
– Unauthorized disassembly might cause electric shock or fire.
Samsung Electronics
1-1
Precautions
1-3 Precautions related to product safety
O 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.
O A damaged power line or power plug must be replaced to prevent danger.
O 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.
O Do not use multiple electric outlets.
– This might cause electric shock or fire.
O 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.
O Unplug the power cable or turn off the auxiliary power switch for electric part replacement and repair service.
– Otherwise it might cause electric shock.
O 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
O 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.
O 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.
1-2
Samsung Electronics
Product Specifications
2. Product Specifications
2-1 The Feature of Product
2-1-1 Features
Q What is four-direction cassette type air conditioner?
Stylish design and pleasant cooling/heating will provide a pleasant ambience.
Four-direction cassette with powerful three-dimensional cooling and heating from
four directions offers gapless pleasant environment and has the right design for high
class interior and will provide an extra-stylish look.
Q Convenient and efficient installation
t &BTZJOTUBMMBUJPOPGVMUSBMJHIUXFJHIUJOEPPSVOJU
A filter that obviates the need for replacement and/or
maintenance up to 1,000~2,000 hours and retains its initial
cleanness.
17kg
29kg
35%
20Kg
20kg
Weight
4".46/(
HAUZEN
Other companies
[Comparison
weights
companies
[Comparison ofof
weights
withwith
otherother
companies
11kg] 11kg]
t $PSOFSTFQBSBCMFQBOFMGPSTJNQMFMFWFMJOH
The panel structure with four corners that can be separated enables
convenient installation and service as only the required corner can
be separated to adjust leveling when necessary.
t .
BJOUBJOQMFBTBOUUFNQFSBUVSFXJUIGJOFUFNQFSBUVSFDPOUSPM
with a resolution of 0.1°C
The equipment operates with minimum power to maintain the
optimum temperature and it always maintains a pleasant room
temperature in small temperature steps of 0.1°C that you may
not be able to sense.
Samsung Electronics
2°C
1°C
Setting
temperature
-1°C
-2°C
Smart inverter air conditioner
General air conditioner
2-1
Product Specifications
Q Rich and pleasant cooling/heating without gaps
t 4VQFSJPSIFBUJOHQFSGPSNBODFFWFOBU°C
The equipment achieves a stable heating performance with the
superior reliability of low temperature heating so that the indoor
unit blows air of 40°C or higher in a cold winter when the outside
temperature is below -20°C.
0℃
-20°C
15℃
t 1MFBTBOUSPPNXJUIBDIFDLWBMWFGPSQSFWFOUJOHCBDLGMPX
A check valve is installed to prevent condensed water drained from the indoor unit flowing back into the indoor unit
for various reasons such as improper drain pipe installation or power cut, and indoor leak or bad smell by backflow
is fundamentally blocked.
t ' VODUJPOUPDPOUSPMPQUJNVNSPPNUFNQFSBUVSFUIBU reduces temperature variation
Room temperature sense condition can be set to
‘Indoor + average of wired remote controller’ to minimize the
variation in temperature between the upper and lower levels
generated by the effects of indoor air flow so that optimum
room temperature will be maintained.
t5FNQFSBUVSFTFUUJOH"
*OEPPSVOJUUFNQFSBUVSFTFUUJOH
t5FNQFSBUVSFTFUUJOH#
8JSFESFNPUFDPOUSPMMFSUFNQFSBUVSFTFUUJOH
t 0
CUBJOFE4UFSJMJ[BUJPO5SFBUNFOU4'NBSLUIBUSFNPWFT the threat of mildew.
The equipment is very sanitary as an indoor heat exchange unit
and filters are treated with world-recognized sterilization treatment
technology to prevent the growth of mildew inside the unit.
t $
POWFOJFOUDPOUSPMGPSIJHIDFJMJOHTXJUIXJOEWFMPDJUZ
control function
When the unit is installed indoors, air flow can be set to
reach the floor through the PCB option so that the unit can
be installed on a ceiling with a height of 3.5 meters.
t1BUFOUSFHJTUFSFEJO,PSFB64"+BQBOBOE*UBMZ
(Patent number: Korea P-082555/ Italy 1294250/USA 5947
t*OEPPS1$#PQUJPOTFUUJOH
t0/*ODSFBTFXJOEWFMPDJUZt0''%FDSFBTFXJOEWFMPDJUZ
3 .5 m
[When installing on a ceiling
of 3m or higher]
2-2
2 . 7m
[When installing on a ceiling
of 3m or lower]
Samsung Electronics
Product Specifications
Q Convenience with more added details
t &BTJFSUIBO&WFSUP$MFBOUIF#MBEF
Other products require you to disassemble and remove the panel
in order to clean the blade, but our product is designed so that the
blade safely and easily detaches and re-attaches, enabling you to
easily clean it.
Q Rich and pleasant cooling/heating without gaps (cont.)
t 4
FMGEJBHOPTUJDGVODUJPOPGJOEPPSVOJUUPNJOJNJ[F
inconvenience in case of malfunction
If the indoor unit malfunctions due to equipment failure
during operation, the type of problem can be checked from
the panel display, and the service time and inconvenience can
be minimized by submitting a service request based on the
information from the self diagnostics of indoor unit.
t .
JOJNVNJOTUBMMBUJPODPTUCZCVJMUJOIJHIIFBEESBJOQVNQ
The high head pump is built into the indoor unit and the
condensed water generated during the cooling operation will
be drained to the outside. The pumping height can be up to
750mm so that drain pip installation can be easier and save
time and cost of installation.
t * OEJWJEVBM#MBEF$POUSPM
- Capable of realizing optimal air current in accordance to
customer preference and diverse structures located in
different directions through individual control of each of the
4 blades.
- Individual control can be realized through both cable and
wireless remote control.
Samsung Electronics
2-3
Product Specifications
2-2 Product Specifications
Development Model
ITEM
AC018JN4DCH
AC018JXADCH
AC024JN4DCH
AC024JXADCH
AC030JN4DCH
AC030JXADCH
18000
20000
1540
1600
11.71
12.51
208~230V/60Hz
7.1
7.4
42/42
58/58
840*840*204
24000
27000
2110
2500
11.41
10.81
208~230V/60Hz
9.8
11.6
45/45
60/60
840*840*204
30000
32000
2890
3110
10.41
10.31
208~230V/60Hz
13.4
14.4
47/47
60/60
840*840*288
898*898*275
898*898*275
898*898*357
880*310*638
940*330*998
940*330*998
1023*413*730
995*426*1096
995*426*1096
INDOOR UNIT
IMAGE
OUTDOOR UNIT
REMOTE CONTROLLER
Cooling [Btu/h]
Heating [Btu/h]
Cooling [W]
Power
Consumption
Heating [W]
Cooling [Btu/hW]
EER/COP
Heating [Btu/hW]
Voltage / Frequency
Cooling [A]
Operating
Current
Heating [A]
Indoor Unit [dBA] (C/H)
Noise
Outdoor Unit [dBA] (C/H)
Net
Indoor Unit [mm]
Dimension
Outdoor Unit [mm]
(WxDxH)
Size
Shipping Indoor Unit [mm]
Dimension
Outdoor Unit [mm]
(WxDxH)
Indoor Unit [kg]
Net Weight
Outdoor Unit [kg]
Weight
Indoor Unit [kg]
Shipping
Weight
Outdoor Unit [kg]
Indoor Fan Motor
Harness
Compressor
Specifications
Outdoor Fan Motor
High Pressure
Piping
Low Pressure
PANEL
Refrigerant Type
Factory Charging [g]
Additional Refrigerant (for every 1m) [g]
Basic Piping Length [m]
Max. Piping Length [m]
Max. Level Difference [m]
Performance
Option Code
2-4
15.5
45
19.5
48
DB31-00578B
UG4T150LNBEQ
DB31-00642A
4.1
1.4
15.5
19
64.5
70
19.5
24
69.5
74
DB31-00578B
DB31-00577A
UG4T200LNFE4
UG8T300LNBJU
DB31-00579A
DB31-00579A
4.1
4.1
1.4
1.4
PC4NUSKFN
R410A
1300
2100
2600
10
10
22
7.5
7.5
7.5
30
50
50
20
30
30
01406F-1950D8-27343B-370005 01406F-1950D8-274750-370005 01406F-1950E8-275A64-370045
020000-100000-200000-300000 020000-100000-200000-300000 020000-100000-200000-300000
034745-103D49-200000-300002 034042-10414C-200000-300002 033E39-103B45-200000-300002
Samsung Electronics
Product Specifications
Development Model
ITEM
AC036JN4DCH
AC036JXADCH
AC042JN4DCH
AC042JXADCH
AC048JN4DCH
AC048JXADCH
36000
40000
2980
3480
12.11
11.51
208~230V/60Hz
13.8
16.1
50/50
60/60
840*840*288
42000
47000
4040
4350
10.41
10.81
208~230V/60Hz
18.7
20.1
51/51
62/62
840*840*288
48000
53000
4950
5050
9.71
10.51
208~230V/60Hz
22.9
23.4
51/51
62/62
840*840*288
898*898*357
898*898*357
898*898*357
940*330*1210
940*330*1210
940*330*1210
995*426*1388
995*426*1388
995*426*1388
INDOOR UNIT
IMAGE
OUTDOOR UNIT
REMOTE CONTROLLER
Cooling [Btu/h]
Heating [Btu/h]
Cooling [W]
Power
Consumption
Heating [W]
Cooling [Btu/hW]
EER/COP
Heating [Btu/hW]
Voltage / Frequency
Cooling [A]
Operating
Current
Heating [A]
Indoor Unit [dBA] (C/H)
Noise
Outdoor Unit [dBA] (C/H)
Net
Indoor Unit [mm]
Dimension
Outdoor Unit [mm]
(WxDxH)
Size
Shipping Indoor Unit [mm]
Dimension
Outdoor Unit [mm]
(WxDxH)
Indoor Unit [kg]
Net Weight
Outdoor Unit [kg]
Weight
Indoor Unit [kg]
Shipping
Weight
Outdoor Unit [kg]
Indoor Fan Motor
Harness
Compressor
Specifications
Outdoor Fan Motor
High Pressure
Piping
Low Pressure
PANEL
Refrigerant Type
Factory Charging [g]
Additional Refrigerant (for every 1m) [g]
Basic Piping Length [m]
Max. Piping Length [m]
Max. Level Difference [m]
Performance
Option Code
Samsung Electronics
19
88
24
98
DB31-00577A
UG5T450FUEJX
DB31-00579A
4.1
1.4
19
19
88
88
24
24
98
98
DB31-00577A
DB31-00577A
UG5T450FUEJX
UG5T450FUEJX
DB31-00579A
DB31-00579A
4.1
4.1
1.4
1.4
PC4NUSKFN
R410A
2800
2800
2800
33
33
33
7.5
7.5
7.5
75
75
75
30
30
30
01406F-195439-276470-370045 01406F-19544A-277D8C-370045 01406F-19545B-278CA0-370045
020000-100000-200000-300000 020000-100000-200000-300000 020000-100000-200000-300000
03453F-102B35-200000-300002 034343-103940-200000-300002 034748-104444-200000-300002
2-5
Product Specifications
2-3 Specifications of optional items
2-3-1 Accessories
Item
2-6
Description
$PEF/P
Q’ty
Ass'y drain hose
DB94-02719B
1
Cable-tie
DB65-00191A
6
Seal-drain ass'y
DB62-05810A
1
Seal-drain ass'y
DB62-05810F
1
Seal-drain ass'y
DB62-05810G
1
Cap Drain
DB63-10355C
3
Drain Plug
DB67-00806A
1
Rubber Leg
DB73-20134A
4
BOLT-FLANGE
6011-003975
4
ASSY-INSTALLATION
MANUAL
DB68-03837A
1
CARD WARRNATY
DB68-01675A
1
Remark
Essential Offer
(Indoor Unit)
Essential Offer
(Outdoor Unit)
Essential Offer
(Panel)
Samsung Electronics
Product Specifications
Accessories (cont.)
■8JSFMFTTSFNPUFDPOUSPMMFS.3&).3&$
Item
Samsung Electronics
Descriptions
$PEF/P
Q'TY
Wireless remote controller
DB93-14643F(MR-EH00)
DB93-14643K(MR-EC00)
1
Batteries for remote controller
(specification: AAA type)
4301-000121
2
Remote controller holder
DB61-06087A
1
M4×16 screw
6002-000581
2
User’s manual
DB68-04667A
1
Remark
Optional
2-7
Product Specifications
Accessories (cont.)
■8JSFESFNPUFDPOUSPMMFS.838&/
<$PEF/P%#">
Item
Descriptions
$PEF/P
Q'TY
Wired remote controller
DB93-11251F
1
Cable tie
DB65-10088B
2
Cable clamp
DB65-10074E
3
Remark
Optional
2-8
M4×16 Screw
6002-000474
5
User’s manual
DB68-03732A
1
Installation guide
DB68-03716A
1
Samsung Electronics
Product Specifications
Accessories (cont.)
■$FOUSBMDPOUSPMMFS.$."%/
<$PEF/P%#">
Item
Descriptions
$PEF/P
Q'TY
Central controller
DB93-03425Q
1
Cable tie
DB65-10088B
2
Cable clamp
DB65-10074E
5
Remark
Optional
Samsung Electronics
M4 X 16 Screw
6002-000474
7
User’s manual
DB68-03736A
1
Installation guide
DB68-03721A
1
2-9
Product Specifications
2-3-2 Filter specifications
Item
2-10
Descriptions
$PEF/P
Dust filter
DB63-03158A
Remark
Basic/
Water wash
Samsung Electronics
3. Disassembly and Reassembly
Q/FDFTTBSZ5PPMT
Item
Remarks
+SCREW DRIVER
Adjustable Wrench
(8mm, 10mm, 13mm)
M6, M8 Hex Wrench
Samsung Electronics
3-1
Disassembly and Reassembly
3-1 Indoor unit
/P
Parts
Procedure
1
Panel
1) Push the handles on both sides of the
Samsung logo towards the product’s interior
to open the Grille.
Remark
2) Push up the green knob in the Open
direction, and detach the white link from
the panel. Detach the safety clip.
3) Remove the 2 fixed screws to remove the
Control-Box Cover. (Use +Screw Driver)
4) Remove the Remocon-Receiver and Blade
Connector Wire from the PBA. (3EA)
5) Push the 4 panel corners and cover
downwards to remove it.
3-2
Samsung Electronics
Disassembly and Reassembly
/P
Parts
Procedure
Remark
6) Disassemble the bolts that are assembled
with the indoor unit at the 4 panel corners.
7) Press the Steel Hangers at both sides of the
panel inwards, and rotate them 90 degrees
to remove it from the indoor unit’s Hock.
Remove the panel from the indoor unit.
2
Control-Box
1) Disconnect the Connector Wire that is
connected to the indoor unit’s PBA from
the PBA.
2) Unscrew the 2 fixed screws on both
sides of the Control Box, and disassemble
the Control Box from the indoor unit.
(Use +Screw Driver)
Samsung Electronics
3-3
Disassembly and Reassembly
/P
Parts
3
Bell-Mouth
Procedure
Remark
1) Unscrew the screw fixed on the Bell-Mouth.
(Use +Screw Driver)
2) Push the Bell-Mouth in the direction
opposite to where it’s installed on the
Control-Box to remove it.
4
Drain Pan
1) Unscrew the screws on the 4 corners
of the indoor unit. (Use +Screw Driver)
2) Remove the Drain Pan from the indoor unit.
3-4
Samsung Electronics
Disassembly and Reassembly
/P
Parts
5
Drain Pump
&
Hose
Procedure
Remark
1) Remove the 2 fixed screws and
disconnect the white drainage hose from
the Drain Pump. (Use +Screw Driver)
2) Remove the 2 screws and take the
Drain-Hose out from the indoor unit to
disassemble the transparent Drain-Hose
fixed on the side of the indoor unit.
(Use +Screw Driver)
6
Evap.
Temperature
Sensor
Samsung Electronics
1) Use your hand to remove the temperature
sensor attached to the Evap Pipe along with
the fixing clip.
3-5
Disassembly and Reassembly
/P
Parts
Procedure
7
Fan
&
Motor
1) Turn the hexangular nut attached to the
top of the Fan counterclockwise to remove it.
Take the Fan out of the Motor.
Remark
2) Turn the three hexangular nuts on the
Motor counterclockwise to remove the nuts.
Take the Motor Wires attached to these
three locations out with your hands prior to
removing the Motor.
8
Evaporator
1) Remove the screws of the 2 Steel Holder
Evaps that are used to fix the Heat Exchanger,
and then remove it. (Use +Screw Driver)
2) Remove the 2 fixing screws of the Partition
Evap at the Heat Exchanger’s In/Out Pipe.
(Use +Screw Driver)
3-6
Samsung Electronics
Disassembly and Reassembly
/P
Parts
Procedure
Remark
3) Remove the screw of the Cover Pipe
that is used to fix the In/Out Pipe.
Remove the In/Out Pipe. (Use +Screw Driver)
4) Remove the Heat Exchanger from the
indoor unit’s cabinet.
Samsung Electronics
3-7
Disassembly and Reassembly
3-2 Outdoor Unit
Q"$+9"%$)
No
Parts
Procedure
1
common work
1) loosen 1 pcs screw of cover control,and
detach it.
Remark
2) loosen 5 pcs screws on both right and
left cabniet side edges and to detach the
cover-top
3) Loosen 7 screwsfixed to disassemble
cabi-front , and detach it.
3-8
Samsung Electronics
Disassembly and Reassembly
No
Parts
common work
Procedure
Remark
4) loosen 7 screws to disassemble the cabiright ,and detach it.
5) loosen 2 screws to disassemble steel-bar.
6) loosen 3 screws to disassemble cabi-left.
Samsung Electronics
3-9
Disassembly and Reassembly
No
Parts
Procedure
2
fan&motor
1) loosen 1 screw as indication and detached
the fan.
Remark
2) loosen 4 pcs motor screws and disconnect
the wire betwwen assy control out and motor.
3) loosen 2 pcs bracket-motor screw and
detach it.
3-10
Samsung Electronics
Disassembly and Reassembly
No
Parts
3
assy control out
1) lossen fixing 1 screw from cover -control
2) detach several connections from assy control out, take out assy control out.
4
Heat exchanger
1) Release the refrigerant at first
2) Looosen fixing screw on both side.
3) disaessembly the pipes in both inlet and
outlet with welding torch.
4) detach the heat exchanger.
Samsung Electronics
Procedure
Remark
3-11
Disassembly and Reassembly
No
Parts
5
compressor
Procedure
Remark
1) disconnect the compressor lead wire .
2)disassembly the felt comp sound.
loosen the 3 bolts at the bottom of
3-12
Samsung Electronics
Disassembly and Reassembly
Q"$+9"%$)"$+9"%$)
/P
Parts
1
Cabi Front RH
Procedure
Remark
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
3
Cabi Install Front
Samsung Electronics
1) Unscrew and remove 9 screws
on each side of the Cabinet-Top.
(Use +Screw Driver)
1) Unscrew and remove 1 screw
in the Cabinet-Install Front.
(Use +Screw Driver)
3-13
Disassembly and Reassembly
/P
Parts
4
Guard Cond
Procedure
Remark
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)
3-14
Samsung Electronics
Disassembly and Reassembly
/P
Parts
6
Cabi Install Back
7
Cabi Front LF
Samsung Electronics
Procedure
Remark
1) Unscrew and remove 1 screw
in the Cabinet-Install Back.
(Use +Screw Driver)
1) Unscrew and remove 10 screws
in the Cabinet-Front LF.
(Use +Screw Driver)
3-15
Disassembly and Reassembly
/P
Parts
8
Fan
3-16
Procedure
Remark
1) Turn 2 mounting nuts as shown in the
picture and remove it. (Use Adjustable
Wrench)
Samsung Electronics
Disassembly and Reassembly
/P
Parts
Procedure
9
Motor
1) Separate the Fan Propeller.
2) Unscrew and remove the 8 Motor mounting
screws. (Use +Screw Driver)
Remark
3) Disconnect the Motor wire From
Ass'y Control Out.
10
Bracket Motor
Samsung Electronics
1) Unscrew and remove 2 mounting screws
in Bracket Motor. (Use +Screw Driver)
3-17
Disassembly and Reassembly
/P
Parts
11
Control Out
Procedure
Remark
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.
3-18
Samsung Electronics
Disassembly and Reassembly
/P
Parts
12
Ass'y 4way Valve
Procedure
Remark
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.
Samsung Electronics
3-19
Disassembly and Reassembly
/P
Parts
13
Ass;y EEV Valve
Procedure
Remark
1) Unscrew and remove 2 mounting screws
in Service Valve. (Use +Screw Driver)
2) Separate the pipe from the Entrance/Exit
using a welder.
14
Compressor
1) Unscrew and remove 1 mounting nut
in Cover Terminal. (Use Adjustable Wrench)
2) Separate the Compressor Felt Sound.
3-20
Samsung Electronics
Disassembly and Reassembly
/P
Parts
Procedure
Remark
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)
2) Separate the Compressor Felt Sound.
Samsung Electronics
3-21
Disassembly and Reassembly
Q"$+9"%$)"$+9"%$)"$+9"%$)
/P
Parts
Procedure
1
Cabi Front RH
You must turn off the Power before
disassembly.
Remark
1) Unscrew and remove two mounting
screw in the Cabinet Front RH.
(Use +Screw Driver)
2
Cabi Top
3
Cabi Install Front
4
Guard Cond
1) Unscrew and remove 9 screws
on each side of the Cabinet-Top.
(Use +Screw Driver)
1) Unscrew and remove 1 screw
in the Cabinet-Install Front.
(Use +Screw Driver)
1) Pull the sensor from Guard Cond.
2) Unscrew and remove 4 screws
in the Guard Cond.
(Use +Screw Driver)
3-22
Samsung Electronics
Disassembly and Reassembly
/P
Parts
5
Cabi Back RH
Procedure
Remark
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
7
Cabi Front LF
8
Fan
Samsung Electronics
1) Unscrew and remove 1 screw
in the Cabinet-Install Back.
(Use +Screw Driver)
1) Unscrew and remove 10 screws
in the Cabinet-Front LF.
(Use +Screw Driver)
1) Turn 2 mounting nuts as shown in
the picture and remove it.
(Use Adjustable Wrench)
3-23
Disassembly and Reassembly
/P
Parts
9
Motor
Procedure
Remark
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
11
Control Out
1) Unscrew and remove 2 mounting
screws in Bracket Motor.
(Use +Screw Driver)
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.
3-24
Samsung Electronics
Disassembly and Reassembly
/P
Parts
12
Assy 4way Valve
Procedure
Remark
1) Purge the Coolant first.
2) Unscrew and remove 2 mounting
screws in Service Valve. (Use +Screw
Driver)
3) 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
Assy EEV Valve
1) Unscrew and remove 2 mounting
screws in Service Valve.
(Use +Screw Driver)
2) Separate the pipe from the Entrance/
Exit using a welder.
Samsung Electronics
3-25
Troubleshooting
4. Troubleshooting
4-1 Setting an indoor unit address and installation option
▶ Set the indoor unit address and installation option with remote controller option.
Set the each option separately since you cannot set the ADDRESS setting and indoor unit installation setting option at the
same time.You need to set twice when setting indoor unit address and installation option.
4-1-1 The procedure of setting option
Entering mode for
setting option
Option setting mode
Mode change
Step 1
High Temp Button
High Fan Button
Low Temp Button
Low Fan Button
Entering mode for option setting.
1. Remove batteries from the remote controller.
2. Insert the batteries while you press [+ Temperature] and [- Temperature] button at the same time.
3. Check if you have entered the option setting status.
Step 2
Option setting procedure. (The option setting procedure is the same for other models.)
After entering the option setting status, select the option as listed below.
t 0QUJPOTFUUJOHJTBWBJMBCMFGSPN4&(UP4&(
t 4&(4&(4&(4&(BSFOPUTFUBTQBHFPQUJPO
t 4FUUIF4&(_4&(4&(_4&(JOUIF0/TUBUVTBOE4&(_4&(_JOUIF0''TUBUVT
SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12
0
X
X
X
X
X
1
X
X
X
X
X
SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24
2
X
X
X
X
X
3
X
X
X
X
X
Samsung Electronics
On(SEG1~12)
Off(SEG13~24)
4-1
Troubleshooting
4-1-2 The procedure of setting option
Option setting
1. Setting SEG2, SEG3 option
Press Low Fan button( ) to enter SEG2 value.
Press High Fan button( ) to enter SEG3 value.
Each time you press the button, p p … p will be selected in rotation .
Status
SEG2
SEG3
SEG4
SEG5
SEG6
SEG8
SEG9
SEG10
SEG11
SEG12
SEG14
SEG15
2. Setting Cool mode
Press Mode button to be changed to Cool mode in the ON status .
3. Setting SEG4, SEG5 option
Press Low Fan button( ) to enter SEG4 value.
Press High Fan button( ) to enter SEG5 value.
Each time you press the button, p p … p will be selected in rotation .
4. Setting Dry mode
Press Mode button to be changed to DRY mode in the ON status .
5. Setting SEG6, SEG8 option
Press Low Fan button( ) to enter SEG6 value.
Press High Fan button( ) to enter SEG8 value.
Each time you press the button, p p … p will be selected in rotation .
6. Setting Fan mode
Press Mode button to be changed to FAN mode in the ON status .
7. Setting SEG9, SEG10 option
Press Low Fan button( ) to enter SEG9 value.
Press High Fan button( ) to enter SEG10 value .
Each time you press the button, p p … p will be selected in rotation .
8. Setting Heat mode
Press Mode button to be changed to HEAT mode in the ON status .
9. Setting SEG11, SEG12 option
Press Low Fan button( ) to enter SEG11 value .
Press High Fan button( ) to enter SEG12 value .
Each time you press the button, p p … p will be selected in rotation .
10. Setting Auto mode
Press Mode button to be changed to AUTO mode in the OFF status.
11. Setting SEG14, SEG15 option
Press Low Fan button( ) to enter SEG14 value.
Press High Fan button( ) to enter SEG15 value.
Each time you press the button, p p … p will be selected in rotation.
4-2
Samsung Electronics
Troubleshooting
The procedure of setting option (cont.)
Option setting
Status
12. Setting Cool mode
Press Mode button to be change to Cool mode in the OFF status.
13. Setting SEG16, SEG17 option
Press Low Fan button( ) to enter SEG16 value.
Press High Fan button( ) to enter SEG17 value.
Each time you press the button, p p … p will be selected in rotation.
SEG16
SEG17
SEG18
SEG20
SEG21
SEG22
SEG23
SEG24
14. Setting Dry mode
Press Mode button to be change to Dry mode in the OFF status.
15. Setting SEG18, SEG20 option
Press Low Fan button( ) to enter SEG18 value.
Press High Fan button( ) to enter SEG20 value.
Each time you press the button, p p … p will be selected in rotation.
16. Setting Fan mode
Press Mode button to be change to Fan mode in the OFF status.
17. Setting SEG21, SEG22 option
Press Low Fan button( ) to enter SEG21 value.
Press High Fan button( ) to enter SEG22 value.
Each time you press the button, p p … p will be selected in rotation.
18. Setting Heat mode
Press Mode button to be change to HEAT mode in the OFF status.
19. Setting SEG23, SEG24 mode
Press Low Fan button( ) to enter SEG23 value.
Press High Fan button( ) to enter SEG24 value.
Each time you press the button, p p … p will be selected in rotation.
Samsung Electronics
4-3
Troubleshooting
Step 3. Check the option you have set
After setting option, press
button to check whether the option code you input is correct or not.
→
→
→
→
→
→
→
→
→
Step 4. Input option
Press the operation button
with the direction of remote control for set.
For the correct option setting, you must input the option twice.
Step 5. Check operation
1) Reset the indoor unit by pressing the RESET button of indoor unit or outdoor unit.
2) Take the batteries out of the remote controller and insert them again and then press the operation
button.
4-4
Samsung Electronics
Troubleshooting
4-1-3 Order for Setting Options (Wired Remote Controller)
SEGs for Use
Main Menu
Sub-menu
1 2 3 4
5 6
* GZPVXBOUUPVTFUIFWBSJPVTBEEJUJPOBMGVODUJPOTGPSZPVS8JSFE3FNPUF$POUSPMMFSQSFTTUIF4FUBOE&TDCVUUPOTBUUIF
same time for more than three seconds.
Ź You will enter the additional function settings, and the [main menu] will be displayed.
2. Refer to the list of additional functions for your Wired Remote Controller on the next page, and select the desired menu.
Ź Using the [∧]/[వ] buttons, select a main menu number and press the [౔] button to enter the sub-menu setting screen.
Ź Using the [∧]/[వ] buttons, select a sub-menu number and press the [౔] button to enter data setting screen.
Ź When you enter the setting stage, the current setting will be displayed.
Ź Refer to the chart for data settings.
Ź Using the [∧]/[వ] buttons, select the settings. Press the [౔] button to move to the next setting.
Ź Press the Set button to save the settings and exit to the sub-menu setting screen.
Ź Press the &TD button to exit to normal mode.
t8IJMFTFUUJOHUIFEBUBZPVDBOVTFUIF<౒]/[౔] buttons to set the range of Data bit.
t8IJMFDPOGJHVSJOHUIFTFUUJOHQSFTTUIF&TD button to exit to the setting sub-menu without saving your changes.
Samsung Electronics
4-5
Troubleshooting
4-1-4 Setting an indoor unit installation option (Suitable for the condition of each installation location)
1. Check whether power is supplied or not.
- When the indoor unit is not plugged in, there should be additional power supply
in the indoor unit.
2. The panel(display ) should be connected to an indoor unit to receive option.
3. Set the installation option according to the installation condition of an air conditioner.
- The default setting of an indoor unit installation option is 02000-100000-200000-300000.
- Individual control of a remote controller(SEG20) is the function that controls an indoor unit individually when there is more
than one indoor unit.
4. Set the indoor unit option by wireless remote controller.
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
0
2
RESERVED
Exterior temperature
sensor
Central control
FAN RPM
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
1
Drain pump
RESERVED
RESERVED
Indoor unit at
heating stop
Master / Slave
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
2
External control
External control
output
S-Plasma ion
Buzzer
Number of hours
using filter
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
3
Individual control of
a remote controller
Heating setting
compensation
RESERVED
RESERVED
RESERVED
▶ 1WAY/2WAY/4WAY MODEL : Drain pump(SEG8) will be set to 'USE + 3minute delay' even if the drain pump is set to 0.
▶ 1 WAY/2WAY/4WAY,DUCT MODEL : Number of hours using filter(SEG18) will be set to '1000hour' even if the SEG18 is set to
exept for 2 or 6.
▶ If you input a number other than 0~4 of the individual control of the indoor unit(SEG20), the indoor is set as indoor 1.
▶ 4WAY MODEL : Even when the value of Heating setting compensation(SEG21) is set to '0', it wil be recognized as '5°C'.
4-6
Samsung Electronics
Troubleshooting
Option No. : 02XXXX-1XXXXX-2XXXXX-3XXXXX
Option
SEG1
SEG2
Explanation
PAGE
MODE
SEG3
SEG4
SEG5
SEG6
Use of external
temperature sensor
Use of central control
FAN RPM
Remote
Controller
Display
Indication
Indication
and Details
Details
Indication
0
RESERVED
Details
2
Indication
Details
Indication
Details
0
0
Disuse
0
Disuse
1
1
Use
1
Use
2
nonuse
High ceiling
mode
High purity kit
Noise reduction
operation
mode
3
Option
Explanation
SEG7
SEG8
PAGE
SEG9
Use of drain pump
Remote
Controller
Display
RESERVED
Indication
Details
Indication
and Details
1
Option
SEG13
Explanation
Details
Disuse
Use
Use +
2
3minute
delay
SEG14
SEG11
Indoor unit at heating
stop
Electric modification
diagram
Master / Slave
RESERVED
Indication
0
1
Indication
0
Details Indication
Details
Default
0
slave
Noise
1
master
reduction
1
operation
mode
SEG17
SEG18
SEG16
SEG15
Setting the output of
Use of external control
external control
PAGE
SEG11
SEG10
S-Plasma ion
Buzzer control
Number of hours using filter
Remote
Controller
Display
Indication
Details
Indication
Details
0
Indication
and Details
2
Option
SEG19
Explanation
Disuse
ON/OFF
1
Control
OFF
2
Control
Window
3
ON/OFF
Control
SEG20
Individual control of a
remote controller
PAGE
Indication
0
Details Indication
Thermo
0
on
Operation
on
1
SEG21
Indication
and Details
Details
3
Samsung Electronics
Indication
0 or 1
2
3
4
Indication
Disuse
0
Use
1
1
Details
Use of
buzzer
Non use
of buzzer
Indication
Details
2
1000 Hour
6
2000 Hour
SEG22
SEG23
SEG24
RESERVED
RESERVED
RESERVED
Heating setting
compensation
Remote
Controller
Display
Indication
Details
Details Indication
Indoor 1
0
Indoor 2
1
Indoor 3
2
Indoor 4
Details
Disuse
2°C
5°C
4-7
Troubleshooting
4-1-5 Changing a particular option
You can change each digit of set option.
Option
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
Explanation
PAGE
MODE
The option mode
you want to change
The tens’ digit of an
option SEG you will
change
The unit digit of an
option SEG you will
change
The changed value
Indication
Indication
Indication
Remote
Controller
Display
Indication
Indication
and Details
Details
0
Indication
Details
D
Details
Option
mode
0~F
Details
Tens’ digit
of SEG
0~9
Unit digit
of SEG
Details
Indication
Details
0~9
The
changed
value
0~F
t 8IFODIBOHJOHBEJHJUPGBOJOEPPSVOJUBEESFTTTFUUJOHPQUJPOTFUUIF4&(BTA"
t 8IFODIBOHJOHBEJHJUPGJOEPPSVOJUJOTUBMMBUJPOPQUJPOTFUUIF4&(BTA
&Y
8IFOTFUUJOHUIFhCV[[FSDPOUSPMhJOUPEJTVTFTUBUVT
Option
4-8
SEG1
SEG2
Explanation
PAGE
MODE
Indication
0
D
SEG3
SEG4
SEG5
The option The tens’ digit of The unit digit of
mode you want an option SEG an option SEG
to change
you will change you will change
2
1
7
SEG6
The changed
value
1
Samsung Electronics
Troubleshooting
4-1-6 Option code for each model
Model
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
AC018JN4DCH
0
1
4
0
6
F
1
9
5
0
D
8
Remocon
display
AC024JN4DCH
0
1
4
0
6
F
1
9
5
0
D
8
AC030JN4DCH
0
1
4
0
6
F
1
9
5
0
E
8
AC036JN4DCH
0
1
4
0
6
F
1
9
5
4
3
9
AC042JN4DCH
0
1
4
0
6
F
1
9
5
4
4
A
AC048JN4DCH
0
1
4
0
6
F
1
9
5
4
5
B
Model
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
2
7
3
4
3
B
3
7
0
0
0
5
Remocon
display
AC018JN4DCH
AC024JN4DCH
2
7
4
7
5
0
3
7
0
0
0
5
AC030JN4DCH
2
7
5
A
6
4
3
7
0
0
4
5
AC036JN4DCH
2
7
6
4
7
0
3
7
0
0
4
5
AC042JN4DCH
2
7
7
D
8
C
3
7
0
0
4
5
AC048JN4DCH
2
7
8
C
A
0
3
7
0
0
4
5
Samsung Electronics
4-9
Troubleshooting
4-2 Items to check before diagnostics
4-2-1 Test run mode and View mode
䒲 Display Option Key
KEY
Key Operation
7-segment Display
Press once: Heating test run
BLANK BLANK
Press twice: Defrost test run
BLANK BLANK
K2
Press once: Cooling test run
BLANK BLANK
K3
Reset
K4
View mode
K1
Refer to View mode display
7-segment display
䒲 View mode display
ఐPress the K4 switch to view the information on the system status as follows:
No. of Press
SEG1
SEG2
SEG3
SEG4
Unit
Order frequency
1
Three digits
Two digits
One digit
Hz
2
Current frequency
2
Three digits
Two digits
One digit
Hz
3
Number of indoor units
3
Three digits
Two digits
One digit
Unit
1
Display content
4
Out sensor
4
+/-
Two digits
One digit
ఁ
5
Discharge sensor
5
Three digits
Two digits
One digit
ఁ
6
Eva-Mid sensor
6
+/-
Two digits
One digit
ఁ
7
Cond sensor
7
+/-
Two digits
One digit
ఁ
8
Current
8
Two digits
One digit
First decimal
ఁ
9
Fan RPM
9
Four digits
Three digits
Two digits
rpm
10
Target discharge temperature
A
Three digits
Two digits
One digit
ఁ
11
EEV
B
Three digits
Two digits
One digit
step
12
Total indoor unit capacity
C
Two digits
One digit
Protection control
0: no protection control
1: freezing
2: non-stop defrosting
3: overload
4: discharge
5: under-current
Two digits
-
First decimal
kW
Frequency state
0: Normal
1: Hold
2: Down
3: Up_limit
4: Down_limit
-
One digit
-
-
13
Protection control
D
14
15
Heatproof plate temperature
S/W check
E
F
Ver.1( Long Press once)
Main MICOM version
0: Cooling
1: Heating
Three digits
Year (Hex)
Month (Hex)
Date (Two digits)
Date (One digit)
Ver.2( Short press once after Ver.1)
Inverter MICOM version
Year (Hex)
Month (Hex)
Date (Two digits)
Date (One digit)
Ver.3( Short press once after Ver.2)
E2P version
Year (Hex)
Month (Hex)
Date (Two digits)
Date (One digit)
※ Press the K4 button long (Main MICOM version) ĺ Press once more shortly ĺ Press shortly one more time (E2P version)
4-10
Samsung Electronics
Troubleshooting
Test run mode and view mode (Continued)
䭊 DIP Switch Options
ON
OFF
K5
Set an auto address.
Set a manual address.
K6
Snowdrift prevention control not used.
Snowdrift prevention control used.
K7
K8
K9
Samsung Electronics
K7
K8
ON
ON
Silent control not used
ON
OFF
Silent control used Step_1
OFF
ON
Silent control used Step_2
OFF
OFF
Silent control used Step_3
Auto silent mode
Manual silent mode
4-11
Troubleshooting
&DP.PEF<1PXFS4BWJOH.PEF>
Eco mode lamp: RED
Display
Eco Mode Lamp
Mode
Eco Mode
Eco Mode Exit
4-12
Segment 1
Segment 2
Segment 3
Segment 4
RED
BLANK
BLANK
BLANK
BLANK
On
Press K3 to go out from the eco mode.
At the driving signal or test run (cooling/heating) of the user, the mode is released.
Off
Samsung Electronics
Troubleshooting
4-2-3 Four directions cassette type
Product operation with error
Error Mode
Cause
Operation Defrost Timer
Measures
Filter
Outdoor Outdoor
Indoor Diagnosis
heat
heat
heat
method
exchanger exchanger exchanger
compressor
fan
fan
operation- operation- operationoff
off
off
-
t$IFDLJOEPPSUFNQFSBUVSF
sensor connection.
t$IFDLJOEPPSUFNQFSBUVSF
sensor’s resistance value to
see if it’s short/open.
operation- operation- operationoff
off
off
-
X
Error of heat exchanger
IN/OUT sensor in the
indoor unit (Open/Short)
t$IFDL&7"*/065TFOTPS
connection.
t$IFDL&7"*/065TFOTPST
resistance value to see if it’s
short/open.
operation- operation- operationoff
off
off
-
X
Error of fan motor in the
indoor unit
t$IFDLUIFDPOOFDUJPOPG
motor connector
t$IFDLUIFTQFFEPGUIFNPUPS
fan
operation- operation- operationoff
off
off
-
X
Error of the outdoor
temperature sensor
Error of the condensor
temperature sensor
Error of the discharge
temperature sensor
t$IFDLJOEPPSUFNQFSBUVSF
sensor connection.
t$IFDLJOEPPSUFNQFSBUVSF
sensor’s resistance value to
see if it’s short/open.
operation- operation- operationoff
off
off
-
X
No communication
for 2 minutes between
indoor and outdoor unit
(communication error for
more than 2 minutes)
t$IFDLDPOOFDUJPOCFUXFFO
indoor and outdoor heat
exchangers’ communication
cables
operation- operation- operationoff
off
off
-
X
Error of outdoor unit
t$IFDLFSSPSPDDVSSFEXJUI
outdoor heat exchanger.
t5&3.*/"-#MPDLUIFSNBM
FUSE error.(OPEN)
operation- operation- operationoff
off
off
-
X
Detection of the float
switch
t$IFDLGMPBUTXJUDI
connection.
t$IFDLXIFUIFSUIFESBJOIBT
been filled with water.
operation- operation- operationoff
off
off
-
EEPROM error
EEPROM option error
t$IFDLJGUIFSFJTEBNBHFXJUI
EEPROM component.
t$IFDLUIFJOEPPSNPEFMUP
set the options.
t*OTQFDUJPOGPSNBUDI
between indoor and outdoor
machine models
operation- operation- operationoff
off
off
-
Outdoor valve clogging
error.
t)JHIQSFTTVSFDIFDLWBMWF
clogging.
operation- operation- operationoff
off
off
-
X
X
X
X
X
X
X
X
X
X
X
X
Power reset
X
Error of room temperature
sensor in the indoor unit
(Open/Short)
-
: On
Samsung Electronics
: Blink
X : Off
4-13
Troubleshooting
4-2-4 Wired remote controller
- If an error occurs, (
) icon will be displayed on the wired remote controller.
- Press the Test button to see the error code.
&SSPSNPEF
Contents
Product operation in
error condition
Outdoor unit/
Compressor/Indoor unit
&SSPSUZQF
Indoor unit communication
error
Check the communication cable of indoor unit.
Check the DC output voltage at the communication
terminal.
Operation Off
Communication
error
Duplicated address setting
error
Check address setting of Indoor units.
Operation Off
Communication
error
No response error address from
indoor unit
Check indoor unit's quantity setting in outdoor unit.
Check electriacl connection and setting.
Operation Off
Communication
error
Indoor temperature sensor
(open/short error)
Check indoor unit room temperature sensor.
Check indoor unit PCB connector CN41. (White)
Operation Off
Indoor sensor
error
Indoor unit Eva In sensor
(Open/Short)
Check indoor unit pipe sensor.
Check indoor PCB connector CN41.(White)
Operation Off
Indoor sensor
error
Indoor floating switch
secondary detection
Check indoor unit float sensor.
Check indoor PCB connector CN5. (black)
Operation Off
Self diagnostic
error
Indoor/outdoor
communication error (1 min)
Check the communication connection between indoor
and outdoor units.
Check the power line and communication cable
connection status
Operation Off
Communication
error
Communication error between
indoor/outdoor INVlMAIN
MICOM (1 min)
Check MAIN MICOM .
Check INVERTER MICOM.
-
Communication
error
Check sensor connection status.
Check sensor location.
Check sensor resistance.
Check sensor connection status.
Check sensor location.
Check sensor resistance.
Check sensor connection status.
Check sensor location.
Check sensor resistance.
Operation Off
Outdoor sensor
error
Operation Off
Outdoor sensor
error
Operation Off
Outdoor sensor
error
Detection of Indoor Freezing
(when Comp. Stops)
Check whether the indoor unit air intake is blocked.
Check the operation of the indoor fan.
Operation Off
Protection of Outdoor Overload
(when Comp. Stops)
Check sensor connection status.
Check sensor location.
Check sensor resistance.
Operation Off
Emission temperature
excessively high
No error. (DISCHARGE temperature control)
High pressure blockage error
(Refrigerant completely
Leakage error)
Check whether the outdoor unit service valve is open.
Check the connection of the pipes.
Check the operation of the EEV.
Check for refrigerant leakage. (Completely leakage).
Operation Off
Self diagnostic
error
Heating operation blocked
Check the operation setting state.
Check temperature sensor.
Operation Off
Self diagnostic
error
Cooling operation blocked
Check the operation setting state .
Check temperature senso.
Operation Off
Self diagnostic
error
Operation Off
Self diagnostic
error
Outdoor temperature sensor
error
COND temperature sensor error
[Inverter] Emission temperature
sensor error
Outdoor fan 1 error
[Inverter] Compressor startup
error
[Inverter] Total current error/
PFC over current error
4-14
.FBTVSF
Check input power connection status.
Check the connection status between the motor and
outdoor unit PCB.
Check indoor/outdoor fuse.
Check the compressor connection status.
Check the resistance between difference phases of the
compressor.
Check the input power
Check the coolant charging status
Check the normal operation of outdoor fan
-
Operation Off
Operation Off
Outdoor unit
protection
control error
Outdoor unit
protection
control error
Outdoor unit
protection
control error
Outdoor unit
protection
control error
Outdoor unit
protection
control error
Samsung Electronics
Troubleshooting
Wired remote controller (cont.)
Product operation in
error condition
&SSPSNPEF
Contents
.FBTVSF
OLP Overheat and Comp. Stop
Reconfirm the opening of the service valve.
Check for leaks from the connection part of the pipe and
product or from the pipe joint.
Change the outdoor unit location and direction.
Refill the coolant after checking the leaking part.
Reinstall the outdoor unit set.
Operation Off
Outdoor unit
protection
control error
[Inverter] IPM over current
error
Check coolant charging
Check the compressor connection status and normal
operation
Check the obstacles around the indoor and outdoor units
Check whether the outdoor unit service valve is open
Check whether the indoor/outdoor installation pipe/
wiring are correct
Operation Off
Outdoor unit
protection
control error
Check the compressor connection status
Check the resistance between difference phases of the
compressor
Operation Off
Outdoor unit
protection
control error
Restart in 3 minutes
Outdoor unit
protection
control error
Compressor V limit error
Outdoor unit/
Compressor/Indoor
unit
&SSPSUZQF
DC LINK over/low voltage error
Check input power
Check AC power connection
[Inverter] Compressor rotation
error
Check the compressor connection status
Check the resistance between difference phases of the
compressor
Operation Off
Outdoor unit
protection
control error
[Inverter] Current sensor error
Check EEPROM DATA
Check the normal operation of PCB
Operation Off
Outdoor unit
protection
control error
[Inverter] DC LINK voltage
sensor error
Check the input power connection
Check the status of RY21 and R200 in the INVERTER PCB
Operation Off
Outdoor unit
protection
control error
EEPROM Read/Write error
-
Operation Off
Outdoor unit
protection
control error
Check EEPROM DATA
Check the normal operation of PCB
Operation Off
Outdoor unit
protection
control error
Check the input power status
Operation Off
Outdoor unit
protection
control error
Check the compressor connection status
Check the resistance between difference phases of the
compressor
Operation Off
Outdoor unit
protection
control error
Check the input power connection status
Check the connection status of the motor and the
outdoor unit PCB
Check the indoor/outdoor unit fuse
Operation Off
Self diagnostic
error
Change the location of the outdoor unit if the
temperature is abnormally high when the heatproof
plate is checked.
Reconnect the screws.
Replace the outdoor unit fan.
Replace the PBA of the outdoor unit.
Operation Off
Outdoor unit
protection
control error
Check the coolant charging status
Check the indoor EVA sensor
Check if the outdoor unit service value is open
Check that the indoor/outdoor installation pipe/wiring
are correct
Operation Off
Self diagnostic
error
[Inverter] OTP error
AC ZERO CROSSING SIGNAL
OUT error
Compressor LOCK error
Outdoor fan 2 error
IPM Overheat Error for
Outdoor Unit Inverter Comp.
Gas leak error
Samsung Electronics
4-15
Troubleshooting
Wired remote controller (cont.)
Product operation in
error condition
&SSPSNPEF
Contents
Capacities not matched
4-16
.FBTVSF
Check the option code of the indoor unit
Outdoor unit/
Compressor/Indoor
unit
&SSPSUZQF
Operation Off
Outdoor unit
protection
control error
Communication error between
the indoor unit and wired
remote controller
Check the connection wire between the indoor unit and
the wired remote controller
Normal operation
Wired remote
controller error
Communication error between
the Master and Slave wired
remote controllers
Check the option switch for defining the Master and
Slave (only one Master and one Slave can exist)
Normal operation
Wired remote
controller error
COM1/COM2 cross installation
error
Check that wired remote controller is connected to the
COM2 terminal of the indoor unit
Normal operation
Wired remote
controller error
Wired remote controller COM2
option setting error
Check that Com1, Com2 setting DIP switch is set to Com2
Normal operation
Wired remote
controller error
Samsung Electronics
Troubleshooting
4-3 Troubleshooting by symptoms
4-3-1 Indoor temperature sensor (open/short)
Indoor unit display
X (Operation)
(Defrost) X (Timer) X (Filter)
In case of open or short circuit of indoor temperature sensor
Symptom
Short or leakage of the corresponding sensor
Failure
Is indoor temperature
sensor disconnected from the
connector in PCB?
No
Yes
Restart the system after connecting
to the PCB connector
Remove the indoor temperature sensor
connector from the PCB and measure the
resistance between two terminals
<Temperature sensor
resistance value>
Current
Resistance
temperature
(kΩ)
(°C)
In this case, is the resistance
value out of range in the temperature
table on the right?
No
Restart the system after replacing the PCB
Samsung Electronics
Yes
Indoor temperature sensor
failure (replace)
40
5.800
35
6.900
30
8.300
25
10.00
20
12.10
15
14.70
10
18.00
5
22.00
0
28.30
-5
33.90
-10
42.30
4-17
Troubleshooting
4-3-2 Indoor heat exchanger temperature sensor (open/short)
Indoor unit display
(Operation)
(Defrost) X (Timer) X (Filter)
Short or open circuit of indoor heat exchanger temperature sensor
Symptom
Short or open circuit in the corresponding sensor
Failure
Is the indoor heat exchanger
temperature sensor connector disconnected
from the PCB?
No
Yes
Restart the system after
connecting the connector to PCB
Remove the indoor heat exchanger
temperature sensor connector from
the PCB and measure the resistance
between two terminals
<Temperature sensor
resistance value>
Current
Resistance
temperature
(kΩ)
(°C)
In this case, is the resistance
value out of range in the temperature table
on the right?
No
Restart the system after replacing the PCB
4-18
Yes
Failure of the indoor heat
exchanger temperature sensor
(replace)
40
5.800
35
6.900
30
8.300
25
10.00
20
12.10
15
14.70
10
18.00
5
22.00
0
28.30
-5
33.90
-10
42.30
Samsung Electronics
Troubleshooting
*OEPPS'"/FSSPS
Indoor unit display
X (Operation)
X (Defrost)
(Timer) X (Filter)
Indoor unit fan does not run /Runs at excessive high speed and stops.
Symptom
. Motor connector break away
. Indoor unit FAN does not run : Defective motor or PBA
Failure
During operation or Operation at the beginning :
E154 is displayed.
Is the motor connector(CN73)
disconnected from the PCB?
Yes
Connect the
connector to PCB
No
Yes
Check the normal
operation.
Does the motor rotates when operating?
Ex) Depending on FAN RPM, voltage of
DC 0V~DC 6V is output.
Is the RPM of motor less
than 120?
No
Yes
1
↓
2 3 4
↓
5 6
Motor ᐯ‫׳‬ᐱ :
Is voltage of DC 0V~DC 6V displayed?
No
Check the motor and
replace it.
Samsung Electronics
Check the PCB and
replace it
4-19
Troubleshooting
4-3-4 Communication error after finishing Tracking
Indoor unit display
X (Operation)
(Defrost)
(Timer) X (Filter)
Communication error between the indoor and outdoor unit for two minutes
Symptom
Communication error between the indoor unit and outdoor unit
Failure
No
Is there a response from the indoor PCB?
(LED01 (RED) is not ON)
Check the communication cable and
replace the indoor unit PCB
LED01
Yes
Remove the communication cable
connecting the outdoor unit to indoor unit,
and measure the signal on LINE 2 of the
outdoor unit with a scope
In this case, is the
voltage waveform between the lines square
wave with amplitude over ±0.7V as shown
in the following picture?
No
Check the communication
cable in the outdoor unit PCB
and replace the PCB
Yes
Reconnect the cable connecting
the outdoor unit to the indoor unit
and restart the unit.
If the communication still doesn’t work,
replace the indoor unit PCB.
Good
Bad
+0.7V
-0.7V
4-20
Samsung Electronics
Troubleshooting
4-3-5 Indoor unit float sensor error
Indoor unit display
X (Operation)
X (Defrost)
(Timer)
(Filter)
The indoor unit floating sensor is open and that state is maintained for more than one minute
Symptom
Increase in the drain pan water level due to failure of the indoor unit drain pump,
or float sensor failure
Failure
Error occurs
Remove the floating sensor
connector connected to the indoor unit
PCB and the resistance measured between the
two terminals. Is the resistance ∞?
(open circuit)
No
Reassemble the floating sensor
connector and reset the outdoor unit
power. (Indoor unit power reset is
required)
Yes
Same error occurs again
No
Is the water level in the drain pan high?
Yes
Yes
No
Replace the indoor unit PCB
Reset the indoor unit power and
check the operation of the drain pump.
(it vibrates when operating)
Normal operation
Does drain pump operate
when compressor operates?
No
Drain pump PCB
Is the terminal voltage around
AC 220V?
Yes
Is the water level in
drain pan decreasing?
Yes
Replace the floating sensor
when it fails and reset the
indoor unit power
No
Yes
No
Replace the drain pump
Replace the indoor unit PCB
Normal operation
Replace the drain pump
Samsung Electronics
t 'MPBUTFOTPSFSSPSJTDMFBSFEPOMZ
when the indoor power is reset
4-21
Troubleshooting
&&130.DJSDVJUGBJMVSF
Indoor unit display
Symptom
Failure
(Operation)
(Defrost)
(Timer) X (Filter)
EEPROM circuit failure
EEPROM component failure, EEPROM circuit parts missing/damaged/soldering failure
Power on.
E162 occurs.
Are EEPROM SUM PBA correctly assembled?
No
Reassemble EEPROM PBA.
Yes
Is there a problem
in soldering failure or short of between EEPROM
PIN?
No
Remove short or soldering failure.
Yes
Replace EEPROM PBA.
4-22
Samsung Electronics
Troubleshooting
5IFSNBM'VTF0QFO&SSPS
Indoor unit display
Symptom
X (Operation)
(Defrost)
(Timer)
(Filter)
Thermal Fuse Open Error
Check the connection of the CN140 wire.
Check the connection of the terminal block.
(Temperature rise by untightening a screw/ Termal Fuse open
Failure
E198 occurs.
Is the CN140 connector of
PCB between wire correctly
connected?
Yes
Re-operation after the connector.
No
Measure both ends of connector
connected the TERMINAL BLOCK.
Paragraph (Short) Has the connector ends?
No
Replace the MAIN PBA.
Samsung Electronics
4-23
Troubleshooting
8IFOUIFPVUEPPSVOJUQPXFSJTOPU0/o*OJUJBM%JBHOPTJTQIBTFQSPEVDUT
1. Test Item
1) Check the power supply of the outdoor unit.
2) Check the whole connection part of the power supply.
3) Check the power on the indoor unit.
4) Check the connection of the power supply of the terminal block.
5) Check the connection of the power supply between the Main‫׳‬EMI PBA of the outdoor unit.
6) Connect the power supply. (Never forget to turn off the power of the terminal box).
7) Check the power supply parts. (Check after turning off the power of the terminal box!)
8) Check everything is normal after separating the fan motor connector and resetting the power.
(Separate the connector after turning off the power of the terminal box!
When detaching and attaching the connector during power supply, the motor can be damaged.)
∙ 7-segment off.
∙ Conduct the following test if the mode is not
eco mode (power saving mode):
2. Check procedure
30 seconds after turning off the main power
switch (breaker or power socket),
turn on the power.
Check the power supply of
the outdoor unit.
1. Is the line voltage 380 Vac? (Yes)
L1(R)‫׳‬L2(S), L2(S)‫׳‬L3(T), L1(R) ‫׳‬L3(T)
2. Is the phase voltage to the neutral
line 220 Vac?
(Yes) L1(R)/L2(S)/L3(T)‫׳‬N
No
Check all power supply connections.
1. Check the power of the terminal box, 3-phase
electric power, and wire assembling.
2. If the connection is made in the power lines
(extension of the power line), check whether
the lines are firmly connected.
3. Check the circuit breaker due to over-current,
or leakage. Check whether several units are
connected to one breaker.
Yes
Check the power to the indoor unit.
1. Is the line voltage 220 Vac?
(Yes) 1(L)‫׳‬2(N)
No
Check the connection of the power line of the
terminal block.
1. Check wires are correctly connected by
referring to the electrical circuit.
Yes
Check the connection of
the power supply between Main‫׳‬EMI PBA.
1. Is there a fault in the connection
of the power supply to Main PBA
and EMI PBA?
No
Connect the power line
(First turn off the power of the terminal box!)
1. Connect the power supply.
2. Turn on the terminal box and check whether
normal power is supplied to the outdoor unit.
Yes
Continued
4-24
Samsung Electronics
Troubleshooting
8IFOUIFPVUEPPSVOJUQPXFSJTOPU0/o*OJUJBM%JBHOPTJTQIBTFQSPEVDUT(Continued)
Continued
Check the power parts.
(Switch off power to the terminal
box before inspection!)
1. Is there a fault with a fuse??
(Short-Normal, Open-Fault)
2. When the bridge diode is measured with +, (output voltage), does the voltage exceed 290 Vdc?
3. Is the power supply voltage 12V?
4. Is there a fault with a fuse of EMI PBA?
(Short-Normal, Open-Fault)
No
Outdoor main PBA checking part
After replacing the main PBA and resetting the
power, check everything is normal.
Outdoor EMI PBA checking part
Fuse
12V power
Bridge Diode
EMI PBA Fuse
Yes
Fuse
Fan Motor Connector
After separating and resetting
the power, check everything is normal.
(Separate the connector after turning off the
power of the terminal box!
When detaching and attaching the connector
during power supply,
the motor can be damaged.)͑
‫͑ױ‬If it is normal,
replace the fan motor.
No
Connect the power supply.
(Switch off power to the terminal box!)
1. Connect the power supply.
2. Check whether the power of the outdoor unit
is supplied by powering on the terminal box.
Outdoor inverter PBA checking part
Fan Motor
Connector
Samsung Electronics
4-25
Troubleshooting
8IFOUIFPVUEPPSVOJUQPXFSJTOPU0/o*OJUJBM%JBHOPTJT4JOHMFQIBTFQSPEVDU
1. Test Item
1) Check the power supply to the outdoor unit.
2) Check the whole connection part of the power supply.
3) Check the power to the indoor unit.
4) Check the connection of the power supply to the terminal block
5) Check the connection of the power supply between the Main‫׳‬EMI PBA of the outdoor unit
∙ 7-segment off.
(RC072DHXB6 excluded).
∙ Conduct the following test if the mode
6) Connect the power supply. (Never forget to turn off the power of the terminal box).
is not eco mode (power saving mode):
7) Check the power supply parts. (Check after turning off the power to the terminal box!)
8) Check everything is normal after separating the fan motor connector and resetting the power.
(Separate the connector after turning off the power to the terminal box! When detaching and attaching the connector during power supply, the
motor can be damaged.)
2. Check procedure
30 seconds after turning off the main power
switch (breaker or power socket),
turn on the power.
Check the whole connection part of the power
supply.
1. Check the power of the terminal box, 3-phase
electric power, and wire assembling.
Check the power supply of the outdoor unit.
1. Is the line voltage 220 Vac? (Yes) L‫׳‬N
No
2. If the connection is made in the power lines
(extension of the power line), check whether the
lines are firmly connected.
3. Check the circuit breaker due to over-current,
or leakage. Check whether several units are
connected to one breaker.
Yes
RC090/100/125/140/1456HXE6,
RC100DHXB6
Check the power to the indoor unit.
1. Is the line voltage 220 Vac? (Yes) 1(L)‫׳‬2(N)
Yes
Check the connection
of the power supply between Main‫׳‬EMI PBA.
1. Is there a fault in the connection of the
power supply to Main PBA
and EMI PBA?
RC072DHXB6
No
RC090/100/125/140/1456HXE6,
RC100DHXB6
No
Check the connection of the power supply to the
terminal block
1. Check wires are correctly connected by
referring to the electrical circuit.
RC072DHXB6
Connect the power supply.
(Power off the terminal box!)
1. Connect the power supply.
2. Check whether the power of the outdoor unit
is supplied by powering on the terminal box.
Yes
RC072DHXB6 Series ignored
Continued
4-26
Samsung Electronics
Troubleshooting
8IFOUIFPVUEPPSVOJUQPXFSJTOPU0/o*OJUJBM%JBHOPTJT4JOHMFQIBTFQSPEVDU (Continued)
Continued
Check the power parts.
(Switch off power to
the terminal box before inspection!)
1. Is there a fault with a fuse??
(Short-Normal, Open-Fault)
2. When the bridge diode is measured with +, (output voltage), does the voltage exceed
290 Vdc?
3. Is the power supply voltage 12V?
4. Is there a fault with a fuse of EMI PBA?
(Short-Normal,
Open-Fault)
No
After replacing the main PBA and resetting
the power, check everything is normal.
Outdoor EMI PBA checking part
Outdoor main PBA checking part
EMI PBA Fuse
Fuse
12V power
Bridge Diode
Fuse
Yes
Indoor control PBA checking part
Display PBA checking part
Bridge Diode (back)
12V power
Front Fuse
[RC072DHXB6]
Fan Motor Connector
After separating and resetting
the power, check everything is normal.
(Separate the connector after turning off the
power to the terminal box!
When detaching and attaching the connector
during power supply, the motor can be
damaged.) ‫ ױ‬If it is normal,
replace the fan motor.
No
Outdoor inverter PBA
checking part
Connect the power supply.
(Switch off power to the terminal box!)
1. Connect the power supply.
2. Check whether the power of the outdoor unit
is supplied by powering on the terminal box.
Indoor control PBA checking part
Fan Motor
Connector
[RC090/100/125/140/1456HXE6,
RC100DHXB6]
Samsung Electronics
[RC072DHXB6]
4-27
Troubleshooting
*OEPPSPVUEPPSDPNNVOJDBUJPOFSSPSNJO
&SSPS$PEF&
1. Test Item
1) Check the communication and power connection.
2) Check the communication connector connection.
- RC072DHXB* : Outdoor Unit Inverter PBA CN301
- RC090/100/125/140/145*HX**, AC***FCA*** : Outdoor Unit Main PBA CN31
3) Check the communication circuit on the PBA.
2. Check procedure
30 seconds after power off, power on.
No
End the service.
Does the communication error occur??
Check the communication and power
connections.
1. Are the communication connections correctly
assembled as F1: Red, and F2: Blue?
2. Is the communication between the indoor unit
and the outdoor unit correctly connected?
3. Are the power connections (1(L), 2(N)) and the
communication connections (F1, F2) correctly
connected?
4. Are the power connections (1(L), 2(N)) correctly
assembled? (Refer to the circuit diagram, and
the power failure as explained above.)
Yes
No
Are the power and communication
correctly connected?
Yes
Check the connection of
the communication connector (CN31)
of the main PBA.
[RC6666HXG6,
RC145DHXH6,
AC100FCA6GH Series]
1. Is the communication between the indoor unit
and the outdoor unit correctly connected?
2. Are the power connections (1(L), 2(N)) and the
communication connections (F1, F2) correctly connected?
3. Are the power connections (1(L), 2(N))
correctly assembled? (Refer to the circuit
diagram, and the power failure as
explained above.)
No
Yes
Fault checking part
Continued
4-28
No
Communication IC
[RC072DHXB6]
Reconnect the communication connector.
[RC090/100/125/140/1456HXVV,
AC666FCA666]
Check the communication
circuit of the main PBA of the outdoor unit.
1. Is there a problem in communication IC?
2. Is there a fault in TVS-Diode?
Yes
[RC090/100/125/1406HXE6,
RC1006HXB6,
AC666FCA*EH]
[RC072DHXB6]
Replace the main PBA of the outdoor unit.
Communication
IC
TVS-Diode
TVS-Diode
[RC090/100/125/140/1456HX66,
AC666FCA666]
[RC072DHXB6]
Samsung Electronics
Troubleshooting
Indoor/outdoor communication error (1 min.)
(&SSPS$PEF&) (Continued)
Continued
Yes
Check the communication circuit of the main
PBA of the outdoor unit.
1. Is there a problem in communication IC?
2. Is there a fault in TVS-Diode?
Measuring Part
Communication IC Measuring Part
(Circuit Diagram)
Example of Measuring
Communication IC
Example of Measuring
TVS-Diode
Communication B (#7)
Communication A
(#6)
Location
Measuring
Point
#5-GND, #6- Communication A, #7Communication B, #8-Vcc
#6 - #5
#7 - #5
#8 - #5
Steady-state Measuring Value
COM 1(RED)
0.9kΩ ~ 1.2kΩ
0.9kΩ ~ 1.2kΩ
4.7Vdc ~ 5.3Vdc
TVS-Diode Measuring
Both ends of diode
Steady-state Measuring Value
1kΩ or above
Communication IC Measuring (Port)
Samsung Electronics
Remark
Measuring after separating the communication
connection
4-29
Troubleshooting
$PNNVOJDBUJPOFSSPSCFUXFFOPVUEPPSVOJU*/7‫׳‬."*/.*$0.NJO
&SSPS$PEF&
1. Test Item
1) Is the power of the outdoor unit inverter PBA on?
2) Check the power connection and fuse.
3) Is there a problem in the communication connections between the outdoor unit inverter (CN31) and main PBA (CN39)?
(RC072DHXB6 excluded)
4) Check the communication connections.
2. Check procedure
30 seconds after power off, power on.
No
Does the communication error occur??
Yes (In case of RC072DHXB6 excluded, replace the PBA, After
resetting the power, reconfirm and then close.)
Add next to Yes
No
Is the power of the inverter PBA on?
[Check of LED of Inverter PBA]
End the service.
Check the power connection and fuse.
1. Is there a problem in the power connection between
main PBA and the EMI PBA of the outdoor unit?
2. Is there a problem in power connection between the
inverter and the EMI PBA of the outdoor unit?
3. Is the fuse (FUSE100) of the inverter PBA of the outdoor
unit normal? (Short-Normal, Open-Fault, limited to
RC6666HXG6, RC145DHXH6, AC100FCA6GH)
[RC6666HXG6, RC145DHXH6, AC100FCA6GH Confirmation Matters]
1
2
2
3
Yes
[RC666HXE6, RC100DHXB6, AC666FCA6EH Confirmation Matters]
Is there a problem
in the connections of communications
between the outdoor unit inverter (CN31)
and main PBA (CN39)?
No
Check the communication connections.
[RC6666HXG6, RC145DHXH6, AC100FCA6GH Confirmation Matters]
1
Yes
Replace the outdoor unit inverter or main PBA.
1. If E203 Error to 7-segment of the main PBA of the outdoor unit is displayed, replace
the inverter PBA and then the main PBA of the outdoor unit is normal.
2. If Red – ON, Green – OFF, and YELLOW – Blink are displayed in the LED display of the
outdoor unit inverter, and there is no indication in 7-segment of the main PBA of the
outdoor unit, replace the main PBA ‫ ױ‬The outdoor unit inverter PBA is normal.
Inverter PBA connecting part
(CN31)
2
Main PBA connecting part
(CN39)
[RC6666HXE6, RC100DHXB6, AC666FCA6EH Confirmation Matters]
Inverter PBA connecting part
(CN31)
Main PBA connecting part
(CN39)
[Main PBA 7-segment
confirming part (Common)]
4-30
[RC6666HXG6, RC145DHXH6,
AC100FCA6GH Inverter PBA LED
confirming part ]
[RC6666HX6, RC100DHXB6,
AC666FCA6EH Inverter PBA LED
confirming part]
Samsung Electronics
Troubleshooting
&YUFSOBM4FOTPS&SSPS&SSPS$PEF&&&&
1. Test Item
1) Check the connection of the temperature sensor connector.
2) Check the resistance value of the temperature sensor.
Error Code
E221
E231
E251
E320
Description
Error of the temperature sensor of the outdoor unit
Error of the COND. sensor of the outdoor unit
Error of the discharge sensor of the outdoor unit
Error of the OLP sensor of the outdoor unit
2. Check procedure
Power OFF
Is the temperature sensor connector
connected?
Is the temperature sensor connector
reconnected?
No
Check the connection of CN43.
Check the connection of
CN501 and CN502.
Yes
[RC090/100/125/140/14566666,
AC666FCA666]
Is the temperature
sensor-measuring resistance similar to the
table on the left?
[RC072DHXB6]
Replace the temperature sensor, ‫ױ‬
Power ON. ‫ױ‬
After confirming the state is normal, end the service.
No
Discharge sensor: 200kΩ at 25°C
Outdoor unit temperature sensor:
10kΩ at 25°C
OLP sensor: 200kΩ at 25ఁ
Discharge sensor: 200kΩ at 25ఁ
COND. sensor: 10kΩ at 25ఁ
Outdoor unit temperature sensor:
10kΩ at 25ఁ
COND. sensor: 10kΩ at 25°C
OLP sensor: 200kΩ at 25°C
[RC090/100/125/140/14566666,
AC666FCA666]
[RC072DHXB6]
(Example) COND. sensor/outdoor unit temperature sensor measuring resistance value by temperature: E231, E221
Current
temperature
(°C)
70
60
50
40
30
Yes
Resistance
(KΩ)
4
5
6
7
8
Current
temperature
(°C)
20
10
0
-10
Resistance
(KΩ)
e.g.) Room temperature: 26ఁ
- Resistance: 10.28 KΩ
10
20
30
40
(Example) OLP sensor/discharge temperature sensor measuring resistance value by temperature: E320, E251.
Current
temperature Resistance
(KΩ)
(°C)
80
40
70
50
60
60
50
90
40
110
Does the same error occur again
after power is on?
No
Current
temperature
(°C)
30
20
10
0
Resistance
(KΩ)
e.g.) Room temperature: 21ఁ͑
- Resistance: 205.4 KΩ
180
220
320
550
After confirming the state is normal,
end the service.
Yes
Replace the outdoor unit PBA. ‫ױ‬
Power is on. ‫ ױ‬After confirming the state is
normal, end the service.
Samsung Electronics
4-31
Troubleshooting
0VUEPPS6OJU'BO&SSPS
&SSPS$PEF&&
1. Test Item
1) Check the connection of fan connectors (CN90, CN91). [In case of RC072DHXB6, CN901]
2) Check the voltage of the fan motor connector in the inverter PBA of the outdoor unit.
3) Check the power supply of the inverter PBA of the outdoor unit.
4) Check the single fan motor. (Do not forget to separate the motor connector 30 seconds after power off!)
2. Check procedure
Check after power OFF!
Check the connection
of the fan connectors (CN90, CN91 or CN901).
1. Is the outdoor fan connector correctly connected?
2. Are the wires of the external fan
connector correctly connected?
No
Connect the fan corrector (CN90, CN91 or CN901)
correctly. ‫ ױ‬Power is on. ‫ ױ‬After confirming the
state is normal, end the service.
Yes
Connect the connections of
the outdoor unit which has
two outdoor fans.
Check the voltage
of the fan connector to
the inverter PBA of the outdoor unit.
‫ ױ‬After power is ON,
check the voltage between connector pins.
1. Is the DC_Link voltage correct?
(Normal: 280Vdc ≤ DC_Link voltage ≤ 360Vdc)
2. Is the fan control voltage correct?
(Normal: 14Vdc ≤ FAN control voltage ≤ 16Vdc)
3. Is the fan command voltage?
(Normal: 2Vdc ≤
FAN command voltage
≤ 5Vdc)
Connect the connections of
the outdoor unit which has
one outdoor fan.
[RC090/100/125/140/14566666
AC666FCA666]
No
Check the power supply of the inverter PBA of the outdoor unit.
1. Check by referring to When the outdoor unit power is not ON –
Initial Diagnosis.͑‫ ױ‬Check everything is normal after replacing
the PBA at the fault in the inverter PBA.͑‫ ױ‬End the service.
#1-#3 DC_Link Voltage (between DC_link and GND)
#4-#3 DC_Link voltage (between DC15V and GND)
#5-#3 FAN command voltage (between fan control and GND)
Yes
Measuring Part
Check the single fan motor.
(30 seconds after power is off,
1. Are the resistance values between pins of
the fan motor connector similar to those
in the following table?
[RC072DHXB6]
No
Motor Connector
280Vdc ~ 360Vdc
14Vdc ~ 16Vdc
2Vdc ~ 5Vdc
Diagnosing Part
#5(YEL)-#3(BLK) resistance
(between fan control and GND)
#4(WHT)-#3(BLK) resistance
(between DC15V and GND)
#5(YEL)-#3(BLK) resistance
(between fan control and GND)
#6(BLU)-#3(BLK) resistance
(between feedback and GND)
Value of good product
Open (infinite resistance)
Approx. 1.0kΩ ~ 3kΩ
Approx. 230kΩ ~ 280kΩ
some MΩ or more or open
(infinite resistance value)
Yes
After power is on, check everything is normal.
‫ ױ‬End the service.
ఐ At least 30 seconds after power is OFF, attach/detach the fan motor connector! ‫ ױ‬Threatened to cause secondary damage to the motor and the PBA.
ఐ Check the single inverter PBA or fan motor and only if there is a fault, replace!
ఐ Do not replace the main PBA of the outdoor unit relating to the fault in the fan motor!
ఐ If the error is indicated on 7-segment of the main PBA of the outdoor unit, the main PBA of the outdoor unit has no fault.
ఐ In case of a control problem, it is possible to solve with S/W update.
4-32
Samsung Electronics
Troubleshooting
&SSPSPG$PNQSFTTPS4UBSUVQBOE3PUBUJPO
&SSPS$PEF&&
1. Test Item
1) Check the power supply / Check the restart-up after power is reset.
2) Check the compressor and the state of the compressor wire assembling.
3) Check the fault of the single compressor wire.
2. Check procedure
30 seconds after power off, power on.
Check power. /
Check the restart-up after power is reset.
1. Is there any problem in input power?
(Single-phase: 220Vac, 3-phase: 380Vac)
2. Does the error occur again after power rest?
No
End the service.
Yes
Check the compressor
and the state
of the compressor wire assembling.
1. Do the inter-phase resistance values of
the compressor coincide?
(U ‫ ׳‬V, U ‫ ׳‬W, V ‫ ׳‬W)
2. Are the wires on the compressor correctly connected?
(Non-connection, wrong connection)
3. Is there abnormal noise
in the rotation of the compressor?
No
1. Compressor replacement: If the inter-phase
resistance values of the compressor are
different. ‫ ױ‬Power is on.͑‫͑ױ‬Check the
normal startup.͑‫͑ױ‬End the service.
2. Wire reassembling: If there is a fault in the
connection of the wires of the compressor
͑‫͑ױ‬Power is on.͑‫͑ױ‬Check the normal startup. ͑
‫͑ױ‬End the service.
3. Compressor replacement: Serious abnormal
noise (Metallic scraping or grinding noise),
serious vibration
Yes
s the resistance between
the compressor body and the chassis
Mega Ω?
No
Replace the compressor.
Yes
Continued
Samsung Electronics
4-33
Troubleshooting
&SSPSPG$PNQSFTTPS4UBSUVQBOE3PUBUJPO
&SSPS$PEF&&
(Continued)
Continued
Yes
1. Are the wires of the compressor
correctly assembled in colors:
U: RED, V: BLU, and W: YEL?
‫ ױ‬Check for disconnections of PBA and COMP.
2. Is the terminal in the compressor wire
housing firmly assembled?
3. Is there any fault of part of
the compressor wires in deviation
or secession?
No
Yes
1. Replace the compressor wire. ‫ ױ‬Power is on. ‫ױ‬
Check normal startup. ‫ ױ‬End the service.
2. Replace the compressor wire. ‫ ױ‬Power is on. ‫ױ‬
Check normal startup. ‫ ױ‬End the service.
W
V
U
W
V
: After replacing the inverter PBA of the
outdoor unit, check normal startup.
‫ ױ‬End the service.
ఐ͑͑E461, E467 Error-related, EMI / outdoor unit Main / Indoor unit Main PBA do not replace!
ĺ This error is related to the compressor and Inverter PBA. (Not related to the above PBA)
ఐ͑Because it is an error regarding the inverter PBA, it is not related to the aforementioned PBA.
ఐ͑Ensure that the service valve is open!
ఐ͑͑While the service valve is closed and the COMP. starts, it is possible to cause a fault due to
differential pressure.
U
[RC6666HXG6,
RC6666HXH6,
AC100FCA6GH]
[RC090/100/125/140/14566666,
AC666FCA666]
V
W
W
V
U
U
PBA connecting connector
COMP connecting connector
[RC072DHXB6]
4-34
Samsung Electronics
Troubleshooting
&SSPSPGVOEFSDVSSFOUFSSPS1'$PWFSDVSSFOU
&SSPS$PEF&&
1. Test Item
1) Check the power supply. / Check the re-startup after the power is reset.
2) Check the outdoor unit installation environment.
‫ ױ‬Check the disconnection of the wires regarding the inverter PBA of
the outdoor unit and check the installation environment.
3) Check the indoor unit installation environment.
4) Check the opening of the service valve.
Error Code
E462
E484
Description
Error of the outdoor unit
under-current
Error of the outdoor unit
PFC over-current
Model
RC6666HX66,
AC666FCA666
Limited to RC6666HXE6,
RC6666HXB6,
AC666FCA*EH
2. Check procedure
30 seconds after power off, power on.
Has the outdoor unit been correctly installed?
Yes
No
Check the outdoor unit installation environment.
‫ ױ‬Check everything is normal at re-start.
‫͑ױ‬End the service.
1. Check for wire disconnection of the inverter
PBA of the outdoor unit.
2. Remove the obstacles of the inlet of the
outdoor unit and secure the space.
3. Remove the obstacles of the outlet of the
outdoor unit and secure the space.
[RC6666HXG6, RC6666HXH6, AC100FCA6GH:
Checking wire disconnection]
[RC090/100/125/1406HXE6, RC100DHXB6,
AC666FCA6EH: Checking wire disconnection]
[RC072DHXB6: Checking wire disconnection]
Has the indoor unit been correctly installed?
No
Yes
Has the service valve been completely open?
No
Check the indoor unit installation
environment. ‫ ױ‬Check everything is normal at
re-start. ‫͑ױ‬End the service.
1. Remove the obstacles of the inlet and
secure the space.
2. Remove the obstacles of the outlet and
secure the space.
Open the valve.
Yes
Does the compressor work correctly?
No
Replace the compressor.
Yes
After replacing the inverter PBA of the outdoor unit, check
normal startup. ‫͑ױ‬End the service.
Samsung Electronics
4-35
Troubleshooting
*1.0WFSDVSSFOU&SSPS
&SSPS$PEF&
1. Test Item
1) Check the power supply. / Check the re-startup after the power is reset.
2) Check the outdoor unit installation environment.
‫ ױ‬Check the disconnection of the wires regarding the inverter PBA of the outdoor unit and check the installation environment.
‫ ױ‬At the site where several units were installed at the same time, check whether communication connections and pipes have been wrongly connected!
3) Check the indoor unit installation environment.
4) Check the opening of the service valve.
5) Check the compressor and the state of the compressor wire assembling.
6) Check for fault of the single compressor wire.
2. Check procedure
30 seconds after power off, power on.
No
Has the outdoor unit been correctly installed?
Check the outdoor unit installation
environment. ‫ ױ‬Check everything is normal at
re-start͑͟‫͑ױ‬End the service.
1. Check the wire disconnection of the inverter
PBA of the outdoor unit.
2. Remove the obstacles of the suction pipes
of the outdoor unit and secure the space.
[RC6666HXG6, RC6666HXH6, AC100FCA6GH:
Checking wire disconnection]
[RC090/100/125/1406HXE6, RC100DHXB6,
AC666FCA6EH: Checking wire disconnection]
Yes
[RC072DHXB6: Checking wire disconnection]
Has the indoor unit been correctly installed?
No
Yes
Have the pipes and wires of indoor and
outdoor units been correctly installed?
Check the indoor unit installation
environment.͑‫ ױ‬Check everything is
normal at re-start. ‫͑ױ‬End the service.
1. Remove the obstacles of the inlet and
secure the space.
2. Remove the obstacles of the outlet and
secure the space.
No
Re-install correctly under the product
specifications.
Yes
Continued
ᐭ
ᐮ
ᐯ
Pipe
Wire
4-36
Poor installation
Samsung Electronics
Troubleshooting
*1.0WFSDVSSFOU&SSPS
&SSPS$PEF&
(Continued)
Continued
Has the service valve been completely
opened?
No
Are the connections of the compressor
correctly connected with the compressor?
No
Open the valve.
Check the state of the connection
of the compressor.
Yes
Check the compressor.
1. Do the inter-phase resistance values of the
compressor coincide?
(U ‫ ׳‬V, U ‫ ׳‬W, V ‫ ׳‬W)
2. Are the wires on the compressor correctly
connected? (Non-connection, wrong
connection)
3. Is there abnormal noise in the
rotation of the compressor?
No
1. Compressor replacement: If the interphase
resistance values of the compressor are
different. ‫ ױ‬Power is on.‫ ױ‬Check the
normal startup. ‫ ױ‬End the service.
2. Wire reassembling: If there is a fault in the
connection of the wires of the compressor
‫ױ‬Power is on. ‫ ױ‬Check the normal startup.
‫ ױ‬End the service.
3. Compressor replacement: Serious abnormal
noise (Metallic scraping or grinding noise),
serious vibration
Yes
Is the resistance between the compressor
body and the chassis Mega Ω?
No
Replace the compressor.
Yes
Are the position and measuring value of
the temperature sensor normal?
No
After power is off,
correct or replace the sensor position.
Yes
Continued
Samsung Electronics
4-37
Troubleshooting
*1.0WFSDVSSFOU&SSPS
&SSPS$PEF&
(Continued)
Continued
Yes
Check the compressor wires.
1. Are the wires of the compressor correctly
assembled in colors: U: RED, V: BLU, and W: YEL?
‫ ױ‬Check the disconnections of PBA and COMP.
2. Is the terminal in the compressor wire housing
firmly assembled?
3. Is there a fault of part of the compressor
wires in deviation or secession?
No
Yes
Replace the PCB.
1. Replace the compressor wire. ‫ ͑ױ‬Power is on.
‫͑ױ‬Check normal startup. ‫ ͑ױ‬End the service.
2. Replace the compressor wire. ‫ ͑ױ‬Power is on.
‫͑ױ‬Check normal startup. ‫ ͑ױ‬End the service.
3. Replace the compressor wire. ‫ ױ‬Power is on.
‫ ױ‬Check normal startup ‫ ױ‬End the service.
W
V
U
W
V
U
ఐ͑͑E464 Error-related, EMI / outdoor unit Main / Indoor unit Main PBA do not
replace! ĺ This error is related to the compressor and Inverter PBA.
(Not related to the above PBA)
[RC6666HXG6,
RC6666HXH6,
AC100FCA6GH]
W
[RC090/100/125/140/1456HX66,
AC666FCA666]
V
W
V
U
U
PBA connecting connector
COMP connecting
connector
[RC072DHXB6 Series]
4-38
Samsung Electronics
Troubleshooting
%$-*/,0WFSDVSSFOUBOE-PXWPMUBHF&SSPS
&SSPS$PEF&
1. Test Item
1) Check the power supply. / Check the re-startup after the power is reset. ‫͑ױ‬Is there a fault in input power?
‫͑ױ‬Does the error occur again at operation after power is reset?
2) Check the connection of the power, and check whether the jointed power connection exists.
3) Check the reactor and its connecting wires.
4) Check the fuses of EMI PBA.
5) Check the terminal block and power terminal box and the wire assembly.
2. Check procedure
Power OFF
Is the power cable correctly connected?
No
Reconnect the power cable.
[RC6666HXG6, RC145DHXH6, AC100FCA6GH Series Confirmation Matters]
Yes
[RC6666HXE6, RC100DHXB6, AC666FCA666Common:
Fault in connection of the jointed power cable]
Check the reactor and its
connecting wires.
1. Is the wire between the reactor and the inverter
PBA of the outdoor unit correctly connected?
2. Is there any fault such as scratch, or pressing of
the reactor or broken or
loosened terminal?
No
1. Connect the Wire normally (Reactor and
the outdoor unit Inverter PBA) ĺ
Check the normal operation ĺ
Shut down the service
2. Replace the reactor ĺ
Check the normal operation ĺ
Shut down the service
[RC6666HXG6, RC145DHXH6, AC100FCA6GH Confirmation Matters]
[RC090/100/125/1406HXE6, RC1006HXB6, AC666FCA6EH
Confirmation Matters]
Yes
[RC072DHXB6 Confirmation Matters]
Continued
Samsung Electronics
4-39
Troubleshooting
%$-*/,0WFSDVSSFOU-PX7PMUBHF&SSPS
&SSPS$PEF&
Continued
Yes
Is the fuse of the EMI PBA disconnected?
Yes
Replace the fuse.
[RC6666HXG6, RC6666HXH6,
AC100FCA6GH]
[RC090/100/125/1406HXE6,
RC1006HXB6, AC666FCA6EH]
Yes
(Short-Normal, Open-Fault)
[RC072DHXB6]
Check the terminal block and
the power terminal box.
1. Is the screw of the terminal block firmly assembled?
2. Are the power cable of the power terminal
box and the terminal firmly
assembled?
Yes
1. Connect the screws of the terminal block
with the power cable. ‫ױ‬Check normal
startup. ‫ ױ‬End the service.
2. Connect the terminal of the power terminal
box and the power cable. ‫ ױ‬Check normal
startup. ‫ ױ‬End the service.
No
After replacing the inverter PBA of
the outdoor unit, check normal startup.
‫ ױ‬End the service.
4-40
Samsung Electronics
Troubleshooting
(BT-FBLBHF&SSPS&SSPS$PEF&
1. Test Item
1) Check the power supply. / Check the re-startup after the power is reset. ‫ ױ‬Is there a fault in input power?
‫͑ױ‬Does the error occur again at operation after power is reset?
2) Check the compressor and the state of the compressor wire assembling.
3) Check the outdoor unit installation environment. ‫͑ױ‬Check for disconnection of the wires regarding the inverter PBA of the outdoor unit and
check the installation environment. ‫͑ױ‬At the site where several units were installed at the same time, check whether communication connections
and pipes have been wrongly connected!
2. Check procedure
30 seconds after power off, power on.
Did the error occur?
No
End the service.
Yes
Check the compressor
and the state of the compressor
wire assembling.
1. Do the inter-phase resistance values of
the compressor coincide?
(U ‫ ׳‬V, U ‫ ׳‬W, V ‫ ׳‬W)
2. Are the wires on the compressor correctly
connected? (Non-connection, wrong
connection)
3. Is there abnormal noise in
the rotation of the
compressor?
No
1. Compressor replacement: If the interphase
resistance values of the compressor are
different.͑‫ ױ‬Power is on. ͑‫ ױ‬Check the
normal startup. ͑‫ ױ‬End the service.
2. Wire reassembling: If there is any fault in the
connection of the wires of the compressor
͑‫ ױ‬Power is on. ͑‫ ױ‬Check the normal
startup. ͑‫ ױ‬End the service.
3. Compressor replacement: Serious abnormal
noise (Metallic scraping or grinding noise),
serious vibration
Yes
Have the pipes and wires of indoor and
outdoor units been correctly installed?
Re-install correctly under
the product specifications.
No
Yes
ᐭ
Continued
Samsung Electronics
Pipe
ᐮ
ᐯ
Poor installation
Wire
4-41
Troubleshooting
(BT-FBLBHF&SSPS&SSPS$PEF& ) (Continued)
Continued
Yes
Has the service valve been completely
opened?
No
Open the valve.
Yes
Is the indoor EVA sensor correctly connected?
No
Re-connect the sensor connector.
Yes
Has the refrigerant been charged?
No
Charge the refrigerant.
Yes
Replace the inverter PCB.
4-42
Samsung Electronics
Troubleshooting
1JQF#MPDLJOH&SSPS&SSPS$PEF&
1. Test Item
1) Check the open state of the outdoor unit service valve.
2) Check the connection of the pipe.
3) Check the operation of the EEV.
4) Check the refrigerant leakage.
5) Check the connection of the indoor unit PBA EVA sensor.
6) Check the fault in the indoor unit EVA sensor.
2. Check procedure
If there occurs E422 error, reset the power and
check in the following order.
Check the opening of the outdoor unit
service valve.
No
Check whether the pipe is empty and open all
the service valves on the gas and liquid pipes.
Yes
Check the connection of
the pipes (such as disconnection, bent, or
cross-connection with other sets).
No
Change and connect the pipes immediately
and empty the pipes and then open the service
valves.
Yes
Check the EEV operation and
the refrigerant leakage.
No
Check the replacement of the EEV (body/coil)
and the refrigerant leaking part. After that,
recharge.
Yes
Check the fault in the indoor unit EVA
sensor and the connection state.
Samsung Electronics
No
Check the temperature value through
S-NET, etc. and then if there is a fault, replace
and reconnect.
4-43
Troubleshooting
0UIFS
1. Current sensor error: Upload EEPROM to the main PBA of the outdoor unit.
After checking for normal operation of PCB, replace the inverter PCB.
2. Compressor Vlimit error: E465
If the compressor is abnormally run, replace the compressor and then ensure that it works normally.
ĺ If the compressor is normally run, check the assembling between the heatproof plate and the inverter PBA and then if there is no abnormality,
replace the inverter PBA.
3. OTP error: E471
Upload EEPROM to the main PBA of the outdoor unit.
4. Capacity inconsistence error: E556
Check the model name between the outdoor and indoor unit and re-enter the option code to the indoor unit.
5. 3-phase power cable disconnection: E424
Check for disconnection of the 3-phase (open) power cable, and check the disconnected EMI PBA fuse.
[RC6666HXH Series Confirmation Matters]
6. Outdoor unit freezing detection (at the stop of the compressor): E403
Outdoor overload protection control (at the stop of the compressor): E404
- Check whether the fan and the motor operate normally.
- Check the operation of EEV.
- Check the temperature sensor of the indoor unit heat exchanger.
- Check the indoor unit inlet blocking.
7. Outdoor unit compressor discharging temperature protection control: E416
- Check for lack of refrigerant.
- Check the blocking of the solenoid valve.
- Check the malfunction of the exhaust temperature sensor.
- Check EEV.
8. Error of impossibility to operate heating at outdoor temperature exceeding 30°C: E440
Error of impossibility to operate cooling at outdoor temperature of -5°C or under: E441
- It is not the error code in the product and it is a specification to protect the product by limiting the temperature scope of use.
- Use by referring to the temperature scope of use on the product manual, etc.
9. OLP overheating and compressor stop: E463
- Check the opening of the sub-valve.
- Check the amount of the cooling water.
- Check OLP sensor.
10. Current sensor error: E468
- Check EEPROM data.
- Check PCB operation.
11. IPM (IGBT Module) or PFCM temperature sensor error: E474
IPM overheat error for outdoor unit inverter compressor: E500
- Check whether IPM is correctly assembled on the heatproof plate.
- Check whether the inlet is blocked.
- If there is a defect, replace IPM.
4-44
Samsung Electronics
5. PCB Diagram and Parts List
5-1 Indoor Unit
5-1-1 MAIN PCB
16
22
Samsung Electronics
1
2
3
4
18
17
5
11
19
6
7
13 20 15
12
8
9
21
23
10 14
5-1
① CN101-GND
② CN701-BLDC MOTOR
③ CN140-FUSE CHECK
#1 : GND
#1: DC310V #3 : GND
#4 : DC15V #5 : FAN RPM
#6 : RPM FEEDBACK
#1: FUSE CHECK SIGNAL
#2: GND
④ CN809-AUTOMATIC
ELEVATING GRILLE
#1 : DC12V
#4 : REMOCON SIGNAL
#5 : GND
⑤ CN501-DISPLAY
#2: LED_0
#1: DC 12V
#4: LED_2
#3: LED_1
#6: LED_4
#5: LED_3
#7: LED_5
#8: REMOCON OUTPUT SIGNAL
#9: AUTO SWITCH
#10: REMOCON INPUT SIGNAL
#11: GND
#13: GND
⑥ CN301-DOWNLOAD
#12: DC5V
⑦ CN83-EXT CTRL
⑧ CN413: THERMISTOR
⑨ CN411- FLOAT SWITCH
⑩ CN103-DRAIN PUMP
#1: GND
#2: EXT-CTRL SIGNAL
#1:EVA-IN THERMISTOR
#1: F/S SIGNAL
#2: GND
#1: D/P POWER(DC12V)
#2: GND
⑪ CN81-ERROR/COMP CHECK
⑫ CN201-EEPROM
⑬ CN311-2WIRED REMOCON
⑭ CN804-VENTILATOR
#1: DC12V
#2: ERROR SIGNAL OUTPUT(GND)
#3: DC12V
#4: COMP/OPER.
SIGNAL OUTPUT(GND)
#1: GND
#3: DC5V
#4: EEPROM_SELECT
#5: EEPROM_SO
#6: EEPROM_SI
#7: EEPROM_CLK
#1:DC12V
#2:COM2_PCTRL_MICOM
#3:COM2_VCHECK_A
#4:COM2_VCHECK_B
#5:COM2_MICOM_AD
#6:DC5V
#8:COM2_C
#9:COM2_D
#10:COM2_TXD
#11:COM2_RXD
#12:GND
#1: DC12V
#2: VENTILATOR SIGNAL
OUTPUT (GND)
⑮ CN401-HUMAN SENSING
SENSOR
⑯ CN412-INDOOR THERMISTOR ⑰ CN808-EEV
#1:INDOOR THERMISTOR
#2:GND
(21) CN801-SPI
#1 #4: EEV SIGNAL OUTPUT
#5: DC12V
#6:DC12V
TB101-AC POWER
#1: GND
#1: POWER(L)
#2: GND
#2: POWER(N)
#3: SPI SIGNAL OUTPUT(DC12V)
5-2
#2:GND
#3 : EVA-OUT THERMISTOR
#4 : GND
#5 : DISCHARGE THERMISTOR
#6 : GND
#1: DC12V
#2: HUMAN SENSING SENSOR
COMM(TXD)
#3: HUMAN SENSING SENSOR
COMM(RXD)
#4: GND
⑳ CN805-LOUVER1/2
⑲ CN806-LOUVER3/4
#1:DC12V
#1 : DC12V
#1:DC12V
#2 #5: LOUVER SIGNAL OUTPUT #2 #5: LOUVER SIGNAL OUTPUT #2 #5: LOUVER SIGNAL
OUTPUT
#6 : DC12V
#7 #10: LOUVER SIGNAL OUTPUT
⑱ CN807-LOUVER5
TE04-COMMUNICATION
#1: COM1(F1)
#2: COM1(F2)
#3: V1(DC12V)
#4: V2(GND)
#5: COM2(F3)
#6: COM2(F4)
Samsung Electronics
PCB Diagram and Parts List
5-1-2 Panel PCB
1
① CN01-DISPLAY
#1 : DC12V
#2 6 : LED Control Signal
#7 : Not used
#8 : Remocon Signal Out
#9 : Not used
#10 : Remocon Signal In
#12 : Vcc
#13 : Not used
Samsung Electronics
5-3
PCB Diagram and Parts List
5-2 Outdoor Unit
5-2-1 Main PCB
QAC018JXADCH
5
5-4
4
3 2
1
6
7
8
9
10
11 12
Samsung Electronics
PCB Diagram and Parts List
① CN030 : 4WAY VALVE
② CN951 : SIGNAL TO SUB PCB
③ CN252 : THERMISTOR
④ CN851:S-NET Communication
#1-#3 : AC220V
#1 #28 : SIGNAL TO SUB PCB
#1 #2 : OLP THERMISTOR
#1 : DC12V
#2 : RXD
#3 : TXD
#4 : GND
⑤ CN701 : EEV
⑥ CN302:Communication(COM1)
⑦ CN251 : THERMISTOR
⑧ CN201 : Downloader
#1 #5 : EEV SIGNAL
#1 : COM1(F1)
#1 #2 : OUTDOOR THERMISTOR
#1 #10 : Download
#6 : DC12V
#2 : COM2(F2)
#3 #4 : DISCHARGE THERMISTOR
#5 #6 : COND THERMISTOR
⑨ CN901 : BLDC MOTOR
⑩ CN551: Downloader
⑪ CN451 : COMP POWER
⑫ CN051 : Reactor
#1: DV310V
#1 #10 : Download
#1 : COMP U-Phase
#1 #2 : Reactor
#3: GND
#2 : COMP V-Phase
#4: DC15V
#3 : COMP W-Phase
#5: FAN_PWM
#6: FAN_Feedback
Samsung Electronics
5-5
PCB Diagram and Parts List
5-2-2 SUB PCB
QAC018JXADCH
1
2
① CN12 : DC12V
② CN951 : SIGNAL TO MAIN PCB
#1 : DC12V
#1 #28 : SIGNAL TO MAIN PCB
#2 : GND
5-6
Samsung Electronics
PCB Diagram and Parts List
5-2-3 MAIN PCB
QAC024JXADCH, AC030JXADCH, AC036JXADCH, AC042JXADCH, AC048JXADCH
20
19
18
17
16
15
14
13
12
11
10
1
9
2
3
8
4
5
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Samsung Electronics
Part Code
3711-003404
3711-003406
3711-003407
3711-000203
3711-002001
3711-007817
3711-000024
DB65-00320A
3711-000744
3711-000177
3716-001162
3711-005096
3711-007069
3711-007325
3711-001038
3711-000939
3711-000176
3711-000997
3711-001036
3711-001084
6
7
Local
CN703
CN702
CN701
CN101
CN306
CN806
CN501
CN304
CN103
CN303
CN003
CN302
CN402
CN401
CN305
CN801
CN12
CN803
CN802
CN403
Function
BASE-HEATER
4WAY-1
HOTGAS
POWER
DOWNLOAD
EEPROM
MODE SELECTOR
DRED
EARTH
COMM-INDOOR
QUIET S/W
COMM-OPTION
HIGH PRESSURE S/W
LOW PRESSURE S/W
COMM INV
ERROR/COMP CHECK
DC12V
EEV1
EEV4
OUT TEMP/COND/DISQ/OLP
Description
YW396-03AV BLU
YW396-03AV YEL
YW396-03AV RED
YW396-03AV WHT
YDW200-20P BLK
B7P-MQ WHT
SMW250-03 WHT
DAPC-2009-6P BLK
YDW236-01 WHT
YW396-02V RED
BR-7623-2P BLK
SMW200-05 BLK
B04B-XARK-1 RED
B04B-XARK-1 BLU
SMW250-06 WHT
SMW250-04 RED
YW396-02V BLU
SMW250-05 BLU
SMW250-06 BLU
SMW250-08 WHT
5-7
PCB Diagram and Parts List
5-2-4 INVERTER PCB
QAC024JXADCH, AC030JXADCH, AC036JXADCH, AC042JXADCH, AC048JXADCH
2
1
3
4
6
5
8
7
① Reactor-A1/B1
#Reactor-A2 : WHT
#Reactor-B2 : WHT
② Reactor-A2/B2
#Reactor-A2 : BLK
#Reactor-B2 : BLK
③ CN50(2PIN/RED)-Communication
#1 : RXD, #2 : TXD
#3 : GND, #4 : DC 5V
#5 : DC 12V, #6 : INV. SMPS signal
④ CN22-Downloader
#1 : RXD_ATARO, #2 : TXD_ATARO
#3, #8 : N.C, #4 #7 : DATA signal
#9 : GND, #10 : DC 5V
⑤ CN21-DAC/ENCODER
For S/W engineer debugging
⑥ CN91-FAN2
#1 : DC 360V
#2 : N.C
#3 : GND
#4 : DC 15V
#5 : FAN RPM
#6 : FAN RPM feedback
⑦ CN90-FAN1
#1 : DC 360V
#2 : N.C
#3 : GND
#4 : DC 15V
#5 : FAN RPM
#6 : FAN RPM feedback
⑧ CN71-COMP.
#1 : COMP. U-phase(RED)
#2 : COMP. V-phase(BLU)
#3 : COMP. U-phase(YEL)
5-8
Samsung Electronics
PCB Diagram and Parts List
5-2-5 EMI PCB
QAC024JXADCH, AC030JXADCH, AC036JXADCH, AC042JXADCH, AC048JXADCH
2
3
1
① L1-AC POWER L phase
L1 : BRN
Samsung Electronics
② N1-AC POWER N phase
N1 : SKY-BLU
③ CN01-AC POWER
#1-#3 : AC 220 240V
5-9
6. Wiring Diagram
6-1 Indoor Unit
This Document can not be used without Samsung’s authorization.
Samsung Electronics
6-1
6-2 Outdoor unit
Q AC018JXADCH
This Document can not be used without Samsung’s authorization.
6-2
Samsung Electronics
QAC024JXADCH, AC030JXADCH, AC036JXADCH, AC042JXADCH, AC048JXADCH
This Document can not be used without Samsung’s authorization.
Samsung Electronics
6-3
7. Reference Sheet
7-1 Index for Model Name
7-1-1 Indoor Unit
Model Code
AH
CH
0H
4H
8H
JH
NH
4H
DH
CH
HH
/H
Capacity
Product Type
Capacity
Year
DVM
1
BTU/H(*100)
E
2012
AJ
PMA
2
CMH(*10)
F
2013
AC
CAC (USD) / ASD
3
HP(/10)
G
2014
AE
EHS
4
WATT(*100)
H
2015
AN
VTL
PAK
(Packaged System)
CHR
J
2016
AG
Feature
Feature
S
General Set (NASA)
N
Indoor unit (NASA)
X
Outdoor unit (NASA)
A
General Set (Non-NASA)
B
Indoor unit (Non-NASA)
C
Outdoor unit (Non-NASA)
Code
1
2
N
4
H
M
L
E
G
C
J
F
P
V
Q
T
D
R
A
7
AH
Buyer Name
AM
AK
AH
Type
1 Way CST
2 Way CST
Mini 4 Way CST
4 Way CST
HSP Duct
MSP Duct
LSP Duct
Fresh Air Intake Duct
Ceiling Conceiled
Duct
Ceiling
Console
Floor Mounting
FAC
RAC-Jungfrau
RAC-Neo Forte(EEV)
RAC-Neo Forte
RAC-Domestic
RAC-Maldive
RAC-New Model
(Slim)
RAC-Vivace
Feature
Power
Remark
A
A(115V, 60hz, 1Ф)
B
B(220V, 60Hz, 1Ф)
CST
C
C(208~230V, 60Hz)
Duct
ETC
D
D(200~220V, 50Hz)
E
E(220~240V, 50Hz)
F
F(208~230V, 60Hz, 3Ф)
G
G(380~415V, 50Hz, 3Ф)
H
H(380V, 60Hz, 3Ф)
J
J(460V, 60Hz, 3Ф)
K
K(220~240V, 50/60Hz, 1Ф)
M
M(127V, 50Hz)
N
N (380~415V, 50/60Hz, 3Ф)
FAC/PAC
Series
RAC
C
COOLING ONLY
H
HEAT PUMP
R
HEAT RECOVERY
D
COOLING ONLY
E
HEAT PUMP
F
FLAGSHIP
A
Cooling only
P
PREMIUM
B
Heat Pump
D
DELUXE <- Basic
N
N/A
S
STANDARD
R410a
R22
R134A
※ "/" can be removed from the buyer card if there are not enough digits.
Samsung Electronics
7-1
Reference Sheet
7-1-2 Outdoor Unit
Model Code
AH
CH
0H
4H
8H
JH
XH
AH
DH
CH
HH
/H
Capacity
Product Type
Capacity
Year
DVM
1
BTU/H(*100)
E
2012
AJ
PMA
2
CMH(*10)
F
2013
AC
CAC (USD) / ASD
3
HP(/10)
H
2014
AE
EHS
4
WATT(*100)
J
2015
AN
VTL
PAK
(Packaged System)
CHR
K
2016
L
2017
AG
Feature
S
General Set (NASA)
N
X
A
B
C
Outdoor unit (Non-NASA)
AH
Buyer Name
AM
AK
AH
Feature
Power
A
Inv+Side+General Temp
A
Indoor unit (NASA)
S
Inv+Side+Low Temp
B
B(220V, 60Hz, 1Ф)
Outdoor unit (NASA)
Q
Inv+Side+Tropical Temp
C
C(208~230V, 60Hz)
General Set (Non-NASA)
F
Inv+Top+Tropical Temp
D
D(200~220V, 50Hz)
Indoor unit (Non-NASA)
B
E
E(220~240V, 50Hz)
F
F(208~230V, 60Hz, 3Ф)
Non Inv+Side+General Temp CAC
N Non Inv+Side+Low Temp
Non Inv+Side+Tropical
R
Temp
Non Inv+Top+Tropical
Z
Temp
ࣜ4Way : 4 , MSP Duct: M , Ceiling: C
A(115V, 60hz, 1Ф)
G
G(380~415V, 50Hz, 3Ф)
H
H(380V, 60Hz, 3Ф)
J
J(460V, 60Hz, 3Ф)
K
K(220~240V, 50/60Hz, 1Ф)
M
M(127V, 50Hz)
N
N (380~415V, 50/60Hz, 3Ф)
Feature
F
FLAGSHIP
P
PREMIUM
D
DELUXE ⇦ Basic
S
STANDARD
Series
L
FLAGSHIP + TROPICAL
C
R
PREMIUM + TROPICAL
DELUXE + TROPICA
⇦ Basic Model
H
HEAT PUMP
R
HEAT RECOVERY
D
COOLING ONLY
STANDARD + TROPICAL
E
HEAT PUMP
A
Cooling only
B
Heat Pump
N
N/A
T
N
COOLING ONLY
R410a
R22
R134A
★
※ MCD: Dummy mock-up model
※ “/” can be removed from the buyer card if there are not enough digits.
7-2
Samsung Electronics
Reference Sheet
7-1-3 Panel
Model Code
PH
CH
4N
H
UH
Product design classification
P
KH
FH
★
Color
Panel
Product Type
C
SH
B
Black
E
WINE
U
White
V
Ivory
A
Automatic
boarding/slide
NH
Panel version
1, 2, .... Korean market use
A, B, ....
Export/
foreign market use
CST
Communication type
TYPE
Product classification
1N
Standard 1 way
1B
Large-size 1 way
S
STANDARD
2N
2 WAY
H
PREMIUM
4N
4 WAY
4S
MINI 4 WAY
4R
Round
1, 2, ....
N
NASA
485
NASA
CST
★
Language
K
★
Korean
C
Chinese
M
8 Languages
E
English
Only display the Global 4 way with Korean/
English K separator.
Pattern
Global
4 Way
Panel
Korean
market use
Export/
foreign
market use
Waffle
Stripe
1
5
A
E
※ Model name for the column/bundle packaging is “~S”.
Samsung Electronics
7-3
Reference Sheet
7-2 Refrigerating Cycle Diagram
Indoor Unit
Outdoor Unit
Electronic expansion valve
3-way valve
Liquid pipe
Heat exchanger
Evaporator
Heat exchanger
Evaporator
Fan
Fan
4-way valve
Gas pipe
3-way valve
Aux accumulator
Compressor
Oil separator
Cooling
Heating
Leak check points
■ CONDENSER
High temperature and high pressure gas state coolant discharged from the compressor is converted to a liquid state as it is cooled
down by the heat emission in the outdoor condenser unit, and sent to the evaporator.
■ COMPRESSOR
Low temperature and low pressure coolant is compressed and sent to the cycling system
■ EVAPORATOR
Liquid coolant sucked in through the capillary tubes cools down the room by absorbing the surrounding heat as it evaporates
(converting from liquid to gas). (Absorbing heat required for evaporation)
■ SERVICE VALVE
You can open the valve by turning the need valve counterclockwise using hex wrench, and it is used for vacuum, gas purging, coolant
injection, coolant purging, and indoor-outdoor unit connection.
■ ACCUMULATOR
Accumulator prevents the flow of liquid-state coolant into the compressor. (Liquid-state coolant flowing into the compressor will
overload the compressor.)
7-4
Samsung Electronics
GSPN (GLOBAL SERVICE PARTNER NETWORK)
Area
Web Site
Europe, CIS, Mideast & Africa gspn1.samsungcsportal.com
Asia
gspn2.samsungcsportal.com
North & Latin America
gspn3.samsungcsportal.com
China
china.samsungportal.com
This Service Manual is a property of Samsung Electronics Co., Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
© Samsung Electronics Co., Ltd. January. 2015.
Printed in Korea.
Code No. AC-00094E_1