Samsung AQV18EWAX User manual

AIR CONDITIONER THE FEATURE OF PRODUCT
AQV18EWAN
SPLIT-TYPE AIR CONDITIONER
Basic : AQV18UGAN
AQV24UGAN
Model : AQV18EWAN
AQV24EWAN
Model Code : AQV18EWAX
Air Conditioner
Mode
Modecan help you sleepquickly and
soundlyandwake up refreshed.
Silence Mode
ncuoy,"edoMecneliS"ehtesuuoynehW
experience extremely quiet operation of your
air conditioner.
AQV18EWAX
Refer to the service manual in the GSPN(see the rear cover) for themore information.
INDOOR UNIT OUTDOOR UNIT
AQV18EWAN
AQV24EWAX
AQV24EWAN
AQV24EWAX
AQV24EWAN
S.INVERTER

Operating Instructions and Installation
Samsung Electronics 1
Contents
11. Precautions ........................................................................................................................................ 1-1
1-1 Precautions for the Service ............................................................................................................. 1-1
1-2 Precautions for the Static Electricity and PL ................................................................................ 1-1
1-3 Precautions for the Safety ............................................................................................................... 1-2
12. Product Specifications ............................................................................................................... 2-1
2-1 The Feature of Product .................................................................................................................... 2-1
2-1-1 The Feature of Product ........................................................................................................... 2-1
2-1-2 Modified items compared with Basic model ..................................................................... 2-2
2-1-3 New components to be applied .......................................................................................... 2-2
2-2 The Comparative Specifications of Product
................................................................................ 2-3
2-3 Accessory and Option Specifications
........................................................................................... 2-4
2-3-1 Accessories ............................................................................................................................... 2-4
13. Disassembly and Reassembly .............................................................................................. 3-1
3-1 Indoor Unit ......................................................................................................................................... 3-2
3-2 Outdoor Unit ..................................................................................................................................... 3-10
14. Troubleshooting ............................................................................................................................ 4-1
4-1 Setting Option Setup Method ....................................................................................................... 4-1
4-2 Display Error and Check Method .................................................................................................. 4-4
4-2-1 Display Error mode ................................................................................................................. 4-4
4-3 Fault Diagnosis by Symptom ........................................................................................................ 4-6
4-3-1 Communication error When E101 or E102 is displayed ......................................
4-3-2 Indoor Temperature Sensor ErrorWhen is diplayed ....................................... 4-7
4-3-3 Indoor Heat Exchanger Temperature Sensor ErrorWhen is diplayed ......... 4-8
4-3-4 Indoor Fan Motor Speed Detecting ErrorWhen is diplayed ......................... 4-9
4-3-5 MPI ErrorWhen E186 is displayed
................................................................................... 4-10
4-3-6 Outdoor temperature sensor error When E221 is displayed............................................ 4-11
4-3-7 Coll temperature sensor error When E237 is displayed...................................................... 4-12
4-3-8 Discharge temperature sensor error When E251 is displayed.......................................... 4-13
4-3-9 Discharer over termperature sensor errorWhen E416 is displayed................................ 4-14
4-3-10 The outdoor unit fan error When E458 is displayed............................................................. 4-15
4-3-11 Compressor start errorWhen E461 is displayed..................................................................... 4-16
4-3-12 I_Trip error When E462 is displayed........................................................................................... 4-17
4-3-13 O.C.(over current)error When E464 is displayed..................................................................... 4-18
4-3-14 Comp Rotation error When E467 is displayed........................................................................ 4-19
4-3-15 Current sensor errorWhen E468 is displayed......................................................................... 4-20
4-3-16 DC-Link voltage sensor errorWhen E469 is displayed........................................................ 4-21
4-3-17 OTP error When E471 is displayed............................................................................................... 4-22
4-6

Operating Instructions and Installation
2 Samsung Electronics
Contents
4-3-18 AC Line Zero Cross signal out error When E472 is displayed .................................... 4-22
4-3-19 Operation condition secession errorWhen E400/441 is displayed.............................. 4-23
4-3-20 Capacity miss match error When E556 is displayed........................................................... 4-23
4-3-21 DC-Link voltage under/over error When E466 is displayed............................................. 4-24
4-3-22 No Power (completely dead)-Initial diagnosis (Not displayed)
..................................... 4-25
4-3-23 The outdoor unit power supply error (Not displayed)............................................................ 4-26
4-3-24
When the Up/Down Louver Motor Does Not Operate. (Initial Diagnosis) (Not displayed) .... 4-27
4-3-25 When the remote control is not receiving
........................................................................ 4-28
4-4 PCB Inspection Method .................................................................................................................. 4-29
4-4-1 Pre-inspection Notices............................................................................................................................. 4-29
4-4-2 Inspection Procedure............................................................................................................................... 4-29
4-4-3 Indoor Detailed Inspection Procedure ............................................................................................. 4-29
4-4-4 Outdoor Detailed Inspection Procedure.......................................................................................... 4-30
4-5 Main Part Inspection Method ........................................................................................................ 4-31
15. Exploded Views and Parts List ............................................................................................. 5-1
5-1 Indoor Unit ......................................................................................................................................... 5-1
5-2 Outdoor Unit ..................................................................................................................................... 5-3
5-3 Ass'y control in ................................................................................................................................................. 5-5
16. Elecrtical Parts List ................................................................................................... 6-1
7-1 Indoor Unit ......................................................................................................................................... 7-1
7-2 Outdoor Unit ..................................................................................................................................... 7-2
17. Wiring Diagram .............................................................................................................................. 7-1
5-4 Ass'y control out ................................................................................................................................................. 5-7
10-4
１１
１１－１
１１－２
１１－２
１２－１
１２－２
１２－３
１２－４
１２－５
１２－６
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１２－３
１２－４
１２－７
１２－９
１２－１０
１２－１
１２

HUMDITY CONTROL
MPI DRIVE
１１
１１－１
１１－１

１１－２
11-2

SamsungElectronics
Block Diagram
11-3
OUTDOOR FAN
B/D
IGBT
DIODEIPM
SMPS
DC_LINKCAP

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Samsung Electronics 9-2
Circuit Descriptions Circuit Descriptions
9-1-2 Outdoor Unit

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Samsung Electronics 3-1
3. Disassembly and Reassembly
 Necessary Tools
Item Remark
+SCREW DRIVER
MONKEY SPANNER

3-2 Samsung Electronics
3-1 Indoor Unit
No Parts Procedure Remark
1PANEL-FRONT 1) Stop the driving of air conditioner and shut off
main power supply.
2) Open the FRONT-GRILLE and pull out from the
PANEL-FRONT.
3) Detach COVER-TERMINAL from the PANEL-
FRONT.(use + Screw Driver)
4) Loosen connector wire(white) and detach the
temperature sensor wire.
5) To detach the FRONT-PANEL the main frame,
unfasten 2 screw at the bottom.(use + Screw
Driver)
6) Take off the FRONT-PANEL,lifting up the bottom.

Operating Instructions and Installation
Samsung Electronics 3-3
No Parts Procedure Remark
2TRAY DRAIN 1) Loosen stepping motor wire and detach the
hook of main frame.
2) To detach TRAY-DRAIN from the main frame,
pull the bottom of the TRAY-DRAIN towards
you.
3CONTROL IN 1) Unfasten the earth screw.(use + Screw Driver)
2) Detach the temperature sensor and Humidity
sensor.
3) Detach COVER-CONTROL from the CASE-
CONTROL.
4) Loosen MPI connector wire(yellow), and MOTOR
wires(white,blue).
5) Take off the CASE-CONTROL from the main
frame.

Operating Instructions and Installation
3-4 Samsung Electronics
No Parts Procedure Remark
4PBA 1) Unfasten the screw.
2) Cut the cable tie.
3) Loosen the terminal block wires.
(Total 4EA: #N(T)-2EA, #2-TEA, #3-TEA)
 Caution:
The terminal is locking type.
So, when you separate terminals,
pull pressing the button.
Button

Operating Instructions and Installation
Samsung Electronics 3-5
No Parts Procedure Remark
4PBA 4) Loosen the Motor Feedback connector(CN44).
 Caution:
When you separate the connector,
pull pressing the locking button.
5) Loosen the Humidity sensor connector(CN42).
 Option connector.
 Caution:
When you separate the connector,
pull pressing the locking button.
6) Loosen the MPI connector(CN81).
 Option connector.
 Caution:
When you separate the connector,
pull pressing the locking button.
7) Loosen the Relay #4 blue-connector(RY71).
 Caution:
The terminal is locking type.
So, when you separate terminals,
pull pressing the button.
Button

Operating Instructions and Installation
3-6 Samsung Electronics
No Parts Procedure Remark
4PBA 8) Loosen the Relay #3 red-connector(RY71).
 Caution:
The terminal is locking type.
So, when you separate terminals,
pull pressing the button.
9) Loosen the Step motor connector.
 Caution:
When you separate the connector,
pull pressing the locking button.
10) Loosen the Thermistor wire connector(CN43).
 Caution:
When you take off the PBA, don’t touch
the components.
Please hold the PBA both side.
11) Loosen the Motor connector(CN71).
 Caution:
When you separate the connector,
pull pressing the locking button.
Button

Operating Instructions and Installation
Samsung Electronics 3-7
No Parts Procedure Remark
4PBA 12) Take off the main PBA from the ASS’Y
Control in.
 Caution:
When you take off the PBA, don’t touch
the components.
Please hold the PBA both side.

Operating Instructions and Installation
3-8 Samsung Electronics
No Parts Procedure Remark
5EVAPORATOR 1) Unfasten the screw at the right side.
(use + Screw Driver)
2) Unfasten the screw at the left side.
(use + Screw Driver)
3) Detach the HOLDER PIPE.
4) Take off the EVAPORATOR
from the main frame.

Operating Instructions and Installation
Samsung Electronics 3-9
No Parts Procedure Remark
6FAN MOTOR
&
CROSS FAN
1) Unfasten the screw in the HOLDER-EVAP on the
left side of evaporator.(use + Screw Driver)
2) unfasten the 3 points screws in the CASE-
CONTROL, and then detach the CASE.
(use + Screw Driver)
3) unfasten the screw a little.(use + Screw Driver)
4) Lift up the evaporator slightly and
pull the CROSS-FAN to the left side.

3-10
３

3-11