SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTED TYPE
Indoor unit
Outdoor unit
MW18Y3H MR18Y3H
MW24Y3H MR24Y3H
CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . .
DIMENSIONS. . . . . . . . . . . . . . . . . . . . . . . .
REFRIGERANT SYSTEM DIAGRAM. . . . .
CIRCUIT DIAGRAM. . . . . . . . . . . . . . . . . . .
INDOOR PCB CIRCUIT DIAGRAM. . . . . . .
1
2
4
5
7
OUTDOOR PCB CIRCUIT DIAGRAM. . . .10
ERROR DERECTION. . . . . . . . . . . . . . . . .16
PARTS (INDOOR UNIT) . . . . . . . . . . . . . .18
PARTS (OUTDOOR UNIT). . . . . . . . . . . . 22
ACCESSORIES. . . . . . . . . . . . . . . . . . . . . 26
DIMENSIONS
INDOOR UNIT
Unit : inch (mm)
12-5/8"
(320)
39-1/4" (998)
9" (228)
Drain pipe diameter
Inside : 5/8 inch (16 mm)
Outside : 1-3/32 inch (28 mm)
Liquid pipe diameter : 3/8 inch (9.52 mm)
Gas pipe diameter : 5/8 inch (15.88 mm)
2010.02.26
2
OUTDOOR UNIT
Unit : inch (mm)
1/2"
(12)
13" (330)
35-1/2" (900)
3"(77)
1-1/4"
(31)
15-3/4" (400)
Air Flow
25-5/8" (650)
5-3/4" (147)
6-3/4" (170)
2010.02.26
3
REFRIGERANT
SYSTEM DIAGRAM
Heat exchanger
( INDOOR )
3-Way valve
(Large)
3-Way valve
(Small)
Muffler
Pressure
Strainer
switch
Expansion
valve
4-Way valve
Heat exchanger
( OUTDOOR )
Strainer
Cooling flow
Heating flow
Refrigerant pipe diameter
Liquid : 3/8" (9.52 mm)
Gas : 5/8" (15.88 mm)
2010.02.08
3
W 1 9
W 2 0
B L A C K
W H I T E
T M 6 0 1
T M 6 0 0
W 9
B L A C K
W 2 1
Y
G R A
W H I T E
B L A C K
Y E L L O W
W H I T E
W H I T E
O R A N G E
R E D
B R O W N
B L A C K
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
U
T M 3 0 5
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
V
T M 3 0 4
W
T M 3 0 3
C N 1 0
C N 8
C N 5
C N 2
C O N T R O L L E R
C N 1
)
P C B M ( A I N A S S Y P C B
C N 3 C N 1
C N 1 6 C N 1 4
C N 6
1
W 1 9
W 2 0
B L A C K
W H I T E
T M 6 0 1
T M 6 0 0
W 9
B L A C K
W 2 1
Y
G R A
W H I T E
B L A C K
Y E L L O W
W H I T E
W H I T E
O R A N G E
R E D
B R O W N
B L A C K
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
U
T M 3 0 5
W H I T E
W H I T E
W H I T E
W H I T E
W H I T E
V
T M 3 0 4
W
T M 3 0 3
C N 1 0
C N 8
C N 5
C N 2
C O N T R O L L E R
C N 1
)
P C B M ( A I N A S S Y P C B
C N 3 C N 1
C N 1 6 C N 1 4
C N 6
1
INDOOR PCB
CIRCUIT DIAGRAM
CONTROL UNIT
MW18Y3H : EZ-0090HHSE
MW24Y3H : EZ-0090KHSE
TERMINAL BOARD
N
THERMAL
FUSE 102
1
L
SERIAL
2
OUTDOOR UNIT
3
EARTH
EARTH TERMINAL
INDICATOR PCB ASSEMBLY
K05CY-0902HSE-D0
TM2
TM1
W5
TM4
GREEN
22007 22007
22007
RED
WHITE
BLACK
CONTROLLER PCB ASSEMBLY
MW18Y3H : K08CX-0903HSE-C1
MW24Y3H : K08CX-0904HSE-C1
CN6-1
CN6-2
CN6-3
RED
WHITE
BLACK
WIRED REMOTE CONTROL UNIT
CN11
B07B-PASK
CN201
JB20-07HG
CN2
1
2
3
4
5
6
7
CN11-1
CN11-2
CN11-3
CN11-4
CN11-5
CN11-6
CN11-7
RED
1
2
3
4
5
6
7
LOUVER ( RIGHT / LEFT )
SJH20-05WS
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
CN2-1
CN2-2
CN2-3
CN2-4
CN2-5
RED
1
2
3
4
5
ORANGE
YELLOW
PINK
M
BLUE
CN5
SJH20-06WS
LOUVER ( UP / DOWN )
CN14
1
2
3
4
5
6
B3B-XH-AM
CN5-1
CN5-2
CN5-3
CN5-4
CN5-5
RED
1
2
3
ORANGE
YELLOW
PINK
EX IN
M
BLUE
CN16
B2B-XH-AM
1
EX OUT
2
CN8
B06B-PASK
LOUVER ( DIFFUSER )
CN8-1
CN8-2
CN8-3
CN8-4
CN8-5
RED
1
2
3
4
5
6
ORANGE
YELLOW
PINK
CN3
XARR-03VF XAP-03V-1
PIPE THERMISTOR
JC25-02HG
M
BLACK
CN3-1
RED
1
2
BLUE
CN3-2
WHITE
BLACK
CN1
2P-SAN
CN2-1
CN2-2
BLACK
BLACK
1
ROOM THERMISTOR
FAN MOTOR
2
CN10
B06B-XARK
CN10-6
RED
6
5
4
3
2
1
CN13
B5P-SHF-1AA
CN10-4
CN10-3
CN10-2
CN10-1
BLACK
WHITE
YELLOW
BLUE
CN13-1
CN13-2
CN13-3
CN13-4
CN13-5
1
2
3
4
5
F. M.
TEST
2010.02.26
7
1 / < 1 0 W . 6 > 5 k
R 4 9
INDOOR UNIT
INDICATOR PCB ASSEMBLY
K05CY-0902HSE-D0
5V
5V
CN201
07 JB20 / PAP
1061 L=230
D201
SLR-325MC
1
2
3
4
5
6
7
GREEN
D202
SLR-325DC
ORANGE
C201
0.1
GREEN
<F>
D203
SLR-325MC
5V
I C201
R201
47
GP1UM261RKVF
2
1
3
VCC
OUT
GND
<1/4W>
+ C202
47/
10V
2010.01.20
9
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
U L 1 0 0 7
U L 1 0 0 7
U L 1 0 0 7
U L 1 0 0 7
U L 1 0 0 7
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
W H I T E G 2 W 4 A
U L 1 0 0 7
U L 1 0 0 7
U L 1 0 0 7
U L 1 0 0 7
U L 1 0 0 7
U L 1 0 0 7
U L 1 0 0 7
U L 1 0 0 7
U L 1 0 0 7
B R O W G N 2 W 4 A
R E D G 2 W 4 A
O R A N G E W G 2 4
U L 1 0 0 7
U L 1 0 0 7
U L 1 0 0 7
A
Y E L L O G W 2 W 4 A
U L 1 0 0 7
B L A C K
W H I T E
W
A
G 2 4
U L 1 4 3 0
U L 1 4 3 0
W A
G 2 4
Y
G R A G 2 W 0 A
U L 3 2 7 1
U L 3 2 7 1
B L A C K
W A G 1 4
W H I T E
B L A C K
W
A
G 2 0
U L 3 2 7 1
U L 3 2 7 1
W A
G 2 0
OUTDOOR UNIT
MR18Y3H
CAPACITOR PCB ASSEMBLY
K05FB-0902HUE-P0
W12
W7
P
N
B
B
WHITE
YELLOW
C201
660/
450V
C203
660/
450V
+
+
W8
W13
B
B
BLUE
VIOLET
POWER_G
MR24Y3H
CAPACITOR PCB ASSEMBLY
K05FB-0903HUE-P0
W12
W7
P
N
B
B
WHITE
YELLOW
C200 - C202
+
660/
450V
x 3
+
+
W8
W13
B
B
BLUE
VIOLET
POWER_G
2010.01.25
15
ERROR DETECTION
Display
Operation
Error
Error
Timer LED
2 flash
3 flash
4 flash
5 flash
8 flash
2 flash
3 flash
2 flash
3 flash
4 flash
8 flash
2 flash
3 flash
4 flash
7 flash
8 flash
2 flash
3 flash
5 flash
6 flash
2 flash
3 flash
2 flash
3 flash
5 flash
2 flash
3 flash
4 flash
LED
Serial signal (reverse) error, at operation start up
Serial signal (reverse) error, during oeration
Serial signal (forward) error, at operation start up
Serial signal (forward) error, during operation
Wired remote controller error
Serial signal error
Normal
Indoor temperature thermistor open / short
Heat exchanger middle thermistor open / short
Discharge thermistor open / short
Heat exchanger thermistor open
Outdoor temperature thermistor open / short
Compressor temperature thermistor open / short
Forced automatic SW welded
Indoor unit thermistor error
Outdoor unit thermistor error
2 flash
3 flash
Main relay welded
Indoor unit control error
4 flash
Power interruption error
VDD permanent stop protection
reverse VDD permanent stop protection
Current trip error
CT abnormal
Outdoor unit control error
5 flash
Compressor location detection error
Outdoor unit fan drive system abnormal
Abnormal lock
Indoor fan motor error
Refrigerant cycle error
6 flash
7 flash
Abnormal rotation
Discharge Temperature abnormal
Cooling high pressure abnormal rise
Pressure switch trouble
Active filter voltage trouble (second time)
Active filter voltage trouble (first time)
PFC circuit error
Optional function error
Model information error
8 flash
0.1 sec on/off 0.1 sec on/off Model information error
16
2010.02.26
OUTDOOR UNIT
LED
ERROR
on
Discharge temperature abnormal
0.5 second on / 0.5 second off
0.1 second on / 0.1 second off
IPM overcurrent protection
Thermistor abnormal
CT abnormal
2.0 second on / 2.0 second off
0.1 second on / 2.0 second off
5.0 second on / 5.0 second off
Compressor location abnormal
Fan abnormal
2010.02.26
17
PARTS
INDOOR UNIT
5
4
5
2
6
4
3
Ref Descriprion
Part number
1
2
3
4
5
6
Front Panel Total Assy 9315335258
Front Panel
9314991080
9315336064
9315014016
9306755010
9315010018
9379219013
9305642045
Intake Grille Assy
Air Filter
1
Clamper Grille
Receiver Window
-- Remote
-- Remote Holder
2010.02.26
18
16
INDOOR
UNIT
15
18
19
20
23
25
21
24
11
Ref Descriprion
11 Casing Assy
Part number
Ref Descriprion
Part number
9315331045
9315016010
9315017017
9315018014
9315019011
9367677009
9315769015
9312156016
9312441013
9311997016
21 Louver U
22 Louver Z
23 Diffuser U
24 Diffuser Z
25 Spring C
26 Piller A
9315000019
9315001016
9315002013
9315003010
9314142017
9315009012
9315006011
9305751051
12 Casing Cover B
13 Casing Cover L
14 Casing Cover R
15 Casing Cover F
16 Drain Cap
17 Drain Hose Assy
18 Bush B
27 Joint B
-- Fan Guard
19 Spacer B
-- Fan Guard Holder Right 9315814012
-- Fan Guard Holder Left 9315815019
20 R and L Louver
2010.02.26
19
INDOOR UNIT
37
33
35
36
34
32
39
38
Ref Descriprion
Part number
31
31 Evaporator Total Assy 9315338020
32 Water Seal
9315251015
9314994012
9314995019
9315022011
9315013019
9315411013
9315024015
9306628017
33 Evaporater Holder R
34 Evaporater Holder L
35 Rear Bracket
40
36 Filter Guide
37 Filter Guard
38 Crossflow Fan Assy
39 Bearing C Assy
40 Room Therimistor Holder 9315252012
2010.02.26
20
42
41
INDOOR UNIT
43
50
45
46
51
44
47
Ref Descriprion
Part number
41 Controller PCB (18)
41 Controller PCB (24)
41 Controller PCB (30)
42 Control Box
9708065168
9708065175
9708065182
9314996023
9314997020
9314998027
9315028013
49
43 Control Cover
44 Motor Case
48
45 Terminal Earth
46 DC Brushless Motor 9602784004
47 Motor, Step
48 Motor, Step
49 Motor, Step
50 Terminal
9900384029
9900384036
9900139063
9900447014
9707210057
9900551018
51 Indicator PCB Assy
-- Pipe Thermistor
Controller PCB includes a room thermistor.
2010.02.26
21
1
PARTS
OUTDOOR UNIT
5
4
6
Ref. Description
Part number
1
2
3
4
5
6
Top Panel Sub Assy
9374417032
Front Panel Sub Assy 9374414079
Service Panel Sub Assy 9374415052
Emblem Rear
9375212032
Right Panel Sub Assy 9374416134
Valve Cover
9374174010
9375381011
9303029015
313166024302
-- Protective Net
-- Drain Assy
-- Drain Cap
2
3
2010.02.26
22
OUTDOOR UNIT
13
12
14
15
11
17
Ref. Description
11 Base Assy
Part number
9374166206
12 Separate Wall Sub Assy 9374413188
13 Condenser A Assy 9374433056
14 Motor Bracket Sub Assy 9374418152
16
15 Fan Motor
9602843015
9366378020
9374099030
16 Propeller Fan Assy
17 Valve Plate
2010.02.26
23
OUTDOOR UNIT
26
30
28
29
21
32
24
Ref. Description
Part number
21 Strainer Assy
9372524015
9377958013
9377959010
9372802038
9810135001
9385005006
22 3-Way Valve Sub Assy
23 3-Way Valve Assy
24 Check Joint Assy
25 Compressor Sub Assy
26 Accumulator
31
22
27 Accumulator Support Assy 9355351003
28 4-Way Valve
29 Solenoid
9900164010
9970055034
9900186012
9370947144
9900057039
9372369050
27
30 Pressure Switch
31 Expansion Valve Assy
32 Expansion Valve Coil
-- Muffler
23
25
2010.02.26
24
49
42
OUTDOOR UNIT
51
Connector : Orange
Connector : Blue
43
Connector : Green
47
Connector
: Red
48
44
46
52
54
53
Ref. Description
Part number
41 PCB Case Assy
42 Inverter Case
9375316020
9375314019
9707592016
9704265012
9707667288
9707667295
9707667301
43 ACTPM
44 PTC Thermistor
45 Inverter PCB Assy (18)
45 Inverter PCB Assy (24)
45 Inverter PCB Assy (30)
45
46 Power Supply PCB Assy (18) 9708510057
46 Power Supply PCB Assy (24, 30) 9708510019
50
41
47 Capacitor PCB Assy (18)
47 Capacitor PCB Assy (24, 30)
48 Transistor PCB Assy (18)
9707257069
9707257076
9707669114
48 Transistor PCB Assy (24, 30) 9707669121
49 Choke Coil
9900223014
9900203023
9900461003
9900463007
9900466015
9900514013
50 Terminal
51 Discharge Thermistor
52 Outdoor Thermistor
53 Compressor Thermistor
54 Heat Exchanger Thermistor
2010.02.26
25
ACCESSORIES
Name and Shape
Part number
9315023018
Wall hook bracket
Remote control
9379219013
9305642045
Remote control
holder
Battery (penlight)
0600185534
9310519004
0700076046
Cloth tape
Tapping screw (big)
Tapping screw (small)
Air cleaning filter
0700019036
9312153060
9311925071
Air cleaning filter
frame
9368568009
Drain pipe (Outdoor unit)
Drain cap (Outdoor unit)
9301102000
313166024302
2010.02.26
26
1002G3767
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