SPLIT TYPE
AIR CONDITIONER
(60Hz)
type
CASSETTE
Models
Indoor unit
Outdoor unit
MC24Y3F
MR24UY3F
CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . 1
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2
REFRIGERANT SYSTEM DIAGRAM . . . . . . . 4
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . 5
INDOOR PCB CIRCUIT DIAGRAM . . . . . . . . 7
OUTDOOR PCB CIRCUIT DIAGRAM . . . . . . 8
ERROR CONTENTS . . . . . . . . . . . . . . . . . . . . 11
DISASSEMBLY ILLUSTRATION . . . . . . . . . . 13
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . 21
STANDARD ACCESSORIES . . . . . . . . . . . . . 23
DIMENSIONS
INDOOR UNIT
unit : inch (mm)
29-17/32" (750)
32-3/4" (830)
37" (940)
Drain inside Dia. ø1-1/4" (ø32)
outside Dia. ø1-1/2" (ø37)
11-3/4" (298.5)
11-3/4" (298.5)
12" (305.5)
9-25/32"
12" (305.5)
9-25/32"
(248.5)
(248.5)
2006.05.18
2
OUTDOOR UNIT
unit : inch (mm)
1-1/4"
(31)
1/2"
(12)
3"(77)
13" (330)
35-1/2" (900)
15-3/4" (400)
Air Flow
25-5/8" (650)
5-3/4" (147)
6-3/4" (170)
2006.05.18
3
REFRIGERANT SYSTEM DIAGRAM
OUTDOOR UNIT
INDOOR UNIT
Pressure
Check Valve
Refrigerant Pipe
15.88mm (5/8")
High Pressure
Switch
Charging
Valve
4-way
Valve
Condenser
Evaporator
Accumulator
Compressor
Expansion
Valve
Refrigerant Pipe
9.52mm (3/8")
Strainer
Strainer
Charging Valve
: COOL
: HEAT
2006.05.18
4
CIRCUIT DIAGRAM
INDOOR UNIT
PIPE TEMPERATURE THERMISTOR
ROOM TEMPERATURE THERMISTOR
1 2
1 2
1 2
1 2
TO REMOTE CONTROL UNIT
BROWN
RED
BROWN
CN7
CN8
1
2
3
4
5
1
2
3
4
5
1 1
2 2
3 3
4 4
5 5
RED
ORANGE
YELLOW
WHITE
ORANGE
STEP MOTOR
M
3
1
TERMINAL
2
YELLOW
WHITE
RED
WHITE
BLACK
1
2
3
1
2
3
BLACK
BLACK
BLACK
1 1
2 2
3 3
1
2
3
1
2
3
FLOAT SWITCH
BLACK
POWER SUPPLY
PCB ASSY
BLACK
BLACK
YELLOW
1
2
1
2
1 1
DRAIN PUMP MOTOR
M
2 2 YELLOW
L
N
BLACK
WHITE
RED
1 1
2 2
3 3
RED
1 1
2 2
3 3
WHITE
BLACK
FAN MOTOR
GREEN /
YELLOW
F M
BLACK
WHITE
RED
1 1
2 2
3 3
5 5
6 6
PURPLE
BLUE
G
2
(N)
1
3
FAN MOTOR
CAPACITOR
WHITE
WHITE
1 1
2 2
TERMINAL
TO OUTDOOR UNIT
2006.05.18
5
OUTDOOR UNIT
OUTDOOR TEMPERATURE
THERMISTOR
BLACK
BLUE
BROWN
PIPE TEMPERATURE
THERMISTOR
COMPRESSOR TEMPERATURE
THERMISTOR
BROWN
DISCHARG TEMPERATURE
THERMISTOR
BLACK
1 2
CN25
HEAT SINK TEMPERATURE
THERMISTOR
1 2
1 2 1 2
1 2
EMI FILTER
CONNECTOR
CN21
CN22 CN23 CN26
1T
RED
RED
RED
RED
U
W305
1
2
HIGH PRESSURE SWITCH
CN37
U
WHITE
WHITE
BLACK
V
COMPRESSOR
W304
V
FUSE
F4 T 5A-250V
BLACK
BLACK
1
2
3
BLACK
W
W303
W
CN30
4WV
SOLENOID COIL
ACTIVE
FILTER
MODULE
BROWN
RED
ORANGE
1
2
3
4
5
6
1
CONTROLLER PCB ASSY
CN407
2
3
4
5
RED
1
2
3
4
5
6
TERMINAL
BLACK
WHITE
YELLOW
BLUE
YELLOW
F M FAN MOTOR
CN802
BLACK
WHITE
L1
YELLOW
W12
W13
P
N
BLUE
BLACK
BROWN
L2
+
EMI FILTER
2T
-
CHOKE COIL
RED
BROWN
BLUE
1
2
3
4
5
6
FUSE
F2 T 3.15A-250V
CN27
ORANGE
YELLOW
WHITE
EXPANSION VALVE COIL
E V
RED
W16
W17
BLACK
W10
W11
CN1
1 2 3 4
CN34
1 2 3
W200
WHITE
BLACK
1 2 3
CN1
TM102
TM101
W9 W8
POWER SUPPLY PCB ASSY
W6 W7
W5
W3
W4
RED
2 (N)
1
3
N
G
G
L
EARTH
EARTH
2006.05.18
6
INDOOR PCB CIRCUIT DIAGRAM
CONTROLLER PCB ASSEMBLY
K01AL-050LHSE-C1
Model : MC24Y3F
2006.05.25
7
OUTDOOR PCB CIRCUIT DIAGRAM
INVERTER ASSEMBLY
EZ-005FHUE
Model : MR24UY3F
POWER SUPPLY PCB ASSY
K04BA-0500HUE-P0
CONTROLLER PCB ASSY
K04AW-0502HUE-C1
2006.05.25
8
Model : MR24UY3F
CONTROLLER PCB ASSEMBLY
K04AW-0502HUE-C1
600/450V x 4
2006.05.25
9
Model : MR24UY3F
POWER SUPPLY PCB ASSEMBLY
K04BA-0500HUE-P0
TM100
L2
N200500K1D7C
L1
RCH4730-021PF07
L4
RCH4730-021PF07
TM101
TM102
W4
BLACK
WHITE
B
VA101
470V
<TNR>
VA102
470V
C104
C112
0.015
<YE>
C113
0.015
<YE>
0.033
<YE>
C105
0.033
<YE>
C107
3.3
<LE>
C111
3.3
<LE>
C101
3.3
<LE>
POWER SOURCE
230V
60Hz
<TNR>
W5
W6
B
C106
3.3
<LE>
SA100
RA-302M
B
BLACK
TO INDOOR UNIT
CT1
CT-1B
B
W7
WHITE
5V
CN1
B3B-XASK-1-A
WHITE
D60
DAN217U
W3
GREEN
5V
B
C65
0.1
EARTH
R68 22K
<1/10W>
<F>
1
2
3
C60
220/16V
<PJ>
VR1
B2K
+
CT OUT
B
B
W8
BLACK
C64
0.1
<F>
AC VOLT OUT
R60 1.0K
<1/10W>
(1%)
R61 3.74K
<1/10W>
(1%)
W9
WHITE
10
2006.05.25
ERROR CONTENTS
(indoor unit)
Error code
Error contents
Outdoor signal abnormal
(1) Stop the air conditioner operation.
(2) Press the master control button and the fan control button simultane-
ously for 2 seconds or more to start the test run.
13
Excessive outdoor pressure (permanent stop)
Compressor temperature sensor
Pressure switch error
14
15
16
17
18
19
1A
1b
1c
1d
1E
1F
IPM error
Test run display
CT error
(3) Press the start/stop button to stop the test run.
[SELF-DIAGNOSIS]
When the error indication "E:EE" is displayed, follow the following items to
perform the self-diagnosis. "E:EE" indicates an error has occurred.
Active filter module (AFM) error
Compressor does not operate
Outdoor unit fan error
1. REMOTE CONTROLLER DISPLAY
(1) Stop the air conditioner operation.
Communication error
(2) Press the set temperature buttons
onds or more to start the self-diagnosis.
simultaneously for 5 sec-
(inverter
multicontroller)
2 way valve sensor error
Refer to the following tables for the description of each error code.
Expansion valve error
Unit number (usually 0)
Connection indoor unit error
Error code
SU MO TU WE TH FR SA
Ex. Self-diagnosis
2. CHECKING DRAINAGE
(3) Press the set temperature buttons
onds or more to stop the self-diagnosis.
simultaneously for 5 sec-
To check the drain, remove the water cover and fill with 2 to 3 of water as
shown in figure.
The drain pump operates when operating in the cooling mode.
Error code
Error contents
Communication error
00
(indoor unit
remote controller)
Drain pipe
Communication error
01
02
03
04
05
06
08
09
0A
0c
11
12
(indoor unit
outdoor unit)
Room temperature sensor open
Water cover
Room temperature sensor short-circuited
Indoor heat exchanger temperature sensor open
Indoor heat exchanger temperature sensor short-
circuited
Watering pot
Outdoor heat exchanger temperature sensor
Power source connection error
Float switch operated
Outdoor temperature sensor
Discharge pipe temperature sensor
Model abnormal
Indoor fan abnormal
2006.05.25
11
ERROR CONTENTS
(outdoor unit)
1. Make a TEST RUN in accordance with the in-
stallation instruction sheet for the indoor unit.
2. When the product is operating:
1
Press the PUMP DOWN switch on the outdoor unit.
The LED on the outdoor unit circuit board lights, and
operation stops. At this point, recovery has not been
completed, so do not close the two- and three-way
valves.
2. OUTDOOR UNIT LEDS
When a malfunction occurs in the outdoor unit, the LED on
the circuit board lights to indicate the error. Refer to the fol-
lowing table for the description of each error according to the
LED.
2
3
4
The pump down operation (cooling operation) be-
gins after three minutes. Close the three-way valve
(liquid) after operation starts.
LED
Error contents
Communication error
After 2 - 3 minutes, operation stops. Close the three-
way valve (gas) within one minute after operations
stops.
1 flash
(Indoor unit - Outdoor unit)
2 flash Discharg pipe temperature sensor
3 flash Outdoor heat exchanger temperature sensor
4 flash Outdoor temperature sensor
7 flash Compressor temperature sensor
8 flash Heat sink temperature sensor
9 flash Pressure switch abnormal
The LED will go out three minutes after it stops. Dis-
connect the power supply after confirming that the
LED has gone out.
*When the pump down operation is repeated, temporarily disconnect
the power supply after opening the closed valves (both liquid and gas).
Reconnect the power supply after 2 - 3 minutes and perform the pump
down operation.
12 flash IPM error
*When the start of the operation after pump down operation has been
completed, temporarily disconnect the power supply after opening the
closed valves (both liquid and gas).
Reconnect the power supply after 2-3 minutes and be sure to perform
a test operation for cooling.
13 flash Compressor rotor position cannot detect
14 flash Compressor cannot operate
15 flash Outdoor fan abnormal (upper fan)
16 flash Outdoor fan abnormal (lower fan)
3-way valve
(Liquid)
lighting
No error
SPECIAL INSTALLATION
SETTING
PUMP DOWN (Refrigerant collecting operation)
3-way valve
(Gas)
Perform the following procedures to collect the refrigerant
when moving the indoor unit or the outdoor unit.
1. When the product is stopped:
PUMP DOWN SW (SW2)
1
Press the PUMP DOWN switch on the outdoor unit.
(The LED on the outdoor unit circuit board lights.)
2
The pump down operation (cooling operation) be-
gins right away. After oparation starts, close the
three-way valve (liquid).
3
4
After 2 - 3 minutes, operation stops. Close the three-
way valve (gas) within one minute after operations
stops.
The LED will go out three minutes after it stops.Dis-
connect the power supply after confirming that the
LED has gone out.
DANGER
This part (Choke coil) generates high voltages.
Never touch this part.
2006.05.18
12
DISASSEMBLY
ILLUSTRATION
122
122
338
226
692
847
692
122
INDOOR UNIT
847
690
847
847
690
522
122
876-2
692
690
692
543
543
692
692
847
122
847
544
544
543
543
847
542
834-2
544
705
705
544
545
93
240
481
481
71
472-1
472-2
472-4
777-2
253-A
858
71
481
481-1
858
487
472-3
777-1
469
468
472-5
472-5
472-5
472-5
710
61
2006.05.25
13
INDOOR UNIT
462
479
187
460-1
803
460-2
484
835
484
464
484
467
127
798
835
482
465
244
814
563
541
334
815-1
541-1
484
168
164
474
476-2
146-2
146-1
565
337-2
477
197
197
337-1
337-1
160
834-1
457
223
514
457
488
2006.05.18
14
INDOOR UNIT
212
875
236
815-2
380
320-1
32
320-1
380
381-4
34
380
625
234
195
381-4
731-2
2006.05.18
15
INDOOR UNIT
187
138
184-1
235
735
896
2006.05.18
16
OUTDOOR UNIT
1
6
4
3
2
5
2006.05.25
17
OUTDOOR UNIT
10
13
11
9
17
18
15
14
8
2006.05.25
18
OUTDOOR UNIT
26
24
25
31
27
22
23
19
29
28
12
12
30
20
2006.05.24
19
OUTDOOR UNIT
38
37
36
35
33 34
2006.05.18
20
PARTS LIST
INDOOR UNIT
Ref.
Part No.
MC24Y3F
67200589
67220259
67200591
67200557
67200555
67200569
67200548
67200600
67200601
67200602
67200603
67220260
67220210
67206400
67220226
67220227
67220261
67200453
67200590
67200572
67203505
67203506
67203713
(K01AL-05L1HSE-C1)
Ord.
Q'ty
Ref.
No
Part No.
MC24Y3F
67200562
67200563
67200564
67200587
67207465
67200614
67200615
67200616
67200617
67200618
67200619
67200550
67200542
67200567
67201709
67201708
67200575
67500576
67500574
67200577
67200620
67200552
67230030
67200621
67200622
67200593
67200623
67200566
67200595
67200558
67200559
67200594
67220209
67220208
67200585
67200584
67200596
67200597
67200545
67200570
67200565
67200598
67200599
67200613
Ord.
Q'ty
Description
Description
No
32 Control Box Assy
34 Capacitor (Fan Motor)
61 Decoration Plate
71 Holder (Hook)
93 Filter
122 Holder(LouverSupporter)
127 Drain Hose
472-3 RFM (Grille)-C
472-4 RFM (Grille)-D
472-5 RFM (Grille)-E
474 Turbo Fan Assy
476-2 Washer(Turbo Fan)
479 Float Switch
481 Insulation (Grille)-A
481-1 Insulation (Grille)-B
482 Pump Unit
138 Separate wall
146-1 Evaporator-A Assy
146-2 Evaporator-B Assy
160 Kit (Drain Pan Sub Assy)
164 Motor, Induction
168 Cabinet-E
184-1 Thermistor Spring-A
187 Clamp No. 1219
195 Binder-C
484 Hook
487 Hinge Wire (Grille)
488 Drain Pan Plug
514 ControlBox Cover
522 Joint Gear
541 TerminalBase
541-1 TerminalCover
542 PanelBase
543 Holder (Panel Frame)
544 Holder (Panel Base)
545 Panel Frame
563 InnerBox
565 EvaporatorHolderAssy
625 Cord Bushing
690 Joint-A
692 Joint Shaft
705 LouverAssy
710 Intake Grille
731-2 Holder
735 Distributor Assy
777-1 Hook (Grille)-A
777-2 Hook (Grille)-B
798 Drain Pump Holder
803 Cabinet-D
197 Wind Guide Board
212 Clamp NK-4N
223 Control Box
226 Motor Gear
234 Room Temp. Thermistor
235 Pipe Temp. Thermistor
236 Controller PCB Assy
240 Remote Control Unit
244 Pipe CoverAssy
253-A Wire Assy
320-1 Wire Clamp Metal
334 Wire Cover
337-1 RFM (Eva. )-A
337-2 RFM (Eva. )-B
338 Motor Holder
380 Locking Spacer
381-4 Spacer
457 RFM (Drain Pan)
460-1 Pump Cover-A
460-2 Pump Cover-B
462 Panel(Top)Assy
464 Cabinet-A Assy
465 Cabinet-B Assy
467 Drain Port
468 M10 Nut-A (Large)
469 M10 Nut-B (Small)
472-1 RFM (Grille)-A
472-2 RFM (Grille)-B
67200604
67200605
67200606
67200607
67200608
67200609
67200610
67200573
67207455
67207464
67200503
67200611
67200612
67200592
67220206
67220207
67200551
67207462
67207463
67200560
67200561
814 Cabinet-C
815-1 Terminal-3P
815-2 Terminal-3P
834-1 Cover(Wire)-A
834-2 Cover(Wire)-B
835 Cushion (Pump)
847 LouverSupporter
858 Spring (Grille)
875 Power Supply PCB Assy
876-2 Motor,Step
896 Coupling Pipe Assy
2006.06.13
21
OUTDOOR UNIT
Ref.
Part No.
MR24UY3F
67201640
67201601
67201602
67201603
67201688
67201605
67201607
67201608
Ord.
Q'ty
Description
No
1
2
Top Panel Sub Assy
Front Panel
3
Fan Guard
4
Grip Side
5
6
Service Panel Sub Assy
Right Panel
8
9
Propeller Fan Assy
Motor, Induction
10 Condenser-A Assy
11 CoilChoke
12 Strainer Assy
13 Separate Wall Assy
14 Cap Foot
15 Base Assy
67201609
67201633
67201611
67201647
67201650
67201648
67201614
67201615
17 3-Way Valve Assy (3/8)
18 3-Way Valve Assy (5/8)
19 Check Joint Assy
20 CompressorAssy
22 4-Way Valve
67201616
67201689
67201619
67201681
67201621
67201622
67201690
67201691
23 Solenoid
24 Pressure Switch
25 Inlet Pipe Cond A Assy
26 Inlet Pipe Cond B Assy
27 Outlet Pipe Cond A Assy
28 Expansion Valve Assy
29 Coil (Expansion Valve)
30 Distributor
31 Discharge Pipe A Assy
33 Terminal2P
34 Terminal5P
35 ACTPM
36 Holder Thermo
67201692
67201422
67201693
67201694
67220181
67201632
67201627
67201628
37 Inverter PCB Assy
38 Power PCB Assy
---- Fuse 3.15A-250V
---- Thermistor (Outdoor Temp.)
---- Heat Exchanger Thermistor
---- Thermistor (Discharge)
---- Compressor Thermistor
---- Thermistor
67201695
67201696
67201697
67201686
67201698
67201635
67201637
67201430
---- Heatsink Thermistor
---- Transformer
---- Varistor
---- Arrester
---- Relay
---- Relay
---- Switch Push
---- Switch Slide
67201685
67201699
67201700
67201701
67201702
67201703
67201704
67201705
---- Drain Pipe Assy
---- Drain Cap
67201706
67201707
2006.05.25
22
STANDARD
ACCESSORIES
INDOOR UNIT ACCESSORIES
Name and Shape
Coupler heat
insulation
Q’ty
Application
For indoor side pipe joint
2
Tapping Screw
(flush heads)
For installing the remote
controller
2
4
4
Special nut A
(large flange)
For installing indoor unit
For installing indoor unit
For ceiling hole cutting
Special nut B
(small flange)
Template
1
1
Binder
(sm
For fixing the remote
controller cord
Blower cover insulation
Hook wire
For discharged air
2
2
For installing intake grille
Remote
controller
1
1
Remote controller cord
For connecting the remote
controller
OUTDOOR UNIT ACCESSORIES
Name and Shape
Drain pipe
Q'ty
Application
For outdoor unit drain
piping work (May not be
supplied, depending on
the model.)
1
Drain cap
5
2006.05.25
23
0605G3089
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