Friedrich MR18Y3F User Manual

SPLIT TYPE  
ROOM AIR CONDITIONER  
WALL MOUNTED type  
Models  
Indoor unit  
Outdoor unit  
MW18Y3F MR18Y3F  
CONTENTS  
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . 1  
OUTLINE AND DIMENSIONS . . . . . . . . . . . 2  
REFRIGERANT SYSTEM DIAGRAM . . . . . 3  
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . 4  
INDOOR PCB CIRCUIT DIAGRAM . . . . . . 5  
OUTDOOR PCB CIRCUIT DIAGRAM . . . . 8  
ERROR CONTENTS . . . . . . . . . . . . . . . . . . 10  
DISASSEMBLY ILLUSTRATION . . . . . . . . 12  
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . 15  
STANDARD ACCESSORIES . . . . . . . . . . . 17  
DIMENSIONS  
Model : MW18Y3F / MR18Y3F  
(unit : mm)  
790  
215  
508  
20  
540  
790  
125  
66  
300  
2006.02.20  
2
REFRIGERANT SYSTEM DIAGRAM  
Model : MW18Y3F / MR18Y3F  
Heat exchanger  
3-Way  
valve  
( INDOOR )  
Muffler  
2-Way  
valve  
Sub-heat  
exchanger  
( INDOOR )  
4-Way valve  
Strainer  
Expansion valve  
Strainer  
Heat exchanger  
( OUTDOOR )  
Cooling  
Heating  
Refrigerant pipe diameter  
Liquid : 1/4" (6.35 mm)  
Gas : 1/2" (12.7 mm)  
2006.02.20  
3
CIRCUIT DIAGRAM  
CN201  
Model :  
MW18Y3F / MR18Y3F  
RED  
WHITE  
WHITE  
WHITE  
WHITE  
WHITE  
WHITE  
1
2
3
4
5
6
7
1 1  
2 2  
3 3  
4 4  
5 5  
6 6  
7 7  
1
2
3
4
5
INDOOR UNIT  
RED  
1 1  
2 2  
3 3  
4 4  
5 5  
1 1  
2 2  
3 3  
4 4  
5 5  
ORANGE  
YELLOW  
PINK  
STEP MOTOR  
M
BLUE  
BLUE  
YELLOW  
WHITE  
1 1  
2 2  
3 3  
4 4  
5 5  
6 6  
BLACK  
BLACK  
1
2
BLACK  
FM  
PIPE TEMPERATURE  
THERMISTOR  
RED  
FAN MOTOR  
BLACK  
BLACK  
1
2
SW  
POWER CIRCUIT  
ROOM TEMPERATURE  
THERMISTOR  
GRAY  
GRAY  
3 3  
2 2  
1 1  
VARISTOR  
FUSE  
3.15A  
THERMAL FUSE  
102  
G
1
2
3
TERMINAL  
OUTDOOR UNIT  
TO OUTDOOR UNIT  
REACTOR  
RED  
R(R)  
2
2
1
1
RED  
W7  
1
2
3
1
2
3
WHITE  
WHITE  
COMPRESSOR  
C M  
W8  
WHITE  
RED  
BLACK  
S(S)  
BLACK  
W10  
W11  
W9  
C(T)  
RED  
1
2
3
4
5
6
1
2
3
4
5
6
PIPE TEMP. THERMISTOR  
BLACK  
WHITE  
YELLOW  
BLUE  
BLACK  
1
2
3
4
1
CN801  
BLACK  
BROWN  
BROWN  
F M  
2
3
4
FAN MOTOR  
CN71  
DISCHARGE PIPE TEMP. THERMISTOR  
CONTROLLER PCB ASSY  
OUTDOOR TEMP. THERMISTOR  
BLACK  
1
2
3
1
RED  
BROWN  
BLUE  
ORANGE  
YELLOW  
WHITE  
1
2
3
4
5
6
1
2
3
4
5
6
2
3
CN70  
BLACK  
CN40  
CN30  
WHITE  
E V  
EXPANSION VALVE  
4-WAY VALVE  
RED  
W4  
WHITE  
FUSE  
5A-250V  
W2  
W1  
BLACK  
FUSE 20A-250V  
BLACK  
BLACK  
1
2
3
1
2
3
W3  
4WV  
TERMINAL  
1
3
4
5
2
(L) (N)  
G
TO INDOOR UNIT  
POWER SUPPLY  
2006.02.20  
4
INDOOR PCB CIRCUIT DIAGRAM  
Model : MW18Y3F  
CONTROL UNIT  
EZ-0051FHSE  
TERMINAL BOARD  
N
N
L
L
SERIAL  
OUTDOOR UNIT  
3
EARTH  
EARTH  
TERMINAL  
W3  
W2 W1  
RED  
BLACK WHITE  
CN7  
B3B-XASK  
CN11  
B2B-XH  
1
1
3
TERMINAL FUSE  
103  
2
EX-OUT  
EX-I N  
CN12  
B3B-XH  
1
EXTERNAL COMMUNICATION CONNECTOR  
CN10  
B5B-XASK  
3
CN10-1  
RED  
1
2
3
4
5
CN10-2  
CN10-3  
WHITE  
BLACK  
REMOTE CONTROL UNIT  
CN3  
S7B-ZR-3.4  
CN201  
JB20-07HG  
CONTROLLER PCB ASSY  
K04CP-0504WSE-C1  
CONTROLLER PCB ASSY  
ZHR-07  
CN3-1  
CN3-2  
CN3-4  
CN3-5  
CN3-7  
CN3-8  
CN3-9  
RED  
1
2
3
4
5
6
7
1
2
3
4
5
6
7
WHITE  
WHITE  
WHITE  
WHITE  
WHITE  
WHITE  
K04CP-0500HSE-C1  
INDICATOR PCB ASSY  
K02CB-0300HSE-D0  
CN8  
BS5P-SHF-1AA  
CN3-1  
1
2
3
4
5
CN6  
CN3-2  
CN3-3  
CN3-4  
CN3-5  
2P-SCN  
PIPE TEMPERATURE THERMISTOR  
ROOM TEMPERATURE THERMISTOR  
1
CN3-1  
CN3-2  
BLACK  
TEST  
2
BLACK  
CN5  
2P-SAN  
CN2-1  
CN2-2  
BLACK  
BLACK  
1
2
CN1  
S5 (6-5) B-XARK  
CN2  
53325-0510  
6
5
4
3
2
1
CN4-6  
RED  
CN7-1  
CN7-2  
CN7-3  
CN7-4  
CN7-5  
RED  
1
2
3
4
5
CN4-4  
CN4-3  
BLACK  
WHITE  
ORANGE  
YELLOW  
FAN MOTOR  
F. M.  
M
LOUVER  
CN4-2  
CN4-1  
YELLOW  
BLUE  
PINK  
BLUE  
2006.02.20  
5
Model : MW18Y3F  
CONTROLLER PCB ASSEMBLY  
K04CP-0500HSE-C1  
R29 10K  
<1/10W>  
CN7  
B3B-XASK  
5V  
IC2  
BD4842  
5V  
13.5V  
IC6  
NJM7805  
12V  
D6  
D1F60  
5V  
5V  
5V  
GND  
5V  
5V  
R44 1K  
<1/10W>  
CN6  
R39 10K  
<1/10W>  
R28 10K  
<1/10W>  
1
2
3
1
2
3
1
2
1
3
4
5
TERMINAL BOARD  
O
3
N
L
I
VDD  
NC  
NC  
C25  
0.1  
<F>  
G
R42 49.9K  
<1/10W>  
(1%)  
C46  
0.1  
<F>  
VOUT  
GND  
2
C20  
C22  
330/  
25V  
C23  
10/  
25V  
C24  
0.1  
<F>  
C26  
0.1  
C19  
330/  
25V  
+
+
+
RXD  
TXD  
VPP  
0.1  
W1  
W2  
BLACK  
W4  
W3  
RED  
HEAT EXCHANGER  
THERMISTOR  
WHITE  
GREEN  
<F>  
<F>  
JP1  
R43 1K  
<1/10W>  
CN5  
1
R23  
IC1  
UPD780058  
F1  
C45  
0.1  
<F>  
R41 10K  
<1/10W>  
(1%)  
3.15A - 250V  
2
VA1 270V  
<TNR>  
R18 5V  
61  
74  
REM  
WIR  
P00  
P01  
P02  
P03  
VDD0  
VDD1  
AVRF0  
AVRF1  
R16 R17 R19  
ROOM TEMPERATURE  
THERMISTOR  
5V  
R81 R82 R83  
62  
68  
75  
7
10K <1/10W> x4  
5V  
R15  
R20 10K <1/10W> x6  
AUTO RESTART  
63  
64  
65  
66  
73  
72  
76  
77  
78  
79  
80  
1
CN3  
JM7  
T1  
C11 0.01  
<F>  
S7B-ZR-3.4  
13.5V  
R80  
JM6 HOME AUTOMATION  
160V  
JP3JP4  
JP2  
60  
27  
28  
29  
30  
31  
32  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
8
ETS19AB1P8AG  
P04  
P05  
XT1  
XT2  
P10  
RST  
P50  
P51  
P52  
P53  
R4 100K C7 0.01  
<RS - 2W> <ECQE>  
JM5 ROOM TEMPERATURE  
CORRECTION 1  
R84  
R85  
R86  
R87  
ROOM TEMPERATURE  
CORRECTION 2  
JM4  
R8  
34K  
<1/10W>  
(1%)  
C15 R10  
0.01 47K  
<B> <1/10W>  
C3  
0.22  
<LE>  
JM3 CUSTOM CODE 1  
JM2 CUSTOM CODE 2  
20V  
INDICATOR PCB  
D2  
D3  
D1FL20U  
1NH42  
+
C
D1  
REF  
330 <1/10W> x6  
R89  
5V  
R9  
2
3
A
I C8  
TL431 I LP  
P11  
P12  
P13  
P14  
P15  
P16  
P17  
P20  
P21  
P22  
P23  
P24  
P25  
P26  
P27  
P30  
P31  
P32  
P33  
P34  
P35  
P36  
P37  
P40  
P41  
P42  
P43  
P44  
P45  
P46  
P47  
P54  
P55  
8.25K  
<1/10W>  
(1%)  
4
1
R2 2.2  
<RGG-5W>  
+
+
C10  
100/  
35V  
5
C5  
D
EN / UV  
+
S
S
R61 10K  
<1/10W>  
100/  
420V  
P56  
R11  
1K  
<1/10W>  
C80  
100 / 16V  
7
8
R60 47  
S
S
C6  
0.1  
<F>  
1
2
4
3
<1/10W>  
BP  
P57  
REM  
C12  
4700P  
<E>  
C81  
0.01  
<B>  
C60  
1000P  
<R>  
P60  
L1  
I C5  
TNY266P  
A
2
VA2 270V  
<TNR>  
P61  
12V  
9
3
P62  
4
3
1
2
11  
12  
13  
14  
15  
16  
17  
18  
IC4  
8
P63  
P64  
A
I C11  
5
12  
P65  
5V  
PS2501L-1  
<KD / KE>  
8
18  
IC4-7 LN2003  
P66  
IC3  
R24 10K  
<1/10W>  
15V  
IC7  
78M15  
20V  
P67  
8
4
6
5
1
CS  
VCC  
D0  
2
SK  
R3  
<1/2W  
1
K
RXD  
TXD  
1
3
3
P70  
D1  
I
O
TEST  
GND  
C27  
0.1  
<F>  
7
>
G
NC  
9
2
P71  
7
6
C17  
330/  
25V  
C18  
0.1  
C16  
0.1  
14  
10  
+
R6 100K  
<1/10W>  
P72  
5V  
MANUAL AUTO  
SWITCH  
(KSM0632B)  
44  
45  
46  
47  
48  
49  
50  
51  
19  
52  
53  
54  
55  
56  
57  
58  
59  
5
<F>  
<F>  
R22  
10K  
<1/10W>  
C29 10K  
C30 1000P <R>  
C31 1000P <R>  
P120  
P121  
P122  
P123  
P124  
P125  
P126  
P127  
P130  
P131  
IC  
12V  
A
IC9-2  
BA10393F 12V  
R21 1K  
<1/10W>  
10  
IC10  
Q2  
8
BZ1  
D7  
DAN202K  
C62  
0.1  
<F>  
6
5
DTC124EUA  
5V  
-
7
1
12V  
PKM13EPY-4000  
R63 15.4K  
<1/10W>  
(1%)  
3
IC9  
+
12V  
2
IC4-6 LN2003  
BZ  
4
R65 10K  
<1/10W>  
5V  
12V  
12V  
1
11  
6
D60  
CN10  
B5B-XASK  
2
3
-
R64 28K  
<1/10W>  
(1%)  
WIR  
D1F60  
R25 10K  
<1/10W>  
3
R38 10K  
<1/10W>  
+
R26 390  
<1/10W>  
IC9-1  
BA10393F  
5
4
3
2
1
RED  
5
4
3
2
1
5
12  
WHITE  
BLACK  
REMOTE  
CONTROL  
UNIT  
2
R62 10K  
<1/10W>  
5V  
C33  
0.01  
<B>  
JP5  
20  
21  
22  
23  
24  
6
R66 390  
<1/4W>  
(1%)  
Q1  
IC4-5 LN2003  
1
DTC124EUA  
D61  
71  
70  
69  
4
VPP  
JP SETTING  
R68 1K  
<1/10W>  
DAN217U R67 10K  
<1/10W>  
X1  
5V  
R27 390  
<1/10W>  
C34  
0.01  
<B>  
X2  
12V  
AGND  
GND0  
GND1  
IC4-4 LN2003  
IC4-3 LN2003  
IC4-2 LN2003  
13  
14  
15  
4
3
2
CN2  
53325-0510  
25  
26  
67  
33  
X1  
5.00MHz  
<CSTS>  
LOUVER  
IC4-1 LN2003  
1
16  
IC12  
PS2501L-1  
5V  
15V  
CN1  
S5 (6-5) B-XARK  
160V  
R51 1K  
<1/4W>  
(1%)  
<KD / KE>  
Q6  
C53  
100 / 16V  
1
2
4
DTC124EUA  
3
3
15V  
2
+
R50 330  
<1/10W>  
R52 820  
1
5V  
<1/4W>  
(1%)  
DC FAN MOTOR  
15V  
A
A
5V  
R32R31  
R54 10K  
<1/10W>  
CN8  
R55 4.7K  
<1/10W>  
4
1
2
D50  
RD27M  
<B>  
BS5P-SHF  
C50  
1000P  
<R>  
3
R53 1K  
<1/10W>  
R33  
R30 10K <1/10W> x4  
R37  
R36  
R35  
R34  
1
2
3
4
5
R56 6.8K  
<1/4W>  
TIMER SHORT CIRCUIT  
IC13  
PS2501L-1  
<KD / KE>  
A
CLOCK  
DO  
DI  
330 <1/10W> x4  
TEST  
C35 0.1 <F>  
C36 0.1 <F>  
C37 0.01 <B>  
C38 0.1 <F>  
2006.02.20  
6
Model : MW18Y3F  
INDICATOR PCB ASSY  
K03DV-0400WSE-D0  
5V  
5V  
D206 SLR-325  
CN201  
1
2
3
4
5
6
7
8
9
2
1
D204 SLR-325  
1
2
D203 SLR-325  
2
1
C201  
0.1  
<F>  
D201 SLR-325  
2
1
5V  
R201  
47  
<1/4W>  
VCC  
OUT  
GND  
2
1
I C201  
GP1UM261R  
3
C202  
47/  
+
10V  
2006.02.20  
7
OUTDOOR PCB CIRCUIT DIAGRAM  
Model : MR18Y3F  
INVERTER ASSEMBLY  
EZ-005SHUE  
EMI FILTER  
A
REACTOR  
UL3271 AWG16  
RED  
U
W7  
RED  
UL1015 AWG14  
B
B
B
BLACK  
W1 B  
( A-1 )  
UL3271 AWG16  
WHITE  
V
W8  
WHITE  
C. M.  
UL1015 AWG14  
WHITE  
W2 B  
( B-1 )  
UL3271 AWG16  
BLACK  
W
W9  
BLACK  
COMPRESSOR  
UL1015 AWG20  
RED  
W4  
B
( D-1 )  
1
2
3
BLACK  
BLACK  
CN30  
UL1015 AWG16  
GREEN  
B2P3-VH-B-C  
4-WAY VALVE  
W3  
B
BLACK  
UL3271 AWG14  
WHITE  
( C-1 )  
UL3271 AWG14  
RED  
N
L
1
2
UL1015 AWG20  
W100 WHITE  
TO  
INDOOR  
UNIT  
W10 W11  
UL1015 AWG20  
W103 BLACK  
B
B
F202  
5A-250V  
SERIAL  
3
UL1015 AWG20  
W102 BLACK  
UL1015 AWG14  
W101 BLACK  
4
5
AC208-230V  
60Hz  
F201  
20A-250V  
CONTROLLER PCB ASSY  
K05CM-0507HUE-C1  
TERMINAL  
1
2
3
4
5
6
RED  
BLACK  
CN801  
DC FAN MOTOR  
B5P6-VH-B-L  
WHITE  
F. M.  
WHITE  
YELLOW  
BROWN  
1
2
BLACK  
BLACK  
BROWN  
BROWN  
DISCHARGE TEMPERATURE THERMISTOR  
PIPE TEMPERATURE THERMISTOR  
CN71  
B04B-PASK-1  
3
4
WHITE  
1
2
3
4
5
6
RED  
BROWN  
BLUE  
CN40  
B6B-XARK-1-A  
EXPANTION VALVE  
M
ORANGE  
YELLOW  
WHITE  
1
2
3
BLACK  
BLACK  
RED  
CN70  
OUTDOOR TEMPERATURE THERMISTOR  
B03B-PASK-1  
WHITE  
2006.02.20  
8
Model : MR18Y3F  
CONTROLLER PCB ASSY  
K05CM-0507HUE-C1  
F100  
15A-250V  
C100-C102  
660/450V x 3  
15V  
L300  
ELC0607RA  
DC V  
R200 39  
<1/2W>  
U
V
W
REACTOR  
AC208 - 230V  
60Hz  
F4  
D102  
1NH42  
BET 3.15A-250V  
W7  
W8 W9  
U1JU44 x 3  
D200 D201  
PFC5000  
-0702F  
LL25XB60 x 2  
C6  
3.3/275V  
C4  
0.01/250V  
R103  
100  
<1/2W>  
FH2  
W10  
W11  
W1  
D202  
D100  
L
R104  
220K  
<2W>  
2
1
4
BLACK  
+
+
+
+
F50  
3A  
2
1
VA1 470V  
<TNR>  
2
Q100  
GT30J122  
3
R400  
R401  
R402  
R403  
0.20 <1W> 1% x 8  
-
1
C1  
0.1/  
275V  
C103  
0.1  
<HCP>  
FH1  
3
+
+
+
+
R102  
47K  
I C200  
PFC5000-0702F  
DCV-F  
VA2 470V  
<TNR>  
D101  
FSBS20CH60  
R1  
W5  
W6  
2
3
1
4
21  
4
3
1
2
3
4
5
6
7
8
9
ZPR0RCH400  
+
VCC  
NU  
R404  
R405  
R406  
R407  
-0  
COM  
W2  
15V  
C119  
0.1  
5V  
15V  
-
I N  
N
WHITE  
R126  
100K  
1%  
POW_GND  
C5  
0.01/250V  
L1  
22  
NV  
I N  
3
4
1
L130  
5V-2  
15V  
I N  
RCH4716-070PF07  
SA1  
12V  
2
I PM-G  
ELC0607RA  
VFO  
CFOD  
CSC  
I N  
PR / I C80-5  
<F>  
RA-302M  
NW 23  
DC V  
2
L100 BL02Rn1  
15V-2  
C104  
1
U
V
W
D105  
I C103-1  
BA4560  
W3  
K1  
C139  
2.2/  
50V  
C140  
0.1  
C120  
0.1  
<F>  
DAN217U  
+
EARTH  
G4A-1A  
or  
DW12D1  
3
R127  
R128  
2
3
10 VCC  
11 VB  
12 VS  
24  
25  
26  
27  
U
V
1
5
7
3
2
GREEN  
VCC  
R105 195K  
<RN-1/2W>  
1%  
-
1
-12V  
<F>  
GAT I N  
+
6
SO  
+
R153  
R155  
100K  
1%  
-12V  
10/  
25V  
S I  
D I  
NC  
HY I C1  
HU2001 or GK30434  
R121  
100K  
1%  
10K 1% x 2  
120K 1%  
R129  
100K 1%  
C137  
0.1  
I N  
13  
4
GND  
I C103-2  
BA4560  
14  
15  
16  
VCC  
VB  
5V  
C105  
0.1  
<F>  
6
5
R106 195K  
<RN-1/2W>  
1%  
6
5V  
-
+
7
7
I C100  
TA8316  
PFC / 58P  
<F>  
5
+
I C3-1  
BA4560  
R142  
1.2K  
1%  
VS  
W
P
5V  
R218 4.7K  
<1/10W>  
17 I N  
18  
I C102-2  
BA2901F  
R157  
4.7K  
C138  
R156  
100K  
1%  
+
I C3-2  
DC V  
10  
6
4
4
3
3
18  
8
14  
5
5
2
2
1
R124  
4.7K  
VCC  
2
R122  
BA4560  
7
1
-
19  
20  
1
VB  
VS  
R21  
10K  
<1/10W>  
7
+
-
R107  
3.83K  
1%  
3
11  
10  
1
W4  
5V  
390 <1/10W> x 6  
R204  
U / 50P  
+
+
13  
6
I C101  
TC 74HC00AF  
SERIAL  
5V  
-
R154  
120K  
2.2/50V  
R130  
R131  
10  
R123  
4.7K  
1% x 2  
RED  
I C102-4  
BA2901F  
R171  
220  
1%  
1
14  
R20 1.0K  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
R205  
R206  
R207  
R208  
R209  
5V  
V / 52P  
W / 54P  
X / 51P  
Y / 53P  
Z / 55P  
2
3
13  
12  
11  
10  
9
R210 1.0K  
1%  
C113  
2700P  
<B>  
<1/10W>  
ZXL / 37P  
S I / 48P  
C117  
1.0  
POW_GND  
R211  
4
5
6
7
R22 1.0K <1/10W>  
4.7K  
PFCAW / 35P  
PFCEN / 14P  
PFC-TRIP / 46P  
C142  
0.1  
<F>  
3
3
C214  
R132  
2.2K  
<B>  
C21  
0.047  
<B>  
C20  
0.1  
R23  
27K  
<1/10W>  
3
1
SO / I C80-2  
2200P  
<B>  
R212  
R213  
R214  
8
2
2
1
1
8
2
R167  
10K  
<F>  
Q103  
DTC143EUA  
D115  
D114  
DAN217U  
C218  
0.1  
<HCP>  
JM32  
JM31  
CN30  
DAN217U  
I PM-G  
5V  
R101  
4.7K  
3
C106  
B2P3-VH-B-C  
5V-2  
5V-2  
D106  
DAN217U  
5V-2  
0.1 <F>  
I PM-TRIP / 33P  
PFCEN / 14P  
1
2
CR30  
RE1201  
V4-AC / I C80-3  
C213  
C215-C217 0.022  
<F>  
R116  
15K  
1%  
R215  
R216  
4-WAY VALVE  
R219  
1.0K  
2=3  
R147 R150  
C219  
1000P  
<B>  
C141  
1000P  
<B>  
C206-C208  
R112  
2
1
R115  
R113 4.7K  
1%  
JM30  
1
2
10K  
1%  
22K 1%  
195K <RN-1/2W>  
1% x 4  
1
R118  
10K 1%  
D107  
RB751V  
R110  
6.8K  
12V  
3
2200P <B> x 6  
3
4
5
9
+
-
+
-
2
4
R217  
4
8
I PM-G  
15V  
R148  
R151  
I C102-3  
BA2901F  
K30  
FTR-F3  
or  
5V  
1 D301  
DAN217U  
D302 RB751V  
I C102-1  
BA2901F  
C107  
0.1  
<F>  
R1  
15K  
1%  
C108  
2.2/  
50V  
D119  
10K  
1%  
R117  
22K  
1%  
+
+
C130  
0.1  
R329 47K 1%  
C136  
0.01  
<F>  
R330  
4.7K  
1%  
5V  
R220  
1.0K  
R162  
68K  
1%  
5V  
2
<1W>  
1%  
x 7  
C110  
0.1  
<F>  
I C300-1  
BA4560  
G5NB-1A  
C135  
<F>  
R160  
68K  
1%  
15V  
DAN217U  
D110  
R163  
10K 1%  
ZXH / 36P  
3
2
1000P <B>  
R111  
10K  
-
I PM-CR / 9P  
1
3
+
R159  
4.7K  
15V  
2
1
DCV / 8P  
R328  
1.0K  
3
C311  
1000P  
<B>  
C111  
4700P  
<B>  
R164  
22K  
C320  
0.15  
R332  
4.7K  
1%  
+
1
-
R331  
47K 1%  
2
C112  
C109  
2.2/50V  
3
I C105-1  
BA2903F  
0.1  
<ECQB>  
C129  
1000P  
<B>  
R161  
1.5K  
1%  
I PM-G  
6
5
5
+
-
-
7
7
R165  
22K  
<F>  
5V  
6
+
R327  
22K  
R337  
5V  
15V  
2
1
5V  
5V  
I C5-2  
BA2903F  
CT / 3P  
POW_GND  
R339  
W
V
U
I C300-2  
BA4560  
10K  
C306  
0.1  
<F>  
5V  
C126  
2.2/  
C125  
0.1  
<F>  
C127  
2.2/  
50V  
C128  
0.1  
3
R334  
10K  
1%  
100K 1%  
+
3
+
D111 DAN217U  
R335 R336 R333  
10K 10K 10K  
1% 1% 1%  
R136 10K 1%  
R137 10K 1%  
R134  
10K  
1%  
R133  
10K  
1%  
D112  
DAN217U  
-12V  
R143  
39K  
1%  
50V  
R307 195K  
<RN-1/2W>  
<F>  
3
1
2
1
R138 10K 1%  
2
C305  
0.1  
<F>  
-
2
1
3
+
D109  
RB751V  
R140  
10K  
1%  
R135  
10K  
1%  
I C302-1  
BA2903F  
R144  
C330  
R338  
1%  
15V  
C133  
2.2/  
50V  
C339  
0.01  
<F>  
C131  
0.1  
<F>  
I C104-1  
22K 1%  
R145  
R168  
22K  
R169  
22K  
1000P  
<B>  
9
POW_GND  
DCV-F  
BA2904F  
-
6
8
1
-12V  
-
7
10  
Q300  
DTC114EUA  
2
R308 195K  
<RN-1/2W>  
+
-
ACV / 7P  
D113  
5
1
+
3
+
Q800  
DTC143EUA  
C800  
100/  
25V  
C123  
I C104-3  
2200P 22K 1% BA2902F  
15V  
5V  
2
I C104-2 D108  
BA2902F RB751V  
R801 1.0K  
<1/4W>  
15V  
D304  
D303  
C802  
0.1  
<F>  
3
1
C132  
2.2/  
50V  
C134  
0.1  
<F>  
3
R170  
68K  
I C104-4  
BA2902F  
+
15V  
+
C115  
0.1  
<F>  
DAN217U DAN217U  
<B>  
3
FANPWM / 2P  
2
R146  
R139  
10K  
1%  
R141  
10K  
1%  
Q801  
5V  
DAN217U  
C124  
39K  
2
1
DTA143EUA  
5V  
+
13  
12  
R802  
560  
C85  
R81  
1.0K  
5V  
-
2
1
2
1
14  
2200P  
1%  
+
+
L800  
C86  
470P  
<B>  
10/  
<B>  
C116  
0.1  
<F>  
<1/4W>  
BL02Rn1  
25V  
2
1
R803  
<1/16W>  
3
3
D600  
DAN217U  
6
5
R152  
4.7K  
1%  
R149  
4.7K  
1%  
5V  
10K  
COMP  
CN580  
CP-POS / 47P  
7
-
POW_GND  
3
R309  
5.76K  
1%  
<1/10W>  
-12V COMP  
C300  
100P  
<CH>  
FAN IN / 17P  
R83 27K  
<1/10W>  
C580  
0.1  
<F>  
I C302-2  
BA2903F  
C801  
R804  
1.0K  
CN801  
1
2
3
B10B-PASK-1  
R311  
8.66K  
1%  
R582  
10K  
R581  
10K  
R583 R584  
1.0K 22K  
5V  
WHITE  
0.01  
<F>  
R504 10K  
<1/10W>  
SERVICE  
JM501  
B5P6-VH-B-L  
1
2
3
4
5
6
R503  
10K  
R310  
143  
1%  
WHITE  
C84  
C87  
T AUX / 25P  
0.1 <F> 330P <B>  
T AUX  
T TXD  
T RXD  
DC V - F  
T TXD / 60P  
T RXD / 61P  
T MODE / 18P  
T AUX3 / 21P  
T CK / 62P  
15V  
D50  
4
5
6
7
R502  
1.0K  
R500  
10K  
I C500  
MB90460  
SERVICE  
JM500  
FAN MOTOR  
17 P63  
FAN IN / 17P  
VCC 56  
AVCC 11  
P00 25  
P01 26  
P17 40  
P13 36  
P14 37  
P15 38  
T MODE  
16 P62  
P46  
35 P12  
P50  
R52  
470K  
<1/8W>  
1%  
1SS355  
FANPWM / 2P  
PFCSW / 35P  
CT / 3P  
TEST / 59P  
PFC / 58P  
T AUX / 25P  
2
T AUX3  
T CK  
T60  
RPZ-1F  
15V  
12V  
R56  
150K  
<2W>  
C52  
2200P  
<E>  
D60  
D1FL20U  
8
9
12V  
L40  
5mmJP  
12V  
3
E2SK / 40P  
ZXH / 36P  
ZXL / 37P  
1
2
10  
9
/ T RES / 19P  
CN40  
59 P37  
58 P36  
60 P40  
21 MD2  
/ T RES  
I C40  
TD62064  
C64  
330/  
25V  
1
2
3
4
5
6
B6B-XARK-1-A  
10  
+
3
4
5
8
/ T ICS  
RED  
T TXD / 60P  
T AUX3 / 21P  
R53  
510K  
<1/8W>  
x 3  
D51  
UDZS8.2B  
R585  
1.0K  
D61  
7
6
R40  
R41  
R42  
R43  
2
7
9
3
6
EPV3 / 44P  
EPV4 / 43P  
EPV2 / 42P  
EPV1 / 45P  
39  
P16  
E2D I / 39P  
O1  
I C60  
BA7805  
D63  
1SS355  
I 1  
R57  
0R0  
D1FL20U  
5V  
I C570  
BR93LC46  
34  
AVR 12  
P24 45  
P25 46  
P30 50  
P31 51  
P32 52  
P33 53  
P11  
47 P26  
27  
O2  
I 2  
O3  
11  
14  
1
CP-POS / 47P  
V4-AC / 27P  
ACFAN / 28P  
V4-DC / 29P  
LED / 30P  
PR / 31P  
SO / 32P  
I PM-TRIP / 33P  
EPV1 / 45P  
PFC-R RIP / 46P  
U / 50P  
I 3  
EXPANSION VALVE  
16 O4  
P02  
I 4  
C65  
470/  
25V  
E2CS / 41P  
E2SK / 40P  
E2D I / 39P  
1
2
3
8
4
7
5
L50  
CS  
VCC  
DO  
NC  
+
4
GND1  
28 P03  
29 P04  
30 P05  
31 P06  
32 P07  
33 P10  
5V  
+
R61  
1.0K  
COM1  
1.5K <1/10W> x 4  
D62  
SK  
D I  
BLm21AG610  
x 2  
R54  
R55  
5
GND2  
8
X / 51P  
V / 52P  
Y / 53P  
W / 54P  
COM2  
D1FL20U  
12V  
12  
10  
15  
GND3  
C570  
0.1  
<F>  
D53  
UF4005  
NC1  
NC2  
6
NC  
GND  
1
O
3
I
C40  
0.1  
<F>  
13 GND4  
G
2
D80  
P34  
P35  
P60  
54  
55  
14  
L51  
C67  
0.1  
<F>  
C68  
100/  
25V  
5V  
SLR-332  
Z / 55P  
C66  
+
<RED>  
C572  
0.01 <F>  
57  
C
R570  
10K  
100/  
25V  
PFCEN / 14P  
L70  
BL02Rn1  
CN71  
E2CS / 41P  
EPV2 / 42P  
EPV4 / 43P  
EPV3 / 44P  
41 P20  
42 P21  
43 P22  
44 P23  
10 P57  
P61 15  
MD0 18  
MD1 20  
I C80  
uLN2003  
D52  
1SS355  
I C50  
TOP243P  
R80  
2.2K  
1
2
3
4
T MODE / 18P  
PIPE TEMP.  
THERMISTOR  
LED / 30P  
SO / 32P  
V4-AC / 27P  
V4-DC / 29P  
PR / 31P  
16 1C  
1B  
2B  
3B  
4B  
5B  
6B  
7B  
E
1
2
3
4
5
6
7
8
5V  
1
2
3
4
8
M
S
S
C
S
MD1 / 64P  
MD2 / 63P  
TCK / 62P  
TRXD / 61P  
MD0 / 1P  
P44  
64  
SO / I C80-2  
15 2C  
R51  
47  
R75  
10K  
C69  
100/  
25V  
S
7
P43 63  
P42 62  
P41 61  
10K x 4  
R92R91  
+
DISCHARGE TEMP.  
THERMISTOR  
V4-AC / I C80-3  
V4-DC / I C80-4  
PR / I C80-5  
14 3C  
13 4C  
12 5C  
11 6C  
D64  
1SS355  
9
8
7
5
6
4
P56  
P55  
P54  
P52  
P53  
I PM-CR / 9P  
DCV / 8P  
ACV / 7P  
TE / 5P  
TA / 6P  
TD / 4P  
TE / 5P  
TD / 4P  
TA / 6P  
R93  
R90  
5
D
R71  
4.75K  
1%  
R72  
6.65K  
1%  
C71  
0.1  
<F>  
AOUS09LAC  
JM101  
JM102  
JM103  
JM100  
C50  
47/  
35V  
P45  
1
19  
48  
C51  
1.0  
<B>  
+
R76  
10K  
ACFAN / I C80-6  
ACFAN / 28P  
/ T RES / 19P  
S I / 48P  
RSTX  
P27  
MD0 / 1P  
7C  
10  
CN70  
MD1 / 64P  
MD2 / 63P  
TEST / 59P  
9
COM  
12V  
1
2
3
C503  
0.1  
<F>  
AGND 13  
P51  
TEST  
-12V  
C72  
0.1  
<F>  
5V  
R560  
100K  
R561  
1.0K  
22 X0  
23 X1  
3
24  
GND  
OUTDOOR TEMP.  
THERMISTOR  
R77  
10K  
GND 49  
2
1
NC  
3
4
VDD  
POW_GND  
1
AOUS12LAC  
JM101  
JM102  
JM103  
JM100  
C500  
0.1  
<F>  
OUT GND  
C75  
0.1  
<F>  
+
C73  
0.1  
<F>  
X500  
8.00MHz  
<CSTS>  
C502  
0.1  
<F>  
C561  
0.01  
<F>  
I C560  
S80842  
2
TEST  
R73  
38.3K 1%  
C501  
10/25V  
2006.02.20  
9
ERROR CONTENTS  
Model : MW18Y3F / MR18Y3F  
Self-diagnosis function table (Flashing LED Display)  
* Detailed Trouble Display (secondary level) can be indicated by pressing Test Operation button.  
Detailed Trouble Display (by Test Button)  
Trouble Display (primary)  
Detailed Error Item  
Error  
Operation  
Timer  
Error  
Operation  
Timer  
When a signal is not read continuously for 10 secs  
from power relay ON immediately after operation starts  
>>Cooling 0 code transmission, automatic reset  
When a signal is not read for 20 secs thereafter  
>>Trouble display continues and power relay OFF  
>>Permanent stop  
Serial signal  
error  
Normal  
1 sec  
blinking  
Serial reverse signal error  
at operation start up  
0.1sec  
blinking  
0.5sec  
2 times  
Signal reverse signal error  
during operation  
0.1sec  
blinking  
0.5sec  
2 times  
When a signal is not read continuously for 10 secs  
from power relay ON immediately after operation starts  
>>Cooling 0 code transmission, automatic reset  
When a signal is not read for 20 secs thereafter  
>>Trouble display continues and power relay OFF  
>>Permanent stop  
Serial forward signal error  
at operation start up  
0.1sec  
blinking  
0.5 sec  
4 times  
Normal Serial Forward Signal can not be  
received more than 10 secs  
>>Releases when it becomes normal  
Serial forward signal error  
during operation  
0.1sec  
blinking  
0.5sec  
5 times  
Normal Serial Forward Signal can not be  
received more than 10 secs ( after receiving  
effective forward transfer signal)  
>>Releases when it becomes normal  
Indoor unit  
thermistor  
error  
0.5sec  
2 times  
0.1sec  
blinking thermistor open  
Indoor temperature  
0.5sec  
2 times  
Thermistor detection value is open when  
AC plug is inserted  
0.1sec  
blinking  
>>Releases when value becomes normal  
Pipe thermistor  
open or short  
0.1sec  
blinking  
0.5sec  
3 times  
Thermistor detection value is open or short  
when AC plug is inserted  
>>Releases when value becomes normal  
Thermistor detection value is open or short  
Outdoor unit 0.5sec  
0.1sec  
blinking open or short  
Discharge thermistor  
0.1sec  
blinking  
0.5sec  
2 times  
thermistor  
error  
3 times  
>>Outdoor unit stops  
Releases when it becomes normal  
Heat exchanger  
thermistor open  
0.1sec  
blinking  
0.5sec  
3 times  
Thermistor detection value is open  
>>Outdoor unit stops  
Releases when it becomes normal  
Outdoor temperature  
thermistor open or short  
0.1sec  
blinking  
0.5sec  
4 times  
Thermistor detection value is open or short  
>>Outdoor unit stops  
Releases when it becomes normal  
Forced automatic SW  
welded  
0.5sec  
2 times  
Forced Auto SW is ON for more than  
10 secs continuously  
Indoor unit  
control error  
0.5sec  
4 times  
0.1sec  
blinking  
0.1sec  
blinking  
>>Error is indicated while it is ON  
Normal Operation other than error indication  
Main relay welded  
0.1sec  
blinking  
0.5sec  
3 times  
Serial Reverse Signal is received 1 min.  
after Main relay becomes OFF  
>>Error is indicated while serial reverse  
signal is input on normal operation  
Normal operation except error indication  
Power interruption error  
0.1sec  
blinking  
0.5sec  
4 times  
50/60Hz is not detected after 4 secs of  
power ON.  
>>Error is indicated and unit is stopped  
2006.02.20  
10  
Detailed Trouble Display (by Test Button)  
Trouble Display (primary)  
Detailed Error Item  
Error  
Operation  
Timer  
Error  
Operation  
Timer  
Outdoor unit  
control error  
0.5sec  
5 times  
1 sec  
blinking  
Current trip  
0.1sec  
blinking  
0.5sec  
2 times  
Current trip error is 2nd time within  
start up  
>>Permanent stop  
CT abnormal  
0.1sec  
blinking  
0.5sec  
3 times  
Current detection value is 0A for more  
than 1 sec when compressor is  
operated at more than 56rps  
>>Automatic release after 3 min. ST  
Compressor rotation  
error  
0.1sec  
blinking  
0.5 sec  
5 times  
Compressor location detection error (incl.  
failed start up) for 3 times  
>>Permanent stop  
Outdoor unit fan drive  
system abnormal  
0.1sec  
blinking  
0.5sec  
6 times  
When outdoor fan abnormal fan motor  
duty abnormal operated 5 times  
>>Permanent stop  
Indoor fan  
motor error  
0.5sec  
6 times  
0.1sec  
blinking  
Abnormal lock  
0.1sec  
blinking  
0.5sec  
2 times  
Detected rotation is 0 r.p.m. at start up or  
at 56 secs after Fan mode is selected  
>>Permanent stop  
Abnormal rotation  
Discharge temperature  
0.1sec  
blinking  
0.5sec  
3 times  
Detected rotation is 1/3 of target r.p.m. at  
start up or at 56 secs after Fan mode is  
selected  
>>Permanent stop  
Refrigerant  
cycle error  
0.5sec  
7 times  
0.1sec  
0.1sec  
blinking  
0.5sec  
2 times  
Discharge Temperature protection  
(Discharge temperature is 110degC)  
operated 2 times  
blinking abnormal  
>>Permanent stop  
Cooling high pressure  
abnormal rise  
0.1sec  
blinking  
0.5sec  
3 times  
High pressure rise protection (Outdoor  
heat exchanger temperature is 65degC)  
operated  
>>Comp. OFF (releases after 3min.ST)  
Error is indicated while 3 min.ST  
Optional  
function  
error  
0.5sec  
8 times  
0.1sec  
Active filter voltage  
0.1sec  
blinking  
0.5sec  
2 times  
Active Filter voltage error operated 3 times  
blinking abnormal (3rd time)  
>>Permanent stop  
Active filter foltage  
abnormal (1st time)  
0.1sec  
blinking  
0.5sec  
3 times  
Active Filter Module error or open  
detection protection operated  
>>Automatic release after 3 min. ST  
2006.02.20  
11  
DISASSEMBLY ILLUSTRATION  
Model : MW18Y3F  
2006.02.20  
12  
Model : MW18Y3F  
2006.02.20  
13  
Model : MR18Y3F  
2006.02.20  
14  
PARTS LIST  
INDOOR UNIT  
Part No.  
Ref.  
Ord.  
Q'ty  
Description  
No.  
MW18Y3F  
1
2
Air Filter  
9309997011  
9312152018  
9306602017  
9306755010  
9309999053  
9313566043  
9309994003  
9311354079  
Filter (Electric + ION)  
Holder (Filter)  
Clamper (Grille)  
Front Panel  
4
5
6
7
Intake Grille Assy  
Gear-A  
20  
21  
Casing Assy  
24  
26  
27  
28  
29  
30  
32  
33  
Crossflow Fan Assy  
Clamp (Motor)  
9307836015  
9310102008  
9306628017  
9314147012  
9314493010  
9311946014  
9313943011  
9313099015  
Shaft Holder-C Assy  
Drain Hose Assy  
Drain Cap Assy  
Wire Clamper  
Cover (Switch)  
Evaporator Total Assy  
36  
37  
38  
39  
40  
42  
43  
46  
Joint Pipe Assy  
Insulation (Pipe)-E  
Holder (Evaporator)-L Assy  
Holder (Evaporator)-R  
Water Seal  
9313792015  
9304607007  
9313174019  
9309983014  
9312912018  
9310611005  
9701955114  
9900139025  
Air Seal  
Terminal  
Step Motor  
48  
51  
52  
Fan Motor Assy  
Remote Control Unit  
Bracket Panel  
9602109012  
9315260017  
9310001004  
61-1 Flow Control Panel-U  
61-2 Flow Control Panel-Z  
9309991033  
9309992030  
236  
Controller PCB Assy  
9707193015  
(K04CP-0500HSE-C1)  
9702039042  
---  
---  
Pipe Temperature Thermistor  
Room Temperature Thermistor  
9700801108  
---  
---  
Indicator PCB Assy  
Evaporator B Assy  
9705039032  
9311275022  
When you order parts, please make a photocopy of this page  
and fill the number of the parts in the "Order" column.  
2006.02.20  
15  
OUTDOOR UNIT  
Part No.  
Ref.  
Ord.  
Q'ty  
Description  
No.  
MR18Y3F  
1
2
3
4
5
6
7
8
Top Panel Assy  
Top Panel Seal  
Cabinet Sub Assy  
Blow Down Grille  
Cabinet Right Assy  
Fan Ring  
9309230057  
9309228016  
9314809040  
9308884015  
9309236011  
9308885012  
9308880017  
9309237049  
Grip  
Switch Cover Assy  
10  
11  
12  
13  
14  
15  
16  
18  
4-Way Valve  
9970056017  
9311641018  
9311440017  
9311382027  
313728262708  
9300089012  
9309909014  
9308872012  
Expansion Valve Assy  
Strainer  
Condenser Assy  
Thermistor Spring-A  
Thermistor Spring-A  
Propeller Fan  
Motor Bracket  
19  
20  
21  
22  
24  
25  
26  
29  
Separator  
9312971015  
9308869081  
9315159014  
9313064013  
9307271014  
9703874024  
9707039085  
0600382018  
Base Assy  
3-Way Valve Assy  
2-Way Valve Assy  
Cord Clamp  
Terminal  
Inverter PCB Assy  
Fuse  
32  
34  
35  
36  
37  
39  
---  
---  
Expansion Valve Coil  
Fan Motor  
9900057039  
9602133017  
9313764012  
9312661015  
9900148027  
9970033025  
9705720015  
9900210045  
Compressor Assy  
Emblem Rear  
Heat Exchanger Thermistor  
Solenoid Coil  
IPM  
Outdoor Temp. Thermistor  
---  
---  
Thermistor  
9900041014  
9900148027  
Thermistor Assy  
When you order parts, please make a photocopy of this page  
and fill the number of the parts in the "Order" column.  
2006.02.20  
16  
STANDARD  
ACCESSORIES  
Part No.  
Name and Shape  
MW18Y3F  
Wall hook bracket  
9312752010  
9314990038  
Remote control  
unit  
Remote control  
unit holder  
9305642014  
0600185534  
Battery (penlight)  
Cloth tape  
9310519004  
0700076046  
0700019036  
Tapping screw (big)  
(
4 x 25)  
Tapping screw (small)  
3 x 12)  
(
Air cleaning filter  
9312153015  
9311925033  
Air cleaning filter  
frame  
9306602017  
9304536000  
Seal A  
2006.02.20  
17  
0511G2952  

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