Friedrich MW09Y3H Building instructions

Models
MW09Y3HIndoor Units
Outdoor Units MR09Y3H
MW12Y3H
MR12Y3H
Service and Parts Manual

FRIEDRICH AIR CONDITIONING CO.
10001 Reunion Place, Ste. 500, San Antonio, TX 78216
[phone] 877-599-5665 x 261 FAX [phone]
Email: [email protected]
www.friedrich.com
Printed in the U.S.A.
TECHNICAL SUPPORT
CONTACT INFORMATION
FRIEDRICH AUTHORIZED PARTS DEPOTS
AAA Refrigeration Service
1322 24th Street, Suite B
Kenner, Louisiana 70062
504-464-7444
877-813-7444
Alamo Service Company
1450 North Flores Street
San Antonio, Texas 78212
210-227-2450
800-328-2450
The Gabbert Company
6868 Ardmore
Houston, Texas 77054
713-747-4110
800-458-4110
Johnstone Supply of Woodside
27-01 Brooklyn Queens Expway
Woodside, New York 11377
718-545-5464
800-431-1143
Reeve Air Conditioning, Inc.
2501 South Park Road
Hallandale, Florida 33009
954-962-0252
800-962-3383
CUSTOMER SATISFACTION and QUALITY ASSURANCE
Friedrich is a conscientious manufacturer, concerned about customer satisfaction, product quality, and
controlling warranty costs. As an Authorized Service Provider you play a vital role in these areas. By adhering
to the policies and procedures you provide us with vital information on each warranty repair you complete.
This information is used to identify product failure trends, initiate corrective action, and improve product
quality, thereby further reducing warranty expenses while increasing customer satisfaction levels.
1

2
S P E C I F I C A T I O N S
TYPE Cool & heat inverter
INDOOR UNIT MW12Y3H
OUTDOOR UNIT MR12Y3H
COOLING CAPACITY 11,500 BTU/h
(3.40 kW)
HEATING CAPACITY 14,000BTU/h
(4.11 kW)
POWER SOURCE 208 / 230 V
FREQUENCY 60 Hz
RUNNING
CURRENT
MAXIMUM
CURRENT
4.3 A
5.2 A
INPUT WATTS 0.92 kW
1.12 kW
E.E.R. Cooling 12.5 BTU/Wh
(3.69 kW/kW)
COP Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
12.5 BTU/Wh
(3.67 kW/kW)
MOISTURE REMOVAL 3.8 Pts/h (1.8 L/h)
AIR CIRCULATION HIGH 447 cfm (760 m3/h)
MW09Y3H
MR09Y3H
8,500 BTU/h
(2.50 kW)
10,000 BTU/h
(2.93 kW)
208 / 230 V
60 Hz
3.3 A
3.6 A
6.5 A
9.0 A
6.0 A
7.5 A
0.68 kW
0.76 kW
12.5 BTU/Wh
(3.68 kW/kW)
13.16 BTU/Wh
(3.86 kW/kW)
2.7 Pts/h (1.3 L/h)
FAN MOTOR
POWER SOURCE 230 V
High speed
INDOOR
UNIT
Cooling
Middle speed
Low speed
Quiet
High speed
INDOOR
UNIT
Heating
Middle speed
Low speed
Quiet
High speed
Middle speed
Low speed
Quiet
OUTDOOR UNIT Heating 650 r.p.m.
OUTDOOR UNIT Cooling
730 r.p.m.
1,300 r.p.m.
1,130 r.p.m.
900 r.p.m.
650 r.p.m.
1,300 r.p.m.
1,130 r.p.m.
950 r.p.m.
680 r.p.m.
760 r.p.m.
860 r.p.m.
ELECTRICAL DATA
INDOOR
UNIT
Cooling
High speed
Middle speed
Low speed
Quiet
INDOOR
UNIT
Heating
OUTDOOR UNIT Heating
NOISE LEVEL
43 dB
38 dB
33 dB
22 dB
43 dB
38 dB
33 dB
22 dB
43 dB
38 dB
33 dB
22 dB
43 dB
38 dB
33 dB
22 dB
46 dB 49 dB
OUTDOOR UNIT Cooling 46 dB 49 dB
COMPRESSOR TYPE
Hermetic type,
4 pole, 3 phase,
DC inverter motor, Rotary
DISCRIMINATION
DA89X1C-20FZ2
5SS072XAA
PRECHARGED REFRIGERANT
REFRIGERANT TYPE R410AR410A
30 oz (850 g)
30 oz (850 g)
25 oz (700 g)
25 oz (700 g)
WEIGHT (with oil) 20 lb (9.2 kg)13 lb (5.9 kg)
COMPRESSOR AND REFRIGERANT
Pipe length 49 ft (15 m)
FULL CHARGE 66 ft (20 m) 34 oz (950 g)
28 oz (800 g)
MAXIMUM PIPING HEIGHT 49 ft (15 m)
ADDITIONAL REFRIGERANT
0.21 oz/ft (20 g/m)
WEIGHT
INDOOR UNIT Shipping / Net
Shipping / Net
21 lb / 16.5 lb
(9.5 kg / 7.5 kg)
OUTDOOR UNIT
75 lb / 68 lb
(34 kg / 31 kg)
62 lb / 55 lb
(28 kg / 25 kg)
INDOOR UNIT H x W x D
H x W x D
11-1/32 x 31-3/32 x 7-25/32 inch
(280 x 790 x 198 mm)
OUTDOOR UNIT
21-1/4 x 25-31/32 x 11-13/32 inch
(540 x 660 x 290 mm)
DIMENSIONS

3
D I M E N S I O N S
unit : inch (mm)
11-1/32 (280)
7-25/32 (198)31-3/32 (790)
INDOOR UNIT
Refrigerant pipe length
Liquid : 15-3/16 inch (386 mm)
Gas : 12-15/16 inch (329 mm)
Drain hose length : 23-5/8 inch (600 mm)
Drain pipe diameter
Inside : 5/8 inch (15.8 mm)
Outside : 1-9/64 inch (29 mm)
OUTDOOR UNIT
25-31/32 (660)
18 (454)
21-1/4 (540)
11-13/32 (290)

4
R E F R I G E R A N T
S Y S T E M D I A G R A M
2-Way valve
Strainer
Strainer
3-Way valve
Muffler
4-Way valve
Expansion valve
Refrigerant direction
Heat exchanger
(indoor unit)
Heat exchanger
(outdoor unit)
Compressor
Cooling flow
Heating flow
Refrigerant pipe diameter
Liquid : 1/4" (6.35 mm)
Gas : 3/8" (9.52 mm)

5
RED
WHITE WHITE WHITE WHITE WHITE WHITE
BLUE
YELLOW
WHITE
BLACK
RED
BLACK BLACK
BLACK
BLACK
BLUE PINK
YELLOW ORANGE RED
GREEN
RED
WHITE
BLACK
CN1
1 2 3 4 5 1 2 3 4 5
1 2 3 4 5 6 7 8
1
2 3 4 5 6 7
1
2 3 4 5 6 7
1
2 3 4 5 6 7
1
2 3 4 5 6
1
2 3 4 5 6 1
2
1
2 3 4 5
1
2 3 4 5
1
2 3 4 5
1
2 3 4
1
2 3 4
CN8
CN3
CN201
CN5
CN4
CN7
CN6
CN2
W4
GEARTH
TERMINAL
TERMINAL BOARD
1 2 3
TEST
M
PIPE THERMISTOR
ROOM THERMISTOR
STEP MOTOR ( LOUVER )
F MFAN MOTOR
INDICATOR PCB ASSY
CONTROLLER
PCB ASSY
( MAIN PCB )
THERMAL FUSE 102
COMPRESSOR
FAN MOTOR
EXPANSION VALVE COIL
EXPANSION VALVE COIL
4-WAY VALVE COIL
G
POWER SOURCE
TERMINAL BOARD 123 L1 L2
FUSE
250V 20A
FUSE
250V 5A
or
or
PIPE THERMISTOR
DISCHARGE THERMISTOR
OUTDOOR THERMISTOR
REACTOR REACTOR
CONTROLLER PCB ASSY
CN62
BLACK
CN61
W10
W11
W7 W8
W9
CN800
CN40
CN501
W4 W2
W1
W3
1 2
3 4 5
6
7
1 2
3 4 5
6
7
1 2
3 4 5
6
1 2
3 4 5
6
1 2
1 2
1 2
3 4
1 2
3 4
1 2
3
1 2
3
BLACK
BLACK BLACK
BLACK BLACK
BLACK
BLACK
RED
WHITE
BLACK
BLACK
GREEN
WHITE
WHITE
RED
WHITE
RED
RED BLACK WHITE YELLOW BROWN
RED
BROWN BLUE ORANGE YELLOW WHITE
RED BLUE ORANGE
YELLOW
WHITE
BLACK BLACK
PMV
PMV 4WV
F M
C M
C(T)W
R(R)U
S(S)V
RED
WHITE BLACK
BLACK WHITE RED
C
R
S
C M COMPRESSOR
MR09Y3H
MR12Y3H
INDOOR UNIT OUTDOOR UNIT
C I R C U I T D IA G R A M

6
BLACK
BLACK
BLACK
BLACK
RED
ORANGE
YELLOW
PINK
BLUE
RED
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
RED
BLACK
WHITE
YELLOW
BLUE
6
5
4
3
2
1
1
2
3
4
5
6
7
8
1
2
3
4
5
1
2
3
4
5
6
7
1
2
3
4
5
1
2
3
4
1
2
3
4
5
6
7
THERMISTOR ( PIPE TEMP. )
THERMISTOR ( ROOM TEMP. )
CN4
1971032-4
CN5
1971032-5
CN3
1971032-7
CN6
B5B-PH-K-S
CN8
SJH20-08WSF
CN7
B5 ( 6-5 ) B-XARK
FAN MOTOR
TEST
CN201
JB20-07
STEP MOTOR
( LOUVER )
F. M.
M
THERMAL
FUSE 102
BLACK
WHITE
RED
GREEN
EARTH TERMINAL
TERMINAL BOARD
3
N
L
W4
12345
2 1
CN2
1871843-2
CN1
2013485-1
TO OUTDOOR UNIT
CONTROLLER PCB ASSEMBLY
MW09Y3H : K07AN-0907HSE-C1
MW12Y3H : K07AN-0908HSE-C1
INDICATOR PCB ASSEMBLY
K07BJ-0700HSD-D0
OPTION
CONTROL UNIT
MW09Y3H : EZ-00906HSE
MW12Y3H : EZ-00907HSE
I N D O O R P C B
C I R C U I T D I A G R A M

7
P32 P70 P71 P72 P73 P74 P75 P33 P63 P62 P61 P60
VDD
VSS
C
X1
X2
MD0
123
P
124
P
120
P
140
P
130
P
AV
DD
AV
SS
RST
P40
P41
P00
P01
P20
P21
P22
P23P24P25
P26P27
P10
P11
P12
P13 P14
P15 P16 P17 P30
P31
12 11 10 9 8 76 5 4 321
25 26 27 28 29 30 31 32 33 34 35 36
13
14
15 16 17 18 19 20 21
22
23
24
48
47
46 45 44 43 42 41 40
39
38
37
C24
0.1
<F>
5V
C17
0.1
<F>
X1
FCR8.0MC5T
8.00MHz
5V
R48 0R0
5V
5V
C41
0.1
<F>
R46
1.0k
<1/10W>
R45 10k <1/10W>
C50
1000p
<R>
15V-3
R37
47
<1/10W>
R25
10k
<1/10W>
1%
C25
1000p
<R>
R36
10k
<1/10W>
15V-2 340V
5V
R20
1.0k
<1/10W>
R21
10k
<1/10W>
C23
1000p
<R>
5V
15V
R29, R28, R27 270 <1/10W> x 3
15V
I C8
TNY274PN
C12
0.1
<F>
D7
1SS355
15V
5V
L2
BLm18
<BD102>
15V
JM1 0R0
15V-2 15V-3
R57 0R0
T1
MY082N D3
D1FL20U
C10
220/
25V
+C9
330/
25V
+
D4
D1FL20U
R8 1.0k <1/10W>
Q5 2SC4081 <R>
R11
27k
<1/10W>
R10
10k
<1/10W>
1%
R9
10k
<1/10W>
1%
C11
0.1
<F>
I C6
TL431 I Z-AP
C
AREF
3
2
1
Q6
2SA1576A
<R>
R6
150
<1/10W>
R7
1.0k
<1/10W>
5
6 7 8 S
S
S S
4
2 1
D
BP-M
EN-UV
1 3
2
5
3 2
4
10
9 8 7 6
A
D2
UF4007
R3
100k
<1/2W>
340V
C5
0.01
<ECQE>
R2
100
<1/4W>
C28
0.1
<F>
C31
0.1
<F>
15V
R38
1.0k
<1/10W>
R39
10k
<1/10W>
1%
R40
1.0k
<1/10W>
R41
49.9k
<1/10W>
1%
5V
L4
0R0 L6
0R0
L3
0R0
R43
10k
<1/10W>
BZ1 PS1240P02BT
B Z
I C13-7 uLN2003ADR
10 7
A
5V
C19
0.1
<F>
A
R44
10k
<1/10W>
I C12
S-93C56BD0 I
5V
C36
0.1
<F>
5V
R55
10k
<1/10W>
A
8
4
6 57
3 2
1VCC
DO
TEST GND NC
D I
SK CS
11 6
I C13-6 uLN2003ADR
R35 33 <1/2W>
15V
C29
1000p
<E>
R12
1.0k
<1/2W>
5V
JM2
0R0
5V
R15
1.0K
<1/10W>
C21
0.01
<B>
A
A
AA
R14
1.0k
<1/10W>
R13
10k
<1/10W>
Q1
RT1N241M
C20
0.01
<B>
I C13-1
uLN2003ADR
3
1
2
16 1
W4
18 14 10 5 4 3 2 1
A
10 54 3 2 1
14
18
2 3
1
4
+
D5
S1NBC60
-
+C4
68/
420V
9
8A
I C 1 3
uLN2003ADR
A
I C13-2 uLN2003ADR
I C13-3 uLN2003ADR
I C13-4 uLN2003ADR
I C13-5 uLN2003ADR
12
13
14
5
4
3
152
R31 - R34
47 <1/10W> x 4
A
A
1
3
2
A
I C 1
uPD78F0514AGA
A
A
A
A
AA
+C6
10/
25V
R26
8.2k
<1/10W>
1%
Q3 DTA124EUA
Q2
RT1N241M
2
3 1
2
3 1
A
340V
5V
A
R22 10k <1/10W>
R30
100k
<1/10W>
R19
10k
<1/10W>
R23, R42 1.0k <1/10W> x 2
AA
C15
0.1
<F>
C14
0.01
<B>
W-I N
W-OUT
5V 5V
R49, R51 10k <1/10W> x 2
A
A
R1
0R0
FH1 FH2
F1
FIH 250V 3.15A (EM)
VA1
470V
<ERZV>
C1
0.1
<LE>
C3
0.01
<F>
C2
0.01
<F>
L5
20*20*18
0.6A - 10mH
43
1 2
H I C 2
G K - L V 3 0 1 1 E 5
L1
SS11V-06180
A
A
W-I N
W-OUT
A
AA
A
1
2
3 4
5 6 7
1
2
3 4
5
5
4
3 2
1
1
2
3 4
5
1
2
1
3
5
4
3 2 1
8
7
6 5
4 3 2
1
CN2
1871843-2
TP00351-31 x 2
6
CN7 B5 (6-5) B-XARK-1
DC FAN MOTOR
CN3 1971032-7
TO INDICATOR PCB ASSY
CN5 1971032-5
STEP MOTOR ( LOUVER )
CN4
1971032-4
THERMISTOR ( PIPE TEMP. )
CN6
B5B-PH-K-S
TEST
TIMER SHORT SCK
DO
D I
TO TERMINAL BOARD
POWER RELAY DRAIVE
CN1
2013485-1
BLACK
WHITE
RED
TO TERMINAL BOARD FAN
( Vsp )
FAN
( Vcc )
CN8
SJH20-08WS
TO OPTION PCB ASSY
INDOOR UNIT CONTROLLER PCB ASSEMBLY ( MAIN PCB ) MW09Y3H : K07AN-0907HSE-C1 MW12Y3H : K07AN-0908HSE-C1
THERMISTOR ( ROOM TEMP. )

8
5V
5V
5V
+
I C201
GP1UM261RKVF
R202
47
<1/4W>
C202
47/
10V
C203
0.1
<F>
SW201
KSHG0611BT
CN201
07 JB20 / GIC
1061 L=230
A
A
A
A
1
2
3
4
5
6
7
2
1
3
VCC
OUT
GND
D201 SLR-343MC <GREEN>
D203 SLR-343YC <YELLOW>
D202 SLR-343DC <ORANGE>
MANUAL AUTO SWITCH
INDOOR UNIT
INDICATOR PCB ASSEMBLY
K07BJ-0700HSD-D0

9
RED BLACK
WHITE
YELLOW
BROWN BLACK BLACK RED BROWN BLUE
ORANGE
YELLOW
WHITE
UL3271 AWG16 x 3
RED
WHITE
BLACK
C. M. COMPRESSOR
4-WAY VALVE COIL
F. M. DC FAN MOTOR
EXPANSION VALVEM
1 2 3 4 5 6
7
1 2
1 2 3 4
1 2 3
1 2 3 4 5 6
CN40
B6B-XARK-1-A
RED
CN800
B5 ( 7-2.3 ) B-XASK-1-A ( LF ) SN
WHITE
CN501
MR09Y3H : 1747052-3
WHITE
MR12Y3H : 2-1747052-3
BLUE
REACTOR
UL3271 AWG14 x 2
WHITE
RED
W10
B B
W11
W1 B
W2 B W4 B W3 B
CN61 1971032-4
WHITE
CN62 1971032-3
WHITE
EARTH
F201
20A - 250V
F202
5A - 250V
UL1015 AWG16
GREEN
UL1015 AWG20
RED
UL1015 AWG14
WHITE
UL1015 AWG14
BLACK
BLACK BLACK BLACK
BLACK BLACK
BLACK
THERMISTOR ( DISCHARGE TEMP. )
THERMISTOR ( PIPE TEMP. )
THERMISTOR ( OUTDOOR TEMP. )
TERMINAL
SERIAL
N
L
TO INDOOR UNIT
POWER SOURCE
AC208 - 240V
50 / 60Hz
W103
UL1015 AWG20 BLACK
W100
UL1015 AWG20
WHITE
W102
UL1015 AWG20
BLACK
W101
UL1015 AWG14
BLACK
1
2
3 4
5
BW7
U
BW8
V
BW9
W
EMI FILTER
ZCAT2132-1130
CONTROLLER PCB ASSEMBLY
MR09Y3H : K07CJ-0925HUE-C1 MR12Y3H : K07CJ-0926HUE-C1
INVERTER ASSEMBLY MR09Y3H : EZ-009LHUE MR12Y3H : EZ-009MHUE
O U T D O O R P C B C I R C U I T D I A G R A M