Friedrich MWM09Y1J User manual

Service Manual
MWM09Y1J/MRM09Y1J
MWM12Y1J/MRM12Y1J
(Refrigerant R410A)
Models:

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Table of Contents
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6XPPDU\ ......................................................................................................................1
6SHFL¿FDWLRQV ..........................................................................................................2
2.1 Specification Sheet ...........................................................................................................2
2.2 Operation Characteristic Curve ........................................................................................4
2.3 Capacity Variation Ratio According to Temperature .........................................................4
2.4 Cooling and Heating Data Sheet in Rated Frequency .....................................................5
2.5 Noise Curve ......................................................................................................................5
2XWOLQH'LPHQVLRQ'LDJUDP ........................................................................6
3.1 Indoor Unit ........................................................................................................................6
3.2 Outdoor Unit .....................................................................................................................6
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(OHFWULFDO3DUW...........................................................................................................8
5.1 Wiring Diagram .................................................................................................................8
5.2 PCB Printed Diagram .....................................................................................................10
)XQFWLRQDQG&RQWURO ......................................................................................12
6.1 Remote Controller Introduction .....................................................................................12
6.2 Brief Description of Modes and Functions ......................................................................15
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,QVWDOODWLRQ ................................................................................................................23
8.1 Installation Dimension Diagram ......................................................................................23
8.2 Installation Parts-checking ............................................................................................25
8.3 Selection of Installation Location ....................................................................................25
8.4 Electric Connection Requirement ..................................................................................25
8.5 Installation of Indoor Unit ................................................................................................25
8.6 Installation of Outdoor Unit .............................................................................................27
8.7 Vacuum Pumping and Leak Detection ...........................................................................29
8.8 Check after Installation and Test Operation ...................................................................29

6HUYLFH0DQXDO
Table of Contents
0DLQWHQDQFH ............................................................................................................30
9.1 Error Code List ...............................................................................................................30
9.2 Troubleshooting for Main Malfunction ............................................................................38
9.3 2-way, 3-way Valve Appearance .....................................................................................47
9.4 Troubleshooting for Normal Malfunction .........................................................................54
([SORGHG9LHZDQG3DUWV/LVW ..............................................................56
10.1 Indoor Unit ....................................................................................................................56
10.2 Outdoor Unit .................................................................................................................58
5HPRYDO3URFHGXUH .......................................................................................60
11.1 Removal Procedure of Intdoor Unit ..............................................................................60
11.2 Removal Procedure of Outdoor Unit ............................................................................66
$SSHQGL[ ........................................................................................................................70
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................70
Appendix 2: Configuration of Connection Pipe .....................................................................70
Appendix 3: Pipe Expanding Method ...................................................................................71
Appendix 4: List of Resistance for Temperature Sensor ......................................................72

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Technical Information
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Technical Information
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Model MWM09Y1J
MRM09Y1J
MWM12Y1J
MRM12Y1J
Product Code CB146035101_L13396 CB146035001_L13396
Power
Supply
Rated Voltage V~ 115 115
Rated Frequency Hz 60 60
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity (Min~Max) Btu/h 9000(3500~11000) 11800(3300~12500)
Heating Capacity (Min~Max) Btu/h 9800(2500~11000) 13000(3400~13500)
Cooling Power Input (Min~Max) W 750(220~1100) 1260(260~1340)
Heating Power Input (Min~Max) W 830(230~1230) 1320(250~1360)
Cooling Power Current A 9 15
Heating Power Current A 9.5 15.5
Rated Input W 1230 1360
Rated Current A 17.0 18.2
Air Flow Volume(SH/H/M/L/SL) CMF 330/277/224/188/- 341/288/235/200/-
Dehumidifying Volume Pint/h 1.69 2.96
EER (Btu/h)/W 12 9.4
COP (Btu/h)/W 12 9.8
SEER (Btu/h)/W 16 16
HSPF (Btu/h)/W 8.6 8.6
Application Area yd214.4-21.5 19.14-28.7
Indoor
Unit
Model of indoor unit MWM09Y1J MWM12Y1J
Product Code CB146N35100_L13396 CB146N35000_L13396
Fan Type Cross-flow Cross-flow
Diameter Length(DXL) inch Φ3 5/8X23 3/8 Φ3 5/8X23 3/8
Fan Motor Cooling Speed (SH/H/M/L/SL) r/min 1300/1100/900/700/- 1350/1150/950/750/-
Fan Motor Heating Speed (SH/H/M/L/SL) r/min 1300/1150/980/820/- 1350/1200/1000/850/-
Output of Fan Motor W 15 15
Fan Motor RLA A 0.38 0.38
Fan Motor Capacitor μF 4 4
Input of Heater W / /
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ2/7 Φ2/7
Row-fin Gap inch 2-1/18 2-1/18
Coil Length (LXDXW) inch 24X17/18X11 4/7 24X17/18X11 4/7
Swing Motor Model MP24BA MP24BA
Output of Swing Motor W 2.4 2.4
Fuse A 3.15 3.15
Sound Pressure Level (SH/H/M/L/SL) dB (A) 41/37/35/32/- 43/39/35/32/-
Sound Power Level (SH/H/M/L/SL) dB (A) 51/47/45/42/- 53/49/45/42/-
Dimension (WXHXD) inch 30 1/3X11 1/7X8 30 1/3X11 1/7X8
Dimension of Carton Box (LXWXH) inch 33 2/9X13 1/2X10 2/7 33 2/9X13 1/2X10 2/7
Dimension of Package (LXWXH) inch 33 1/3X13 4/7X10 6/7 33 1/3X13 4/7X10 6/7
Net Weight lb 19 19
Gross Weight lb 23 23


Technical Information
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The above data is subject to change without notice. Please refer to the nameplate of the unit.
Outdoor
Unit
Model of Outdoor Unit MRM09Y1J MRM12Y1J
Product Code CB146W0431_L13396 CB146W0451_L13396
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO., LTD
ZHUHAI LANDA COMPRESSOR
CO., LTD
Compressor Model QXA-A091ZE190 QXA-A091ZE190
Compressor Oil FVC68D FVC68D
Compressor Type Rotary Rotary
L.R.A. A / /
Compressor RLA A 6 6
Compressor Power Input W 980 980
Overload Protector 1NT11L-6233 1NT11L-6233
Throttling Method Electron expansion valve Electron expansion valve
Operation temp ºF 61~86 61~86
Ambient temp (cooling) ºF 64~113 64~113
Ambient temp (heating) ºF 5~75 5~75
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ2/7 Φ2/7
Rows-fin Gap inch 2-1/18 2-1/18
Coil Length (LXDXW) inch 29 8/11X1X19 8/17 29 8/11X1X19 8/17
Fan Motor Speed rpm 900 900
Output of Fan Motor W 30 30
Fan Motor RLA A 0.17 0.17
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit CFM 1059 1059
Fan Type Axial-flow Axial-flow
Fan Diameter inch Φ15 10/13 Φ15 10/13
Defrosting Method Auto Defrosting Auto Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IP24 IP24
Design Pressure(High) PSIG 550 550
Design Pressure(Low) PSIG 240 240
Sound Pressure Level (H/M/L) dB (A) 53/-/- 55/-/-
Sound Power Level (H/M/L) dB (A) 63/-/- 65/-/-
Dimension (WXHXD) inch 33 2/5X21 1/4X12 3/5 33 2/5X21 1/4X12 3/5
Dimension of Carton Box (LXWXH) inch 34 4/7X14 1/6X22 5/6 34 4/7X14 1/6X22 5/6
Dimension of Package (LXWXH) inch 34 2/3X14 2/7X23 3/7 34 2/3X14 2/7X23 3/7
Net Weight lb 68 68
Gross Weight lb 77 77
Refrigerant R410A R410A
Refrigerant Charge oz 35.28 35.28
Connecti
on Pipe
Length ft 24.6 24.6
Gas Additional Charge oz/ft. 0.21 0.21
Outer Diameter Liquid Pipe inch Φ1/4 Φ1/4
Outer Diameter Gas Pipe inch Φ3/8 Φ3/8
Max Distance Height ft 32.8 32.8
Max Distance Length ft 49.2 49.2

Technical Information
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Cooling Heating
0
1
2
3
4
5
6
7
8
9
10
0 20 40 60 80 100 120
Condition
Indoor:DB 80°F
WB67 °F
Indoor air flow: Super High
Pipe length:24.6ft
0
1
2
3
4
5
6
7
8
0 20 40 60 80 100 120
Condition
Indoor:DB 70°F
Indoor air flow: Super High
Pipe length:24.6ft
Current(A)
Current(A)
Compressor Frequency(Hz) Compressor Frequency(Hz)
WB60 °F
Heating
Cooling
50
60
70
80
90
100
110
Capacity ratio(%)
Condition
Indoor air flow: Super High
Pipe length:
24.6ft
Outdoor temp. (°F)
0
20
40
60
80
100
120
510152025 3035404550
Capacity ratio(%)
Condition
Indoor air flow: Super High
Pipe length:
24.6ft
Outdoor temp. (°F)
Indoor:DB 70°F
Indoor:DB 80°F
WB67 °F
WB60 °F
90 95 100 105 110 115

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Technical Information
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Rated cooling
condition(oF)
(DB/WB) Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger
Fan speed of
indoor unit
Fan speed of
outdoor unit
Compressor
frequency
(Hz)
Indoor Outdoor P (MPa) T1 (oF) T2 (oF)
80/67 95/–
MWM09Y1J
MRM09Y1J 0.8~1.1
54 to 57 106 to 109 Super High High 48
MWM12Y1J
MRM12Y1J 50 to 54 109 to 113 Super High High 77
Rated heating
condition(oF)
(DB/WB) Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger
Fan speed of
indoor unit
Fan speed of
outdoor unit
Compressor
frequency
(Hz)
Indoor Outdoor P (MPa) T1 (oF) T2 (oF)
70/60 47/43
MWM09Y1J
MRM09Y1J 37~38
98 to 100 36 to 39 Super High High 54
MWM12Y1J
MRM12Y1J 107 to 111 32 to 37 Super High High 78
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T1: Inlet and outlet pipe temperature of evaporator
T2: Inlet and outlet pipe temperature of condenser
P: Pressure at the side of big valve
Connection pipe length: 24.6ft.
Cooling:
Heating:
Indoor side noise when blowing Outdoor side noise when blowing
60 60
60 80 100
50
50
40
40
40
30
30
20
20
20
10
0
0
Indoor Fan Motor Rotating Speed
Noice/dB(A) Noice/dB(A)
low Middle High Super High
Compressor frequency/Hz
09K 12K 09K 12K
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Technical Information
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Unit: inch
5
2 3/5
21 4/7
30 1/3 8
11 1/7
3 5/7
3 2/3
Φ2 1/6 Φ2 1/6
1 5/8
MWM09Y1J MWM12Y1J
MRM09Y1J MRM12Y1J
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Unit: inch
30 10 1/8
12 3/5
11 2/3
33 2/5
21 1/4
21 1/4

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Technical Information
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Indoor unit Outdoor unit
COOLING
HEATING
4-Way valve
Discharge
Suction
Heat
exchanger
(evaporator) Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Accumlator
Compressor
Strainer StrainerCapillary
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Refrigerant pipe diameter
Liquid :1/4" Gas : 3/8"