Mitsubishi Electric Mr. Slim MSH09NW Service Manual
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Mitsubishi Electric Mr. Slim MSH09NW Service Manual

Wireless type
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL

Wireless type
Models
MSH09NW
MSH12NN
MSH15NN
MSH17NN
MSH12NN
MSH15NN
MSH17NN
MUH12NN
MUH15NN
· MUH09NW
(WH)
· MUH12NN
(WH)
· MUH15NN
(WH)
· MUH17NN
(WH)
CONTENTS
1. FEATURES ·························································3
2. TECHNICAL CHANGE·······································4
3. PART NAMES AND FUNCTIONS······················4
4. SPECIFICATIONS ··············································6
5. DATA·································································10
6. OUTLINES AND DIMENSIONS ·······················23
7. WIRING DIAGRAM ··········································26
8. REFRIGERANT SYSTEM DIAGRAM ··············28
Remote
controller
9. MICROPROCESSOR CONTROL ····················30
10. SERVICE FUNCTIONS·····································41
11. TROUBLESHOOTING ······································43
12. DISASSEMBLY INSTRUCTIONS·····················55
13. PARTS LIST······················································65
14. OPTIONAL PARTS···········································74
The Slim Line.
From Mitsubishi Electric.
R
No. OB198

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Summary of Contents for Mitsubishi Electric Mr. Slim MSH09NW

  • Page 1: Service Manual

    7. WIRING DIAGRAM ··········································26 MSH17NN 8. REFRIGERANT SYSTEM DIAGRAM ··············28 Remote INDOOR UNIT controller 9. MICROPROCESSOR CONTROL ····················30 10. SERVICE FUNCTIONS·····································41 11. TROUBLESHOOTING ······································43 12. DISASSEMBLY INSTRUCTIONS·····················55 13. PARTS LIST······················································65 14. OPTIONAL PARTS···········································74 The Slim Line. From Mitsubishi Electric. MUH12NN MUH15NN OUTDOOR UNIT...
  • Page 3 It has a liquid crystal display which indicates such infomation as mode, fan speed and temperature selected as well as the programmed ON/OFF time. It is also equipped with “I Feel Control”, a unique Mitsubishi Electric feature that allows the user to adjust the temperature to exactly the level he or she wants simply by tapping the button that describes present conditions : “Too Cool”...

  • Page 4: Technical Changes

    (Capillary tube, refrigerant and pipe had changed.) 3. Remote controller has changed. (The timer function was changed to the clock timer function.) 4. The swing mode was addedd to indoor auto vane. MSH17NN 1. New Model PART NAMES AND FUNCTIONS MSH09NW, MSH12NN, MSH15NN, MSH17NN REMOTE CONTROLLER...
  • Page 5 INDOOR UNIT MSH09NW MSH12NN MSH15NN MSH17NN (When the front panel is opened) MSH09NW MSH09NW MSH12NN, MSH15NN,MSH17NN MSH12NN, MSH15NN,MSH17NN OUTDOOR UNIT MUH12NN MUH17NN MUH09NW MUH15NN...

  • Page 6: Specifications

    SPECIFICATIONS ITEM MODELS MSH09NW Btu/h 8,800 Cooling Capacity Btu/h 10,500 Heating 47 Btu/h 5,300 Heating 17 Cooling Power Heating 47 consumption Heating 17 [SEER] 9.9 [10.0] HSPF [17˚] INDOOR UNIT MODEL MSH09NW White External finish Power supply V, phase, Hz 115, 1, 60 Max.
  • Page 7 ITEM MODELS MSH12NN MSH15NN Btu/h 12,600/12,900 14,300/14,600 Cooling Capacity Btu/h 13,000/13,500 14,500/14,800 Heating 47 Btu/h 6,800/7,000 8,700/8,900 Heating 17 1,280/1,310 1,350/1,380 Cooling Power 1,180/1,250 1,250/1,300 Heating 47 consumption 1,110/1,140 1,210/1,240 Heating 17 [SEER] 9.8/9.8[10.2/10.2] 10.6/10.6 [10.7/10.7] HSPF [17˚] 6.8/6.8 3.2/3.2 3.4/3.3 INDOOR UNIT MODEL MSH12NN...
  • Page 8 ITEM MODELS MSH17NN Btu/h 16,000/16,200 Cooling Capacity Btu/h 16,800/17,200 Heating 47 Btu/h 10,100/10,300 Heating 17 1,560/1,580 Cooling Power 1,500/1,570 Heating 47 consumption 1,410/1,510 Heating 17 [SEER] 10.3/10.3 (10.4/10.4) 6.8/6.8 HSPF [17˚] 3.3/3.2 INDOOR UNIT MODEL MSH17NN External finish White Power supply V, phase, Hz 115, 1, 60 Max.
  • Page 9 MAX. REFRIGERANT PIPING LENGTH Additional piping Piping size O.D. : in. Length of connecting pipe : in. Model Max. length : ft Liquid Indoor unit Outdoor unit [ 3/8 MSH09NW [ 1/4 16-15/16 MSH12NN [ 5/8 MSH15NN MSH17NN MAX. HEIGHT DIFFERENCE...

  • Page 10: Performance Data

    DATA MSH09NW, MSH12NN, MSH15NN, MSH17NN 1. PERFORMANCE DATA 1) COOLING CAPACITY Outdoor intake air DB temperature ( ˚F ) Indoor air Models ( ˚F ) 10.8 0.79 10.1 0.87 0.94 0.98 1.02 MSH09NW 10.2 0.75 0.82 0.89 0.94 0.99 0.71 0.79...
  • Page 11 2. PERFORMANCE CURVE NOTE : A point on the curve shows the reference point. MSH09NW MUH09NW Cooling capacity SHF at rating condition = 0.7 = 279CFM Airflow Bypass Factor = 0.23 Outdoor intake air DB temperature (¡F) Heating capacity = 328CFM Airflow Outdoor intake air WB temperature (¡F)
  • Page 12 NOTE : A point on the curve shows the reference point. MSH12NN MUH12NN Cooling capacity SHF at rating condition = 0.71 = 388CFM Airflow Bypass Factor = 0.15 Outdoor intake air DB temperature (¡F) Heating capacity = 452CFM Airflow Outdoor intake air WB temperature (¡F)
  • Page 13 NOTE : A point on the curve shows the reference point. MSH15NN MUH15NN Cooling capacity SHF at rating condition = 0.65 = 367CFM Airflow Bypass Factor = 0.22 Outdoor intake air DB temperature (¡F) Heating capacity = 452CFM Airflow Outdoor intake air WB temperature (¡F)
  • Page 14 NOTE : A point on the curve shows the reference point. MSH17NN MUH17NN Cooling capacity SHF at rating condition = 0.64 Airflow = 413CFM Bypass Factor = 0.24 Outdoor intake air DB temperature (¡F) Heating capacity = 491CFM Airflow Outdoor intake air WB temperature (¡F)
  • Page 15 3. Condensing presure Data is bassed on the condition of indoor humidity 50%. MSH09NW(Cooling) Air flow should be set at Hi. A point on the curve shows the reference point. (Psi.G) 86 F (psi.G) 86 F 68 70 104 F...
  • Page 16 MSH12NN(Cooling) Data is bassed on the condition of indoor humidity 50%. Air flow should be set at Hi. A point on the curve shows the reference point. (Psi.G) 86 F (psi.G) 86 F 68 70 104( F) 68 70 104( F) Outdoor ambient temperature Outdoor ambient temperature MSH12NN(Heating)
  • Page 17 MSH15NN(Cooling) Data is bassed on the condition of indoor humidity 50%. Air flow should be set at Hi. A point on the curve shows the reference point. (Psi.G) 86 F (psi.G) 86 F 68 70 104( F) 68 70 104( F) Outdoor ambient temperature Outdoor ambient temperature MSH15NN(Heating)
  • Page 18 MSH17NN(Cooling) Data is bassed on the condition of indoor humidity 50%. Air flow should be set at Hi. A point on the curve shows the reference point. (Psi.G) 86 F (psi.G) 86 F 68 70 104( F) 68 70 104( F) Outdoor ambient temperature Outdoor ambient temperature MSH17NN(Heating)

  • Page 19: Power Supply

    POWER SUPPLY MSH09NW Control voltage 115V 60Hz, 1[ INDOOR UNIT MSH09NW / MUH09NW Power supply voltage to serial signal circuit is 12V DC. Between 1 1 and 3 3 on in-out terminal block will SIGNAL WIRE be 12V DC peak voltage.
  • Page 20 Model MSH12NN MSH15NN Item Unit Cooling Heating Cooling Heating Capacity Btu / h 12,600/12,900 13,000/13,500 14,300/14,600 14,500/14,800 Total — 0.71 – 0.65 – Input 1.28/1.31 1.18/1.25 1.35/1.38 1.25/1.30 Indoor unit MSH12NN MSH15NN Power supply (V, phase, Hz) 115, 1, 60 115, 1, 60 Input 0.047...
  • Page 21 Model MSH17NN Item Unit Cooling Heating Capacity Btu / h 16,000/16,200 16,800/17,200 Total 0.64 — – Input 1.56/1.58 1.50/1.57 Indoor unit MSH17NN Power supply (V, phase, Hz) 115,1,60 Input 0.054 Fan current 0.47 Aux. heater current – Electrical circuit Outdoor unit MUH17NN Power supply (V, phase, Hz) 208/230, 1, 60...
  • Page 22 5. OPERATING RANGE (1) POWER SUPPLY Models Rating Guaranteed Voltage MSH09NW MSH12NN Indoor unit MSH15NN 115V 60Hz 1[ Min. 103V — Max. 127V MSH17NN MUH09NW MUH12NN Outdoor unit MUH15NN 208/230V 60Hz 1[ Min. 198V — Max. 253V MUH17NN (2) OPERATION...

  • Page 23: Outlines And Dimensions

    OUTLINES AND DIMENSIONS MSH09NW Unit: inch 8-7/8 8-7/8 3-5/16 5-1/4 INDOOR UNIT 30-13/16 3-11/16 12-11/16 3-5/16 12-3/8 2-9/16 7-3/16 3/16 32-1/16 1/4-19-11/16 3/8-16-15/16 1-3/8 O.D. 3/4 I.D 2-3/8 24-5/8 5-1/8 2-13/16 1-1/8 3-9/16 11/16 2-3/16 MUH09NW OUTDOOR UNIT 4-3/8 13/16...

  • Page 24: Outdoor Unit

    MSH12NN, MSH15NN, MSH17NN Unit: inch INDOOR UNIT 7/16 13/16 5-15/16 8-9/16 25-1/2 17-11/16 17-11/16 installation plate 13-7/8 17-1/4 7-1/2 3/16 2-15/16 39-15/16 5/16-19-11/16 1/2-16-15/16 1-15/16 O.D. 1-1/8 O.D. 7-1/2 1-15/16 30-1/2 11/16 2-3/16 1-1/8 MUH12NN, MUH15NN OUTDOOR UNIT 13/16 13-12/16 1-15/16 1-3/16 7-3/16...
  • Page 25 MUH17NN Unit: mm OUTDOOR UNIT 2-1/16 1-3/4 max. 3-1/8 11/16 33-9/16 21-3/4 14-1/4 13-7/8 11/16 9/16 1-3/4 13-7/4 1-9/161-1/16 1-5/8 15-7/8 20-5/18 7-1/18 17-3/18 5-7/16...

  • Page 26: Wiring Diagram

    WIRING DIAGRAM MSH09NW MODEL WIRING DIAGRAM INDOOR UNIT SR11 TO OUTDOOR RT12 UNIT CN201 CONNECTING HIC1 RT11 WIRES DC12V POWER NR11 SUPPLY 115V TRANS TAB12 1 phase 60Hz LD101 CN211 ELECTRONIC CONTROL P.C BOARD GROUND RECEIVER P.C.BOARD AUTO RESTART REMOTE...
  • Page 27 MSH12NN, MSH15NN, MSH17NN MODEL WIRING DIAGRAM INDOOR UNIT TO OUTDOOR CN201 RT12 UNIT CONNECTING HIC1 RT11 WIRES DC12V LDCOM POWER LDC11 SUPPLY LDC12 115V TAB12 LDFH 1 phase SR144 TRANS 60Hz LDFL SR142 LDFM SR143 LDFVL SR141 ELECTRONIC CONTROL P.C BOARD GRN/YLW GRN/YLW GROUND...

  • Page 28: Indoor Unit

    REFRIGERNT SYSTEM DIAGRAM Unit:inch MUH09NW MSH09NW OUTDOOR UNIT INDOOR UNIT Stop valve Muffler Refrigerant pipe [3/8 (with service (Option) port) Strainer Reversing (with heat insulator) valve Indoor coil Service thermistor Indoor Outdoor Service port RT12 heat heat port Flared connection...
  • Page 29 Unit:inch MSH17NN MUH17NN INDOOR UNIT OUTDOOR UNIT Refrigerant pipe [5/8 (Option) Reversing (with heat insulator) Strainer Strainer valve Indoor coil Muffler Ball valve thermistor Indoor Service Outdoor RT12 heat port Flared connection Service heat exchanger Distributor port exchanger Fusible plug Defrost thermisor (RT61)

  • Page 30: Microprocessor Control

    MICROPROCESSOR CONTROL MSH09NW, MSH12NN Wireless remote controller MSH15NN, MSH17NN Once the controls are set, the same operation mode can be repeated by simply turning the OPERATE/STOP button ON. Indoor unit receives the signal with a beep tone. When the system turned off, 3-minute time delay will operate to protect system from overload and compressor will not restart for 3 minutes.
  • Page 31 (4) The initial set temperature is decided by the initial room temperature. Model Initial room temperature Initial set temperature 75˚F 79˚F or more COOL mode of Initial room temperature “I FEEL CONTROL” 79˚F or less minus 4˚F DRY mode of Initial room temperature 73˚F to 77˚F “I FEEL CONTROL”...
  • Page 32 — COOL mode of “I FEEL CONTROL” — Compressor and outdoor fan motor Run continuously in cooling mode Indoor fan motor NOTE : Coil frost prevention during COOL mode of “I FEEL CONTROL” There are two types of controls in coil frost prevention. Temperature control <MSH09>...
  • Page 33 Operation time chart Example 1st ON Thermostat Indoor fan Outdoor fan compressor 1 min. 3 min. 8 min. 4 min. NOTE Coil frost prevention during DRY mode of “I FEEL CONTROL” The operation is as same as that of coil frost prevention during COOL mode of “I FEEL CONTROL”. However the indoor fan speed becomes the set speed or Lo.
  • Page 34 2. High pressure protection During heating operation, the outdoor fan motor is controlled by the indoor coil thermistor RT12 temperature for excess rise protection of compressor discharge pressure. Outdoor fan OFF : 126˚F (MSH09), 122˚F (MSH12/15/17) Outdoor fan ON : 118.4˚F (MSH09), 115˚F (MSH12/15/17) High pressure protection time chart Indoor coil temperrature thermistor RT12...
  • Page 35 (3) Defrost time chart Defrost thermistor 38˚F or more RT61 27˚F or less Outdoor 52C relay(Compressor) 15 sec. 30 sec. (Solenoid coil) 30 sec. 15 sec. SR61 Outdoor fan Defrost counter Max 10 min. Indoor fan Horizontal Indoor vane set position NOTE When the indoor coil thermistor reads above 64˚F, indoor fan operates at VLo for 30 seconds.
  • Page 36 4. Reversing valve control Heating · · · · · ON Cooling · · · · · OFF Dry · · · · · · · · OFF NOTE: The Reversing valve reverses for 5 seconds right before start-up of the compressor. (HEAT) (COOL / DRY) 5 sec.
  • Page 37 9-5. FAN MOTOR CONTROL (MSH09 only) (1) Rotational frequency feedback control The indoor fan motor is equipped with a rotational frequency sensor, and outputs signal to the microprocessor to feedback the rotational frequency. Comparing the current rotational frequency with the target rotational frequency (Hi,Me,Lo) the microprocessor controls SR11 and adjusts fan motor electric current to make the current rotational frequency close to the target rotational frequency.
  • Page 38 (3) Positioning The vane is once pressed to the vane stopper below to confirm the standard position and then set to the desired angle. The positioning is decided as follows. (a) When the OPERATE/STOP button is pressed. (POWER ON/OFF) (b) When the vane control change AUTO to MANUAL. (c) When the SWING is finished.
  • Page 39 9-7. TIMER OPERATION 1. How to set the timer. (1) Press OPERATE/STOP button to start the air conditioner. (2) Check that the current time is set correctly. NOTE : Timer operation will not work without setting the current time. Initially “AM0:00” blinks at the current time display of TIMER MONITOR so set the current time, correctly with CLOCK SET button.
  • Page 40 In the test run or emergency operation, the horizontal vane operates in AUTO mode a the set temperature of 75˚F. Defrosting of outdoor heat exchanger works in EMERGENCY HEAT MODE. NOTE : Do not press the EMERGENCY OPERATION switch during normal operation. MSH09NW Press once <Cool>...

  • Page 41: Service Functions

    SERVICE FUNCTIONS MSH09NW, MSH12NN, MSH15NN, MSH17NN 1. COMPULSORY DEFROSTING MODE FOR SERVICE By short circuit of the connector JP607 and R853 on the outdoor deicer P.C. board, defrosting mode can be accomplished regardless of the defrost interval restriction. See Page 53.
  • Page 42 5. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION A maximum of 4 indoor units with wireless remote controllers can be used in a room. In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be modified according to the indoor unit number.

  • Page 43: Troubleshooting

    TROUBLESHOOTING MSH09NW, MSH12NN, MSH15NN, MSH17NN 11-1 Cautions on troubleshooting 11-1-1 Before troubleshooting, check the followings: 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for mis-wiring. 11-1-2 Take care the followings during servicing. 1) Be sure to unplug the power cord before removing the front panel, the cabinet, the top panel, and the P.C. boards.
  • Page 44 Test receiver P.C. ate even in Refer to “Check of Run opera- Test Run board” on MSH09NW only indoor electric control tion. page 48. operation. 3-time flash P.C. board” on page 49. 2.5-second OFF 1-time flash Refer to Check room “Check of...
  • Page 45 Room open circuit every 2 seconds tempera- during operation. ture ther- 2.5-second OFF mistor MSH09NW only Disconnect connector CN211 and then Indoor fan check connector CN121 to make 3-time flash repeats 12 sec- sure rotational frequency feedback signal...
  • Page 46 MSH09NW, MSH12NN, MSH15NN, MSH17NN 11-2-2 Trouble criterion of main parts Part name Check method and criterion Figure Room Measure the resistance with a tester. temperature (Part temperature 50°F ~ 86°F) thermistor Normal Abnormal Indoor coil Opened or short-circuited 8kΩ ~ 20kΩ...

  • Page 47: Check Of Indoor Fan Motor

    Check of indoor fan motor Inodoor fan does not operate. Turn OFF power supply. Check connector (Fan motor) visually. Are lead wires connected? Is soldered point normal? Reconnect the lead wires. Resolder it. Disconnect lead wires from connector (Fan motor) on indoor electronic control P.C. board. Measure resistance between lead wires No.1 and No.3 and then No.2 and No.3 (09NW).
  • Page 48 Re-install the unit away from lights. inverter or rapid-start type within Attach a filter on receiving part. the range of 3.28ft? MSH12/15/17NN MSH09NW The connector connecting Connect properly. Receiver P.C. board and Micom P.C. board is properly fixed. Replace Receiver P.C. board.

  • Page 49: Check Of Indoor Electronic Control P.c. Board

    Check of indoor electronic control P.C. board The unit doesn’t operate with the remote controller. Replace the fuse. Also, the OPERATION INDICATOR Trouble of indoor electronic con- lamp doesn’t light up by pressing the trol P.C. board. EMERGENCY OPERATION switch. Is fuse(F11)blown? 1.Pull out power supply Is ther resistance?
  • Page 50 Turn on power supply. (indoor/outdoor units) Rectify voltage. When 230V is available for Power voltage of terminal blocks of MSH09NW outdoor unit,replace indoor/outdoor units is normal. the outdoor P.C. board. Turn on Emergency operation switch. Check if connecting or con- Normal operation starts 3 minutes after tacting part has no problem.
  • Page 51 TEST POINT DIAGRAM AND VOLTAGE MSH09NW Indoor electronic control P.C. board CN201 No.1 Power supply input AC115V CN201 No.1 Varistor(NR11) Fuse AC250V 3.0A Room temperature thermistor (RT11) Indoor coil thermistor (RT12) Timer short mode point Room temperature thermistor (RT11) Indoor coil thermistor (RT12)
  • Page 52 TEST POINT DIAGRAM AND VOLTAGE MSH12NN, MSH15NN, MSH17NN Indoor electronic control P.C. board Fan motor power supply VLo Me Lo 8 7 5 6 4 Varistor(NR11) Fuse AC250V 3.0A CN201 Power supply input AC115V JP17 DC12V JP16 JP11 DC5V JP24 Time short mode point Indoor coil thermistor (RT12) CN112...
  • Page 53 MUH09NW MUH12NN MUH15NN MUH17NN 32 50 86 104 ˚F R601 DC5~10V Defrost INPUT Outdoor fan motor Solenoid coil thermistor(RT61) AC115V(MUH09) AC115V(MUH09) AC115V(MUH09) AC208/230V(MUH12/15/17) AC208/230V(MUH12/15/17) AC208/230V(MUH12/15/17) DEICER P.C. BOARD Fuse 2A/250V Defrost interval time short pin DC5V Defrost termination DC12V temperature change. DC12V Jumper wire JPC and JPE.
  • Page 54 RELAY OPERATION MSH09NW MSH12NN MSH15NN MSH17NN MODE 52C CONTACTOR THERMOSTAT INDOOR FAN RELAY COOL & COOL mode AUTO or set speed of I FEEL CONTROL OFF for 2 min.after AUTO or set system DRY & Repeats 8 min. ON/3min. OFF DRY mode operation or 2 min.

  • Page 55: Disassembly Instructions

    Be sure to pull the wire by pushing the locking lever (projected part) of the terminal with a finger. Slide the sleeve. Pull the wire while pushing the locking lever. 12-1 MSH09NW INDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the front panel (1) Remove the screws caps of the front panel.
  • Page 56 OPERATING PROCEDURE PHOTOS 3. Removing the electrical box (1) Remove the front panel. (Refer to 1) (2) Remove the electrical cover. (3) Remove the electronic control P.C. board and the display P.C. board.(Refer to 2) (4) Remove the ground wire of the indoor heat exchanger. (5) Unhook the catches (both upper and lower), remove the electrical box.
  • Page 57 12-2 MSH12NN , MSH15NN, MSH17NN INDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the front panel Photo 1 (1) Remove the screws caps of the front panel. Remove the screws. Front panel (2) Pull the panel down to your side slightly and unhook the catches at the top.
  • Page 58 OPERATING PROCEDURE PHOTOS 3. Removing the indoor fan motor and the line flow fan Photo 3 (1) Remove the front panel.(Refer to 1) Heat exchanger (2) Remove the electrical cover. (3) Disconnect the connector of the indoor coil thermistor. Catch (4) Disconnect the motor connector (CN211 and CN121) and the vane motor connector (CN151) on the electronic con Heat exchanger...
  • Page 59 12-3 MUH09NW OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the cabinet Photo 1 (1) Remove screws securing the top panel. (2) Remove the screw securing the service panel. (3) Remove screws securing the cabinet. (4) Remove the service panel,and remove the screw from the insides.
  • Page 60 OPERATING PROCEDURE PHOTOS 3. Removing the compressor Photo 4 (1) Remove the lead clamps. (2) Remove the screws securing the relay panel. (3) Remove the screw securing the service port. Terminal cover Discharge pipe (4) Remove the terminal cover. (5) Pull out the lead from the compressor terminal. (6) Remove the overcurrent relay.
  • Page 61 12-4 MUH12NN , MUH15NN OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the cabinet Photo 1 (1) Remove the screws of the cabinet. (2) Hold the bottom of the cabinet on the both side to remove the cabinet. Screws Service panel Photo 2 Screw Screws...
  • Page 62 OPERATING PROCEDURE PHOTOS 3. Removing the outdoor fan motor Photo 4 Connector Clamp (1) Remove the cabinet. (Refer to 1) (2) Disconnect the connector and remove the clamp of fan motor lead wire. (3) Remove the propeller fan nut and remove the propeller fan. (4) Remove screws securing the fan motor.
  • Page 63 12-5 MUH17NN OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the cabinet and electrical parts Photo 1 (1) Remove the top panel (3 screws in front, 2 screws in rear) Screws Top panel (2) Remove the cover panel (1 screw). The panel is anchored by clicks to the side panel. Remove by pulling towards you.
  • Page 64 OPERATING PROCEDURE PHOTOS 3. Removing the heat exchanger and compressor Photo 4 (1) Remove the rear panel (2 screws in front, 1 screw on the Screws side, 3 screws in the rear). Remove the valve bed, and open the rear panel to the rear to remove. NOTE : All panels are clasped, and must be removed by shifting up and down.

  • Page 65: Parts List

    PARTS LIST INDOOR UNIT STRUCTURAL PARTS MSH09NW (WH) Optional parts (See page 74.) Symbol Q'ty/unit in Wiring Part No. Remarks Part Name MSH09NW Diagram (WH) E02 289 000 FRONT PANEL(WH) GRILL(WH) E02 151 010 E02 164 100 AIR FILTER 1PC/SET...
  • Page 66 INDOOR UNIT ELECTRICAL PARTS MSH09NW(WH) Part number that are circled is not shown in the illustration. Symbol Q'ty/unit in Wiring Part No. Remarks Part Name MSH09NW Diagram (WH) E02 199 520 NOZZLE(WH) FAN GUARD VANE(WH) E02 166 040 E02 141 702...
  • Page 67 OUTDOOR UNIT STRUCTURAL PARTS MUH09NW Part number that are circled is not shown in the illustration. Symbol Q'ty/unit in Wiring Part No. Part Name Remarks MUH09NW Diagram E02 096 232 CABINET TOP PANEL E02 085 297 E02 199 521 FAN GUARD SERVICE PANEL E02 085 245 E02 289 630...
  • Page 68 OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS MUH09NW Part number that are circled is not shown in the illustration. Symbol Q'ty/unit Part No. in Wiring Part Name Remarks MUH09NW Diagram PROPELLER FAN E02 085 501 OUTDOOR FAN MOTOR E02 289 301 COMPRESSOR CAPACITOR 70+/220VAC E02 289 353...
  • Page 69 INDOOR UNIT STRUCTURAL PARTS MSH12NN (WH) MSH15NN (WH) MSH17NN (WH) Optional parts (See page 74.) Part number that are circled is not shown in the illustration. Symbol Q'ty/unit in Wiring Part No. Part Name Remarks MSH17NN MSH12NN MSH15NN (WH) (WH) (WH) Diagram FRONT PANEL(WH)
  • Page 70 INDOOR UNIT ELECTRICAL PARTS MSH12NN (WH) MSH15NN (WH) MSH17NN (WH) Part number that are circled is not shown in the illustration. Symbol Q'ty/unit in Wiring Part No. Part Name Remarks MSH12NN MSH17NN MSH15NN Diagram (WH) (WH) (WH) E02 138 520 NOZZLE(WH) FAN GUARD E02 143 040...
  • Page 71 OUTDOOR UNIT STRUCTURAL PARTS MUH12NN MUH15NN Part number that are circled is not shown in the illustration. Symbol Q'ty/unit in Wiring Part No. Part Name Remarks MUH12NN MUH15NN Diagram E02 141 232 CABINET E02 141 521 GRILLE E02 270 245 SERVICE PANEL E02 139 630 OUTDOOR HEAT EXCHANGER...
  • Page 72 OUTDOOR UNIT STRUCTURAL PARTS MUH17NN...
  • Page 73 DEICER P.C. BOARD E02 172 490 SOLENOID COIL 21S4 E02 282 961 REVERSING VALVE E02 282 340 COMPRESSOR CONTACTOR ACCESSORY AND REMOTE CONTROLLER PARTS MSH09NW (WH) MSH12NN (WH) MSH15NN (WH) MSH17NN (WH) Symbol Q'ty/unit in Wiring Part No. Part Name...

  • Page 74: Optional Parts

    Pipe length charge Model Cross-section A-Gas(in.) B-Liquid(in.) Insulation(in.) R-22(Oz) MAC - 440PI 10ft MAC - 441PI 16ft C 13/16 MSH09NW MAC - 442PI 23ft D1-1/16 MAC - 443PI 33ft MAC - 670PI 10ft MSH12NN MAC - 671PI 16ft C 1-7/32...
  • Page 76 C C Copyright 1997 MITSUBISHI ELECTRIC ENGINIEERING CO.,LTD New publication, effective Jul. 1997 Issued in Jul. 1997. No.OB198 5042 Specifications subject to change without notice.
  • Page 77 3400 Lawrenceville Suwanee Road Suwanee, Georgia 30024 ● Toll Free: 800-433-4822 Toll Free Fax: 800-889-9904 ● www.mrslim.com Specifications are subject to change without notice.

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