Mitsubishi Electronics MSH-07NV, MSH-09NV, MSH-24NV MSH-12NV- E1, MSH-12NV- E2, MSH-18NV- E3

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10-2-2 Trouble criterion of main parts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MSH-07NV- E1

 

MSH-09NV- E1

 

MSH-12NV- E1

 

 

 

 

 

 

 

 

 

 

 

MSH-18NV- E1

 

MSH-24NV- E1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MSH-07NV- E2

 

MSH-09NV- E2

 

MSH-12NV- E2

 

 

 

 

 

 

 

 

 

 

 

MSH-18NV- E2

 

MSH-24NV- E2

 

MSH-18NV- E3

 

 

 

 

 

 

 

 

 

 

 

Part name

 

 

 

 

 

 

 

 

 

 

 

Check method and criterion

 

 

 

 

Room

 

 

Measure the resistance with a tester.

 

 

 

 

 

 

 

 

 

 

 

temperature

 

 

(Part temperature 10°C ~ 30°C)

 

 

 

 

 

 

 

 

 

 

 

thermistor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

 

 

 

 

 

 

Abnormal

 

 

 

 

Indoor coil

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8kΩ ~ 20kΩ

 

 

 

Opened or short-circuited

 

 

 

thermistor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance with a tester.

 

 

 

 

 

 

 

 

 

 

 

Defrost

 

 

(Part temperature –10°C ~ 40°C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

thermistor

 

 

 

 

 

 

 

 

 

 

Normal

 

 

 

 

 

 

 

Abnormal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5kΩ ~ 60kΩ

 

Opened or short-circuited

 

 

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance between the terminals with a tester.

 

 

 

 

(Coil wiring temperature –10°C ~ 40°C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Compressor

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

 

 

 

 

 

 

Abnormal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

07NV

 

 

09NV

 

12NV

 

18NV

 

24NV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C-R

3.67~4.50Ω

 

2.88~3.52Ω

1.85~2.28Ω

 

1.05~1.30Ω

0.85~1.04Ω

 

Opened or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

short-circuited

 

 

 

 

 

 

 

 

C-S

 

 

Ω

 

5.13~6.28

Ω

 

Ω

 

2.38~2.91

Ω

Ω

 

 

 

 

 

 

 

 

 

5.07~6.20

 

 

 

3.44~4.21

 

 

 

1.83~2.23

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance between the terminals with a tester.

 

 

 

 

 

 

 

 

(Coil wiring temperature10°C ~ 30°C)

 

 

 

 

 

 

 

 

 

 

 

 

 

part

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

 

 

 

 

Abnormal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor

 

 

 

 

 

 

 

 

 

 

07/09/12NV

 

 

18/24NV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHT-BLK

 

 

 

280 ~ 303Ω

 

176 ~ 192Ω

 

 

 

Opened or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK-RED

 

 

 

 

 

Ω

 

 

 

Ω

 

 

short-circuited

 

 

 

 

 

 

313 ~ 336

 

 

 

 

240 ~ 261

 

 

 

 

 

 

 

Indoor fan

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

motor

 

 

Measure the voltage Power ON.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

part

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

 

 

Abnormal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sensor

 

 

 

 

BRN-YLW

 

 

4.5 ~ 5.5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YLW-GRY

(When fan revolved one time)

 

Remain 0V or 5V

 

 

 

 

 

 

 

 

 

 

0V5V0V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Approx.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance between the terminals with a tester. (Coil wiring temperature –10°C ~ 40°C)

Outdoor fan

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

 

 

 

 

motor

 

 

 

 

 

 

 

 

 

Abnormal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

07/09NV

 

12NV

18NV

24NV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHT-BLK

192~236Ω

 

114 ~ 141Ω

102 ~ 126Ω

55.3 ~ 67.6Ω

 

 

 

 

 

BLK-RED

373~458Ω

 

118 ~ 146Ω

97.9 ~ 120Ω

 

 

Opened or

 

 

BLK-YLW

 

Ω

 

short-circuited

 

 

 

 

 

 

 

 

 

 

26.6 ~ 32.6

 

 

 

 

 

YLW-RED

 

Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

55.5 ~ 67.8

 

 

 

 

 

Measure the resistance between the terminals with a tester.

 

 

 

 

(Part temperature10°C ~ 30°C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vane motor

 

Normal

 

Abnormal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

07/09/12NV

 

282 ~ 305Ω

 

Opened or short-circuited

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18/24NV

 

358 ~ 388Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure

WHT C

 

P

AUX.

MAIN

S

R

RED

BLK

 

MAIN

AUX.

FUSE

BLK RED WHT

07NV MAIN

09NV AUX.

P

BLK REDWHT

MAIN

12NV AUX.

18NV P

BLK RED ORN WHT

24NV MAIN

AUX.1AUX.2

P

C

BLK YLW REDORN WHT

Vane motor

PNKROTOR

ORN

RED

YLW BLU

PINNER PROTECTOR

50

Image 50
Contents Contents Technical Changes Outdoor Unit Part Names and FunctionsIndoor Unit Remote Controller MSH-07NV E1 MSH-09NV E1 MSH-12NV E1 MSH-18NV E1 MSH-18NV E2MSH-24NV MSH-07NV E1 MSH-12NV E1 MSH-07NV E2 MSH-12NV E2 MSH-24NV E2MSH-09NV MSH-09NVRC4V19-AA SpecificationRH-135VGHT RH-174VGHT WHT-BLK292 BLK-RED324RH-231VHAT NH-36VMDT RC4V19-AA RA4V27-EARA6V85-AA NH-47VMDTRA4V27-EC WHT-BLK292 BLK-RED324 WHT-BLK292 BLK-RED324 AreConnected with MXZ-32NV- E1 as multi system units DB27C / WB19C Outdoor DB35C / WB24C RA4V19-AA RA4V27-EAWHT-BLK292 BLK-RED324 WHT-BLK184 BLK-RED251 Outlines and Dimensions MSH-12NV E2 MUH-12NV E1 MUH-12NV E2 MUH-18NV E1 MUH-18NV E2 MSH-24NV E1 MSH-18NV E2 MSH-24NV E2MSH-18NV E3 MUH-18NV E3MUH-24NV- E1 MUH-24NV- E2 Unit mm inchWiring Diagram MUH-07NV Models Wiring Diagram MUH-09NV Outdoor UnitModel Wiring Diagram F12 FUSE93IC141 MUH-18NV E1Dsar Surge Absorber Hybrid IC Vane MotorMSH-24NV E1 MUH-24NV E1Reversing Valve Coil Relay MSH-09NV E2 MSH-12NV E2Contactor Vane Motor FAN Motor CapacitorMUH-12NV E2 MUH-18NV E2 Model Wiring Diagram Surge Absorber TB,TB2 Terminal Block MUH-24NV E2Hybrid IC FUSE2A FAN Motor RelayIndoor Unit to Outdoor MUH-07NV E1 MUH-07NV E2 Refrigerant System DiagramMSH-07NV Indoor Unit MUH-09NV E1 MSH-09NV E2MSH-18NV E1 MSH-18NV E2 MSH-18NV E3 MUH-18NV E1 MUH-18NV E2 MUH-18NV E3MSH-24NV E1 MUH-24NV E1 MSH-24NV E2 MUH-24NV E2 Outdoor Unit Indoor UnitAdditional Refrigerant CHARGER-22 g MAX. Refrigerant Piping LengthMAX. Height Difference MSH-07NV MSH-09NV MSH-12NV 150Evacuation Proceduresair Purge When vacuumingMain Readings Guaranteed VoltageAIR Flow Indoor Unit Outdoor UnitMUH-07NV E1 E2 Outdoor LOW Pressure and Outdoor Unit CurrentCool operation MUH-18NV E1 E2 E3 MUH-09NV E1 E2MUH-12NV E1 E2 MUH-24NV E1 E2Heat operation Feel Control Microprocessor ControlIndoor Unit Display Section Fuzzy control Or less Initial room temperature Minus DRY mode 23 orMinus Heat mode Or less When the room temperature is 23C or over Cool mode of I Feel ControlDRY mode of I Feel Control When the room temperature is under 23CIndoor fan speed control Heat mode of I Feel ControlOperation time chart Example Defrostings RT12 temperatureHigh pressure protection X62 Reversing valve coil 15 sec Heat Cool OperationDRY Operation Auto Vane Operation FAN Motor ControlSleep Mode How to set the timer CancelEMERGENCY-TEST Operation Table.1 Service FunctionsMSH-07NV E1 MSH-18NV E2 MSH-09NV E1 MSH-12NV E1 MSH-18NV E1 No unit Cut J2 2The reset button can be located on the front sideNo unit Cut J1 No unit Cut both J1 and J2Operation MSH-07NV E2 MSH-12NV E2 MSH-18NV E3 MSH-09NV E2 MSH-24NV E2MSH-07/09/12 MSH-18/24 Troubleshooting Instruction of troubleshooting Operation IndicatorPage MSH-18NV- E3 MSH-12NV- E1MSH-12NV- E2 Trouble criterion of main partsCheck of indoor fan motor Inodoor fan does not operateCheck of indoor electronic control P.C. board MSH-07NV MSH-09NV MSH-12NV MSH-24NV Test Point Diagram and Voltage MSH-18NV E1 Indoor electric control P.C.boardMUH-18NV E1 Outdoor deicer P.C. board Deicer P.C. BoardPower supply input MSH-24NV E1 MSH-18NV E2 MSH-24NV E2 MSH-18NV E3 MUH-07NV E1 MUH-09NV E1 MUH-24NV E1 MUH-07NV MUH-12NV MUH-18NVMSH-07NV E1 MSH-07NV E2 Disassembly InstructionsOperating Procedure Photos MSH-09NV E1 MSH-09NV E2 MSH-12NV E1 MSH-12NV E2Removing the vane motor Photo Operating ProcedureRemoving the electrical box Photo Removing the line flow fan and the indoor fan motor PhotoRemoving the electronic control P.C. board Photo MSH-18NV E1 MSH-18NV E3MSH-24NV MSH-18NV Remove the front panel. Refer toRemoving the indoor fan motor and the line flow fan Removing the cabinet Photo MUH-07NV E1 MUH-09NVMUH-07NV MUH-09NV Remove the deicer P.C. boardRemoving the outdoor fan motor Removing the compressor PhotoRemoving the deicer P.C. board Photo MUH-12NV E1 MUH-18NV MUH-18NV E3MUH-12NV MUH-18NV Removing the outdoor fan motor Photo Remove the cabinet. Refer toRemoving the fan motor Photo Outdoor Unit Operating Procedure PhotosRemoving the electrical parts Removing the heat exchanger and the compressor Parts List Indoor Unit Heat EXCHANGER1Indoor Unit Electrical Parts TOP Panel Service PanelCabinet FAN GuardPropeller FAN MUH-09NV E1 MUH-07NV E2 MUH-09NV E2MUH-07/09NV- E1 Deicer P.C. BoardOutdoor Unit Structural Parts MUH-12NV E1 MUH-12NV E2 Indoor Unit Heat Exchanger Parts Indoor Unit Structural Parts MSH-18NV E1 WH MSH-24NV E1 WHMSH-18NV E2 WH MSH-24NV E2 WH MSH-18NV E3 WH 1714 Outdoor Unit Structural Parts MUH-18NV E1 MUH-18NV E2 147Outdoor Unit Structural PARTS17 Remote Controller Holder Accessory and Remote Controller PartsRemote Controller Outdoor Unit Structural PartsRefrigerant Pipes AIR Cleaning FilterOptional Parts Deodorizing Filter

MSH-07NV, MSH-09NV, MSH-24NV, MSH-12NV, MSH-18NV specifications

Mitsubishi Electronics has long been recognized for its innovative heating and cooling solutions, particularly in the HVAC industry. Among its notable offerings are the MSH-18NV, MSH-12NV, MSH-24NV, MSH-09NV, and MSH-07NV models, which showcase advanced features and technologies to enhance indoor climate comfort.

One of the standout characteristics of these models is their energy efficiency. Each unit is equipped with an inverter technology that optimizes power consumption by adjusting the compressor's speed according to the cooling or heating requirement. This not only leads to considerable energy savings but also reduces operational costs for users. The units have received high seasonal energy efficiency ratings, making them an environmentally friendly choice.

The MSH series incorporates advanced filtration systems designed to improve indoor air quality. These systems capture dust, pollen, and other allergens, ensuring that the air circulated in residential or commercial spaces remains clean and healthy. Some models feature a dual-layer filter that further enhances dust and odor removal, providing a more comfortable environment for occupants.

In terms of design, the MSH series is sleek and modern, allowing seamless integration into various interiors. The compact size of these units means they can fit into tighter spaces without compromising performance or aesthetics. Moreover, the whisper-quiet operation is another appealing feature, as it ensures minimal noise disruption during cooling or heating periods.

The control mechanisms of the MSH models are user-friendly and versatile. They come equipped with an intuitive remote control, allowing users to easily adjust temperature settings and modes from across the room. Additionally, some models offer smart connectivity features, enabling integration with smart home systems for added convenience and control via mobile devices.

Durability is another key aspect of Mitsubishi's MSH series. They are constructed with high-quality materials designed to withstand various environmental conditions, ensuring longevity and reliable performance. The outdoor units are particularly resilient, featuring weather-resistant components that allow them to operate effectively even in extreme temperatures.

In conclusion, Mitsubishi Electronics' MSH-18NV, MSH-12NV, MSH-24NV, MSH-09NV, and MSH-07NV models represent a blend of energy efficiency, advanced air filtration, user-friendly controls, and durable construction. These units reflect Mitsubishi's commitment to providing high-quality heating and cooling solutions that cater to a wide range of residential and commercial needs while ensuring comfort and convenience for users.