Mitsubishi Electronics PMFY-P06NBMU-E1, PMFY-P08NBMU-E1, PMFY-P12NBMU-E1 Trouble Shooting

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9

TROUBLE SHOOTING

9-1. HOW TO CHECK THE PARTS

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E PMFY-P06NBMU-E1PMFY-P08NBMU-E1PMFY-P12NBMU-E1PMFY-P15NBMU-E1

Parts name

 

 

 

 

 

 

Check points

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermistor (TH21)

 

Disconnect the connector then measure the resistance with a tester.

 

<Room temperature

 

(At the ambient temperature 50°F~86°F)

 

 

 

 

 

detection>

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermistor (TH22)

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

Abnormal

 

Refer to the next page for the details.

<Liquid pipe temperature

 

 

 

 

 

 

 

 

 

 

 

 

4.3k"~9.6k"

 

Open or short

 

detection>

 

 

 

 

 

 

 

 

 

Thermistor (TH23)

 

 

 

 

 

 

 

 

 

 

 

 

<Gas pipe temperature

 

 

 

 

 

 

 

 

 

 

 

 

detection>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vane motor (MV)

 

Measure the resistance between the terminals with a tester.

 

Yellow 2

 

 

 

(At the ambient temperature 68°F~86°F)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MV

 

Connector

 

Normal

 

 

Abnormal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Red 4

 

 

Brown — Yellow

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Brown — Red

 

 

 

 

 

 

 

 

 

Brown5

 

 

 

 

380" i7%

 

 

Open or short

 

 

 

1

3

 

Brown — Orange

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Green Orange

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Brown — Green

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Linear expansion

 

Disconnect the connector then measure the resistance with a tester.

 

valve (LEV)

Blue

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

 

Abnormal

 

M

 

Brown

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

Refer to the next

 

White-Red

Yellow-Brown

Orange-Red

Blue-Brown

Open or short

 

 

 

 

2 Yellow

 

 

 

 

 

 

 

 

 

page for the details.

 

 

 

 

 

150k" i10%

 

 

 

 

 

 

 

 

 

 

 

1 5 3

 

 

 

 

 

 

 

 

 

 

 

Orange

 

 

 

 

 

 

 

 

 

 

 

 

 

Red

 

 

 

 

 

 

 

 

 

 

 

 

 

White

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drain pump (DP)

 

Measure the resistance between the terminals with a tester.

 

 

 

 

 

(At the ambient temperature 68°F)

 

 

 

 

 

 

Blue

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

Normal

 

Abnormal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

400"~480"

 

Open or short

 

 

 

 

 

 

Blue

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drain sensor (DS)

 

Measure the resistance after 3 minutes have passed since the power supply was turned off.

 

 

 

 

(At the ambient temperature 32°F~140°F

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

Abnormal

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refer to the next page for the details.

 

 

 

0.6k"~6.0k"

 

Open or short

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

Image 20
Contents Contents Revised EDITION-BFeatures Technical ChangesReturns air from room Part Names and FunctionsRemove dust and pollutants from return air Display Section ˚F˚CSpecification SpecificationsElectrical Parts Specifications WNote Refer to Wiring Diagram for the supplied voltageOperation in conjunction with duct fan Booster fan How to read curvesAIR Capacity Taken from Outside Noise Criterion Curves PMFY-P06NBMU-E PMFY-P15NBMU-EPMFY-P08NBMU-E PMFY-P12NBMU-EInstallation space required around Right sideIndoor TopWiring Diagram PMFY-P06NBMU-E PMFY-P08NBMU-EE1PMFY-P15NBMU-E1 PMFY-P06NBMU-E1PMFY-P08NBMU-E1Pmfy Refrigerant System Diagram Unitin.mmHow to operate Microprocessor ControlIndoor Unit Control 8-1. Cool Operation Pressed once. Cooling 67 to 87FBasic control system Control modes Drain pump VaneDrain sensor function Desired temperature DRY OperationPressed once. Dry 67 to 87F Drain pump Same control as Cool operation VaneOn the vanes downward blow setting FAN OperationDisplay in Heat operation Defrost Heat OperationPressed once. Heating 63 to 83F From the preceding When Unit is Stopped Auto Operation Automatic COOL/HEAT Change Over OperationTrouble Shooting Linear expansion valve Operation summary of the linear expansion valveLinear expansion valve operation Output PhaseTrouble shooting Troubleshooting Any broken wire by using a tester Replace the fuseReplace the fan motor Indoor controller board fuse check YesFunction of DIP Switch Switch Pole SW11 SW14 SwitchOperation by switch Effective SW12SW4 Disassembly Procedure Operating Procedure PHOTOS&ILLUSTRATIONSRemoving the vane motor Removing the electrical parts boxRemoving the nozzle Removing the fan motor and line flow fan Removing the thermistorRoom temperature detectionRemoving the drain pump Part Name Specification Qty/set RemarksDrawing No E11 003Part number that is circled is not shown in the figure Electrical Parts PMFY-P06NBMU-E PMFY-P08NBMU-E RoHS E16R01 E01 E07 E14 E15 E04R01 23A 102 R01 E04 103R01 E32 114 R01 E01 079Qty/set E41 716R01 E27 246 R01 E21 246Made in Japan

PMFY-P08NBMU-E, PMFY-P12NBMU-E1, PMFY-P08NBMU-E1, PMFY-P06NBMU-E, PMFY-P12NBMU-E specifications

Mitsubishi Electronics has long been a pioneer in the field of air conditioning and climate control technologies. Among their impressive lineup of products is the PMFY series, which includes models such as the PMFY-P06NBMU-E1, PMFY-P12NBMU-E, PMFY-P06NBMU-E, PMFY-P08NBMU-E1, and PMFY-P12NBMU-E1. These advanced air conditioning systems are engineered to offer optimal comfort, energy efficiency, and innovative features for both residential and commercial applications.

One of the standout features of the PMFY series is its exceptional energy efficiency. Many models are equipped with advanced inverter technology, which allows for precise temperature control while significantly reducing energy consumption. This results in lower electricity bills and a reduced carbon footprint, making them an environmentally friendly choice for conscientious consumers.

Another key characteristic of the PMFY series is its advanced filtration system. These units are designed to improve indoor air quality by incorporating high-performance filters that effectively remove dust, allergens, and other pollutants. This is especially beneficial for individuals with respiratory conditions, contributing to a healthier indoor environment.

The PMFY models also boast a sleek and modern design, ensuring they blend seamlessly with any interior décor. Compact and lightweight, they can be installed in various settings, maximizing available space without compromising on performance.

Mitsubishi’s proprietary technology features an intelligent control system that allows users to manage their air conditioning units remotely. With options for Wi-Fi connectivity and compatibility with smart home systems, users can easily set schedules, adjust temperatures, and monitor energy usage from their smartphones or tablets.

Noise reduction is another important aspect of the PMFY series. These units operate at whisper-quiet levels, ensuring a peaceful atmosphere in homes and workplaces. This noise control technology is particularly advantageous for bedrooms, offices, and other quiet environments.

Lastly, the PMFY series is designed to be robust and reliable, with components that are engineered for durability and long life. Mitsubishi Electronics stands behind their products with comprehensive warranties, providing peace of mind and exceptional customer service.

In summary, the Mitsubishi Electronics PMFY-P06NBMU-E1, PMFY-P12NBMU-E, PMFY-P06NBMU-E, PMFY-P08NBMU-E1, and PMFY-P12NBMU-E1 are exemplary models that embody the essence of innovation, efficiency, and reliability. They represent the ideal choice for those seeking advanced climate control solutions suitable for a variety of spaces.