10-4. TROUBLE CRITERION OF MAIN PARTS MUZ-FD09NAMUZ-FD12NA

Part name

 

Check method and criterion

 

 

 

 

 

 

 

Figure

Defrost thermistor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(RT61)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ambient temperature

Measure the resistance with a tester.

 

 

 

 

 

 

 

 

 

 

 

 

 

thermistor (RT65)

Refer to 10-6. “Test point diagram and voltage”,1. “Inverter P.C.

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor heat ex-

board”, the chart of thermistor.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

changer temperature

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

thermistor (RT68)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Discharge tem-

Measure the resistance with a tester. Before measurement, hold the

 

 

 

 

 

 

 

 

 

 

 

 

 

perature thermistor

 

 

 

 

 

 

 

 

 

 

 

 

 

thermistor with your hands to warm it up.

 

 

 

 

 

 

 

 

 

 

 

 

 

(RT62)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fin temperature

Refer to 10-6. “Test point diagram and voltage”,1. “Inverter P.C.

 

 

 

 

 

 

 

 

 

 

 

 

 

board”, the chart of thermistor.

 

 

 

 

 

 

 

 

 

 

 

 

 

thermistor (RT64)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance between terminals using a tester.

WHT

RED BLK

 

(Winding temperature : -4 ~ 104 °F (-20 ~ 40 °C))

 

 

 

 

 

 

 

2

 

 

 

3

 

 

1

Compressor

 

Normal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U-V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U-W

 

1.52 ~ 2.17 Ω

 

 

V

 

 

 

 

U

 

 

 

 

 

V-W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance between lead wires using a tester.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Part temperature : 14 ~ 104 °F (-10 ~ 40 °C))

WHT

RED BLK

 

 

 

 

 

 

 

2

 

 

3

 

 

 

 

1

 

Outdoor fan motor

 

Color of lead wire

 

Normal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED – BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK – WHT

 

11 ~ 16 Ω

 

 

V

 

 

 

U

 

 

 

 

 

WHT – RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance using a tester.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Part temperature : 14 ~ 104 °F (-10 ~ 40 °C))

 

 

 

 

 

 

 

 

 

 

 

 

 

R. V. coil (21S4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

970 ~ 1380 Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance using a tester.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Part temperature : 14 ~ 104 °F (-10 ~ 40 °C))

WHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

 

LEV

Expansion valve coil

 

Color of lead wire

 

Normal

 

ORN

 

 

 

 

 

 

 

 

 

 

WHT – RED

 

 

 

 

 

 

 

 

 

 

 

 

(LEV)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED – ORN

 

37 ~ 54 Ω

 

 

 

 

 

 

YLW

 

 

 

BRN

 

 

BLU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YLW – BRN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BRN – BLU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22

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Mitsubishi Electronics service manual Trouble Criterion of Main Parts MUZ-FD09NAMUZ-FD12NA, Wht Red
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MUZ-FD09NA specifications

The Mitsubishi Electronics MUZ-FD09NA is a highly efficient and versatile air conditioning unit designed for both residential and light commercial applications. This model is part of Mitsubishi's advanced range of split-system air conditioners which emphasize energy efficiency, comfort, and innovative technology.

One of the standout features of the MUZ-FD09NA is its energy efficiency. The unit boasts an impressive SEER (Seasonal Energy Efficiency Ratio) rating, which translates to reduced energy consumption and lower utility bills. This makes it an eco-friendly option for users looking to minimize their carbon footprint while enjoying comfortable indoor climates year-round.

The MUZ-FD09NA utilizes advanced inverter technology, which enables the compressor to adjust its speed based on the cooling or heating demand. This not only enhances comfort by maintaining a steady temperature but also significantly reduces energy consumption compared to traditional fixed-speed systems. Additionally, the inverter technology allows for quieter operation, making it ideal for use in bedrooms or study areas where noise can be disruptive.

For air purification, the MUZ-FD09NA is equipped with a high-efficiency filtration system that removes dust, allergens, and other particles from the air. This feature is especially beneficial for individuals with allergies or respiratory issues, ensuring cleaner and healthier indoor air quality.

In terms of user convenience, the unit comes with a user-friendly remote control, allowing for easy adjustment of settings from a distance. Some models may also offer Wi-Fi capability, enabling users to control their air conditioning unit through a smart device, even when away from home.

The MUZ-FD09NA is designed to operate in a wide range of temperatures, making it suitable for various climates. It can effectively provide cooling in the summer and heating in the winter, ensuring comfort throughout the year.

Furthermore, the unit features a compact and sleek design, allowing for easy installation in a variety of spaces without compromising aesthetics.

Overall, the Mitsubishi Electronics MUZ-FD09NA combines energy efficiency, advanced technology, and user-friendly features, making it a reliable choice for maintaining a comfortable indoor environment. Whether for residential or light commercial use, this air conditioning unit stands out as an effective solution for climate control needs.
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