9-5. TROUBLE CRITERION OF MAIN PARTS MSZ-FD09NAMSZ-FD12NA

Part name

Check method and criterion

 

 

Figure

Room temperature therm- Measure the resistance with a tester.

 

 

 

istor (RT11)

Refer to 9-7. "Test point diagram and voltage", "Indoor electronic control P.C.

 

Indoor coil thermistor

 

board", the chart of thermistor.

 

 

 

 

(RT12, RT13)

 

 

 

 

 

Indoor fan motor (MF)

Check 9-6. .

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance between the terminals with a tester.

 

 

(Part temperature 50 ~ 86°F (10 ~ 30°C))

 

 

 

Horizontal vane motor

 

 

 

 

RED

 

Color of the lead wire

Normal

 

ROTOR

(MV1)

 

 

 

 

 

Horizontal vane motor (MV1)

 

313 ~ 375 Ω

 

YLW

Vertical vane motor

 

 

 

 

 

 

BRN

(MV2)

Vertical vane motor (MV2)

BRN-other one

268 ~ 322 Ω

 

 

 

i-see Sensor motor

 

 

 

 

 

i-see Sensor motor (MT)

 

223 ~ 268 Ω

 

ORN GRN

(MT)

 

 

 

 

 

 

 

 

 

 

 

Cover the i-see Sensor with black vinyl tape. Then, turn ON the power

 

supply. (i-see Sensor is energized.) Measure the voltage between connector

 

terminals of i-see Sensor with a tester.

 

 

(Part temperature 50 ~ 104°F (10 ~ 40°C))

 

 

i-see Sensor

 

 

 

 

 

 

 

 

4

 

 

Cover the i-see

 

 

 

 

3

 

 

Sensor with

 

 

 

 

 

 

 

 

 

 

2(GND)

 

 

black vinyl tape.

 

 

 

 

 

 

 

 

 

 

 

 

 

i-see Sensor P.C. board

1

 

 

 

i-see Sensor (RR)

connector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Black vinyl tape

i-see Sensor connector terminals

Normal range

(GND) - (+)

1.874 ~ 3.387 VDC

(+) - (GND)

1.010 ~ 1.420 VDC

NOTE: Pay attention to static electricity.

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Mitsubishi Electronics service manual Trouble Criterion of Main Parts MSZ-FD09NAMSZ-FD12NA

MSZ-FD09NA specifications

The Mitsubishi Electronics MSZ-FD09NA is a wall-mounted split-type air conditioning unit that exemplifies the brand's commitment to efficiency, comfort, and advanced technology. This unit is designed to provide optimal cooling and heating solutions for residential and light commercial spaces, ensuring a comfortable environment year-round.

One of the standout features of the MSZ-FD09NA is its impressive energy efficiency rating. With a high SEER (Seasonal Energy Efficiency Ratio) rating, it utilizes less energy while maintaining high performance, which can lead to significant cost savings on utility bills. This unit adheres to modern energy conservation standards, making it an environmentally friendly choice that appeals to eco-conscious consumers.

The MSZ-FD09NA is equipped with Mitsubishi’s advanced inverter technology, which allows the compressor to adjust its speed according to the desired temperature. This ensures that energy is used efficiently and that fluctuations in temperature are minimized, resulting in enhanced comfort levels. The inverter technology also helps in reducing noise levels, creating a quieter operation compared to traditional HVAC systems.

Another remarkable characteristic of the MSZ-FD09NA is its sleek and modern design, which seamlessly integrates into various interior décors. The unit is available in a clean white finish, making it an unobtrusive addition to any room. Furthermore, it has a compact design that maximizes floor space while providing powerful performance.

The unit also features cutting-edge air filtration systems designed to purify indoor air. With a multi-stage filtration process, including a catechin filter and an anti-allergen enzyme filter, the MSZ-FD09NA effectively captures dust, allergens, and other airborne particles. This feature is particularly beneficial for those with respiratory issues or allergies, contributing to a healthier living environment.

In addition, the MSZ-FD09NA is compatible with smart control options. Users can control their air conditioner remotely through a smartphone app, making it convenient to adjust settings from anywhere. This smart technology allows for programmable scheduling, enabling users to optimize the unit's operation based on their lifestyle.

In summary, the Mitsubishi Electronics MSZ-FD09NA stands out due to its energy efficiency, advanced inverter technology, modern design, high-quality air filtration, and smart control options, making it an excellent choice for those seeking reliable heating and cooling solutions.