OPERATING PROCEDURE

 

PHOTOS

 

 

 

 

 

2. Removing the inverter assembly, inverter P.C. board

Photo 3

 

 

 

 

 

 

 

 

(1)

Remove the cabinet and panels. (Refer to 1.)

 

 

 

 

 

 

 

 

 

 

Screws of the

 

 

 

 

 

(2) Disconnect the lead wire to the reactor and the following

 

 

 

 

 

 

 

 

 

relay panel

 

 

 

 

 

 

connectors;

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

<Inverter P.C. board>

 

 

 

 

 

 

 

 

 

 

CN721 (R.V.coil)

 

 

 

 

 

 

 

 

 

 

CN932 (Fan motor)

 

 

 

 

 

 

 

 

 

 

CN641 (Defrost thermistor and discharge temperature ther-

 

 

 

 

 

 

 

 

 

 

mistor)

 

 

 

 

 

 

 

 

 

 

CN643 (Ambient temperature thermistor)

 

 

 

 

 

 

 

 

 

 

CN644 (Outdoor heat exchanger temperature thermistor)

 

 

 

 

 

 

 

 

 

 

CN724 (LEV)

 

 

 

 

 

 

 

 

 

(3)

Remove the compressor connector (CN61).

 

 

 

 

 

 

 

 

 

(4)

Remove the screws fixing the relay panel. (See Photo 3.)

 

 

 

 

 

 

 

 

 

(5) Remove the inverter assembly. (See Photo 4.)

 

 

 

 

 

 

 

 

 

(6) Remove the screw of the ground wire and screw of the

 

 

 

 

 

 

 

 

 

 

T.B.support. (See Photo 4.)

 

 

 

 

 

 

 

 

 

(7)

Remove the inverter P.C. board from the inverter assembly.

 

 

 

 

 

 

 

 

 

 

 

Photo 4 (inverter assembly)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Inverter

 

 

Heat sink

 

Screw of the

 

 

P.C. board

 

T.B.support

 

 

 

 

 

 

 

 

 

 

 

 

3. Removing R.V. coil

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T.B.support

(1)

Remove the cabinet and panels. (Refer to 1.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(2)

Remove the R.V. coil. (See Photo 5.)

 

 

 

 

 

 

 

 

 

 

 

Screw of the

 

 

ground wire

 

Photo 5

 

 

 

4. Removing the discharge temperature thermistor,

 

 

 

 

R.V. coil

defrost thermistor and outdoor heat exchanger tem-

 

 

 

 

perature thermistor.

 

 

 

 

(1)Remove the cabinet and panels. (Refer to 1.)

(2)Pull out the discharge temperature thermistor from its hold- er. (See Photo 5.)

(3)Pull out the defrost thermistor from its holder. (See Photo 6.)

(4)Pull out the outdoor heat exchanger temperature thermistor from its holder. (See Photo 6.)

Discharge temperature thermistor

33

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Image 33
Mitsubishi Electronics MUZ-FD09NA Removing the inverter assembly, inverter P.C. board Photo, Photo 4 inverter assembly

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.

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