OPERATING PROCEDURE

PHOTOS

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

Photo 4

power board

 

(1) Remove the top panel, cabinet, service panel and the back

 

panel. (Refer to 1.)

Screws of the reactor

(2) Disconnect the following connectors;

 

<Electronic control P.C. board>

 

CN931 and CN932 (Fan motor)

 

CN795 (LEV)

 

CN661 (Discharge temperature thermistor, defrost

HPS

thermistor (MUZ) and outdoor heat exchanger

 

temperature thermistor)

 

CN663 (Ambient temperature thermistor)

 

CN681 (High pressure switch) (MUZ)

Discharge temperature

<Noise filter P.C. board>

thermistor

CN912 (4-way valve) (MUZ)

 

<Compressor>

 

<Reactor>

 

(4)Remove the screws fixing the relay panel.

(5)Remove the inverter assembly.

(6)Disconnect all connectors and lead wires on the electronic control P.C. board.

(7)Remove the electronic control P.C. board from the inverter

 

assembly.

Photo 5 (Inverter assembly)

(8)

Remove the screws fixing the power board assembly.

(9)

Disconnect all connectors and lead wires on the power

Screws of the power board assembly

 

board.

(10)

Remove the power board from the inverter assembly.

 

(11) Disconnect all connectors and lead wires on the noise filter

 

 

P.C. board.

 

(12)

Remove the noise filter P.C. board from the inverter

 

 

assembly.

 

3. Removing R.V. coil (MUZ)

(1)Remove the top panel, cabinet, service panel and the back panel. (Refer to 1.)

(2) Disconnect the following connectors;

 

<Noise filter P.C. board>

Screws of the relay panel

CN912 (4-way valve)

(3) Remove the R.V. coil. (Photo 9)

Photo 6

 

 

Screws of the

 

relay panel

Propeller

40

Page 40
Image 40
Mitsubishi Electronics MUZ-D36NA, MUY-D36NA, U1, MUZ-D30NA, MUY-D30NA Photo 5 Inverter assembly, Removing R.V. coil MUZ, Hps

MUY-D36NA, MUZ-D30NA, U1, MUY-D30NA, MUZ-D36NA specifications

Mitsubishi Electronics has long been at the forefront of innovation in heating and cooling solutions, and its latest lineup of multi-zone air conditioning units—MUZ-D36NA, MUY-D30NA, U1, MUZ-D30NA, and MUY-D36NA—reflects this commitment to quality and efficiency. Designed for both residential and commercial applications, these units offer advanced features that enhance comfort and energy savings.

One of the standout characteristics of these models is their energy efficiency. Each unit is equipped with high SEER (Seasonal Energy Efficiency Ratio) ratings, making them ideal for users looking to reduce energy consumption while maintaining optimal indoor climates. The efficiency is complemented by inverter technology, which allows the compressor to adjust its speed based on the cooling demand. This results in a smoother operation, reduced noise levels, and significant energy savings over time.

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