PUZ-A42NHA2 PUZ-A42NHA2-BS

OPERATING PROCEDURE

PHOTOS & ILLUSTRATION

1. Removing the service panel and top panel

Figure 1

Top panel fixing screws

Top panel

(1) Remove 3 service panel fixing screws (5 ✕ 10) and slide

 

 

 

 

 

the hook on the right downward to remove the service

 

 

 

 

Service panel

panel.

Grille

 

Slide

 

(2) Remove screws (3 for front, 3 for rear/5 ✕ 10) of the top

 

 

fixing

 

 

 

 

 

 

 

 

panel and remove it.

 

 

 

 

screws

 

 

 

Fan grille

 

 

 

 

 

 

Grille

 

 

 

 

 

fixing

 

 

 

Service panel

 

screws

 

 

 

 

 

 

 

 

fixing screws

 

 

 

 

 

 

2. Removing the fan motor (MF1, MF2)

Photo 1

Front panel

Photo 2

Fan

(1) Remove the service panel. (See figure 1.)

Propeller

Fan motor fixing screws motor

 

(2)Remove the top panel. (See figure 1.)

(3)Remove 5 fan grille fixing screws (5 ✕ 10) to detach the fan grille. (See figure 1.)

(4)Remove a nut (for right handed screw of M6) to detach

the propeller. (See photo 1.)

 

(5) Disconnect the connectors, CNF1, CNF2 on controller

 

circuit board in electrical parts box.

Nut

(6)Remove 4 fan motor fixing screws (5 ✕ 25) to detach the fan motor. (See photo 2.)

Fan motor fixing screws

3. Removing the electrical parts box

Photo 3

(1)

Remove the service panel. (See figure 1.)

Controller circuit board

(2)

Remove the top panel. (See figure 1.)

(C.B.)

(3)Disconnect the indoor/outdoor connecting wire from termi- nal block.

(4) Remove all the following connectors from controller circuit board;

 

 

Electrical

 

 

fan motor, linear expansion valve, thermistor <Outdoor

 

 

parts box

pipe>, thermistor <Discharge>, thermistor <Outdoor 2-

 

 

 

phase pipe>, thermistor <Outdoor>, high pressure switch,

 

 

 

low pressure switch, 4-way valve coil. Then remove a

 

Electrical parts

screw (4 ✕ 8) from the valve bed to remove the lead wire.

 

 

box fixing screw

Pull out the disconnected wire from the electrical parts box.

 

 

 

 

<Diagram symbol in the connector housing>

 

Terminal block

• Fan motor (CNF1, CNF2)

 

 

(TB1)

• Linear expansion valve (LEV-A)

 

 

 

 

• Thermistor <Outdoor pipe> (TH3)

 

Valve bed

• Thermistor <Discharge> (TH4)

 

• Thermistor <Outdoor 2-phase pipe, Outdoor> (TH6/7)

 

 

 

• High pressure switch (63H)

 

Compressor

• Low pressure switch (63L)

 

(MC)

• 4-way valve coil (21S4)

 

Terminal cover

(5) Remove the terminal cover and disconnect the

 

(6) Remove an electrical parts box fixing screw (4 ✕ 10) and

Screw

detach the electrical parts box by pulling it upward. The

 

 

 

electrical parts box is fixed with 2 hooks on the left and 1

 

Cover panel

hook on the right.

 

(Front)

 

Cover panel fixing screws

116

Page 115 Page 117
Page 116
Image 116
Mitsubishi Electronics PUZ-A36NHA2, PUZ-A42NHA2-BS, PUZ-A30NHA2, PUY-A36NHA2 116, Removing the fan motor MF1, MF2
Page 115 Page 117

PUZ-A36NHA2-BS, PUY-A12NHA2, PUY-A42NHA2-BS, PUY-A30NHA2, PUZ-A36NHA2 specifications

Mitsubishi Electronics has long been a leader in the HVAC industry, and their range of air conditioning units, including the PUY-A24NHA2, PUZ-A24NHA2, PUY-A24NHA2-BS, PUZ-A42NHA2-BS, and PUY-A42NHA2, exemplifies their commitment to innovation and energy efficiency. These models are designed to provide optimal climate control for both residential and commercial applications, ensuring comfort throughout the year.

One of the defining features of these models is their advanced inverter technology, which allows for precise temperature control and reduced energy consumption. The inverter technology adjusts the compressor speed according to the cooling load, significantly lowering operating costs compared to traditional fixed-speed systems. This means that users can enjoy consistent comfort without worrying about surging energy bills.

The PUY and PUZ units come equipped with powerful indoor and outdoor components that enable efficient heat exchange. These systems provide excellent performance even in extreme weather conditions, with reliable operation at low ambient temperatures. This capability ensures that you can maintain a comfortable environment, no matter the season.

Additionally, the models are designed with quiet operation in mind. The outdoor units incorporate noise-reduction technology, ensuring that the systems operate at minimal sound levels. This is especially beneficial for residential areas or office environments, where maintaining a peaceful atmosphere is crucial.

Mitsubishi Electronics has also integrated smart technology into these units. With options for remote control via Wi-Fi, users can manage their air conditioning settings from anywhere, using their smartphones or tablets. This integration enhances user convenience and allows for more efficient scheduling and energy management.

These models are also known for their environmentally friendly refrigerants, such as R410A, which contribute to lower global warming potential and align with modern sustainability practices. By choosing Mitsubishi's PUY and PUZ series, consumers not only prioritize their comfort but also contribute to environmental conservation.

In summary, the Mitsubishi Electronics PUY-A24NHA2, PUZ-A24NHA2, PUY-A24NHA2-BS, PUZ-A42NHA2-BS, and PUY-A42NHA2 air conditioning units are equipped with cutting-edge technology, offering energy efficiency, quiet operation, and smart functionality. Whether for residential or commercial use, these units are designed to meet the demands of modern climate control while prioritizing energy savings and sustainability.
Top Page Image Contents