108

	OPERATING PROCEDURE		PHOTOS
5. Removing the thermistor <Outdoor> (TH7)		Photo 7
(1)	Remove the service panel. (See photo 1.)
(1)	Remove the service panel. (See photo 1.)			Thermistor <Outdoor>
(2)	Remove the top panel. (See photo 1.)
			Electrical parts box
			Electrical parts box	(TH7)
(3)	Disconnect the connector TH7 (red) on the controller circuit


	board in the electrical parts box.

(4)Loosen the clamp for the lead wire in the rear of the electrical parts box. (See photo 4.)

(5)Pull out the thermistor <Outdoor> (TH7) from the sensor holder.

Note: In case of replacing thermistor <Outdoor> (TH7), replace it together with thermistor <Outdoor 2-phase pipe> (TH6), since they are combined together. Refer to No.4. to remove thermistor

<Outdoor 2-phase pipe>.

Sensor holder

6. Removing the thermistor <Discharge> (TH4)

Photo 8

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

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

(3)Remove the front panel. (See photo 1.)

(4)Remove the back panel. (See photo 1.)

(5)Remove the electrical parts box. (See photo 5.)

(6)Pull out the thermistor <Discharge> (TH4) from the sensor holder. (See photo 8.)

w When attaching the thermistor <Discharge> (TH4), place it to its original position.

		Thermistor <Discharge> (TH4)

7. Removing the 4-way valve coil (21S4)		Photo 9
and linear expansion valve coil (LEV-A)
(1)	Remove the service panel. (See photo 1.)			4-way valve coil
			4-way valve
(2)	Remove the top panel. (See photo 1.)			fixing screw

(3)Remove the front panel. (See photo 1.)

(4)Remove the conduit cover and cord cover.

(5)Remove the back panel. (See photo 1.)

(6)Remove the electrical parts box. (See photo 5.)

[Removing the 4-way valve coil (21S4)]

(7) Remove 1 4-way valve coil fixing screw (M4 ✕ 6).

(8) Remove the 4-way valve coil by sliding the coil to the right.

[Removing the linear expansion valve coil (LEV-A) ]

(9)Remove the linear expansion valve coil by sliding the coil upward.

Linear expansion valve

4-way valve coil

(21S4)

Linear expansion valve coil (LEV-A)

108 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.

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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.

OPERATING PROCEDURE

PHOTOS

Photo 7

Photo 8

Photo 9

and linear expansion valve coil (LEV-A)

[Removing the linear expansion valve coil (LEV-A) ]

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