10-9. TEST POINT DIAGRAM

<CAUTION> TEST POINT1 is high voltage.

Outdoor controller circuit board

PUZ-A18/24/30/36/42NHA2 PUZ-A18/24/30/36/42NHA2-BS PUY-A12/18/24/30/36/42NHA2 PUY-A12/18/24/30/36/42NHA2-BS

SW7

Demand control setting

SW6

Model select

SW4

Test operation

SWP

Pump down

SW5

Function switch

SW1

CN51

Forced defrost, detect history record reset, refrigerant address

External signal output

 

• Compressor operating

 

signal

 

• Abnormal signal

CNDM

1 to 2:

Input of low-level sound priority mode

1 to 3:

Input of external con- tact point

SW8

Wiring replace

CNM

Connect to A control service tool

CNMNT Connect to M-NET adapter(CN5)

CNVMNT Connect to M-NET adapter(CND)

LEV-A

Linear expansion valve

63L

Low pressure switch <A42 only>

CN52C

(Connect to the noise filter circuit board (CN52C))

CN4

Transmission to out- door power circuit board (CN4)

SV2

Bypass valve <A24/30/36 only>

21S4

Four-way valve <PUZ only>

TH4

Thermistor <Discharge>

TH3

Thermistor <Outdoor pipe>

TH7/6

Thermistor <Outdoor/

2-phase pipe>

63H

High pressure switch

VFG

(TEST POINT 4)

(Voltage between right pins of PC5C and PC5D, pin 3 and pin 4)

(Same as

(CNF17(+)-4(-))

VSP

(TEST POINT 3)

(Voltage between pins of C5A, C5B):

DC 0V (when stopped),

DC 1– 6.5VCNF1, CNF2

(when operated) Connect to the fan motor 1-4: 280V DC

5-4: 15V DC

6-4: 0-6.5V DC

7-4: 15V DC(When stopped)

7.5V DC(When operated)

(0V-15V pulse)(CNF2 is only for A42)

CNDC

280V DC (1+, 3-) (Outdoor power circuit board)

CN2

Connect to the outdoor power circuit board (CN2) 1-5: Reception from

power circuit board 2-5: Zero cross signal

(0-5V DC)

3,4: 18V DC

6-5: 16V DC

7-5: 16V DC

CNAC

2 to 4:

Power supply for out- door controller circuit board (208V-230V AC)

1 to 3:

Power supply for indoor and outdoor unit con- nection wire (208/230V AC)

CNS

S1-S2:A208/230V AC

+ -

Communication power supply D71 Voltage

24V DC

64

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Mitsubishi Electronics PUZ-A36NHA2-BS, PUZ-A42NHA2-BS, PUZ-A30NHA2, PUY-A36NHA2, PUZ-A18NHA2-BS Test Point Diagram
Page 63 Page 65

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.
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