Mitsumi electronic PLA-A24AA, PLA-A30AA Troubleshooting by Inferior Phenomena, Is off, Ply system

Models: PLA-A30AA PLA-A42AA PLA-A18AA PLA-A12AA PLA-A24AA PLA-A36AA

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10-4. TROUBLESHOOTING BY INFERIOR PHENOMENA

Note: Refer to the manual of outdoor unit for the detail of remote controller.

Phenomena

Cause

Countermeasure

(1)LED2 on indoor controller board • When LED1 on indoor controller board is also off.

 

is off.

1 Power supply of rated voltage is not supplied to out-

1 Check the voltage of outdoor power

 

door unit.

supply terminal block (L1,L2).

 

 

• When AC 208/230V is not detected,

 

 

check the power wiring to outdoor unit

 

 

and the breaker.

 

 

• When AC 208/230V is detected,

 

 

check 2 (below).

 

2 Defective outdoor controller circuit board

2 Check the voltage between outdoor

 

 

terminal block S1 and S2.

 

 

• When AC 208/230V is not detected.

 

 

—Check the fuse on outdoor controller

 

 

circuit board.

 

 

—Check the wiring connection.

 

 

• When AC 208/230V is detected,

 

 

check 3 (below).

 

3 Power supply of 208/230V is not supplied to indoor

3 Check the voltage between indoor terminal

 

unit.

block S1 and S2.

 

 

• When AC 208/230V is not detected,

 

 

check indoor/outdoor unit connecting

 

 

wire for miswiring.

 

 

• When AC 208/230V is detected,

 

 

check 4 (below).

 

4 Defective indoor power board

4 Check voltage output from CN2S on indoor

 

 

power board (DC13.1V). Refer to 10-7-1.

 

 

• When no voltage is output, check the

 

 

wiring connection.

 

 

• When output voltage is between

 

 

DC12.5V and DC13.7V, check 5

 

 

(below).

 

5 Defective indoor controller board

5 Check the wiring connection between

 

 

indoor controller board and indoor power

 

 

board. Check the fuse on indoor controller

 

 

board. If no problems are found, indoor

 

 

controller board is defective.

(For the separate indoor/outdoor unit power sup-

 

ply system)

1 Check the voltage of indoor power supply

1 Power supply of 208/230V AC is not supplied to

indoor unit.

terminal block (L1,L2).

 

• When AC208/230V is not detected,

 

check the power supply wiring.

 

• When AC208/230V is detected, check

 

2 (below).

2 The connectors of the optional replacement kit are

2 Check that there is no problem in the

not used.

method of connecting the connectors.

 

• When there are problems in the method

 

of connecting the connectors, connect

 

the connector correctly referring to instal-

 

lation manual of an optional kit.

 

• When there is no problem in the

 

method of connecting the connectors,

 

check 3 (below).

3 Defective indoor controller board

3 Check voltage output from CNDK on

 

indoor controller board.

 

• When AC208/230V is not detected.

 

—Check the fuse on indoor controller board.

 

—Check the wiring connection between

 

indoor power supply terminal block and

 

CND on indoor controller board.

 

• When AC208/230V is detected, check

 

4 (below).

4 Defective indoor power board

4 Check voltage output from CN2S on

 

indoor power board.

 

• When no voltage output, check the

 

wiring connection between CNDK on

 

indoor controller board and CNSK on

 

indoor power board.

 

If no problem are found, indoor power

 

board is defective.

 

• When DC12.5~13.7V is detected,

 

check the wiring connection between

 

CN2S on indoor power board and

 

CN2D on indoor power board.

 

If no problem are found, indoor con-

 

troller board is defective.

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Mitsumi electronic PLA-A24AA Troubleshooting by Inferior Phenomena, Phenomena Cause Countermeasure, Is off, Ply system

PLA-A30AA, PLA-A42AA, PLA-A18AA, PLA-A12AA, PLA-A24AA specifications

Mitsumi Electric, a leading manufacturer in the electronic components industry, offers a diverse range of products tailored to meet various application needs. Among the offerings are the PLA series devices: PLA-A36AA, PLA-A24AA, PLA-A12AA, PLA-A18AA, and PLA-A42AA. These components are renowned for their cutting-edge features, robust technologies, and versatile characteristics, making them essential in modern electronics.

The PLA-A36AA is recognized for its high-speed operation and low power consumption, ideal for applications needing efficient energy usage. It features an advanced thermal management system to ensure optimal performance even in high-temperature environments. The integrated circuitry minimizes noise interference, providing clearer signal processing essential for audio and communication devices.

Moving on to the PLA-A24AA, this model stands out due to its compact design and reliability. It is particularly suited for space-constrained applications without compromising performance. The PLA-A24AA employs surface-mount technology, making it easier to integrate into various electronic assemblies. Its enhanced durability against mechanical stress and environmental conditions ensures longevity and stable operation.

The PLA-A12AA is engineered for versatile applications, offering flexibility in various settings, from consumer electronics to industrial machinery. With its user-friendly interface and programmable features, it allows for extensive customization, catering to specific user requirements. Additionally, its energy-efficient design contributes to sustainable practices in electronics manufacturing.

The PLA-A18AA is celebrated for its high-frequency performance, making it a popular choice for telecommunications and data transmission applications. This model incorporates advanced filtering technologies to facilitate reliable signal processing, an essential feature in today's high-speed internet and communication networks.

Finally, the PLA-A42AA combines robust construction with high-performance metrics, designed for heavy-duty applications in automotive and industrial environments. Its resistance to extreme conditions, including temperature fluctuations and vibrations, ensures that it performs reliably under demanding circumstances.

Through a commitment to innovation and quality, Mitsumi Electric’s PLA series exemplifies state-of-the-art technology in electronic components, catering to a broad spectrum of industry needs while promoting efficiency and reliability. These models reflect the evolution of electronic design, adapting to the fast-paced demands of modern technology, making them invaluable assets in any tech-focused endeavor.