Manuals / Mitsumi electronic / Household Appliance / Air Conditioner

Mitsumi electronic PLA-A18AA Is blinking, 3Upward/downward vane, Performance failure, Controller

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

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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 lit.

1 Check the setting of refrigerant address

is off.

1 Mis-setting of refrigerant address for outdoor unit

 

(There is no unit corresponding to refrigerant

for outdoor unit.

 

address “0”.)

Set the refrigerant address to “0”.

 

 

(For grouping control system under

 

 

which 2 or more outdoor units are

 

 

connected, set one of the units to “0”.)

 

 

Set refrigerant address using SW1 (3-6)

 

 

on outdoor controller circuit board.

 

 

 

(2)LED2 on indoor controller board

• When LED1 on indoor controller board is also blinking.

Check indoor/outdoor unit connecting wire

is blinking.

Connection failure of indoor/outdoor unit connecting

for connection failure.

 

wire

 

 

• When LED1 is lit.

 

 

1 Miswiring of remote controller wires

1 Check the connection of remote con-

 

Under twin indoor unit system, 2 indoor units are

troller wires in case of twin indoor unit

 

wired together.

system. When 2 indoor units are wired in

 

 

one refrigerant system, connect remote

 

 

controller wires to one of those units.

 

2 Refrigerant address for outdoor unit is wrong or not

2 Check the setting of refrigerant address

 

set.

in case of grouping control system.

 

Under grouping control system, there are some units

If there are some units whose refrigerant

 

whose refrigerant address is 0.

addresses are 0 in one group, set one of

 

 

the units to 0 using SW1 (3-6) on outdoor

 

 

controller circuit board.

 

3 Shortcut of remote controller wires

34 Remove remote controller wires and

 

4 Defective remote controller

check LED2 on indoor controller board.

 

 

• When LED2 is blinking, check the

 

 

shortcut of remote controller wires.

 

 

• When LED2 is lit, connect remote con-

 

 

troller wires again and:

 

 

if LED2 is blinking, remote controller is

 

 

defective; if LED2 is lit, connection fail-

 

 

ure of remote controller terminal block

 

 

etc. has returned to normal.

 

 

 

(3)Upward/downward vane

1 The vane is not downward during defrosting and

1 Normal operation (The vane is set to hor-

performance failure

heat preparation and when the thermostat is OFF in

izontal regardless of remote control.)

 

HEAT mode. (Working of COOL protection function)

 

 

2 Vane motor does not rotate.

2 Check 2 (left).

 

• Defective vane motor

• Check the vane motor. (Refer to “How

 

• Breaking of wire or connection failure of connector

to check the parts”.)

 

 

• Check for breaking of wire or connec-

 

 

tion failure of connector.

 

3 Upward/downward vane does not work.

3 Normal operation (Each connector on

 

• The vane is set to fixed position.

vane motor side is disconnected.)

 

 

 

(4)Receiver for wireless remote

1 Weak batteries of wireless remote controller

1 Replace batteries of wireless remote con-

controller

2 Contact failure of connector (CNB) on wireless

troller.

 

2~4

 

remote controller board

Check contact failure of each connector.

 

(Insert failure)

If no problems are found of connector,

 

3 Contact failure of connector (CN90) on indoor con-

replace indoor controller board. When

 

troller board (Insert failure)

the same trouble occurs even if indoor

 

4 Contact failure of connector between wireless

controller board is replaced, replace

 

remote controller board and indoor controller board

wireless remote controller board.

 

 

 

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Mitsumi electronic PLA-A18AA Is blinking, 3Upward/downward vane, Performance failure, 4Receiver for wireless remote
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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.

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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.