Mitsumi electronic PLA-A36AA, PLA-A30AA, PLA-A42AA, PLA-A12AA, PLA-A24AA, PLA-A18AA Troubleshooting

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10 TROUBLESHOOTING

10-1. TROUBLESHOOTING

<Error code display by self-diagnosis and actions to be taken for service (summary)>

Present and past error codes are logged and displayed on the wired remote controller or controller board of outdoor unit. Actions to be taken for service and the inferior phenomenon reoccurrence at field are summarized in the table below. Check the contents below before investigating details.

Unit conditions at service

Error code

Actions to be taken for service (summary)

 

 

 

 

 

 

Displayed

Judge what is wrong and take a corrective action

 

 

according to “SELF-DIAGNOSIS ACTION TABLE” (10-3).

 

 

 

 

The inferior phenomenon is

 

 

 

reoccurring.

 

Identify the cause of the inferior phenomenon and take

 

 

 

 

 

Not displayed

a corrective action according to “TROUBLESHOOTING

 

 

 

BY INFERIOR PHENOMENA ” (10-4).

 

 

 

 

 

 

 

Consider the temporary defects such as the work of

 

 

 

protection devices in the refrigerant circuit including

 

 

 

compressor, poor connection of wiring, noise and etc.

 

 

 

Re-check the symptom, and check the installation

 

 

 

environment, refrigerant amount, weather when the

 

 

Logged

inferior phenomenon occurred, and wiring related.

 

 

Reset error code logs and restart the unit after finishing

 

 

 

 

 

 

service.

 

 

 

There is no abnormality in electrical components,

 

The inferior phenomenon is

 

controller boards, and remote controller.

 

 

 

 

not reoccurring.

 

Recheck the abnormal symptom.

 

 

 

 

 

 

Identify the cause of the inferior phenomenon and take

 

 

 

a corrective action according to “TROUBLESHOOTING

 

 

Not logged

BY INFERIOR PHENOMENA ” (10-4).

 

 

Continue to operate unit for the time being if the cause

 

 

 

is not ascertained.

 

 

 

There is no abnormality in electrical components,

 

 

 

controller boards, remote controller etc.

 

 

 

 

 

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Contents Contents Revised EDITION-BReference Manual Technical Data BookTechnical Changes PLA-A12AA PLA-A18AA PLA-A24AA PLA-A30AA PLA-A36AA PLA-A42AASafety Precaution Always Observe for SafetyAdditional refrigerant charge Part Names and Functions Indoor UnitDisplay Section Wireless remote controller PLA-A24AA/ PLA-A24AA1Single phase,60Hz, 208/230V SpecificationsService Ref PLA-A42AA/ PLA-A42AA1Single phase,60Hz, 208/230V PLA-A30AA/ PLA-A30AA1Single phase,60Hz, 208/230VPLA-A36AA/ PLA-A36AA1Single phase,60Hz, 208/230V PLA-A12AA1 Noise Criterion CurvesPLA-A12AA PLA-A36AAOutlines and Dimensions Unit inchmmWiring Diagram Please set the voltage usingRefrigerant System Diagram Heat exchangerTroubleshooting TroubleshootingMALFUNCTION-DIAGNOSIS Method by Remote Controller Case of trouble during operationOutput pattern B Only A-CONTROL Please Wait SELF-DIAGNOSIS Action Table Working Pipe temperatureCause Countermeasure Freezing/overheating protection is ErrorE0/signal receiving errorE4 Cause Countermeasure Pipe temperature thermistorRemote controller transmission ErrorE3/signal receiving errorE5Remote controller control board Error Signal receiving errorError Transmitting error Indoor controller boardIs off Troubleshooting by Inferior PhenomenaPhenomena Cause Countermeasure Ply system3Upward/downward vane 4Receiver for wireless remoteIs blinking Performance failureEmergency Operation Fan motor MF Thermistor for lower temperature Test Point Diagram Indoor controller board Functions of DIP Switch and Jumper Wire SW2Disassembly Procedure Operating Procedure Photos & IllustrationsRemoving the fan motor Removing the drain pump and drain sensor Wiring Recom QtyPLA-A·AA Functional and Structural Parts PLA-A36AA98 PLA-A42AA 12, 18, 24 Symbol Qty MendedFunctional and Structural Parts PLA-A36AA PLA-A42AA 556RoHS Parts List 30/36/42AA1Functional and Structural Parts WiringSymbol Qty PLA-A18AA1 PLA-A24AA1PLA-A30AA1PLA-A36AA198 RoHS Parts No Parts Name Functional and Structural Parts PLA-A36AA1 PLA-A42AA1 RemarksPage Made in Japan

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.
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