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

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

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