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Troubleshooting - Mitsubishi Electric PEAD-RP35EA Service Manual

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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
The inferior phenomenon is
reoccurring.
The inferior phenomenon is
not reoccurring.
22
Error code
Judge what is wrong and take a corrective action
Displayed
according to "SELF-DIAGNOSIS ACTION TABLE" (10-2).
Identify the cause of the inferior phenomenon and take
Not displayed
a corrective action according to "TROUBLESHOOTING
BY INFERIOR PHENOMENA " (10-3).
1Consider 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
inferior phenomenon occurred, and wiring related.
Logged
2Reset error code logs and restart the unit after finishing
service.
3There is no abnormality in electrical components,
controller boards, and remote controller.
1Recheck the abnormal symptom.
2Identify the cause of the inferior phenomenon and take
a corrective action according to "TROUBLESHOOTING
BY INFERIOR PHENOMENA " (10-3).
3Continue to operate unit for the time being if the cause
Not logged
is not ascertained.
4There is no abnormality in electrical components,
controller boards, remote controller etc.
Actions to be taken for service (summary)

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