Troubleshooting - Mitsubishi Electric PLA-RP1.6AA Service Manual

TROUBLESHOOTING

10
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 and control board of outdoor unit.
Actions to be taken for service, which depends on whether or not the inferior phenomenon is reoccurring at service, are sum-
marised in the table below. Check the contents below before investigating details.
Note : Refer to the manual of outdoor unit for malfunction-diagnosis method by remote controller.
Unit conditions at service
The inferior phenomenon is
reoccurring.
The inferior phenomenon is
not reoccurring.
Error code
Judge what is wrong and take a corrective action accord-
Displayed
ing to 10-2."Self-diagnosis action table".
Conduct trouble shooting and ascertain the cause of the
Not displayed inferior phenomenon according to 10-3."Trouble shooting
by inferior phenomena".
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 en-
vironment, refrigerant amount, weather when the infe-
rior phenomenon occurred, matters related to wiring
Logged
and etc.
2Reset error code logs and restart the unit after finishing
service.
3There is no abnormality concerning of parts such as
electrical component, controller board, remote controll-
er and etc.
1Recheck the abnormal symptom.
2Conduct trouble shooting and ascertain the cause of
the inferior phenomenon according to 10-3."Trouble
shooting by inferior phenomena".
3Continue to operate unit for the time being if the cause
Not logged
is not ascertained.
4There is no abnormality concerning of parts such as el-
ectrical component, controller board, remote controller
and etc.
63
Actions to be taken for service (summary)