Mitsubishi Electric PEAD-RP1.6EA, Technical & Service Manual

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9
TROUBLE-SHOOTING
<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-
marized in the table below. Check the contents below before investigating details.
9-1. TROUBLE-SHOOTING
Unit conditions at service Error code Actions to be taken for service (summary)
The inferior phenomenon is
reoccurring.
Displayed
Not displayed
Judge what is wrong and take a corrective action accord-
ing to “Self-diagnosis action table” (P.41).
Conduct trouble shooting and ascertain the cause of the
inferior phenomenon according to “Trouble shooting by
inferior phenomena” (P.44).
The inferior phenomenon is
not reoccurring.
Logged
Not logged
1
Consider the temporary defects such as the work of
protection devices in the refrigerant circuit including
compressor, poor connection of wiring, noise and etc.
Recheck the symptom, and check the installation en-
vironment, refrigerant amount, weather when the infe-
rior phenomenon occurred, matters related to wiring
and etc.
2
Reset error code logs and restart the unit after finishing
service.
3
There is no abnormality concerning of parts such as
electrical component, controller board, remote controll-
er and etc.
1
Recheck the abnormal symptom.
2
Conduct trouble shooting and ascertain the cause of
the inferior phenomenon according to “Trouble shooting
by inferior phenomena” (P.44).
3
Continue to operate unit for the time being if the cause
is not ascertained.
4
There is no abnormality concerning of parts such as el-
ectrical component, controller board, remote controller
and etc.