Mitsubishi Electric PUHZ-SHW80VHA Service Manual page 21

1 0 T R O U B L E S HO O T I N G
1 0 - 1 . T R O U B L E S HO O T I N G
< C h ec k c ode disp lay ed b y self- diagnosis and ac tions to b e taken for serv ic e ( summary ) >
Unit conditions at service
The trouble is reoccurring.
The trouble is not reoccurring.
1 0 - 2 . C HE C K P O I N T U N D E R T E S T R U N
1 0 - 2 - 1 . B efore test run
( 1 ) B efore test run
"
OCH526C
Check code Actions to be taken for service (summary)
Judge what is wrong and take a corrective action according
Displayed
to "10-4. SELF-DIAGNOSIS ACTION TAB LE".
Conduct troubleshooting and ascertain the cause of the
Not displayed
trouble according to "10-5. TROUB LESHOOTING OF
PROB LEMS".
1Consider the temporary defects such as the work of
protection devices in the refrigerant circuit including
compressor, poor connection of wiring, noise, etc.
Re-check the symptom, and check the installation
environment, refrigerant amount, weather when the
trouble occurred, matters related to wiring, etc.
Logged
2Reset check code logs and restart the unit after finishing
service.
3There is no abnormality in electrical component,
controller board, remote controller, etc.
1Re-check the abnormal symptom.
2Conduct troubleshooting and ascertain the cause of the
trouble according to "10-5. TROUB LESHOOTING OF
PROB LEMS".
Not logged 3Continue to operate unit for the time being if the cause
is not ascertained.
4There is no abnormality concerning of parts such as
electrical component, controller board, remote controller,
etc.