Troubleshooting - Mitsubishi TPKA0A0241KA80A Service Manual

9

TROUBLESHOOTING

9-1. TROUBLESHOOTING
<Check code displayed by self-diagnosis and actions to be taken for service (summary)>
Present and past check codes are logged, and they can be displayed on the wired remote controller and control board of out-
door unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summa-
rized in the table below. Check the contents below before investigating details.
Unit conditions at service
The trouble is reoccurring.
The trouble is not reoccurring.
TCHT011
Check code
Judge the problem and take a corrective action according
Displayed
to "9-3. SELF-DIAGNOSIS ACTION TABLE".
Conduct troubleshooting and ascertain the cause of the
Not displayed trouble according to "9-4. TROUBLESHOOTING OF
PROBLEMS".
1 Consider 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 environ-
ment, refrigerant amount, weather when the trouble occurred,
Logged
matters related to wiring, etc.
2 Reset check error code logs and restart the unit after finishing service.
3 There is no abnormality in electrical component,
controller board, remote controller, etc.
1 Re-check the abnormal symptom.
2 Conduct troubleshooting and ascertain the cause of the trouble
according to "9-4. TROUBLESHOOTING OF PROBLEMS".
3 Continue to operate unit for the time being if the cause is not
Not logged
ascertained.
4 There is no abnormality concerning of parts such as electrical
component, controller board, remote controller, etc.
11
Actions to be taken for service (summary)