10 11
TCHT011
TROUBLESHOOTING
9
<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.
9-1. TROUBLESHOOTING
Unit conditions at service Check code Actions to be taken for service (summary)
The trouble is reoccurring.
Displayed
Judge the problem and take a corrective action according
to “9-3. SELF-DIAGNOSIS ACTION TABLE”.
Not displayed
Conduct troubleshooting and ascertain the cause of the
trouble according to “9-4. TROUBLESHOOTING OF
PROBLEMS”.
The trouble is not reoccurring.
Logged
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,
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.
Not logged
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
ascertained.
4 There is no abnormality concerning of parts such as electrical
component, controller board, remote controller, etc.
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