17
16
17
TCH067
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 or controller 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
Not displayed
Judge what is wrong and take a corrective action according
to “9-3. SELF-DIAGNOSIS ACTION TABLE”.
Conduct troubleshooting and ascertain the cause of the
trouble according to “9-4. TROUBLESHOOTING
OF PROBLEMS”.
The trouble 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, etc.
Re-check the symptom, and check the installation
environment, refrigerant amount, weather when the
trouble occurred, matters related to wiring, etc.
2
Reset check 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 ascertained.
4
There is no abnormality concerning of parts such as
electrical component, controller board, remote controller, etc.
<
Self-check>
9-2. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER
<In case of trouble during operation>
When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform
unusual stop.
5
B
1
A
4
2
3
1. Press the
button
1
to stop the air conditioner.
is on), press the
button
3
to disable it (
is off).
2. Press the
button
2
for 5 seconds.
A
3. Press the button
5
to select the refrigerant address (M-NET address)
B
of the indoor
4. Press the
button
4
.
5. Press the
button
1
.
A
and the refrigerant address (M-NET address)
B
indoor unit and the number of blinks of the OPERATION
INDICATOR lamp.
check is completed.
f
[Procedure]
TCH067.indd 16
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29/9/2564 13:36:32
29/9/2564 13:36:32
