11-2. Primary Judgment
To diagnose the troubles, use the following methods.
1) Judgment by flashing LED of indoor unit
2) Self-diagnosis by service check remote controller
3) Judgment of trouble by every symptom
Firstly use the method 1) for diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles.
11-3. Judgment by Flashing LED of Indoor Unit
While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the
contents of self-diagnosis are displayed with block on the indoor unit indication section.
Table 11-3-1
NOTES :
1. The contents of items B and C and a part of item E are displayed when air conditioner operates.
2. When item B and C, and item B and a part of item E occur concurrently, priority is given to the block of item B.
3. The check codes can be confirmed on the remote controller for servicing.
OPERATION
Flashing display (1 Hz)
OPERATION
TIMER
Flashing display (5 Hz)
OPERATION
Flashing display (5 Hz)
OPERATION
TIMER (
White
)
Flashing display (5 Hz)
OPERATION
Flashing display (5 Hz)
Protective circuit operation for indoor P.C. board
Protective circuit operation for connecting cable
and serial signal system
Protective circuit operation for outdoor P.C. board
Protective circuit operation for others
(including compressor)
Power failure (when power is ON)
Indoor indication
lamp flashes.
Which lamp
does flash?
Item
A
B
C
D
E
Check
code
Block display
Description for self-diagnosis
F
Release status display
OPERATION
TIMER
Normal
Normal
Flash 1 Hz
None
Flash 2 Hz
2 times
every 1 sec.
None
None
Flash 1 Hz TC release
TD release
Current release
Nothing
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