– 43 –
Item
A
B
C
D
E
11-3. Judgment by Flashing LED of Indoor Unit (Switch Panel)
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
Check code
—
Block display
OPERATION (Green)
Flashing display (1 Hz)
OPERATION (Green)
Flashing display (5 Hz)
OPERATION (Green)
TIMER (Yellow)
Flashing display (5 Hz)
OPERATION (Green)
CHECK (Red)
Flashing display (5 Hz)
OPERATION (Green)
TIMER (Yellow)
CHECK (Red)
Flashing display (5 Hz)
Description for self-diagnosis
Power failure (when power is ON)
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)
Indoor
indication
lamp flashes.
Which lamp
does flash?
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.
4. For judgment and measures of the outdoor units, refer to the service manual of the outdoor unit to be combined.
NOTE :
To check the indoor unit, remove both attached cap by finger of “CHECK” and “TIMER” lamps.
Fig. 11-3-1 Switch panel
2 2 0 V / 2 3 0 V
2 4 0 V
2 2 0 V
2 3 0 V
A
B
AUTO RESTART
OFF ON
TEMPORARY
COOL AUTO
VOLTAGE1
VOLTAGE2
REMOCON
“TIMER” Lamp (Yellow)
“CHECK” Lamp (Red)
“OPERATION” Lamp (Green)
