Primary Judgment; Judgment By Flashing Led Of Indoor Unit - Toshiba RAS-M13PKVP-E Service Manual

11-2. Primary Judgment

To diagnose the troubles, use the following methods.
1) Judgment by fl ashing 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.
For any trouble occurred at the outdoor unit side, detailed diagnosis is possible by 5 serial LED (Red) on the
control P.C. board.

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.
Indoor indication
lamp flashes.
Which lamp
does flash?
NOTE:
• The contents of items B and C and a part of item E are displayed when air conditioner operates.
• 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.
• The check codes can be confi rmed on the remote controller for servicing.
Table 11-3-1
Item Check code
OPERATION (Green)
A
—
Flashing display (1 Hz)
OPERATION (Green)
B
Flashing display (5 Hz)
OPERATION (Green)
C
TIMER (Orange)
Flashing display (5 Hz)
OPERATION (Green)
D
Flashing display (5 Hz)
OPERATION (Green)
E
TIMER (Orange)
Flashing display (5 Hz)
Block display
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)
– 75 –
Description for self-diagnosis