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5. PLASMA operation failure mode table
POWER lamp
Abnormal point
(Failure mode)
Condition
Correspondence
1-time
fl
ash
PLASMA power
supply control
PLASMA power supply cannot be turned OFF
even if the PLASMA operation is turned OFF
with the remote controller.
Replace the indoor electronic control P.C. board.
2-time
fl
ash
Spark discharge
The voltage between CN1 (+) and (GND)
on the PLASMA POWER P.C. board falls below
1.6 V (spark discharge judgment voltage).
Refer to 10-6. "Check of PLASMA operation".
3-time
fl
ash
Abnormal electric
discharge error 1
The voltage between CN1 (+) and (GND)
on the PLASMA POWER P.C. board falls by
0.9 V below the normal voltage value (3 V).
4-time
fl
ash
Abnormal electric
discharge error 2
The voltage between CN1 (+) and (GND)
on the PLASMA POWER P.C. board falls
signi
fi
cantly. (0.4 V / 0.5 ms)
5-time
fl
ash
PLASMA
DEODORIZING
The voltage between CN1 (+) and (GND)
on the PLASMA POWER P.C board rises
above the normal voltage value (3 V).
NOTE 1
: Blinking patterns of this mode differ from the ones of TROUBLESHOOTING CHECK TABLE (10-4.).
NOTE 2
: As soon as an abnormality is detected, PLASMA operation goes OFF, therefore measuring instrument which records
the voltage wave is required in order to perform the above mentioned voltage measurement.
NOTE 3
: When POWER lamp flashes 1-time or 2-time, please perform PLASMA operation check (Refer to 10-2.3).
4. Indoor unit failure mode table
POWER lamp
Abnormal point
(Failure mode)
Condition Correspondence
Not lighted
Normal
—
—
1-time
fl
ash every
0.5-second
Room temperature
thermistor
The room temperature thermistor short or
open circuit is detected every 8 seconds dur-
ing operation.
Refer to the characteristics of the room temperature
thermistor (10-7.).
2-time
fl
ash
2.5-second OFF
Indoor coil
thermistor
The indoor coil thermistor short or open circuit
is detected every 8 seconds during operation.
Refer to the characteristics of the main indoor coil ther-
mistor, the sub indoor coil thermistor (10-7.).
3-time
fl
ash
2.5-second OFF
Serial signal
The serial signal from outdoor unit is not re-
ceived for a maximum of 6 minutes.
Refer to 10-6. "How to check miswiring and serial
signal error".
11-time
fl
ash
2.5-second OFF
Indoor fan motor
The rotational frequency feedback signal is not
emitted during the 12 seconds the indoor fan
operation.
Refer to 10-6. "Check of indoor fan motor".
12-time
fl
ash
2.5-second OFF
Indoor control
system
It cannot properly read data in the nonvolatile
memory of the indoor electronic control P.C.
board.
Replace the indoor electronic control P.C. board.
NOTE
: Blinking patterns of this mode differ from the ones of TROUBLESHOOTING CHECK TABLE (10-4.).
