16
4. Indoor unit failure mode table
5. PLASMA DEODORIZING/PLASMA AIR PURIFYING power failure mode table
5-time flash
When the voltage between CN1
3
(+)
and
2
(GND) on the PLASMA POWER P.C.
board (in the PLASMA DEODORIZING or
PLASMA AIR PURIFYING unit) rises above
the normal voltage value (3V).
4-time flash
PLASMA DEODORIZING/
PLASMA AIR PURIFYING
power
When the voltage between CN1
3
(+)
and
2
(GND) on the PLASMA POWER P.C.
board (in the PLASMA DEODORIZING or
PLASMA AIR PURIFYING unit) falls
significantly. (0.4V / 0.5ms)
3-time flash
Refer to 9-6.
F
"Check of PLASMA
DEODORIZING power" or 9-6.
G
"Check
of PLASMA AIR PURIFYING power".
Abnormal electric
discharge error 1
When the voltage between CN1
3
(+)
and
2
(GND) on the PLASMA POWER P.C.
board (in the PLASMA DEODORIZING or
PLASMA AIR PURIFYING unit) falls by 0.9V
below the normal voltage value (3V).
2-time flash
Spark discharge
1-time flash
PLASMA DEODORIZING/
PLASMA AIR PURIFYING
power control
When the voltage between CN1
3
(+)
and
2
(GND) on the PLASMA POWER P.C.
board (in the PLASMA DEODORIZING or
PLASMA AIR PURIFYING unit) falls below
1.6V(spark discharge judgment voltage).
When PLASMA DEODORIZING and/or
PLASMA AIR PURIFYING power cannot be
turned OFF even if the PLASMA operation is
turned OFF with the remote controller.
POWER lamp
Correspondence
Abnormal point
(Failure mode)
Condition
Abnormal electric
discharge error 2
NOTE : Blinking patterns of this mode differ from the ones of Troubleshooting check table (9-4.).
NOTE1 : Blinking patterns of this mode differ from the ones of Troubleshooting check table (9-4.).
NOTE2 : As soon as an abnormality is detected, PLASMA DEODORIZING power and/or PLASMA AIR PURIFYING
power goes OFF, therefore measuring instrument which records the voltage wave is required in order to
perform the above mentioned voltage measurement.
12-time flash
2.5-second OFF
Replace the indoor electronic control
P.C. board.
Indoor control system
When it cannot properly read data in the
nonvolatile memory of the indoor electronic
control P.C. board.
11-time flash
2.5-second OFF
Refer to 9-6.
A
"Check of indoor fan
motor".
Indoor fan motor
When the rotational frequency feedback
signal is not emitted during the 12-seconds
indoor fan operation.
2-time flash
2.5-second OFF
Refer to the characteristics of the main
indoor coil thermistor, the sub indoor coil
thermistor (9-7.).
Indoor coil thermistor
When the indoor coil thermistor short or
open circuit is detected every 8 seconds
during operation.
3-time flash
2.5-second OFF
Refer to 9-6.
D
"How to check mis-wiring
and serial signal error".
Serial signal
When the serial signal from the outdoor unit is
not received for a maximum of 6 minutes.
1-time flash
every 0.5-second
Refer to the characteristics of the room
temperature thermistor (9-7.).
Room temperature
thermistor
When the room temperature thermistor
short or open circuit is detected every 8
seconds during operation.
Not lighted
–
Normal
–
POWER lamp
Correspondence
Abnormal point
(Failure mode)
Condition
OB371B--1qxp 06.5.10 2:01 PM Page 16
