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29
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300
400
200
100
0
30
40
20
10
0
---50
050
Temperature [T](°C)
T < 0°C
T > 0°C
Is the outdoor
air temperature thermistor
connector connection
OK?
Repair
NO
NO
YES
YES
Is the outdoor
air temperature thermistor
characteristics OK, is there
no broken wire?
Defective outdoor air
temperature thermistor
Replacement
Defective outdoor unit control PCB
Replacement (Defective outdoor air
temperature thermistor input circuit)
Temperature-resistance
characteristics of outdoor air
temperature thermistor (ThO-A)
Thermistor resistance
(kΩ)[T<0°C]
Thermistor resistance
(kΩ)[T>0°C]
● Display conditions
If the temperature sensed by the thermistor is –30ºC or lower continu-
ously for 5 seconds between 2 minutes and 2 minutes 20 seconds after
the compressor goes ON, the compressor stops. After a 3 minute delay,
the compressor restarts. If this state is detected 3 times in 40 (60) min-
utes.
9
[Defective discharge pipe thermistor]
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
1 time flash
Keeps flashing
Outdoor unit
Temperature [T] (°C)
T
<
80°C
T
>
80°C
100
50
0
10
5
0
05020 80 100 120
Is the discharge
pipe thermistor
connector connection
OK?
NO
YES
Repair
Are the discharge
pipe thermistor characteristics
OK, is there no
broken wire?
Defective discharge pipe
thermistor Replacement
NO
YES
Defective outdoor unit control
PCB Replacement (Defective
discharge pipe thermistor
input circuit)
Temperature-resistance
characteristics of discharge
pipe thermistor (Th
O-
D)
Thermistor resistance
(kΩ)
[T
<
80°C]
Thermistor resistance
(kΩ)
[T
>
80°C]
Error display :
e39
● Display conditions
If the temperature sensed by the thermistor is –10ºC or lower con-
tinuously for 5 seconds between 10 minutes and 10 minutes 20
seconds (2minutes and 2minutes 20seconds) after the compressor
goes ON, the compressor stops. After a 3 minute delay, the com-
pressor restarts. If this state is detected 3 times in 40 (60) minutes.
8
[Defective outdoor air temperature thermistor]
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
1 time flash
Keeps flashing
Outdoor unit
Error display :
e38
Note (1) Values in ( ) show for the case of the 301~601 models.
Note (1) Values in ( ) show for the case of the 301~601 models.
Note (1) The green LED in the outdoor unit is used in the FDCA301 ~ 601 models only.
Note (1) The green LED in the outdoor unit is used in the FDCA301 ~ 601 models only.