Specifications

893
FDC-HKX
9
Error display :
e37
[Defective outdoor unit heat exchanger thermistor]
10
Error display :
e38
[Defective outdoor temperature thermistor]
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
1 time flash
Keeps flashing
Outdoor unit
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
1 time flash
Keeps flashing
Outdoor unit
Tem
p
erature
(
°C
)
15
10
5
010 304020 50
5kΩ at 25°C
Is the outdoor
unit heat exchanger
themistor connector
OK?
Repair
NO
YES
NO
YES
Are the outdoor
unit heat exchanger themistor
characteristics OK, is there
any broken wire?
Defective outdoor unit
heat exchanger thermistor
Replacement
Defective outdoor unit PCB
Replacement (Defective outdoor
unit heat exchanger themistor
input circuit)
Outdoor unit heat exchanger
themistor (Th
O-R ) Resistance
temperature characteristics
Resistance
(kΩ)
300
400
200
100
0
30
40
20
10
0
---50
050
Tem
p
erature [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
temperature thermistor
characteristics OK, is there
no broken wire?
Defective outdoor tempera-
ture thermistor
Replacement
Defective outdoor unit PCB
Replacement (Defective outdoor
temperature thermistor input
circuit)
Temperature-resistance
characteristics of outdoor
temperature thermistor (Th
O-A )
Thermistor resistance
(kΩ)[T<0°C]
Thermistor resistance
(kΩ)[T>0°C]