Hitachi RAS-(4-12)HNP(1)(E) - Thermistor for Evaporating Temperature of Outdoor Unit in Heating Operation (for Defrosting) (THM8); Thermistor for Condensing Temperature of RAS-4 H(V)RNS3 E Outdoor Unit (THM10); Thermistor for Inverter Fin Temperature (THMI)

11 Electrical checks of
main parts
461
SMGB0087 rev.0 - 12/2013
11
Thermistor for evaporating temperature of outdoor unit in heating operation (for defrosting) (THM8)
80
70
60
50
40
30
20
10
0
-15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60
26.0
20.2
15.9
12.6
10.0
8.05
5.31
3.60
2.49
33.7
44.0
58.3
78.0
6.52
4.36
2.99
Thermistor resistance characteristics
Temperature (ºC)
Thermistor resistance (kΩ)
Thermistor for condensing temperature of RAS-4H(V)RNS3E outdoor unit (THM10)
80
70
60
50
40
30
20
10
0
-15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60
26.0
20.2
15.9
12.6
10.0
8.05
5.31
3.60
2.49
33.7
44.0
58.3
78.0
6.52
4.36
2.99
Thermistor resistance characteristics
Temperature (ºC)
Thermistor resistance (kΩ)
Thermistor for inverter n temperature (THMI)
38.6
22.7
13.9
8.8
5.8
3.9
2.7
1.9
1.4
Thermistor resistance (kΩ)
Ambient temperature (ºC)
Thermistor characteristics