Thermistor - Mitsubishi Electric PAA-A18AA1 Service Manual

11.7. Thermistor

Chart 1: TH1 Thermistor
<Thermistor Characteristic graph>
Room temperature thermistor (TH1)
Thermistor for
lower temperature
Thermistor R = 15 k" ± 3%
0
Fixed number of B = 3480 k" ± 2%
1
Rt = 15exp { 3480(
273+t
0°C (32°F) 15 k"
10°C (50°F) 9.6 k"
20°C (68°F) 6.3 k"
25°C (77°F) 5.2 k"
30°C (86°F) 4.3 k"
40°C (104°F) 3.0 k"
Chart 2: TH2 and TH5 Thermistor
<Thermistor Characteristic graph>
Pipe temperature thermistor (TH2)
Thermistor for
Condenser/evaporator temperature
lower temperature
thermistor (TH5)
= 65.8 k" ± 3%
Thermistor R
0
65.8 k"
0°C (32°F)
40.1 k"
10°C (50°F)
25.2 k"
20°C (68°F)
20.2 k"
25°C (77°F)
16.2 k"
30°C (86°F)
10.7 k"
40°C (104°F)
Specifications are subject to change without notice.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1
1
) }
273
53
< Thermistor for lower temperature >
50
40
30
20
10
0
(˚C)
-20 -10 0 10 20 30 40 50
˚F
-4 14 32 50 68 86 104 122
Temperature
© 2022 Mitsubishi Electric US, Inc.
(˚C)
(˚F)