Daikin SiEN04-306D - Thermistor Resistance Check

SiEN04-306D Check
Service Diagnosis 141
5.1.4 Thermistor Resistance Check
Check No.6 Remove the connectors of the thermistors on the PCB, and measure the resistance of each
thermistor using tester.
The relationship between normal temperature and resistance is shown in the graph and the
table below.
Thermistor R25°C=20kΩ B=3950
Temperature (°C)
–20 211.0 (kΩ)
–15 150
–10 116.5
–5 88
0 67.2
5 51.9
10 40
15 31.8
20 25
25 20
30 16
35 13
40 10.6
45 8.7
50 7.2
Tester
Resistance range
(R25=20kΩ, B=3950)
(kΩ)
100
50
-15
015
30
45
(C)
(1437)
150