Thermistor Resistance Check - Daikin CTXU25G2V1B Service Manual

Check
3.2

Thermistor Resistance Check

Check No.02 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.
169
Temperature (°C)
–20
–15
–10
–5
0
5
10
15
20
25
30
35
40
45
50
For the models in which the thermistor is directly mounted on the PCB.
Thermistor R25°C=20kΩ B=3950
211.0 (kΩ)
150
116.5
88
67.2
51.9
40
31.8
25
20
16
13
10.6
8.7
7.2
( R25=20kΩ, B=3950 )
(kΩ)
150
100
50
–15 0 15 30
RTH1
Tester
(R3460)
SiBE12-908
Tester
Resistance range
45
(°C )
Service Diagnosis