Daikin FTKS20DVMW(L), Руководство по обслуживанию

Страница: 155 / 228

Check SiENBE04-507A
146 Service Diagnosis
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=20k
Ω
B=3950
Temperature (°C)
–20
211.0 (k
Ω
)
–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=20k
⍀
, B=3950)
(k
⍀
)
(°C)