Thermistor Resistance Check - Daikin Altherma EKHBH Series Service Manual

ESIE06-03
5.5

Thermistor Resistance Check

Check No.06 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:
Part 3 – Troubleshooting
Hydro-box
3SA48002
R25°C=20kΩ
B=3990
-20 197.8 kΩ
-15 148.2 kΩ
-10 112.0 kΩ
-5 85.52 kΩ
0 65.84 kΩ
5 51.05 kΩ
10 39.91 kΩ
15 31.44 kΩ
20 24.95 kΩ
25 19.94 kΩ
30 16.04 kΩ
35 12.99 kΩ
40 10.58 kΩ
45 8.669 kΩ
50 7.143 kΩ
Additional Checks for Troubleshooting
Tank thermistor
3SA48009
R120=7.13Ω
B= 4177
2534 kΩ
1877 kΩ
1404 kΩ
1059 kΩ
806.5 kΩ
618.9 kΩ
478.8 kΩ
373.1 kΩ
292.9 kΩ
231.4 kΩ
184.1 kΩ
147.4 kΩ
118.7 kΩ
96.13 kΩ
78.29 kΩ
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4
5
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