Daikin RMXS-L Series, Руководство по обслуживанию

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Troubleshooting for CTXS, FTXS, CDXS, FDXS Series SiUS181305E
165 Troubleshooting
4.5 Check for CTXS, FTXS, CDXS, FDXS Series
4.5.1 Thermistor Resistance Check
Check No.01
Disconnect the connectors of the thermistors from the PCB, and measure the resistance of each
thermistor using tester.
The data is for reference purpose only.

When the room temperature thermistor is directly mounted on a PCB, remove the PCB from the
control PCB to measure the resistance.

When the connector of indoor heat exchanger thermistor is soldered on a PCB, remove the
thermistor and measure the resistance.
Temperature (°C / °F) Resistance (k

)
–20 / –4 197.8
–15 / 5 148.2
–10 / 14 112.1
–5 / 23 85.60
0 / 32 65.93
5 / 41 51.14
10 / 50 39.99
15 / 59 31.52
20 / 68 25.02
25 / 77 20.00
30 / 86 16.10
35 / 95 13.04
40 / 104 10.62
45 / 113 8.707
50 / 122 7.176
(R25°C (77°F) = 20 k

, B = 3950 K)
(k
Ω
)
150
100
50
–15 0 15 30 45
(R14467)
5 32 59 86 113
(˚C)
(˚F)
Tester
Resistance range
(R11906)
Tester
(R17417)
Room temperature
thermistor