Appendix A - Daikin FTXN25L Service Manual

6.0 Appendix A

6.1 Thermistor resistance checking procedures
Remove the connectors of thermistors at PCB and measure resistance of each thermistor using tester as
shown below.
Resistance value refer to Resistance table below.
Indoor Wall Mounted
Outdoor Outdoor Split
Table 1: Resistance R25 = 20K ohm
Temperature (°C)
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
:
Resistance range
RXN/ARXN50/60L
RXB50/60A
10 kΩ (Table 2)
10 kΩ (Table 2)
Resistance value (kΩ)
211.0
150.0
116.5
88.0
67.2
51.9
40.0
31.8
25.0
20.0
16.0
13.0
10.6
8.7
7.2
Tester
RXN/ARXN25/35L
RXN/ARXN25/35/50/60M
RXN/ARXN25/35/50/60N
RXB50/60B
RXB/ARXB50/60C
RXC25/35/50/60C
10 kΩ (Table 2)
20 kΩ (Table 1)
Refrigerant Diagram
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