Check
SiUS092230EA
190
Part 6 Service Diagnosis
Note(s)
8. Check
8.1 Thermistor Resistance Check
Check No.01
Measure the resistance of each thermistor using multimeter.
The resistance values are defined by below table.
If the measured resistance value does not match the listed value, the thermistor must be replaced.
Disconnect the connector of thermistor ASSY from the PCB to measure the resistance between
the pins using multimeter.
To check the thermistor soldered on a PCB, disconnect the PCB from other PCB/parts, and
measure the resistance between the both ends of soldered thermistor.
R6000517
When replacing the defective thermistor(s), replace the thermistor as ASSY.
Multimeter
Resistance range
Thermistor ASSY
Soldered thermistor
Multimeter
Thermistor temperature
Type A
(°C)
(°F)
R (25°C (77°F)) = 20 k
Ω
B = 3950 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
(k
Ω
)
150
100
50
–15
0
15
30
45
(R14467)
5
32
59
86
113
(°C)
(°F)
Summary of Contents for RX-W Series
Page 1: ... Applied Models Inverter Pair Heat Pump Service Manual SiUS092230EA Inverter Pair RX W Series ...
Page 207: ...SiUS092230EA Check Part 6 Service Diagnosis 201 15 18 24 class R25105 1 2 3 4 Multimeter ...
Page 209: ...SiUS092230EA Check Part 6 Service Diagnosis 203 15 18 24 class R20704 W V U DC_P1 DC_N1 ...
Page 239: ...SiUS092230EA Piping Diagrams Part 8 Appendix 233 RX24WMVJU9 3D141502 ...