SiUS181631EA Thermistor Resistance/Temperature Characteristics
Troubleshooting 267
8. Thermistor Resistance/Temperature
Characteristics
Table 1
Applicable
thermistor
Indoor unit
R2T: Indoor heat exchanger
1 (liquid pipe)
R3T: Indoor heat exchanger
2
Outdoor unit
R3T: Suction pipe 1
R4T: Outdoor heat
exchanger
R5T: Suction pipe 2
R6T: Subcooling heat
exchanger gas pipe
R7T: Liquid pipe
Indoor unit
R1T: Room temperature
Outdoor unit
R1T: Outdoor temperature
BP unit
DGA - DGC: Gas pipe
DLA - DLC: Liquid pipe
Thermistor
temperature
°C (°F)
Resistance (k
Ω
) Resistance (k
Ω
) Resistance (k
Ω
) Resistance (k
Ω
)
–30 (–22) 363.8 361.7719 362.4862 363.3
–25 (–13) 266.8 265.4704 265.9943 266.6
–20 (–4) 197.8 196.9198 197.3083 197.8
–15 (5) 148.2 147.5687 147.8597 148.2
–10 (14) 112.0 111.6578 111.8780 112.1
–5 (23) 85.52 85.2610 85.4291 85.60
0 (32) 65.84 65.6705 65.8000 65.93
5 (41) 51.05 50.9947 51.0954 51.14
10 (50) 39.91 39.9149 39.9938 39.99
15 (59) 31.44 31.4796 31.5417 31.52
20 (68) 24.95 25.0060 25.0554 25.02
25 (77) 19.94 20.0000 20.0395 20.00
30 (86) 16.04 16.1008 16.1326 16.10
35 (95) 12.99 13.0426 13.0683 13.04
40 (104) 10.58 10.6281 10.6490 10.62
45 (113) 8.669 8.7097 8.7269 8.707
50 (122) 7.143 7.1764 7.1905 7.176
55 (131) 5.918 5.9407 5.9524 5.947
60 (140) 4.928 4.9439 4.9536 4.953
65 (149) 4.123 4.1352 4.1434 4.146
70 (158) 3.467 3.4757 3.4825 3.487
75 (167) – 2.9349 2.9407 2.946
80 (176) – 2.4894 2.4943 2.499
85 (185) – 2.1205 2.1247 2.130
90 (194) – 1.8138 1.8173 1.822
95 (203) – 1.5575 1.5605 1.565
100 (212) 1.339 1.3425 1.3451 1.349
105 (221) – 1.1614 1.1636 1.167
Drawing No.
3SA48002, 3SA48004
(AD94A045)
3SA48001
(AD87A001)
3PA50504
(AD87A001)
3P150006
(ED97B002, ED01B012)
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