IVT AY-XP12FR-N Service Manual page 26

AYXP12FRN
2. Outdoor unit thermistor temperature characteristics
Resistance
Connector
CN8
1
+
-
500K
Tester
400K
(K )
300K
Resistance at 25
52.76 k
200K
5.8K 3.06K
4.17K 2.28K
100K
0
-20 0 20 60 80 100
Temperature( )
TH1 Compressor thermistor
Thermistor No.
Compressor thermistor TH1
Heat exchanger thermistor TH2
Outdoor air temperature thermistor TH3
Suction thermistor TH4
2-way valve thermistor TH5
Connector
CN8
10 1
40K
Tester
Resistance at 0
Resistance
(In case of TH2 heat exchanger thermistor)
30K 14.57 k
(K )
Resistance at 25
4.431 k
20K
TH2 TH5
10K
1.72K
0
120 -20 0 20 40 60
Temperature(
TH2 Heat exchanger thermistor
TH3 Outdoor air temperature thermistor
TH4 Suction thermistor
TH5 2-way valve thermistor
Connector Color
Before measuring resistance,
No. (1) - No. (2) Red
disconnect connectors from PWB.
No. (3) - No. (4) Orange
No. (5) - No. (6) Green
No. (7) - No. (8) Black
No. (9) - No. (10) Yellow
3 – 6
10
+
-
)