Kia Soul EV: Heat Pump / Refrigerant Temperature Sensor Repair procedures

Kia Soul EV (PS EV) 2015-2020 Service Manual / Heating,Ventilation, Air Conditioning / Heat Pump / Refrigerant Temperature Sensor Repair procedures

Inspection

1. Vcc
2. Ground

Check the voltage between terminals 6 and 7.
1.
Using the tester, check the resistance between terminals 1 and 2.
Temperature
Resistance
°C
°F
Specification  [K?]
Tolerance [%]
-40
-40
225.1
± 3.06
-30
-22
129.3
± 2.49
-20
-4
76.96
± 1.95
-10
14
47.34
± 1.46
0
32
30
± 1.00
10
50
19.53
± 1.43
20
68
13.03
± 1.82
30
86
8.896
± 2.19
40
104
6.201
± 2.54
50
122
4.406
± 2.86
60
140
3.186
± 3.16
70
158
2.343
± 3.44
80
176
1.749
± 3.71
90
194
1.325
± 3.96
100
212
1.017
± 4.20
110
230
0.789
± 4.42
120
248
0.62
± 4.63

Replacement
[Refrigerant Temperature Sensor #1]
1.
Recover the refrigerant with a recovery/ recycling/ charging station.
   
Do not use the same A/C recovery / charging station as conventional belt-driven compressors.
Since the electric compressor uses high-voltage, POE oil with high resistivity should be used.
If PAG oil mixes into the POE oil of the system, dielectric breakdown may occur due to decreased volumetric resistivity and the A/C compressor may not work.
2.
Seperate the charge door handle (A).

3.
Loosen the clips and bolts on the front bumper upper cover.

4.
Lift the front bumper uppser cover (A) slightly.
5.
Remove the front bumper upper cover (A) after loosening the mounting screw (B) on the side.

6.
Remove the refrigerant temperature sensor #1 (B) after disconnecting the refrigerant temperature sensor #1 connector (A).

7.
Install in the reverse order of removal.
   
Do not use the same A/C recovery / charging station as conventional belt-driven compressors.
Since the electric compressor uses high-voltage, POE oil with high resistivity should be used.
If PAG oil mixes into the POE oil of the system, dielectric breakdown may occur due to decreased volumetric resistivity and the A/C compressor may not work.
[Refrigerant Temperature Sensor #2]
1.
Recover the refrigerant with a recovery/ recycling/ charging station.
   
Do not use the same A/C recovery / charging station as conventional belt-driven compressors.
Since the electric compressor uses high-voltage, POE oil with high resistivity should be used.
If PAG oil mixes into the POE oil of the system, dielectric breakdown may occur due to decreased volumetric resistivity and the A/C compressor may not work.
2.
Remove the refrigerant temperature sensor #2 (B) after disconnecting the refrigerant temperature sensor #2 connector (A).

3.
Install in the reverse order of removal.
   
Do not use the same A/C recovery / charging station as conventional belt-driven compressors.
Since the electric compressor uses high-voltage, POE oil with high resistivity should be used.
If PAG oil mixes into the POE oil of the system, dielectric breakdown may occur due to decreased volumetric resistivity and the A/C compressor may not work.
Refrigerant Temperature Sensor Description and Operation
Description Monitors refrigerant temperature in A/C duct and sends resistance data to A/C controller. (same as the thermistor) Temperature and resistance is inversely proportioned. ...

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