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SERVICE PARTS INFORMATION 24
Pressure Switch
Type of contact
C
H
Pressure
Characteristics of pressure switch
Contact : Short
Open
Contact : Open
Short
SERVICE PARTS INFORMATION 25
Thermistor
Check Point : Check Thermistor resistance value
Remove connector and check Thermistor resistance value.
Temperature
Temperature
[°F]
[°C]
- 4
- 20
14
- 10
23
- 5
32
0
41
5
50
10
59
15
68
20
77
25
86
30
104
40
122
50
140
60
158
70
176
80
194
90
212
100
230
110
248
120
Applicable
Thermistors
4.2 0.1MPa
(609 14.5 psi)
3.2 0.15MPa
(464 21.8 psi)
Resistance Value [ k ]
Thermistor A
Thermistor B
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---
---
27.8
---
21.0
168.6
16.1
129.8
12.4
100.9
9.6
79.1
7.6
62.6
6.0
49.8
4.8
40.0
3.8
26.3
2.5
17.8
1.7
12.3
1.2
---
8.7
6.3
---
4.6
---
3.4
---
2.6
---
2.0
---
Discharge temp. TH1
Outdoor temp. TH
Suction temp. TH
Comp.1 temp. TH
Liquid temp. TH 1
Liquid temp. TH 2
Sub-cool heat- ex (outlet) TH
Heat- ex 1 gas TH
Heat- ex 2 gas TH
Heat- ex 1 liquid TH
Heat- ex 2 liquid TH
Thermistor C
Thermistor D
105.4
58.2
44.0
33.6
25.9
20.2
15.8
12.5
10.0
8.0
5.3
3.6
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Outdoor temp. TH
Heat sink temp. TH
04-117
---
27.4
20.7
15.8
12.2
9.5
7.5
5.9
4.7
3.8
2.5
1.7
1.2
0.8
0.6
0.4
0.3
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Troubleshooting
