Pressure Switch; Thermistor - Fujitsu Airstage VR-II Series Service Manual

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
--- ---
--- 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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