Fujitsu Comfort Series Service Manual page 55
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Also See for Comfort Series:
- Design & technical manual (137 pages) ,
- Service manual (68 pages)
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SERVICE PARTS INFORMATION 6
Pressure Sensor
1. Discharge Pressure Sensor
Check Point : Check Voltage from Main PCB
With the connector connected to the PCB, measure the voltage between P21:3-4
of the Main PCB.
Characteristics of pressure sensor
4.5
0.5
0
Pressure psi / MPa
psi
0.0
MPa
0.00
Output (V)
0.50
psi
319.0 348.0 377.0 406.0 435.0 464.0 493.0 522.0 551.0 580.0 609.0 638.0 667.0 696.0 725.0
2.20
MPa
Output (V)
2.26
2. Suction Pressure Sensor
Check Point : Check Voltage from Main PCB
With the connector connected to the PCB, measure the voltage between P21:3-4
of the Main PCB.
Characteristics of pressure sensor
3.5
0.5
0
Pressure psi / MPa
psi
0.0
0.00
MPa
0.50
Output
(V)
psi
232.0 246.5
Mpa
1.60
Output (V)
3.32
725 / 5.0
14.5
29.0
43.5
58.0
0.10
0.20
0.30
0.40
0.58
0.66
0.74
0.82
2.40
2.60
2.80
3.00
2.42
2.58
2.74
2.90
246.5 / 1.7
14.5
29.0
43.5
58.0
0.10
0.20
0.30
0.40
0.68
0.85
1.03
1.21
1.70
3.50
P21
1 1
3 3
4 4
72.5
101.5 116.0 130.5 145.0 174.0 203.0 232.0 261.0 290.0
0.50 0.70
0.80
0.90
0.90
1.06
1.14
1.22
3.20
3.40
3.60
3.80
3.06
3.22
3.38
3.54
P21
1 1
3 3
4 4
72.5
101.5 116.0 130.5 145.0 159.5 174.0 188.5 203.0 217.5
0.50
0.70
0.80
0.90
1.38
1.74
1.91
2.09
03-30
RED
PRESSURE
WHITE
PS
SENSOR
BLACK
(HIGH)
1.00
1.20
1.40
1.60
1.30
1.46
1.62
1.78
4.00
4.20
4.40
4.60
3.70
3.86
4.02
4.18
RED
PRESSURE
WHITE
PS
SENSOR
BLACK
(LOW)
1.00
1.10
1.20
1.30
2.27
2.44
2.62
2.79
DC
1.80
2.00
1.94
2.10
4.80
5.00
4.34
4.50
DC
1.40
1.50
2.97
3.15
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Troubleshooting
