Mitsubishi PUMY-P60NKMU - How to Check the Components

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8-8. HOW TO CHECK THE COMPONENTS
<Thermistor feature chart>
Low temperature thermistors
• Thermistor <HIC pipe> (TH2)
• Thermistor <Outdoor pipe> (TH3)
• Thermistor <Low pressure saturated temperature> (TH6)
• Thermistor <Outdoor> (TH7)
0°C [32°F] 15k'
10°C [50°F] 9.6k'
20°C [68°F] 6.3k'
25°C [77°F] 5.2k'
30°C [86°F] 4.3k'
40°C [104°F] 3.0k'
Thermistor R0 = 15k' ± 3%
B constant = 3480 ± 2%
R
t =15exp{3480(
273+t
–
273
)}
1
1
Thermistor R120 = 7.465k' ± 2%
B constant = 4057 ± 2%
Rt =7.465exp{4057(
273+t
–
393
)}
1
1
20°C [68°F] 250k'
30°C [86°F] 160k'
40°C [104°F] 104k'
50°C [122°F] 70k'
60°C [140°F] 48k'
70°C [158°F] 34k'
80°C [176°F] 24k'
90°C [194°F] 17.5k'
100°C [212°F] 13.0k'
110°C [230°F] 9.8k'
High temperature thermistor
• Thermistor <Compressor> (TH4)
0
10
20
30
40
50
-20-100 1020304050
Temperature
Resistance (k)
()
-4 -14 32 50 68 86 104 122
(°F)
500
400
300
200
100
0
25
50 75 100 120
Resistance (k)
(°C)
77 112 167 212 248 (°F)
0.5
2.5 5
2.5
4.5
Vout (V)
PRESSURE
(MPa)
3
2
1
WHT
BLU
BLK
SENSOR
5V DC
GND
63HS
Vout
MICRO
PROCESSOR
MULTI
CONTROLLER BOARD
- : 5V (DC)
- : Output Vout (DC)
<HIGH PRESSURE SENSOR>
0.5
0.85 1.7
2.5
3.5
Vout (V)
PRESSURE
(MPa)
3
2
1
RED
WHT
BLK
SENSOR
5V DC
GND
63LS
Vout
MICRO
PROCESSOR
MULTI
CONTROLLER BOARD
- : 5V (DC)
- : Output Vout (DC)
<LOW PRESSURE SENSOR>
t : °C = (°F-32)/1.8
t : °C = (°F-32)/1.8
OCH502C