Mitsubishi Electric PEAD-RP60GA Service Manual page 23

9-5. HOW TO CHECK THE PARTS
PEAD-RP60GA
PEAD-RP71GA
PEAD-RP100GA
Parts name
Room temperature Disconnect the connector then measure the resistance using a tester.
thermistor (TH1) (Surrounding temperature 10:~30:)
Pipe temperature
thermistor (TH2)
Condenser/Evaporator
temperature thermistor
(TH5)
Fan motor (MF) Measure the resistance between the terminals using a tester (winding temp. 20°C).
Protector RP60,71 RP100
OPEN 145±5°C 135±5°C
CLOSE 94±15°C 86±15°C
<Thermistor Characteristic graph>
Thermistor for
lower temperature
Thermistor R =15k" ± 3%
0
Fixed number of B=3480k" ± 2%
Rt=15exp { 3480(
273+t
0: 15k"
10: 9.6k"
20: 6.3k"
25: 5.2k"
30: 4.3k"
40: 3.0k"
Normal
4.3k"~9.6k" Open or short
Motor terminal
RP60, 71
Orange-Gray
35.0"
Orange-Black
10.3"
Black-Blue
5.87"
Blue-Yellow
6.97"
Yellow-Red
21.4"
Orange-Red -
Room temperature thermistor(TH1)
Pipe temperature thermistor(TH2)
Condenser/evaporator temperature
thermistor(TH5)
1 1
) }
273
Check points
Abnormal
(Refer to the thermistor)
Normal
RP100
35.2"
2.63"
3.00"
7.01"
-
50.7"
Abnormal
Open or short
< Thermistor for lower temperature >
5
4
3
2
1
-2 -1 1 2 3 4 5
Temperature ( )
:
23