Mitsubishi Electric PCA-RP50GA Service Manual page 30

<Thermistor Characteristic graph>
Thermistor for
lower temperature
Thermistor R =15k
0
Fixed number of B=3480 ± 2%
Rt=15exp { 3480(
273+t
0: 15k
10: 9.6k
20: 6.3k
25: 5.4k
30: 4.3k
40: 3.0k
10-6.TEST POINT DIAGRAM
10-6-1. Power board
PCA-RP50GA PCA-RP50GA#1
PCA-RP60GA PCA-RP60GA#1
PCA-RP71GA PCA-RP71GA#1
PCA-RP100GA PCA-RP100GA#1
PCA-RP125GA PCA-RP125GA#1
PCA-RP140GA PCA-RP140GA#1
Downloaded from AC-Manual.com Manuals
Room temperature thermistor(TH1)
Pipe temperature thermistor(TH2)
Condenser/evaporator temperature
thermistor(TH5)
± 3%
1
1
) }
273
PCA-RP50GAH
PCA-RP60GAH
PCA-RP71GAH
PCA-RP100GAH
PCA-RP125GAH
PCA-RP140GAH
< Thermistor for lower temperature >
50
40
30
20
10
0
-20 -10 0
Temperature ( )
PCA-RP50GA2
CN2S
Connect to the indoor controller board (CN2D)
Between 1 to 3 12.6-13.7V DC (Pin1 (+))
CNSK
Connect to the indoor controller board
(CNDK)
Between 1 to 3 220-240V AC
30
10 20 30 40 50
PCA-RP50GA2#1