Mitsubishi Electric PCA-RP71GA Manuel de service Page 63

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0
10
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30
40
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-20 -10 0 10 20 30 40 50
< Thermistor for lower temperature >
Temperature (:)
Resistance (K")
<Thermistor Characteristic graph>
Room temperature thermistor(TH1)
Pipe temperature thermistor(TH2)
Condenser/evaporator temperature
thermistor(TH5)
Thermistor R0=15k ±3%
Fixed number of B=3480K ± 2%
Rt=15exp { 3480( ) }
0: 15k
10: 9.6k
20: 6.3k
25: 5.4k
30: 4.3k
40: 3.0k
Thermistor for
lower temperature
1
273+t
1
273
9-6.TEST POINT DIAGRAM
9-6-1. Power board
PCA-RP2GA
PCA-RP2.5GA
PCA-RP3GA
PCA-RP4GA
PCA-RP5GA
PCA-RP6GA
CN2S
Connect to the indoor controller
board (CN2D)
(12~16V DC)
CN02
Connect to the indoor
controller board (CN03)
Between 1 and 2 0~24V DC
(Indoor/Outdoor transmission)
Between 2 and 3 220~240V AC
CN01
Connect to the Terminal Block (TB4)
(Indoor/outdoor connecting line)
Between 1 and 2 220~240V AC
Between 2 and 3 0~24V DC
(Indoor/outdoor transmission)
Fuse 4A/250V
+
}
}
+
}
+
OC311--3.qxp 04.5.31 1:05 PM Page 63
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