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TEST POINT DIAGRAM AND VOLTAGE
MS12NN, MS15NN, MS17NN
Indoor electronic control P.C. board
Fuse AC250V 3.0A
Power supply input AC115V
+
--
}
DC5V
Indoor coil thermistor (RT12)
Time short mode point
Room temperaure thermistor (RT11)
DC12V
32
F
50 68 86 104 122 140
}
Room temperature thermistor (RT11)
Indoor coil thermistor (RT12)
Varistor(NR11)
CN201
+
--
}
8 7 5 6 4 3 2 1
Me Lo Hi
Fan motor power supply
}
JP7
JP9
JP24
JP11
CN112
JPG
JPS
CN111
OB192--2.qxp 23/6/97 11:52 PM Page 38