18
TEST POINT DIAGRAM AND VOLTAGE
MSZ-A18YV -
MSZ-A24YV -
MSZ-A26YV -
Indoor electronic control P.C. board
E1
E1
E1
Fan motor power supply
(CN211)
Fuse (F11)
250 VAC 3.15A
}
Power supply input
230 VAC
+
}
5 VDC
Timer short mode point
(JPS, JPG)
(Refer to 7-1.)
Emergency operation
switch
+
}
12 VDC
Indoor coil thermistor(RT12(main), RT13(sub))
Room temperature thermistor (RT11)
R
e
s
is
ta
n
c
e
(k
"
)
Room temperature ther-
mistor(RT11)
To disable “Auto restart function”,
solder jumper wire to JR07.
(Refer to 7-3.)
Indoor coil
thermistor(RT13(sub))
R132
Receiver P.C. board
Indoor coil
thermistor(RT12(main))
w
There are 2 types of electronic control P.C. boards
(TYPE1/TYPE2).
They are both compatible with MSZ-A18/24/26YV.
TYPE 1
CN121
Vane motor
power supply
(CN151)
OB345A
