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10-7. TEST POINT DIAGRAM AND VOLTAGE
1. Indoor electronic control P.C. board, indoor power P.C. board, receiver P.C. board and display P.C. board
MSZ-EF18VGW-
MSZ-EF22VGW-
E1
MSZ-EF18VGB-
MSZ-EF22VGB-
E1
MSZ-EF18VGS-
MSZ-EF22VGS-
E1
Indoor power P.C. board
Connector to terminal
block (CN201)
Connector to indoor
electronic control P.C.
board (CN202)
Indoor electronic
control P.C. board
Receiver P.C. board
Vane motor
(CN151)
Display P.C. board
Room temperature ther-
mistor RT11 (CN111)
Indoor coil ther-
Switch P.C. board
mistor RT12,
RT13 (CN112)
,
MSZ-EF25VGW-
,
E1
E1
ET1
,
MSZ-EF25VGB-
,
E1
E1
ET1
,
MSZ-EF25VGS-
,
E1
ET1
E1
GND
Timer short mode
point JPG JPS (Refer
to 8-1.)
Emergency operation
switch (E.O.SW) (SW1)
MSZ-EF35VGW-
,
E1
ET1
ET1
MSZ-EF35VGB-
,
E1
ET1
ET1
MSZ-EF35VGS-
,
ET1
E1
ET1
Fuse (F11)
Connector to power
P.C. board (CN102)
12 V DC
5 V DC
To disable "Auto restart function",
cut the Jumper wire to JR77.
(Refer to 8-3.)
42
MSZ-EF42VGW-
,
MSZ-EF50VGW-
E1
ET1
MSZ-EF42VGB-
,
MSZ-EF50VGB-
E1
ET1
MSZ-EF42VGS-
,
MSZ-EF50VGS-
E1
ET1
Varistor (NR11)
Indoor fan motor
(CN211)
325 V DC
(–) GND (high-
voltage DC)
15 V DC
(+)3-6 V DC
(+)0 or 15 V DC
Reactor (L111)
Room temperature thermistor (RT11)
Indoor coil thermistor (RT12, RT13)
Temperature (°C)
,
E1
ET1
,
E1
ET1
,
E1
ET1
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