20
TEST POINT DIAGRAM AND VOLTAGE
MUX-A22WV -
Outdoor control P.C. board
E1
Fuse 250V AC
3.15A
Terminal 4 of
X522
}
12V DC
+
To fan
capacitor
C61
Surge absorber
NR61
Power supply
input
230V AC 50Hz
Terminal 3 of
X522
Terminal 3 of
X521
Terminal 4 of
X521
To fan motor
To fan
capacitor
C61
To solenoid coil
21RB
230V AC 50Hz
To indoor unit C
Solenoid coil 21R4
230V AC 50Hz
To indoor unit B
Solenoid coil 21R3
230V AC 50Hz
BLK WHT
JP20 DC12V
JP19 GND
From
indoor unit A
12V DC
1
+,
3
-
From
indoor unit C
12V DC
1
+,
3
-
From
indoor unit B
12V DC
1
+,
3
-
230V AC 50Hz
OB318--1.qxp 03.10.30 0:55 PM Page 20
