–22–
7
7
7
7
7
CONTROL
[1] Composition of Control
1
Function block diagram
3N~
380/400/415 V
50 Hz
outdoor
indoor
Remote
controller
Fuse
Fuse
LED2
LED3
Fuse
DC5V for
microcomputer
DC/DC
converter
Fuse
Electr
ical
ter
minal b
loc
k
Remote controller
ter
minal b
loc
k
Remote controller
ter
minal b
loc
k
Semiconductor
relay
Semiconductor
relay
Over current
relay
Magnetic
contractor
4-way valve, LEV,
solenoid valve,
crankcase heater
Key input
LCD
Send/receive
Louver
Vane
Drain pump
Others
Communication
circuit
Communication
circuit
Transformer
Fan control
Fan control
Compressor
Outdoor fan
Indoor fan
Indoor/outdoor
connection ter
minal
b
loc
k
Indoor/outdoor
connection ter
minal
b
loc
k
Current
detection
<Supply power>
<Power>
<Indoor/outdoor units communication>
LED1
DC5V
12V
5V