Bcontrol; Composition Of Control - Mitsubishi Electric PRH-P8MYA Technical & Service Manual

B CONTROL

[1] Composition of Control

1. Function block diagram
3N~
380/400/415 V
50 Hz
Unit
Fuse
Remote
controller
Fuse
Transformer
Fuse
DC5V for
microcomputer
Communication
circuit
DC/DC
converter
LED1
<Power>
Current
detection
LED2
<Supply power> <Indoor-side/outdoor-side controller boards communication>
Key input
DC5V LCD
Send/receive
Magnetic
contractor
Fuse
Semiconductor
relay
Fan control
12V
Communication
5V
circuit
LED3
- 40 -
✻1: For each refrigerant circuit
Over current Compressor
relay
4-way valve, LEV,
solenoid valve,
crankcase heater
Outdoor-side fan
Fan control Indoor-side fan