Table of Contents
[ X Troubleshooting ]
-7- Control Circuit
(1) Control power source function block
Noise filter
TB1
AC 380/ 415V
Terminal block for
power source
Surge protection
Control board
Solenoid valve
4-way valve
CH11
72C, LEV
TB7
Terminal block for
transmission line
for centralized control
(DC 24 ~ 30 V)
TB3
Indoor/outdoor
transmission block
(DC 24 ~ 30 V)
M-NET
transmission line
(Non-polar 2 wire)
TB2
AC Power source
AC 220 / 240 V
Terminal block for
power source
TB15
Terminal block
for MA remote
TB5
To next unit
controller
(Indoor unit)
Terminal block
for transmission
line connection
DC 17 ~ 30 V
A, B
DC 17 ~ 30 V
A, B
DC 9 ~ 12 V
* MA remote controllers and ME remote controllers cannot be used together.
(Both the ME and MA remote controller can be connected to a system with a system controller.)
HWE10190
INV board
Noise filter
Rectifier
Fuse
Fuse
17V Power supply
Rectifier
Fuse
Inverter reset
circuit
Microcomputer
18 V Power supply
Relay, LEV
Drive circuit
5 V Power supply
12V Power supply
DC / DC converter
M-NET board
Detection circuit for
the power supply to
the transmission line
CN40
Indoor unit
ME remote
controller
MA remote
controller
Power source system (AC 380 / 415 V)
Control system (DC 5 ~ 30 V)
Smoothing capacitor
Inverter
DCL
72C
Inverter drive
circuit
5 V Power supply
Microcomputer
Fan board
Fuse
63H1
5 V Power supply
Relay drive circuit
DC / DC
converter
30 V Power supply
Relay
- 209 -
Compressor
Heat
Inverter
exchanger
fan
Inverter drive
circuit
Microcomputer
GB
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