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[ IX Troubleshooting ]
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HWE09120 GB
-7- Control Circuit (YJMU-A)
(1) Control power source function block
1) PUHY-P72, P96, P120, P144YJMU-A
Outdoor unit
Power source system (AC 230 / 460 V)
Control system (DC 5 ~ 30 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.)
A, B
A, B
M-NET
transmission line
(Non-polar 2 wire)
AC 220 / 240 V
AC Power source
To next unit
(Indoor unit)
MA remote controller wiring
(Non-polar 2 wire)
DC 17 ~ 30 V
DC 9 ~ 12 V
TB2
TB15
Terminal block for
power source
TB5
Terminal block
for MA remote
controller
Terminal block
for transmission
line connection
DC 17 ~ 30 V
AC 460V
Terminal block for
power source
TB1
Noise filter
Noise filter
Fuse
Fuse
Fuse
72C, LEV
Fuse
Surge protection
INV board
Control board
Fan board
63H1
72C
DCL
DC / DC converter
Detection circuit for
the power supply to
the transmission line
M-NET board
DC / DC
converter
Microcomputer
Microcomputer
Microcomputer
5 V Power supply
18 V Power supply
12V Power supply
30 V Power supply
Relay drive circuit
Relay
5 V Power supply
5 V Power supply
17V Power supply
Smoothing capacitor
Inverter
Inverter
Inverter drive
circuit
Inverter drive
circuit
Inverter reset
circuit
Rectifier
Compressor
Heat
exchanger
fan
Relay, LEV
Drive circuit
Solenoid valve
4-way valve
CH11
CN40
Terminal block for
transmission line
for centralized control
(DC 24 ~ 30 V)
TB7
Indoor/outdoor
transmission block
(DC 24 ~ 30 V)
TB3
Rectifier
Trans Box
ME remote
controller
MA remote
controller
Indoor unit
Oudoor unit
[YJMU-A]