Mitsubishi P120 User Manual
[
IX Troubleshooting ]
- 272 -
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)
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)
transmission line
(Non-polar 2 wire)
AC 220 / 240 V
AC Power source
To next unit
(Indoor 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
power source
TB5
Terminal block
for MA remote
controller
for MA remote
controller
Terminal block
for transmission
line connection
DC 17 ~ 30 V
for transmission
line connection
DC 17 ~ 30 V
AC 460V
Terminal block for
power source
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
the power supply to
the transmission line
M-NET board
DC / DC
converter
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
circuit
Inverter drive
circuit
circuit
Inverter reset
circuit
circuit
Rectifier
Compressor
Heat
exchanger
fan
Relay, LEV
Drive circuit
Drive circuit
Solenoid valve
4-way valve
CH11
4-way valve
CH11
CN40
Terminal block for
transmission line
for centralized control
(DC 24 ~ 30 V)
transmission line
for centralized control
(DC 24 ~ 30 V)
TB7
Indoor/outdoor
transmission block
(DC 24 ~ 30 V)
transmission block
(DC 24 ~ 30 V)
TB3
Rectifier
Trans Box
ME remote
controller
MA remote
controller
Indoor unit
Oudoor unit
[YJMU-A]