Indoor Unit - Mitsubishi Electric PURY-P72 Service Handbook

[ IX Troubleshooting ]
[TJMU-A]
2) PURY-P96, P120, P144TJMU-A
Noise filter
TB1
AC 208 / 230 V
Fuse
Terminal block for
power source
Surge protection
Control board
72C
Solenoid valve
4-way valve
CH11
LEV
12V Power supply
TB7
Terminal block for
transmission line
for centralized control
(DC 24 ~ 30 V)
TB3
Indoor/outdoor
transmission block
(DC 24 ~ 30 V)
TB2
AC Power source
AC 208 / 230 V
Terminal block for
power source
TB15
Terminal block
for MA remote
TB5
controller
To next unit

(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.)
HWE09130
72C
Noise filter Rectifier
Fuse
Inverter reset
circuit
Microcomputer 18 V Power supply
Relay, LEV
Drive circuit
5 V 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
DCL Smoothing capacitor
INV board
15V Power supply
Fuse
DC / DC
converter
12 V Power supply
Fan board
Fuse
63H1
5 V Power supply
Fuse
Relay drive circuit
DC / DC
converter
30 V Power supply
Relay
- 328 -
Power source system (AC 208 / 230 V)
Control system (DC 5 ~ 30 V)
Compressor
Inverter
Inverter drive
circuit
Microcomputer
5 V Power supply
Heat
Inverter
exchanger
fan
Inverter drive
circuit
Microcomputer
GB