Mitsubishi PUHY-EP250 - 8-10 Control Circuit; Control Power Supply Function Block

[8-10 Control Circuit ]
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HWE12050 GB
8 Troubleshooting Based on Observed Symptoms
8-10 Control Circuit
8-10-1 Control Power Supply Function Block
1) PUHY-EP200, EP250YKM-A
Outdoor unit
Power source system (380 ~ 415 VAC)
Control system (5 ~ 30 VDC)
* 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)
220
~ 240 VAC
AC Power source
To next unit
(Indoor unit)
MA remote controller wiring
(Non-polar 2 wire)
17 ~ 30 VDC
9 ~ 12 VDC
ME remote
controller
MA remote
controller
Indoor unit
TB2
TB15
Terminal block for
power source
TB5
Terminal block
for MA remote
controller
Terminal block
for transmission
line connection
17 ~ 30 VDC
380 ~ 415 VAC
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
16 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
CN40
Terminal block for
transmission line
for centralized control
(24 ~ 30 VDC)
TB7
Indoor/outdoor
transmission block
(24 ~ 30 VDC)
TB3
Rectifier