Mitsubishi Electric CMB-WP108NU-AA Service Handbook page 165

[ VIII Troubleshooting ]
3) PURY-EP168YNU-A
Noise filter board
Noise filter
TB1
AC Power source
YNU: 460 VAC
Fuse
Power-supply
terminal block
Surge protector
Filter board
Noise filter
Control board
Solenoid valve
Four-way valve
Relay/LEV
drive circuit
72C
LEV
USB circuit
TB7
Terminal block for
transmission line
CN40
for centralized control
(24-30 VDC)
TB3
Indoor/outdoor
transmission block
(24-30 VDC)
TB1
AC Power source
AC 208/230 V
Terminal block for
power source
TB2
Terminal block
for transmission
M-NET
line connection
transmission line
DC 17 ~ 30 V
(Non-polar 2 wire)
TB2
AC Power source
AC 208/230 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.)
HWE2206A
Inverter board
Rectifier
Fuse
15 V power supply
Transformer box
converter
Transformer Transformer
Power-supply board
Inverter-
Fuse
reset circuit
Rectifier
Microcomputer
Circulating fan
Control circuit
3.3 V
Regulator
power supply
5 V
DC-DC
power supply
converter
Transmission
power-supply
detection circuit
HBC controller
Indoor unit
ME remote
controller
MA remote
controller
DCL 72C Smoothing capacitor
Converter
Converter
drive circuit
DC-DC
5 V power supply
Fuse
FAN board
18 V power supply
DC-DC
converter
17 V power supply
30 V power supply
DC-DC
converter
24 V power supply
DC-DC
FAN board
converter
12 V power supply
9 V power supply
Relay drive circuit
Circulating fan
Cooling fan
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AC power source (YNU: 460 VAC)
Control system (5-30 VDC)
Inverter Compressor
Inverter
drive circuit
Microcomputer
Inverter Heat exchanger fan
Fuse
Inverter
drive circuit
Microcomputer
5 V power supply
Inverter Heat exchanger fan
Fuse
Inverter
drive circuit
5 V power supply Microcomputer
GB