Mitsubishi Electric PURY-P72TYJMU-A Service Handbook page 83

[ III Outdoor Unit Components ]
(3) PURY-P72, P96, P120, P144YJMU-A
SC-P2
Bus voltage Input(P)
Bus voltage check
terminal (P)
Note
IGBT
(Rear)
CN1
Bus voltage output
N
P
Bus voltage check
terminal (N)
Note 1
SC-L1
Input(L1)
SC-L2
Input(L2)
SC-L3
Input(L3)
CT3
Current sensor(L3)
1) Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that
the voltage between FT-P and FT-N on INV Board has dropped to DC20V or less.
(It takes about 10 minutes to discharge electricity after the power supply is turned off.)
HWE0913A
SC-P1
CN6
Rectifier diode output (P)
Open: No-load operation setting
Short-circuited: Normal setting
LED1
Lit: Inverter in normal operation
Blink: Inverter error
- 74 -
CN5V RSH1
GND Overcurrent detection
5VDC output resistor
CT12 CT22
Current sensor(U) Current sensor(W)
C30 C37
Smoothing capacitor
CN4
GND(Fan Board)
Serial communication
signal output
CN2
Serial communication
signal output
GND
17VDC input
CNTYP Inverter
board type
SC-V
Inverter output(V)
SC-W
Inverter output(W)
SC-U
Inverter output(U)
GB