Mitsubishi P336 User Manual

[ 

III  Outdoor Unit Components ]

- 60 -

HWE09120

GB

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.)

SC-L1
Input(L1)

SC-L2
Input(L2)

SC-L3
Input(L3)

IGBT
(Rear)

Bus voltage check
terminal (P)
Note

Bus voltage check 
terminal (N)
Note 1

SC-P2
Bus voltage Input(P)

SC-P1
Rectifier diode output (P)

LED1
Lit: Inverter in normal operation
Blink: Inverter error

CN6
Open: No-load operation setting
Short-circuited: Normal setting

CN5V
    GND
    5VDC output

RSH1
Overcurrent detection 
resistor

CN4
    GND(Fan Board)
    Serial communication

signal output

CN2
   Serial communication
  signal output
   GND
   17VDC input

SC-V
Inverter output(V)

CNTYP Inverter 
board type

SC-W
Inverter output(W)

SC-U
Inverter output(U)

CT22
Current sensor(W)

CT12
Current sensor(U)

C30    C37
Smoothing capacitor

CN1
Bus voltage output
    N
    P

CT3
Current sensor(L3)