Mitsubishi Electric PURY-P72 Service Handbook page 78

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[III Outdoor Unit Components
1
(3) PURY·P72, P96, P120YHMU·A
SCOw
Inverter oulput(W)
SC-U
Inverter output(U)
CN4
(j)GND(INV Boartl)
®
Serial communication
signal output
o
o
CN2
(j) Serial communication
signal output
®GND
(J) Input 17VDC
MIliir,,",,-;- CNTYP Inverter
board type
~ffi--f1oI'i!r*r-
sc-v
Inverter OUlput(V)
o
~-fJ'--+-- C30-C37
Smoothing capacitor
o
•
SC-P1 CN6
Rectifier diode
output
(P) Open: No4oad operatlon setting CN5V RSH1
LED1 Sha1-circuited: Normal
setting
CDGND Overcurrent detection
Lit Inverter
in nonnaJ opellIlioo
®OUlput5VDC resistor
Blink: Inverter error
SC-P2
Bus vohage Input(P)
OI:~~1
CTJ
Current sensor(L3)
SC-L1
Input(Ul
SC-L2
Input(L2)
SC-L3
Input(L3)
Bus voltage check
tenninal (P)
+--=-=::---t:~
Note
IGBT
(Rear)
CN1
Bus voltage OUtpul'+
--fi. .
(1)N -
®P
Bus voltage check
lenninal (N)
+-7"~"""";::::"'~---T--t-+-t-t--1Itt---ttI~!=J
Nole 1 1
I
I '"
I
\ _ - - - - - - - - - - - - - - - - - - - - - - - __
~
I
~~I ~
sc-u '\
I
Note
I
1) Before inspecting the inside of the control box, tum 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 tumed off.)
HWE0803A
- 68-
GB