Outdoor Power Board - Mitsubishi PUMY-P60NKMU Technical & Service Manual

Outdoor power board

PUMY-P60NKMU
PUMY-P60NKMU-BS
CN4
Connect to the outdoor
controller circuit board (CN4)
N2
Connect to the smoothing
capacitor CB -
U/V/W P2
Connect to the compres- Connect to the
sor (MC) Voltage among smoothing capacitor
phases: 10 V-180 V AC CB +
OCH502C
Brief check of POWER MODULE
* Usually, each point is in a state of being short-circuited if they are broken.
Measure the resistance in the following points (connectors, etc.).
If they are short-circuited, it means that they are broken.
1. Check of POWER MODULE
1.Check of DIODE circuit
L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1
2.Check of IGBT circuit
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
Note:The marks, L1 , L2 , L3 , N1 , N2 , P1 , P2 , U , V and W
shown in the diagram are not actually printed on the board.
CN2
Connect to the outdoor controller circuit board (CN2)
1-5: Transmitting signal to outdoor controller circuit
board (0-5 V DC)
2-5: Zero cross signal (0-5 V DC)
3-4: 18 V DC
6-5: 16 V DC
7-5: 16 V DC
CN52C
52C driving signal
Connect to the outdoor
controller circuit board
(CN52)
DCL1, DCL2 EI, E4
Connect to DCL Connect to
the earth
90
CNDC
280-380 V DC (1+, 3-)
Connect to the outdoor
controller circuit board
E2, E3
(CNDC)
Connect to the earth
CNAC1, CNAC2
NI, LI
203/230 V AC Voltage of 208/230 V AC
Connect to the out-
is input (Connect to the
door controller circuit
terminal block (TB1))
board (CNAC)