Mitsubishi Electric PUHZ-FRP71VHA Service Manual page 57

Outdoor power circuit board
PUHZ-FRP71VHA
LD1-LD2
280-380V DC
Connect to
the outdoor
controller
circuit board
(CNDC)
CN2
Connect to the outdoor controller circuit board (CN2)
1-5: Outdoor power circuit board
to the outdoor controller circuit board (0-5V DC)
2-5: Zero cross signal (0-5V DC)
[
3-4: Not used
1, 2, 6, 7 : +
6-5: 16V DC
7-5: 16V DC
OCH544
Brief Check of DIP-IPM and DIP-PFC
* Usually, they are 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 DIP-IPM
2. Check of DIP-PFC
Note: The marks, L , N , N1 , N2 , P1 , P2 , U , V and W
shown in the diagram are not actually printed on the board.
Transmitting signal
→
]
5 : –
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
P1 - L , P1 - N , L - N1 , N - N1
R, S
Connect to the ACL
220-240V AC
CN3 CN4
Thermistor
Connect from the
<Heatsink> outdoor controller
(TH8) circuit board
(CN4)
57
U, V, W
Connect to the compressor (MC)
Voltage among phases: 5V to 180V AC
CN5
Primary current detection
(Connect to the outdoor
noise filter circuit board
(CN5))
DIP-PFC
LD9
Connect to
the earth
Only RP60,
71
DIP-IPM