48
Outdoor power circuit board
PUHZ-SW75VHA.UK
PUHZ-SW75VHA-BS.UK
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
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
2. Check of DIP-PFC
P1 - L , P1 - N , L - N1 , N - N1
Note:The marks L , N ,
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
:Outdoor power circuit board
→
Transmitting signal
to the outdoor controller circuit board (0-5V DC)
2
-
5
: Zero cross signal (0-5V DC)
3
-
4
: Not used
6
-
5
: 16V DC
7
-
5
: 16V DC
1
,
2
,
6
,
7
: +
5
: –
]
[
LD1-LD2
280-380V DC
Connect to
the outdoor
controller
circuit board
(CNDC)
R, S
Connect to the ACL
230V AC
U, V, W
Connect to the compressor (MC)
Voltage among phases: 5V to 180V AC
LD9
Connect to
the earth
CN5
Primary current detection
(Connect to the outdoor
noise filter circuit board
(CN5))
CN4
Connect from the
outdoor controller
circuit board
(CN4)
CN3
Thermistor
<Heatsink>
(TH8)
DIP-IPM
DIP-PFC
P1
N
L
N1
N1
N2
W
V
U
P2
OCH533A