Filter
Top Products
68
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
Outdoor power circuit board
PUZ-A18NHA2
PUZ-A18NHA2-BS
PUY-A12/18NHA2
PUY-A12/18NHA2-BS
1, 2, 6, 7 : +
5 : –
]
[
LD1-LD2
280-380V DC
Connect to
the outdoor
controller
circuit board
(CNDC)
R, S
Connect to the ACL
208/230V AC
U, V, W
Connect to the compressor (MC)
Voltage among phases: 5V to 180V AC
LD9
Connect to
the earth
Only A24
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
Brief check of DIP-IPM and DIP-PFC
W 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
P-U, P-V, P-W, N-U, N-V, N-W
2. Check of DIP-PFC
P-R, P-S, R-N, S-N
OCH429--3.qxp 07.11.20 9:19 AM Page 68