Service manual

59
1
7
Outdoor power circuit board
PUHZ-RP1.6VHA
PUHZ-RP2VHA
PUHZ-RP2.5VHA
PUHZ-RP2.5VHA1
PUHZ-RP3VHA
PUHZ-RP3VHA1
1
3
(Red)
(White)
1, 2, 6, 7 : +
5 : –
]
[
–
+
P1 N L N1
N1
W V U P2
N2
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
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 above are not actually printed on the board.
LD1-LD2
300-380V DC
Connect to
the outdoor
controller
circuit board
(CNDC)
R, S
Connect to the ACL
220-240V AC
U, V, W
Connect to the compressor (MC)
Voltage among phases: 5V to 180V AC
LD9
Connect to
the earth
Only RP2.5,
3VHA
CN5
Primary current detection
(Connect to the outdoor
noise filter circuit board
(CN5))
CN4
Connect from the
outdoor controller
circuit board
(CN4)
CN3
Thermistor
<Heat sink>
(TH8)
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: 15V DC
7-5: 15V DC
DIP-IPM
DIP-PFC
OC294-D-2.qxp 05.3.9 11:03 AM Page 59