121
OCH673D
Outdoor power circuit board
PUMY-P112YKM4(-BS)
PUMY-P125YKM4(-BS)
PUMY-P140YKM4(-BS)
Brief Check of POWER MODULE
If they are short-circuited, it means that they are broken.
Measure the resistance in the following points (connectors, etc.).
1. Check of
DIODE MODULE
L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1
2.
Check of DIP-IPM
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.
CN5
Detection of primary
current (Connect to
the outdoor noise filter
circuit board (CNCT))
CN4
Connect to the out-
door multi controller
circuit board (CN4)
CN2
Connect to the outdoor multi controller circuit board (CN2)
1
–
5
:
Power circuit board
→
Transmitting signal to the
outdoor multi controller circuit board (0–5 V DC)
2
–
5
: Zero cross signal (0–5 V DC)
3
–
4
: Not used
6
–
5
: 15 V DC
7
–
5
: 15 V DC
[
5
: –
1
,
2
,
6
,
7
: + ]
TB-U, TB-V, TB-W
Connect to the compressor (MC)
Voltage among phases:
10–400 V AC
Diode module
U
P2
V
W
N2
L3
N1
L1
P1
L2
DIP-IPM
TAB connec-
tor on X52CA
Connect to the
RS resistor
CN6
Thermistor
<Heat sink> (TH8)
TB-L1,
TB-L2,
TB-L3
Connect to the
outdoor noise
filter circuit board
(LO1, LO2, LO3)
400 V AC
L3OUT-L3IN
Lead connect
TB-P3
Connect to the DCL
TB-P1
Connect to
the DCL
