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Outdoor power circuit board
PUMY-P100VHM
PUMY-P125VHM
PUMY-P140VHM
PUMY-P100VHMA
PUMY-P125VHMA
PUMY-P140VHMA
PUMY-P100VHMA-BS
PUMY-P125VHMA-BS
PUMY-P140VHMA-BS
TABU/V/W
Connect to the compressor (MC)
Voltage among phases:10V~180V AC
TABP1/SC-P1
Connect to 52C
TABP2/SC-P2
Connect to the
ACTM(P)
CN4
Connect to the
outdoor controller
circuit board (CN4)
CN2
Connect to the outdoor controller circuit board
(CN2)
1
-
5
:Transmitting signal to the outdoor
controller circuit board (0~5V DC)
2
-
5
:Zero cross signal (0~5V DC)
3
-
4
:18V DC
6
-
5
:16V DC
7
-
5
:16V DC
CN3
Thermistor (TH8)
<Heatsink>
CN5
Detection of primary
current
Connect to the
outdoor noise filter
circuit board (CN5)
CNDC
280V-350V DC (
1
+,
3
–)
Connect to the outdoor con-
troller circuit board
TABS/T
Connect to the outdoor
noise filter circuit board
Voltage among
phases:220-240V AC
TABN1/SC-N1
Connect to the ACTM(-)
TABN2/SC-N2
Connect to the
ACTM(N2)
Brief Check of POWER MODULE
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 POWER MODULE
1
.Check of DIODE circuit
S - P1 , T - P1 , S - N1 , T - N1
2
.Check of IGBT circuit
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
Note:The marks, L , N , N1 , N2 , P1 , P2 , U , V and W
shown in the diagram are not actually printed on the board.