117
Outdoor power circuit board
PUMY-P112VKM3(-BS)
PUMY-P125VKM3(-BS)
PUMY-P140VKM3(-BS)
CNAC1
230 V AC
Connect to the M-NET
power circuit board (CN1)
CNAC2
230 V AC
Connect to the outdoor
multi controller circuit board
NI, LI
Voltage of 230 V AC is
input (Connect to the
terminal block (TB1))
EI, E4
Connect to the
electrical parts
box
DCL1, DCL2
Connect to DCL
U/V/W
Connect to the compres-
sor (MC) Voltage among
phases: 10–180 V AC
CNDC
310
–
350 V DC (
1
+,
3
−)
Connect to the outdoor
multi controller circuit
board (CNDC)
E2, E3
Connect to the elec-
trical parts box
CN52C
52C driving signal
Connect to the outdoor
multi controller circuit
board (CN52C)
CN2
Connect to the outdoor multi controller circuit board (CN2)
1
–
5
:Transmitting signal to outdoor multi controller circuit
board (0–5 V DC)
2
–
5
: Zero cross signal (0–5 V DC)
3
–
4
: 18 V DC
6
–
5
: 16 V DC
7
–
5
: 16 V DC
CN4
Connect to the outdoor multi
controller circuit board (CN4)
Brief Check of POWER MODULE
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
R - L1 , S - L1 , R - N1 , S - N1
2
Check of IGBT circuit
L2 - N1
3
Check of INVERTER circuit
P - U , P - V , P - W , N1 - U , N1 - V , N1 - W
Power
module
Note: The marks R , S , L1 , L2 , P , N1 , U , V and W
shown in the diagram are not actually printed on the board.
S
R
(CNAC)
W V
U L2
P
N1 L1
OCH632A
Summary of Contents for PUMY-P112VKM3
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