110
OCH668G
P1
N1
R
S
N2
P3
U
V
W
N3
L3
P2
L1
L2
CNAC1
230 VAC
Connect to the M-NET
power circuit board (CN1)
CNAC2
230 VAC
Connect to the outdoor multi
controller circuit board (CNAC)
EI, E3, E4
Connect to the electrical parts box
CN2
Connect to the outdoor multi controller
circuit board (CN2)
1
–
5
: Transmitting signal to outdoor con-
troller circuit board (0
–
5 VDC)
2
–
5
: Zero cross signal (0
–
5 VDC)
3
–
4
: 15 VDC
6
–
5
: 15 VDC
7
–
5
: 15 VDC
CN4
Connect to the outdoor
multi controller circuit
board (CN4)
U/V/W
Connect to the com-
pressor (MC)
Voltage amang
phases: 10-180 VAC
NI, LI
Voltage of 230
VAC is input
(Connect to the
terminal block
(TB1))
CNDC
280
–
380 VDC (
1
+,
3
−
)
Connect to the out-
door controller circuit
board (CNDC)
CN6
Thermistor
TB1A, TB2A, TB3A,
TB1B, TB2B, TB3B
Connect to DCL
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 POWER MODULE
1
Check of DIODE circuit
R - P1 S - P1 R - N1 S - N1
2
Check of IGBT circuit
P2 - L1, P2 - L2, P2 - L3, N2 - L1, N2 - L2, N2 - L3
3
Check of INVERTER circuit
P3 - U , P3 - V , P3 - W , N3 - U , N3 - V , N3 - W
Note: The marks R , S , L1 , L2 , L3 , P1 , P2 , P3 , N1 , N2 , N3 , U , V and W
shown in the diagram are not actually printed on the board.
Outdoor power circuit board
PUMY-SP112VKM(-BS)
PUMY-SP125VKM(-BS)
PUMY-SP140VKM(-BS)
PUMY-SP112VKM-ET(-BS)
PUMY-SP125VKM-ET(-BS)
PUMY-SP140VKM-ET(-BS)
PUMY-SP112VKM-ER(-BS)
PUMY-SP125VKM-ER(-BS)
PUMY-SP140VKM-ER(-BS)
