OCH790 _96
■
Outdoor power circuit board
PUMY-P112VKM6(-BS)
PUMY-P112VKM6-ER(BS)
PUMY-P125VKM6(-BS)
PUMY-P125VKM6-ER(BS)
PUMY-P140VKM6(-BS)
PUMY-P140VKM6-ER(BS)
P1
S
R
N1
P2
L1
L2
L3
N2
P3
U
V
W
N3
CNAC1
220-240 VAC
Connect to the
M-NET power circuit
board (CN1)
R/LI, S/NI
Voltage of 220-
240 VAC is input
(Connect to the ter-
minal block (TB1))
U/V/W
Connect to the com-
pressor (MC) Voltage
among phases:
10–180 VAC
CNDC
310–380 VDC (
1
+,
3
−)
Connect to the outdoor
controller circuit board
(CN52)
CN2
Connect to the outdoor multi controller
circuit board (CN2)
1
–
5
: Transmitting
signal to outdoor controller
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 out-
door multi controller
circuit board (CN4)
CN6
Thermistor (TH8)
CNAC2
220-240 VAC
Connect to the out-
door multi controller
circuit board (CNAC)
TB1B, TB3B, TB2B,
TB1A, TB2A, TB3A
Connect to DCL
El, E2, E3, E4
Connect to the electrical parts box
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 N2 - L1 N2 - L2
3 Check of INVERTER circuit
P3 - U , P3 - V , P3 - W , N3 - U , N3 - V , N3 - W
Note: The marks R , S , L1 , L2 , P1 , N1 , U , V and W
shown in the diagram are not actually printed on the board.
