54
282V DC
282V DC
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
L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1
2
.Check of IGBT circuit
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
Outdoor Power circuit board
PUHZ-RP200YHA
PUHZ-RP250YHA
PUHZ-RP200YHA
1
PUHZ-RP250YHA
1
CN5
Detection of
primary current
(Connect to the
outdoor noise filter
circuit board (CN5))
CN4
Connect to the
outdoor controller
circuit board
(CN4)
CN2
Connect to the outdoor controller circuit
board (CN2)
1
-
5
: Power circuit board
➔
Transmitting
signal to the controller board (0-5V DC)
2
-
5
: Zero cross signal (0-5V DC)
3
-
4
: Not used
6
-
5
: 15V DC
7
-
5
: 15V DC
[
5
: –
1
,
2
,
6
,
7
: + ]
TB-U, TB-V,
TB-W
Connect to the
compressor (MC)
Voltage among
phases:
10V-400V AC
TB-L1, TB-L2, TB-L3
Connect to the
outdoor noise filter
circuit board
(LO1, LO2, LO3)
380V-415V AC
Note:The marks, L1 , L2 , L3 , N1 , N2 , P1 , P2 , U , V and W
shown in the diagram above are not actually printed on the board.
W
N2
N1
P2
P1
L1
L2
L3
W
W
TAB connecter
on X52A
Connect to the
RS resistor
TB-P1
Connect to the
DCL
}
–
+
}
}
565V DC
POWER
MODULE
TB-C1
Connect to the
smoothing capacitor
CB1
–
, CB2
+
TB-P2
Connect to the DCL
and the smoothing capacitor
CB1
+
CN1
Connect to the outdoor FAN
controller circuit board (CN5)
TB-N1
Connect to the
smoothing capacitor
CB2
–
+
OC338B-2.qxp 06.7.11 10:54 AM Page 54
