68
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-HRP100YHA
PUHZ-HRP125YHA
PUHZ-HRP100YHA2
PUHZ-HRP125YHA2
PUHZ-HRP100YHA2R1
PUHZ-HRP125YHA2R1
CN5
Detection of
primary current
(Connect to the
outdoor noise filter
circuit board (CNCT))
CN4
Connect to the
outdoor controller
circuit board
(CN4)
Note:The marks, L1 , L2 , L3 , N1 , N2 , P1 , P2 , U , V and W
shown in the diagram 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
POWER
MODULE
TB-C1
Connect to the
smoothing capacitor
CB1
–
, CB2
+
TB-P2
Connect to the smoothing
capacitor CB1
+
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
(L1-L01, L2-L02,
L3-L03)
380V-415V AC
TB-N1
Connect to the
smoothing capacitor
CB2
–
Connect to DCL
CN7
Connect to the
outdoor converter
circuit board
(CN7)
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 [
5
: –
1
,
2
,
6
,
7
: + ]
6
-
5
: 16V DC
7
-
5
: 16V DC
E
V
U
R22
OCH425D
