-
268
-
L1
Red
Red
White
Blue
Red
White
DC295 ~ 339V
Blue
Red
White
Blue
Blue
Blac
k
Blac
k
Green
Green
TB
TB
L2
L3
N
E
Noise filter
DM
Control PCB
CM
In
v
er
ter PCB
1
2/N
3
E
L1i
L2i
L3i
Ni
CNW
CNM
CNA2
CNI1
CNA1
F1 (250V
, 2A)
F1 (250V
, 4A)
CNO1
CNW1
CNI2
CNR
CNW2
N
P
P
o
w
er tr
ansistor ther
mistor
U
V
W
CNF
AN1
CNIP
CNW2
F
(8A)
E
L1o
AC
1
R5
+4
-6
AC
2
AC
3
L2o
L3o
No
CT
52C
FMO1
+
+
-
-
LED2
(Red)
LED1
(Green)
LED1
(Y
ello
w)
Po
wer supply check:
Measure the po
wer supply L1,L2,L3
(It is normal if it is
A
C380/415V)
Fuse check:
There should be
continuity
.
*
Noise f
ilter check:
There should be continuity
.
There should be no shorts between phases.
Resistance check:
Resistance is measured
(15
Ω
)
DC Reactor contiuity
check:55m
Ω
or less
Capacitor check:
Check for anomaly in appearance
such as damage,swwll,etc.
DC295 ~ 339V
*
DC295~339V
When the outdoor
unit f
an motor is
anomalous:
(Refer to page 280)
0
20
40
60
80
100
120
140
160
180
200
0
20
40
60
80
100
120
140
T
emperature-resistance characteristics of
po
wre transistor thermistor (Tho-IP)
T
emperature (˚C)
Thermistor resistance (k
Ω
)
LED 1 (Yellow) Check
Flashing 1 time:Current cut (Power transistor overcurrent)
• Compressor wiring short circuit
• Inverter PCB failure
• Power transistor failure
Flashing 2 times:Inverter PCB abnormal
• Inverter PCB failure
Flashing 3 times:Mounting and dismounting anomaly
• Compressor failure
• Inverter PCB failure
Flashing 4 times: Compressor starting failure
• Compressor failure
• Inverter PCB failure
• Power transistor failure
Flashing 5 times:Current cut failure
• Inverter PCB anomalous
Lighting:Communications between inverter and
outdoor unit anomalous.
• Connectors CNI-1, 2 are disconnected
or there is a disconnection between
connectors.
• Outdoor unit control PCB anomalous.
• Inverter PCB anomalous.
Light continuously : Normal
F1 (250V
, 6.3A)
F2 (250V
, 2.5A)
Fuse check:
Three should be continuity
.
If it is f
aulty
, replace the in
v
erter board.
LED1(Green) check:
If it flashes, the microcomputer
operates normaly
.
• If it is of
f,check if CNI1 connector is connected properly
.
The po
wer is supplied by the in
v
erter PCB through CNI1
FDCV
A402~602HESAR
Outdoor unit check points
Check items with the *mark when the po
wer is ON.
