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4 Trouble Shooting And Error Checking
Notes:
The following operations must be performed by qualified electricians with valid certifications. Before maintenance,
you are suggested to contact local distributor to verify qualification.
Malfunctions
Solution
The meter show nothing;
Fan does not rotate;
No welding output
Confirm the power switch is on.
Power supply available for input cable.
Check if the three phase commute bridge is damaged.
There is malfunction occurs in the supplementary power source on control board (contact
dealers).
The meter shows;
Fan works normally;
No welding output
Check if all the sockets in the machine are connected well.
There is open circuit or badness of connect at the joint of output terminal.
The control cable on the torch is broken off or the switch is damaged.
The control circuit is damaged.(contact to dealers)
the meter shows;
Fan works normally;
Abnormal indicator lights.
It might be over-current protection, please turn off the power switch; restart the machine
after the abnormal indicator light winked.
It might be overheating protection, please wait for about 2-3 minutes until the machine
renew without turn off the power switch.
It might be multifunction of inverter circuit. (contact dealers)
Even if the machine comes up with abnormal phenomenon such as unable to weld, arc unstable or bad welding effect,
it is still early to judge that there is malfunction in the machine.
The above-mentioned abnormal phenomenon may be caused by some reasons. For example: tight parts loosen,
forgetting to switch on, wrong set up, cable broken and gas rubber pipe cracked, etc. Therefore, please test and inspect
these factors before deliver it back to the factory because a large number of troubles may be easily solved probably.
For this reason, an initial diagnosis list for general welding troubles is shown below. A trouble happened may be found in
the column of “Abnormal items” on up-right of the list, please inspect and maintain for the corresponding items which
have “
〇
" mark in the column according to the following list respectively.
Initial problems diagnose
Abnormal Items
Area and Item to be Inspected
and Maintained
N
o
a
rc
S
ta
rtin
g
N
o
G
a
s
o
u
t
N
o
W
ire
F
e
ed
in
g
B
a
d
A
rc
Ig
n
itio
n
U
n
sta
b
le
A
rc
D
irt
o
n
E
d
g
e
o
f
W
eld
b
e
a
d
W
ire
S
tic
k
to
m
ate
ria
l
W
ire
S
tic
k
to
C
o
n
du
cti
ve
T
ip
B
lo
w
h
o
le
F
o
rm
e
d
Distribution Boxes (Input
Protection Devices)
Turn on power supply or not?
Fuse burnt out
Connection joint loose
〇 〇 〇 〇 〇 〇
Input Cable
Examine whether the cable is cut off.
Connection joint loose
Over heat
〇
〇 〇 〇
