Nr. Troubles
Solution
Reasons
6
No no-load
voltage output
(MMA)
If the overheat indicator is on
The main circuit is broken
The machine is broken
Wait a few minutes, the machine
can be operated normal
Check and repair
Consult the dealer or the
manufacturer
5
The number of the
display is not
intact
The display panel is damaged
Change the display panel
Digital tube is broken
Change it
7
The welding cable is not connected
with the two output if the welder
Connect the welding cable to
the welder's output
The welding cable is damaged
The earth cable connected unstably
The welding cable is too long
Input voltage not stable
There is oil or dust on the workpiece
There is no Argon flow or the
connection is poor
The distance between tungsten
electrode and workpiece is too long
Repair or change it
Check the earth cable
Use an appropriate welding cable
Check the power supply
Check and remove it
Reduce the distance
(about 3mm ,less than 5mm)
Check and reconnect
Arc can not be
ignited (TIG) ,
there is spark
on the HF
igniting board
8
The HF igniting board does not work
The distance between discharger is
too short or too long
The malfunction of the welding gun
switch
No argon gas flow or the air tube
connect not good
Repair or change it
Adjust the distance (about 0.8mm)
Check the welding torch switch,
control cable and aero socket.
Check and reconnect
Arc can not be
ignited (TIG) ,
there is no spark
on the HF
igniting board
9
Check if the function selected MMA Change the function to TIG
Check the HF funtion is selected
Select the HF funtion
HF board is broken
Earth clamp connect not stable
Repair or change it
Check the earth clamp
No argon gas flow or the air tube
connect not good
Check and reconnect
Turn on the
power source,
everything is
normal , but no
HF igniting
10
Remove it
Change it
Gas always flows
Something is in the valve
Electromagnetic valve is damaged
11
Gas cylinder is close or gas
pressure is low
Something is in the valve
Open or change the gas cylinder
Remove it
Change it
Change it
Pressure too high or air regulator is
broken
Check gas
No gas flow (TIG)
Electromagnetic valve is damaged
Air tube is brocken
Nr. Troubles
Solution
Reasons
13
Repair or change it
Change it
Change it
No AC output
while selecting
"AC"
The power board is broken
The AC drive board damaged
The AC IGBT/IGBT module damaged
12
Checking if the electorde stick to
the work piece that the anti-stick
function is on
Repair or change it
The welding
current cannot
be adjusted
Control board is broken
Shut off the power when changing the torch
Separate the electrode and
work piece
Repair or change it
Control board is broken
14
The welding
current displayed
isn't accordant
with the actual
value
Air flow is not correctly connected
Machine is broken
The min value displayed isn't
accordant with the actual value
Adjust potentiometer Imin on
the control board
Adjust potentiometer Imax on
the control board
The max value displayed isn't
accordant with the actual value
17
18
19
Tig torch is connected to the
positive terminal
Tungsten electrode is too big for
the welding current
Check the earth clamp position on
the work piece
Check the welding circuit is correct,
for example the earth clamp is
connected to work piece
Connect the tig torch to negative
terminal
Adjust the position of earth clamp
Connect the circuit correctly
Check the air flows
Consult the dealer or the
manufacturer
Select the correct size of tungsten
electrode
Tig electrode melts
when welding
Arc flutters during
Tig welding
When Cut function
is selected ,there is
HF but cannot cutting
15
The penetration
of molten pool is
not enough
Adjust the distance from torch
to work piece
Use the suitable length from
manufacturer
Increase the welding current
The welding current is adjusted
too low
The arc is too long in the welding
process
The power cable or the welding
cable is too long
Change to suitable setting
AC Width adjustment is not correct
16
Over-heat protection ,too much
welding current
Reduce the welding current
Reduce the welding time
Over-heat protection ,working too
much time
Over-current protection, current in
the main circuit is out of control
Check and repair main circuit
and drive board
Thermal overload
indicator light is on
Check the power supply
Change the fan
Input voltage is too low
Fan is broken
Troubleshooting
Troubleshooting
58
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