Stricking the arc for TIG Operation: when tungsten electrode touches the workpiece
，
the short-circuit
current is only 28A . After generating arc, current can rise to the setting welding current. If the
tungesten electrode touches the workpiece when welding, the current will drop to 5A within 2s, which
can reduce tungsten waste
，
prolong the using life of the tungsten electrode
，
and prevent tungsten
clipping.
Scraping arc
S/N
Troubles
Reasons
Solutions
1
Turn on the power
source, and fan works,
but the power light is
not on.
The power light damaged or
connection is not good
Test and repair the inside
circuit of power light Pr3
Power PCB failures
Repair or change power
PCB Pr2
2
Turn on the power source,
and the power light is on,
but fan doesn’t work
There is something in the fan
Clear out
The fan motor damaged
Change fan motor
3
Turn on the power source,
and the power light is not
on, and fan doesn’t work
No input voltage
Check whether there is
input voltage
Overvoltage (Input voltage is too
much or not)
Check input voltage
4 No no-load voltage output There is trouble inside the
machine
Check the main circuit, Pr1
and Pr2
5 No current output in the
welding
Welding cable is not connected
with the two output of the
welder.
Connect the welding cable
to the welder’s output
Welding cable is broken
Wrap, repair or change the
welding cable
Earth cable is not connected or
loosen
Check the earth clamp
6
Not easy to start arc in the
welding, or easy to cause
sticking
The plug loosen or connect not
well
Check and tighten the plug
Oil or dust covered the workpiece Check and clear out
Wrong mode selected
Check the MMA selector
switch is selected
7 The arc is not stable in the
welding process
The arc force is too small
Increase the arc force
8 The welding current can not
be adjusted
Welding current potentiometer in
the front panel connection not so
good or damaged
Repair or change the
potentiometer
9 The penetration of molten
pool is not enough(MMA)
The welding current adjusted too
low
Increase the welding current
The arc force adjusted too small Increase the arc force
10 Arc blow
Airflow disturbance
Use the shelter from airflow
The electrode eccentricity
Adjust the electrode angle
4.3
List of error
code
Error Type
Error code
Description
Lamp status
Thermal relay
E01
Over-heating(1st thermal relay)
Yellow lamp(thermal
protection) always on
E02
Over-heating(2nd thermal relay)
Yellow lamp(thermal
protection) always on
E03
Over-heating(3rd thermal relay)
Yellow lamp(thermal
protection) always on
E04
Over-heating(4th thermal relay)
Yellow lamp(thermal
protection) always on
E09
Over-heating(Program in default)
Yellow lamp(thermal
protection) always on
Welding
machine
E10
Phase loss
Yellow lamp(thermal
protection) always on
E13
Under voltage
Yellow lamp(thermal
protection) always on
E14
Over voltage
Yellow lamp(thermal
protection) always on
E15
Over current
Yellow lamp(thermal
protection) always on
Switch
E20
Button fault on operating panel
when switch on the machine
Yellow lamp(thermal
protection) always on
E21
Other faults on operating panel
when switch on the machine
Yellow lamp(thermal
protection) always on
Yellow lamp(thermal
protection) always on
Communication
E40
Connection problem between wire
feeder and power source
E41
Communication error
