23
Thermal relay broken
Replace the thermal relay
Over/Lack voltage
more
Than 15%
Become normal after voltage ok
Relevant
potentiometer
broken
Replace the potentiometer
Main PC board broken
Replace the PC board
5
Panel knob
not adjustable
Cable broken/fallen off
Find the disconnected wire and
Connect reliably
Digital Amp meter
broken
Change the meter
Cable broken/fallen off
Find the disconnected wire and
Connect reliably
6
No display on
the AMP meter
Main PC board broken
Replace the PC board
Wrong connection
between torch and
welder
Check and correct according the
manual
Argon not pure
Use 99.99% pure Argon
7
Arc piloting
not
smooth
Tungsten electrode or
pin broken
Use qualified Tungsten electrode
8 Power
trip
First turning on after
power long time
(2days more) off
Not fault, trip caused by the
charging filter capacitor in the main
board, return on the power switch
9
Others
Please contact with the
supplier/manufacture