23
Common faults and solving methods
No. Breakdown Analysis Solutions
1
Cooling fan
Not work
Cooling fan broken Replace the fan
Cable broken/fallen off Find the disconnected wire and
Connect reliably
2
No piloting
high frequency
Torch switch broken Replace the torch
Main PC board broken Replace the PC board
Cable broken/fallen off Find the disconnected wire and
Connect reliably
3
No Argon
output
No Argon input Check the flow meter and resume
supplying gas to the welder
Main PC board broken Replace the PC board
Electromagnetism Valve
broken
Change the electromagnetism valve
Gas path blocked Clear the eyewinker and dredge the
gas path
4
Protection
Indicator On
Overheat inside the machine Become normal after the inside
temperature reduced
Thermal relay broken Replace the thermal rela
Over/Lack voltage more
Than 15%
Become normal after voltage o
5
Panel knob not
adjustable
Relevant potentiometer
broken
Replace the potentiometer
Main PC board broken Replace the PC board
Cable broken/fallen off Find the disconnected wire and
Connect reliably
6
No display on
the AMP meter
Digital Amp meter broken Change the meter
Cable broken/fallen off Find the disconnected wire and
Connect reliably
Main PC board broken Replace the PC board
7
Arc piloting not
smooth
rong connection between
torch and welder
Check and correct according the
manual
rgon not pure Use 99.99% pure Argon
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/manufactuer