Jasic MIG 200 - TROUBLESHOOTING; Description of fault

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TROUBLESHOOTING
The following operaon requires sucient professional knowledge on electric aspects and
comprehensive safety knowledge. Make sure the input cable of the machine is disconnected
from the electricity supply and wait for 5 minutes before removing the machine covers.
Before arc welding machines are dispatched from the factory, they have already been checked
thoroughly. The machine should not be tampered with or altered. Maintenance must be carried out
carefully. If any wire becomes loose or is misplaced, it maybe potenally dangerous to the user!
Only professional maintenance personnel should repair the machine!
Ensure the power is disconnected before working on the machine. Always wait 5 minutes aer power
switch o before removing the panels.
Descripon of fault Possible cause
The power LED is OFF and the fan is not
funconing
The primary supply voltage has not been switched ON
or input fuse has blown
The welding power source input switch is switched
OFF
Loose connecons internally
The fault LED is ON and the fan is running The machine is under over-heang protecon status
It can recover automacally aer the welding
machine is cooled
Check incoming mains supply to ensure it is within
230V +/- 15%
Wire feed motor does not rotate when the Wire feed speed maybe set to zero
MIG torch trigger switch is depressed
Check supply to wire feed motor
Motor PCB may be faulty
Welding current reduces when welding Poor work lead connecon to the work piece
TIG electrode melts when arc is struck TIG torch is connected to the (+) VE terminal
No gas ow when the MIG torch trigger
switch is depressed
Empty gas cylinder
Gas regulator is turned o
Gas hose is blocked or cut
Torch trigger switch lead is disconnected or
switch/lead is faulty
Dicult to ignite the arc The welding voltage is too low or the wire feed speed
is set too high
The electrode holder becomes very hot The rated current of the electrode holder is smaller
than its actual working current, replace it with a
higher rated current capacity
Excessive spaer in MMA welding The output polarity connecon is incorrect, exchange
the polarity
Other malfuncon Contact your supplier
Overheat LED lights up Let the machine cool, it will automacally start again
Insucient cooling air
Cooling fan is not running
Wire connues to feed through when the
MIG torch switch is released
The trigger mode switch is set to 4T rather than 2T
Faulty MIG torch switch