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M1.3.MIG200I-MIG250I-MIG350I.NLFREN 09102018
EN
8 Trouble shooting
WARNING!
The following operation requires sufficient professional knowledge on electric aspect and comprehensive
safety knowledge. Operators should be holders of valid qualification certificates which can prove their skills
and knowledge. Make sure the input cable of the machine is disconnected from the electricity utility before
uncovering the welding machine.
8.1 Common malfunctions analysis and solutions
Malfunction phenomena
Cause analysis
Solutions
There is no display on the current
meter and voltage meter after turning
on the machine.
The power cord is not well connected. Reconnect the power cord.
The welding machine fails.
Ask professionals to check.
The fan does not work during
welding.
The power cord for the fan is not well
connected.
Reconnect the power cord for the fan.
Auxiliary power fails.
Ask professionals to check.
The overheating LED is on.
The overheating protection circuit
works.
It can be recovered after the machine
cools down.
8.2 Trouble shooting in MIG/MAG
Malfunction phenomena
Cause analysis
Solutions
There is no response when pushing
the torch trigger and the alarm
indicator does not illuminate.
The welding torch is not well
connected with the wire feeder.
Reconnect it.
The torch trigger fails.
Repair or replace the welding torch.
When the torch trigger is pushed,
there is gas output, but there is no
output current, and the alarm indicator
does not illuminate.
The earth cable is not well connected
with the workpiece.
Reconnect it.
The wire feeder or welding torch fails. Repair the wire feeder or welding
torch.
There is output current when pushing
the torch trigger to feed gas, but the
wire feeder does not work.
The wire feeder is clogged.
Unclog it.
The wire feeder fails.
Repair it.
The control PCB or wire feeding
power PCB inside the machine fails.
Replace it.
The welding current is unstable.
The pressure arm on the wire feeder is
not properly adjusted.
Adjust it to get proper pressure.
The drive roll does not match the wire
size being used.
Make sure they match with each other.
The contact tip of the welding torch is
badly worn.
Replace it.
The wire-feeding tube of the welding
torch is badly worn.
Replace it.
The electrode is of poor quality.
Use electrode of good quality.
We are still constantly improving this welder, therefore, some parts of this welder may be changed in order to
achieve better quality, but the main functions and operations will not be alternated. Your understanding would be
greatly appreciated.
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