Jasic JM-400S MIG Series, Operator'S Manual

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15
Malfunction phenomena Cause analysis Solution
The fan does not work or it works abnormally.
The 3-phase power cord is not connected. Reconnect the 3-phase power cord.
The fan does not work or it works abnormally.
Phase failure Solve the phase failure problem.
The fan does not work or it works abnormally.
The mains voltage is too low.
Welding can be carried out after the mains
voltage recovers.
There is no no-load voltage.
The mains voltage is too low.
Welding can be carried out after the mains
voltage recovers.
There is no no-load voltage.
Phase failure Solve the phase failure problem.
There is no no-load voltage, and the overload
LED is on.
Overload protection
It can recover automatically after the welding
machine is cooled.
No response when pushing the torch trigger and
the protection LED is off.
The welding torch is not well connected with the
wire feeder.
Reconnect it.
No response when pushing the torch trigger and
the protection LED is off.
The control cable of the wire feeder is not well
connected with the welding power supply.
Reconnect it.
No response when pushing the torch trigger and
the protection LED is off.
The torch trigger fails. Repair or replace the welding torch.
When the torch trigger is pushed, there is gas
output and the wire feeder works, but there is no
output current, and the protection LED is off.
The earth cable is not well connected with the
workpiece.
Reconnect it.
When the torch trigger is pushed, there is gas
output and the wire feeder works, but there is no
output current, and the protection LED is off.
The wire feeder cable is not well connected. Reconnect it.
When the torch trigger is pushed, there is gas
output and the wire feeder works, but there is no
output current, and the protection LED is off.
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 control cable of the wire feeder is broken. Get it repaired or replaced.
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.
There is output current when pushing the torch
trigger to feed gas, but the wire feeder does not
work.
The wire feeder fails. Repair it.
There is output current when pushing the torch
trigger to feed gas, but the wire feeder does not
work.
The control PCB or wire-feeder 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 welding current is unstable.
The drive roll does not match the wire size being
used.
Make sure they match with each other.
The welding current is unstable. The contact tip of the welding torch is badly worn. Replace it. The welding current is unstable.
The wire-feeding tube of the welding torch is
badly worn.
Replace it.
The welding current is unstable.
The welding wire is of poor quality.
Replace it with welding wire of good
quality.
The electrode holder becomes very hot.
The rated current of the electrode holder is lower
than its actual working current.
Replace it with a higher rated current.
Other malfunction Contact the service centre