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insulation is thought to be damaged and needs to be changed.
5.2 Troubleshooting
Before arc welding machines are dispatched from the factory, they have already been debugged accurately.
Maintenance must be performed carefully. If any wire becomes flexible or is misplaced, it may be a potential
danger to user!
Only Professional maintenance personal who are Authorized by Arcoweld can overhaul or repair the machine.
Always turn off the power source before removing covers or working on unit.
If there are any problems, please contact your authorized repairer or distributor.
If there are any issues with the welding machine, please consult the following trouble shooting chart:
S/N
Issue
Reasons
Solution
1
Turning on the power source,
and fan works, but the power
pilot lamp is not on.
The power light is damaged, or connection is
not good
Check and repair Pr7
The transformer of power is broken
Repair or change the transformer
Control PCB failures
Repair or change the control Pr4
2
Turning on the power source,
and the power lamp is on, but
fan doesn’t work
There is something in the fan
Clear out
The start capacitor of fan damaged
Change capacitor
The fan motor is damaged
Change fan
3
Turning on the power source,
the power lamp is not on, and
fan doesn’t work
No power supply input
Check whether there is power supply
The fuse inside the machine damaged
Change it (10A)
4
The number on the display is not
intact.
The LED in the display is broken
Change the LED
5
The max and min value displayed
doesn’t accord with the set
value.
The max value is not accordant (refer to 3.1)
Adjust potentiometer Imin on the power
board.
The min value is not accordant (refer to 3.1)
Adjust potentiometer Imaxin the current
meter.
6
No no-load voltage output
(MMA)
The machine is damaged
Check the main circuit and the Pr4.
7
Arc can not be
ignited (TIG)
There is spark
on the HF
igniting board.
The welding cable is not connected with the
two output of the welder.
Connect the welding cable to the
welder’s output.
The welding cable damaged.
Repair or change it.
The earth cable connected unstably.
Check the earth cable.
The welding cable is too long.
Use an appropriate welding cable.
There is oil or dust on the workpiece.
Check and remove it.
