the fan doesn't work, and no welding output.
Turn on the machine, the fan works, but the
output current is unstable and can't be
controlled by potentiometer when welding.
(1) The current potentiometer fails. Replace it.
(2) Check if any loose contact exists inside the
machine. If any, reconnect.
Turn on the machine, the power LED is on,
the fan works, but no welding output.
(1) Check if any loose contact exists inside the
machine.
(2) Open circuit or loose contact occurs at the
joint of output terminal.
(3) The overheating LED is on.
a) The machine is under over-heating
protection status. It can recover
automatically after the welding machine
is cooled.
b) Check if the thermal switch is ok.
Replace it if damaged.
The electrode holder becomes very hot.
The rated current of the electrode holder is
smaller than its actual working current. Replace
it with a bigger rated current.
Excessive spatter in MMA welding.
The output polarity connection is incorrect.
Exchange the polarity.
We are still constantly improving this welder, therefore, some parts of this welder may
be changed in order to achieve the better quality, but the main functions and operations
will not be alternated and changed. Your understanding would be greatly appreciated.
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