1. Power Indicator is not lit,
cooling fan doesn’t run,
machine has no output.
1. Power switch is faulty
2. Check if electrical wire nut, which is connected to input cable,
is clean and tight.
3. Check if input cable is damaged or power source is faulty.
2. Power indicator is lit, fan
doesn’t work, machine has no
output
1. Verify power source is 220V
2. 220V power is not stable. Input cable is too small in diameter or
input cable is not connected to electrical wire nut, causing the
machine to trigger the protection circuit. Add the section of
cable and tighten input connector firmly.
3. Cable is loose from switch to power panel, check and tighten
as needed.
4. Opening and closing the power switch constantly in a short
time causes the machine to trigger the protection circuit. Close
machine and wait 2-3 minutes before opening again.
3. Fan is working, indicator is
not lit and sound of HF arc-
striking cannot be heard,
unable to strike arc on welding
surface.
1. There is a green indicator for auxiliary power on the MOS
board, if it is not on auxiliary power it should be checked.
2. Check if connectors have poor contact.
3. Check controls and verify settings on control panel are correct.
4. Check if control cable for the torch is broken or damaged.
4. Abnormal indicator is not on,
sound of HF arc-striking can be
heard, but there is no welding
output.
1. Check if torch cable is broken or damaged.
2. Check if grounding cable is broken or not connected to welding
piece.
3. Output terminal of positive electrode or torch electrical eyelet is
loose from inter-machine.
5. Abnormal indicator is not lit,
sound of HF arc-striking cannot
be heard, cannot strike arc.
1. Primary cable of arc-striking transformer is not connected to
power panel firmly, tighten it again.
2. Arc-striking tip is oxidized or too far away, check electrode tip
and air gap.
3. Control Switch (Stick / Tig welding) is damaged, or in wrong
position.
6.When welding aluminum,
cannot break oxidized film
1. Wrong welding value
2. Pulse duty too low
Pulse duty is too high, reduce it.
1-800-345-4545 jegs.com
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