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15
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7.2 Trouble shooting
Table 9 Trouble shooting
Serial
number
Troubles
Possible causes
Solutions
1
Indicator light is not on after
switching on power.
1. Damage to air switch on
back panel
2. Fuse broke
1. Change air switch
2. Change fuse
2
When the power is switched
on, the air switch shuts off.
1. Air switch is broken
2. IGBT is broken
3. 3-phase commutate bridge
broke
4. Controlling panel is broken
1. Change air switch
2. Change IGBT
3. Change 3-phase
commutate bridge
4. Change controlling
panel
3
When welding,ampere meter
display E01
1.For a long time overload
running
1.According to the welding
machine duty cycle to use
4
Cannot adjust welding
current
1. Wire feeder control cable
breaks or control PCB is
damaged.
2. The connection wire of
current divider is broken.
3. Controlling panel of the
welder broke.
1. Change wire feeder
control cable or PCB.
2. Reconnect the lines
3. Change control panel of
the welder.
5
Unstable arc, big splash
1. Wrong procedure
2. Badly worn nozzle
1. Correct procedure
2. Change nozzle
6
Heating pressure reducing
flow meter won’t heat up
1. Heating pressure reducing
flow meter is broken
2. Short circuit
3. Broken fuse
4. No output from welder
1. Change heating pressure
reducing flow meter
2. Fix the heating cable
3. Change 8A fuse
4. Check if there is output
from welder.
