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10.3 Troubleshooting Chart
For errors, self-diagnosis is not available
refer to the Troubleshooting chart.
In case of failure of peripheral components,
contact Panasonic representatives for repair
parts.
Check points
Cable: Break
Input power cable
Connection (input terminal): Looseness
This unit
Power switch: OFF, Trip
Mail valve: Closed
Gas cylinder
Gas: Shortage (No)
Gas regulator
Pressure, flow rate: Wrong settings
Connection: Looseness
Gas hose: damage
Gas hose
Connection: Looseness
Feed roller, Wire guide: Wrong wire diameter
Feed roller: Crack, Groove clogging
Wire feeder
Pressure rod: Improper settings
Wire guide: wire dust buildup
Breaks (for power and for torch switch)
Poor connection to wire feeder
Torch cable
Trace of heavy drop
Cable: piled coils, sharp bending
Tip, Liner: Wrong wire diameter, abrasion,
clogging, deform
Welding torch
Tip, Nozzle, Insulation tube: Looseness
Poor connection to wire feeder
Cable size: Insufficient (cross section area)
Base metal cable
Connection: Looseness
Insufficient current supply to the base metal
Welding current, welding voltage, torch angle,
speed, wire extension, etc.
Welding conditions
Waveform control, pulse characteristics: signifi-
cant deviation.
Base metal surface
Oil, dirt, rust, attachment of coating film
WMD078TE0PAA07
(O: Target check points.)
Wire runs into the base metal
Bead turns black
Unstable arc
Poor arc start
No wire feeding
No gas supply
No arc
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
10. Troubleshooting
Blowholes
Welded tip
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
135
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Table of Contents
Troubleshooting
