ESAB Warrior 400, Instruction Manual

Page: 19 / 26

7 FAULT TRACING
0463 362 001 - 19 - © ESAB AB 2013
7 FAULT TRACING
Try these recommended checks and inspections before sending for an authorized service
technician.
Type of fault Corrective action
No arc. • Check that the mains power supply switch
is turned on.
• Check that the mains, welding and return
cables are correctly connected.
• Check that the correct current value is
set.
• Check the mains power supply fuses.
The welding current is interruppted during
welding. • Check whether the overloading protection
has deployed (indicated on the front).
• Check the mains power supply fuses.
• Check that the return cable is correctly
fastened.
The overheating protection trips frequently. • Make sure that you are not exceeding the
rated data for the power source (i.e. that
the unit is not being overloaded).
Poor welding performance. • Check that the welding and return cables
are correctly connected.
• Check that the correct current value is
set.
• Check that the correct wire or electrode is
used.
• Check the mains power supply fuses.
• Check the gas pressure in the equipment
connected to the power source.
"Err" on display in open circuit mode • Check the mains power supply fuses.
• Check that the voltage on the voltage
selection label on the rear of the power
source is equal to the nominal mains
voltage.
• Restart the power source with the main
switch