Troubleshooting; Error Messages On The Displays; Vst 357/357-2, Vst 457/457-2 Power Source - Fronius VARIOSTAR 357 Mode D'emploi

TROUBLESHOOTING

Warning! Machine may only be opened up by suitably trained and skilled personnel! Before opening up the welding machine, switch it off,
unplug it from the mains and put up a warning sign to stop anybody inadvertently switching it back on again. If necessary, discharge the
electrolytic capacitors. If fuses need replacing, they must be replaced by fuses of the same rating. No warranty claims will be accepted in
respect of damage caused by the use of too high a rating of fuse.

ERROR MESSAGES ON THE DISPLAYS

The power source is equipped with a self-diagnosis system! Any errors that occur will be recognised and indicated on the displays in the form of an
error code (E00 - E99).
Error message
E02 (Error indicator lights up)
E02 (Error indicator lights up)
E40
E42
N.B.! If any other error message appears on the displays, then the fault is one that can only be put right by a service technician. Make a note of the
error message shown in the display, and of the serial number and configuration of the power source, and get in touch with our after-sales service.

VST 357/357-2, VST 457/457-2 POWER SOURCE

Fault
Machine does not function after torch
trigger is pressed
Mains switch is ON, indicators are not lit up
Machine does not function after torch
trigger is pressed
Mains switch is ON, 'Error' indicator is lit up
Machine does not function after torch
trigger is pressed
Mains switch is ON, 'Ready' indicator is lit up
Arc does not ignite after torch trigger is
pressed
'Ready' indicator is lit up, wirefeeder motor is
running
Unsteady arc, heavy spattering, weld-
metal pores
All manuals and user guides at all-guides.com
Cause
Wirefeeder-motor overcurrent: Wirefeeder-
motor is overloaded
Overtemperatur
External reset
Secondary short circuit
Cause
Break in mains supply lead, machine not plugged
into mains
Power source overheated / overloaded
Wirefeeder motor overloaded
Fuse F1, F2, F3 or F7 faulty
Control plug not plugged in
Torch faulty
Internal machine fault
Break in earth connection
Break in current cable in the welding torch
Main contactor or step switch is faulty
Step switch has not clicked into position
Operating point has not been set with optimum
values
Poor earth connection
Earthing cable is plugged into the wrong welding-
current socket
Wrong contact tube, or contact tube is worn out
16
Remedy
Check the wire inner liner, contact tube and
wire brake
Allow the machine to cool down
Check the external control
Check torch and torch lead for short-circuiting
Remedy
Check the mains supply lead; if necessary
plug the machine into the mains
Allow the machine to cool down
Check the wire inner liner, contact tube and
wire-brake adjustment
Check the fuse
Plug in the control plug
Change the torch
Contact After-Sale Service
Check the earthing cable and clamp
Change the torch
Change the main contactor or step switch
Shift the step switch to a definite position
Ensure correct relationship between welding
voltage and wirefeed speed
Ensure good contact between earthing-current
socket and workpiece
Select the correct welding-current socket
Change the contact tube