Rectifying faults
Error messages (power source)
099-005545-EW501
17.12.2020
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7.2 Error messages (power source)
A welding machine error is indicated by the collective fault signal lamp (A1) lighting up and an
error code (see table) being displayed in the machine control display. In the event of a machine
error, the power unit shuts down.
• If multiple errors occur, these are displayed in succession.
• Document machine errors and inform service staff as necessary.
Error message Possible cause
Remedy
E 0
Start signal set in the event of er-
rors
Do not press the torch trigger or the foot-opera-
ted remote control
E 4
Temperature error
Allow the machine to cool down
E 5
Mains overvoltage
Switch off the machine and check the mains vol-
tage
E 6
Mains undervoltage
E 7
Electronics error
Switch the machine off and on again.
If the error persists, notify service department
E 9
Secondary overvoltage
E12
Voltage reduction error (VRD)
E13
Electronics error
E14
Adjustment error in current record-
ing
Switch off the machine, place the electrode hol-
der in an insulated position and switch the ma-
chine back on. If the error persists, notify service
department
E15
Error in one of the electronics
supply voltages
Switch the machine off and on again.
If the error persists, notify service department
E23
Temperature error
Allow the machine to cool down
E32
Electronics error
Switch the machine off and on again.
If the error persists, notify service department
E33
Adjustment error in voltage record-
ing
Switch off the machine, place the electrode hol-
der in an insulated position and switch the ma-
chine back on. If the error persists, notify service
department
E34
Electronics error
Switch the machine off and on again.
If the error persists, notify service department
E37
Temperature error
Allow the machine to cool down
E40
Motor fault
Check wire feed mechanism,
switch the machine off and on again, inform the
service department if the fault persists.
E51
Earth fault (PE error)
Connection between welding wire and machine
casing
E55
Failure of a mains phase
Switch off the machine and check the mains vol-
tage
E58
Short circuit in welding circuit
Switch off the machine and check welding current
leads for correct installation, e.g. by placing the
electrode holder in an insulated position; detach
current lead from degaussing.