Rectifying faults
Checklist for rectifying faults
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099-002129-EW501
15.10.2020
Error message Possible cause
Remedy
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.
7.2 Checklist for rectifying faults
The correct machine equipment for the material and process gas in use is a fundamental
requirement for perfect operation!
Legend
Symbol
Description
Fault/Cause
Remedy
Excess temperature signal light illuminates
Excess temperature, welding machine
Allow the machine to cool down whilst still switched on
Functional errors
All machine control signal lights are illuminated after switching on
No machine control signal light is illuminated after switching on
No welding power
Phase failure > check mains connection (fuses)
Connection problems
Make control lead connections and check that they are fitted correctly.
Loose welding current connections
Tighten power connections on the torch and/or on the workpiece
Tighten contact tip correctly
7.3 Display machine control software version
The query of the software versions only serves to inform the authorised service staff. It is available in the
machine configuration menu
> see 5.12 chapter
.
7.4 Dynamic power adjustment
This requires use of the appropriate mains fuse.
Observe mains fuse specification
> see 8 chapter
!
This function enables aligning the machine to the mains connection fusing to avoid continuous tripping of
the mains fuse. The maximum power input of the machine is limited by an exemplary value for the exis-
ting mains fuse (several levels available).
You can predefine this value in the machine configuration menu
> see 5.12 chapter
using parameter
.
The selected value will be shown on the machine display
for two seconds after the machine has been
switched on.
The function automatically adjusts the welding power to an uncritical level for the mains fuse.
When using a 20-A mains fuse, a suitable mains plug has to be installed by a qualified electri-
cian.
