Rectifying faults
Checklist for rectifying faults
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099-002061-EW501
05.05.2020
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Rectifying faults
All products are subject to rigorous production checks and final checks. If, despite this, something fails to
work at any time, please check the product using the following flowchart. If none of the fault rectification
procedures described leads to the correct functioning of the product, please inform your authorised dea-
ler.
7.1 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
Polarity switching at the welding machine control is not working
The changeover switch at the remote control defines the welding current polarity. Unplug remo-
te control or set parameter rCD (machine configuration) to the value off.
Polarity switching at the remote control is not working
Set parameter rCD (machine configuration menu) to the value on.
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
Overheating of TIG welding torch (tungsten electrode) when remote control is connected
RT PWS1 19POL
Welding current polarity setting not suitable
Set changeover switch for welding current polarity to (-) position.
7.2 Error messages (power source)
Depending on the options of the machine display, a fault is shown as follows:
Display type - machine control
Display
Graphic display
two 7-segment displays
one 7-segment display
The possible cause of the fault is signalled by a corresponding fault number (see table). In the case of an
error, the power unit shuts down.
The display of possible error numbers depends on the machine version (interfaces/functions).
