Fronius TTB 80 G Instructions De Service page 58

No shielding gas
All other functions present
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Poor-quality weld properties
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Welding torch gets very hot
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58
Gas cylinder empty
Change gas cylinder
Gas pressure regulator faulty
Replace gas pressure regulator
Gas hose kinked, damaged, or not attached
Attach and straighten gas hose. Replace faulty gas hose
Welding torch faulty
Replace welding torch
Gas solenoid valve faulty
Contact service team (have gas solenoid valve replaced)
Incorrect welding parameters
Check settings
Incorrect ground connection
Check ground connection and terminal for polarity
Welding torch is inadequately dimensioned
Observe duty cycle and load limits
For water-cooled systems only: Coolant flow too low
Check water level, water flow rate, water contamination, etc. Coolant pump
blocked: Switch on shaft of coolant pump at the gland using a screwdriver
For water-cooled systems only: "Cooling unit Ctrl" parameter is set to
"OFF".
In the Setup menu, set the "Cooling unit Ctrl" parameter to "Aut" or "ON".