Fronius TransSteel 2200 Operating Instructions Manual page 115

No welding current
Power switch is on, one of the overtemperature service codes "to" is displayed. Detailed
information on the service codes "to0" to "to6" can be found in the section
Service Codes from page 117.
Cause: Overloading
Remedy: Observe the duty cycle
Cause: Thermal automatic circuit breaker has tripped
Remedy: Wait until the power source automatically comes back on after the end of
the cooling phase
Cause: Limited supply of cooling air
Remedy: Clean the air filter, ensure accessibility to the ventilation openings - see sec-
tion Maintenance as required, at least every two months
Cause: Fan in the power source is faulty
Remedy: Contact After-Sales Service
No welding current
Power source switched on, displays illuminate
Cause: Incorrect ground connection
Remedy: Check ground connection for polarity
Cause: Power cable in welding torch damaged or broken.
Remedy: Replace welding torch
No shielding gas
All other functions are OK
Cause: Gas hose is not connected to the correct connection socket for the current
welding process
Remedy: Connect the gas hose to the correct connection socket for the current weld-
ing process
Cause: Gas cylinder empty
Remedy: Change gas cylinder
Cause: Gas pressure regulator faulty
Remedy: Replace gas pressure regulator
Cause: Gas hose is not fitted or is damaged
Remedy: Fit or change gas hose
Cause: Welding torch faulty
Remedy: Change welding torch
Cause: Gas solenoid valve faulty
Remedy: Inform service team
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