Tweco 250i Multi Process Welding Inverter 2RT Wire Feeder - Manual (Page 79)

PROBLEMS/SERVICE TRANSMIG 250i
Manual 0-5187 5-1 PROBLEMS AND ROUTINE SERVICE
SECTION 5: POWER SOURCE PROBLEMS AND ROUTINE SERVICE
REQUIREMENTS
5.01 Power Source Problems
Error Code CAUSE REMEDY
1 Over Temperature
Fault
OverTemp signal from
Power board indicates Over
temperature fault condition of
power components
A. Decrease duty cycle of welding activity
B. Ensure that air vents are not blocked/
obstructed
C. Consult an Accredited CIGWELD Service
Provider.
2 Input Power Fault Supply OK signal from Power
board indicates input power
voltage is out of range (too
high or too low)
A. Check input power connections and cables
for damage or improper insertion
B. Verify input voltage levels meet product
requirements
3 VBIAS Voltage Low
Fault
Controller board circuit
monitor indicates VBIAS
voltage too low
(< 13.7 VDC)
Consult an Accredited CIGWELD Service
Provider.
4 Ground Fault Excessive current detected
on Ground wire of power
connection
A. Isolate welder chassis from work piece.
Check workpiece ground connection.
B. Check for MIG wire feed problem in spool/
feedplate. Verify wire is not contacting
chassis.
8 Input Sensor Fault Unexpected reading of voltage
or current sensor during
power-up sef test
A. Inspect ribbon cable between power supply
and display board.
B. Consult an accredited CIGWELD service
provider.
9 Fan Fault Cooling Fan Failure detected
on Inverter board
A. Examine fan vents for potential obstruction.
B. Consult an Accredited CIGWELD Service
Provider.
10 Inverter Output Fault Substandard output voltage
condition detected by
controller before weld started
Consult an Accredited CIGWELD Service
Provider.
11 VRD Fault Insufficient Voltage for
electrode contact detection by
controller
A. Check all welding cable connections, cable
and MIG Torch/electrode holder integrity.
Remove any potential short circuits before
restoring power.
B. Consult an Accredited CIGWELD Service
Provider.
14 Trigger Fault Fault occurred detecting
trigger state/condition
A. Trigger may be already activated when MIG
process mode is selected - verify that trigger
is not accidentally activated
B. Trigger may be faulty and/or dirty, test and
replace MIG Torch/trigger device