Troubleshooting – Lincoln Electric FLEXTEC 450 User Manual
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TROUbLESHOOTING
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FLEXTEC™ 450
Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
USING THE STATUS LED TO TROUbLESHOOT SYSTEM PRObLEMS
Errors are displayed on the user interface. In addition, there are status lights on the control pc board and the
switch pc board that contain error sequences.
Included in this section is information about the Status Lights and some basic troubleshooting charts for both
machine and weld performance.
The status lights on the main control board and the switch pc board are dual-color LED’s. Normal operation for
each is steady green.
Error
Code#
31
711
712
713
714
715
Description
Primary Over Current
Capacitor over-or-under volt-
age.
Communication error between
P.C. boards or P.C. board
fatal.
Input Power Misconnect
Supply Voltage is too high.
Input Power Misconnect
Supply Voltage is too low.
Supply Voltage to the switch
Printed Circuit Board is too
low.
Check the input power (voltage and fre-
quency). Verify the primary reconnect is
properly configured for the input voltage.
If condition persists contact an authorized
Lincoln Field Service Shop.
Check input power (voltage and frequency)
while welding. Verify the primary reconnect
is properly configured for the input voltage.
Re-trigger to recover from error.
If condition persists contact an authorized
Lincoln Field Service Shop.
Verify the primary reconnect is properly
configured for the input voltage.
If condition persists contact an authorized
Lincoln Field Service Shop.
If condition persists contact an authorized
Lincoln Field Service Shop.
Machine needs to be turned
off and back on to reset.
Machine needs to be turned
off and back on to reset.
Weld Terminals Remote:
Re-trigger to recover from
error.
Weld Terminals Local:
Toggle Remote/Local Switch
to recover from error.
Machine needs to be turned
off and back on to reset.
Machine needs to be turned
off and back on to reset.
Error Codes for the FLEXTEC™ 450
Corrective Action