Download TROUBLESHOOTING AND REPAIR - Red-D

F-9
F-9
TROUBLESHOOTING & REPAIR
FAULT CODES
31
DESCRIPTION/
CORRECTIVE
DEFINITION
ACTION
Main transformer
primary over current
Turn the machine off and
back on to reset the
machine. If condition
persists, contact an
authorized Lincoln Field
Service Facility.
SERVICE FACILITY
CORRECTIVE
ACTION
Perform the Main Switch
Board Test.
Perform the Power
Board Test.
There may be a problem
with the primary current
sensors (CT) located on
the main switch board.
See the Wiring diagram
The control board may
be faulty.
32
Capacitor bank “A”
(lower) is under
voltage
Make sure the reconnect
switches are configured
for the input voltage
being applied to the
machine. The machine
is self clearing when
condition ceases.
There may be a problem
with the V/F signals from
the main switch board to
the control board.
Perform the Main Switch
Board Test.
Perform the Power
Board Test.
The control board may
be faulty.
NOTE: If more than one fault message is being displayed, perform all the checks for the faults
before replacing the printed circuit board
V350-PRO