FABRICATOR 252i
PROBLEMS/SERVICE
PROBLEMS AND ROUTINE SERVICE
5-2
Manual 0-5155
ERR
24
Code Memory Fault Welder detected a fault in
program flash memory
Firmware image is corrupted. Consult an
Accredited Tweco Service Provider.
ERR
25
Nonvolatile Memory
Fault
Welder detected a fault in
parameter NVROM.
A. Welding may still be possible, but no weld
setting changes can be saved.
B. Consult an Accredited Tweco Service
Provider.
ERR
26
Unknown PCB Fault Welder control board cannot
identify an attached inverter
board and/or determine its
own identity
Consult an Accredited Tweco Service Provider.
ERR
30
Service Mode Switch
Fault
SERVICE DIP switch is
enabled
Welding is disabled while SERVICE Mode DIP
switch is enabled. Disable SERVICE Mode
switch to resume welding.
ERR
31
Controller Fault
Welder control board has
detected a hardware fault on
itself
Consult an Accredited Tweco Service Provider
if symptom recurs frequently.
ERR
33
Calibration Fault
An output (current, voltage,
or motor) fault was detected
while attempting a calibration
process
A. Check integrity of welder cables, MIG Gun
or electrode holder and retry calibration.
B. Check MIG wire spool, feedplate area for
wire feed issues, correct and retry calibration
ERR
34
User Calibration
Abort
User-initiated abort/
interruption of an active
calibration process occurred
(usually, release of trigger too
early)
Restart/reselect calibration process and retry
calibration when ready.
ERR
35
Parameter Fault
Welder control board has
detected a parameter out of
range
System Parameter re-initialization has been
automatically performed or is required
(Factory Default Reset)
Note 1: If the left display is alternate flashing "Err" and "Code" this is indicating that the fault was detected
but has either stopped occurring or is in the process of clearing itself. If this is the case, the flashing error
message will return to normal display functionality within 10 seconds unless another fault occurs. If the left
display shows a steady "Err" this is indicating that the fault is persistent and is still being detected.
Note 2: Flashing Amperage and Voltage displays (when welding) indicates that the machines maximum
output power rating (300A x 26.7V = 8kVA) is being exceeded and the system is automatically reducing the
output. If welding is ceased while the displays are flashing, the last values will be displayed for 10 seconds or
until controls are adjusted.
Table 5-1: Power Source Problems
