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The following is a partial list of possible error codes for the POWER WAVE® i400. For a complete listing consult
the Service Manual for this machine.
Error Code #
31
Primary (Input) overcurrent error.
32
Capacitor "A" under voltage
(right side facing the Switch PC Board)
33
Capacitor bank "B" under voltage
(left side facing the Switch PC Board)
34
Capacitor "A" over voltage
(right side facing the Switch PC Board)
35
Capacitor "B" over voltage
(left side facing the Switch PC Board)
36
Thermal error
37
Softstart (pre-charge) error
39
Misc. hardware fault
43
Capacitor delta error
54
Secondary (output) over current
Other
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.
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
ERROR CODES FOR THE POWER WAVE®
LECO
(FANUC#)
49
50
51
52
53
54
55
57
67
84
see com-
plete
listing
POWER WAVE® i400
–––
Excessive Primary current present. May be related to a
switch board or output rectifier failure.
Low voltage on the main capacitors. May be caused by
improper input configuration, or an open/short circuit in the
primary side of the machine.
Excess voltage on the main capacitors. May be caused by
improper input configuration, excessive line voltage, or
improper capacitor balance (see Error 43)
Indicates over temperature. Usually accompanied by
Thermal LED. Check fan operation. Be sure process does
not exceed duty cycle limit of the machine.
Capacitor precharge failed. Usually accompanied by
codes 32 and 33.
Unknown glitch has occurred on the fault interrupt circuit-
ry. Sometimes caused by primary over current fault, or
intermittent connections in the thermostat circuit.
The maximum voltage difference between the main capac-
itors has been exceeded. May be accompanied by errors
32-35. May be caused by an open or short in the primary
or secondary circuit(s).
The long term average secondary (weld) current limit has
been exceeded. This error will immediately turn off the
machine output.
NOTE: The long term average secondary current limit is
450 amps.
A complete list of error codes is available in the
Diagnostics Utility (included on the POWER WAVE®
Utilities and Service Navigator CDʼs or available at
www.powerwavesoftware.com).
Error codes that contain three or four digits are defined as
fatal errors. These codes generally indicate internal errors
on the Power Source Control Board. If cycling the input
power on the machine does not clear the error, contact the
Service Department
CAUTION
Indication
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