Lincoln Electric IM10057 POWER WAVE STT MODULE (CE) - Manual (Page 24)

E-4 TROUBLESHOOTING E-4
POWER WAVE ® STT ® MODULE (CE)
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
STT ® MODULE
ERROR CODES FOR THE STT ® MODULE
The following is a partial list of possible error codes for the STT ® MODULE.
Error Code #
36 Thermal error
39 Misc. hardware fault
99 STT Status error
Other
Indication
Indicates over temperature. Usually accompanied by Thermal LED.
Check fan operation. Be sure process does not exceed duty cycle limit
of the machine.
Unknown glitch has occurred on the fault interrupt circuitry. Sometimes
caused by primary over current fault, or intermittent connections in the
thermostat circuit.
Error reported by the STT ® Switch PC Board.
Generally caused by misconnection of welding leads (reverse polarity).
May also be caused by loss of input voltage or board failure. Observe
diagnostic LEDʼs on the STT
® Switch PC Board to determine the exact
cause.
A complete list of error codes is available in the Power Wave Manager
Utility (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 STT
® Module
Status PC Board. If cycling the input power on the machine does not
clear the error, contact the Service Department.