Lincoln Electric POWER WAVE STT Operator's Manual page 22

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POWER WAVE

STT

MODULE

Error Code #

Thermal error

Misc. hardware fault

STT Status error

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.

Observe all Safety Guidelines detailed throughout this manual

ERROR CODES FOR THE STT

The following is a partial list of possible error codes for the STT

STT

Indicates over temperature. Usually accompanied by Thermal LED. Check fan opera-

tion. 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

Generally caused by misconnection of welding leads (reverse polarity). May also be

caused by loss of input voltage or board failure. Observe diagnostic LED's 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 (avail-

able 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

input power on the machine does not clear the error, contact the Service

Department.

MODULE

Indication

Switch PC Board.

CAUTION

E-4

TROUBLESHOOTING

MODULE.

Module Status PC Board. If cycling the

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