Troubleshooting

TROUBLE	CAUSE		WHAT TO DO

I. Output control not functioning	1.	Output control switch in wrong	1.	Place switch in “Local” position.
on the machine.		position.
	2.	Faulty output control switch.	2.	Check & replace if found faulty.
	3.	Faulty output control	3.	Check & replace if found faulty.
		potentiometer.
	4.	Leads or connections open in	4.	Check lead continuity and
		control circuit.		connections for an open and
				repair if necessary.
	5.	LN-9/NA-5 switch in wrong	5.	Set to “Off” when not using an
		position.		LN-9/NA-5.
	6.	Faulty Control P.C. Board.	6.	Replace. See P.C. Board
				Troubleshooting Procedure.

J. Output control not functioning	1.	Output control switch in wrong	1.	Place switch in “Output Control
on remote control.		position.		Remote”.
	2.	Faulty output control switch.	2.	Check & replace if found faulty.
	3.	Faulty remote control	3.	Check & replace if found faulty.
		potentiometer.
	4.	Leads or connections open in	4.	Check all leads and
		control circuit.		connections, internal or remote,
				for continuity; repair if
				necessary.
	5.	Faulty Control P.C. Board.	5.	Replace. See P.C. Board
				Troubleshooting Procedure.

K. Digital meters do not light	1.	Faulty Meter P.C. Board.	1.	Replace. See P.C. Board
				Troubleshooting Procedure.
- or -
	2.	Faulty Control P.C. Board.	2.	Replace. See P.C. Board
Digital meter display is				Troubleshooting Procedure.
incorrect.
	3.	Secondary thermostat is open.	3.	See “Thermostatic Protection”
				section.

L. Poor arc striking with	1.	Poor work connection.	1.	Work connection must be
semiautomatic wire feeders.				adequate for application.
	2.	Improper procedures.	2.	Adjust procedures for improved
				starting.
	3.	Defective P.C. Board.	3.	Replace. See P.C. Board
				Troubleshooting Procedure.

– 22 –