Lincoln Electric LN-10 manual Problems Symptoms Recommended Course of Action

POSSIBLE

CAUSE

E-3	TROUBLESHOOTING	E-3
	Observe all Safety Guidelines detailed throughout this manual

PROBLEMS

(SYMPTOMS)

RECOMMENDED

COURSE OF ACTION

Poor arc striking with sticking or	1.	Improper procedures or techniques.
“blast-offs”, weld porosity, narrow
and ropy looking bead, or electrode	2.	Improper gas shielding.
stubbing into the plate while weld-
ing.
Tip seizes in the diffuser.	1.	Tip overheating because of prolonged
		or excessive high current and/or duty
		cycle welding.
Motor does not turn when trigger is	1.	The wire drive motor may be over-
pulled.		loaded. “Hxx” will be displayed on the
		WFS display, where “xx” is the num-
		ber of seconds until the wire drive
		attempts to run again.
	2.	A jumper plug or K1558-1 Remote
		Switch Interface Module must be
		properly installed into connector J5.
	3.	Damaged wiring in the trigger circuit.	If all recommended possible areas
			of misadjustment have been
	4.	Control p.c. board failure.	checked and the problem persists,
			Contact your local Lincoln
The drive motor does not turn	1.	Damaged leads to the drive motor.	Authorized Field Service Facility.
although arc voltage is present
and the gas solenoid is on.	2.	Damaged wire drive motor.
	3.	Damaged control p.c. board.
No control of wire feed speed.	1.	Damaged leads to the motor
Motor turns. Gas solenoid operates		tachometer.
properly and arc voltage is present.
Wire feed speed can be set on the
display, but has no control of the	2.	Damaged tachometer.
wire feed speed.
	3.	Damaged control p.c. board
Wire feed motor turns and gas sole-	1.	Power source is unable to provide arc
noid operates, but no arc voltage is		voltage because of thermal shutdown
present.		or other failure.

CAUTION

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.

LN-10