Lincoln Electric 9919

Other manuals for Lincoln Electric 9919

Questions and Answers

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Stephen SmithAug 21, 2025
What to do if my Lincoln Electric 9919 trips off immediately when the wire feed unit start button is pressed?
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  Ricardo JonesAug 21, 2025
  If your Lincoln Electric Welding System trips off immediately when you press the wire feed unit start button, consider these possibilities: * A blown input fuse: Check for a blown fuse and replace it after identifying the cause. * An open phase in the main transformer: Inspect the main transformer for an open phase and repair it. * Faulty control or firing circuit P.C. boards: Ensure all light emitting diodes are lit on both P.C. boards, except LED4 on the control/fault board. * A defective output control potentiometer: Check the potentiometer and replace it if faulty. * Open output control potentiometer leads: Repair leads 76, 77, 226, 236, 237, 238.
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Andrew SheppardAug 23, 2025
Why does my Lincoln Electric 9919 Welding System have maximum output but no control?
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  Julie AllenAug 25, 2025
  If your Lincoln Electric Welding System has maximum output but lacks control, here are some things to check: * Output control switch (SW3) position: Make sure the switch is in the correct position. * Faulty output control switch: Check the switch and replace it if it's faulty. * Open feedback circuitry: Inspect the wiring and control and firing circuit P.C. board wiring harness plugs. * Faulty control or firing circuit P.C. boards: Verify that all light emitting diodes are lit, except LED4 on the control/fault board. * Open output control potentiometer circuit: Check and replace the potentiometer if it's faulty. Also, check the wiring of Lead #75.
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Madison WilliamsAug 26, 2025
What to do if the input contactor pulls in but immediately drops out on my Lincoln Electric 9919 Welding System?
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  James WoodAug 26, 2025
  If the input contactor of your Lincoln Electric Welding System pulls in when the start button is pressed but immediately drops out, consider these potential causes: * Defective start/stop push button: Check and replace if necessary. * Defective 1CR interlock: Repair or replace. * Ground fault between control terminals 73, 74, 75, 76 or 77 and negative output terminal: Check 73, 74, 75, 76 or 77 for a ground to the negative output circuit. * Short on output terminals with 2-4 jumpered: Remove the short. * Defective control board: Replace the control board.
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Joseph MartinAug 27, 2025
Why does my Lincoln Electric Welding System have no output when trying to weld, even though the input contactor operates?
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  James NormanAug 28, 2025
  If your Lincoln Electric Welding System's input contactor operates but there's no output when welding, check the following: * Loose or broken electrode or work lead: Repair the connection. * Open main transformer primary or secondary circuit: Repair the circuit. * Output pilot relay 4CR not operating or faulty: Check relay pull-in by connecting a jumper across terminals 2 and 4 on DC-1000 terminal strip. Replace if faulty. * Firing circuit P.C. board not connected or is faulty: All nine light emitting diodes (LED1 thru LED9) must be lit. * Open choke circuit: If using a 500 amp stud, the choke circuit may be open. Repair it.
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Brittany MoyerAug 29, 2025
How to fix a variable or sluggish welding arc on a Lincoln Electric 9919?
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  Samantha KellerAug 30, 2025
  To address a variable or sluggish welding arc on your Lincoln Electric Welding System, consider the following: * Internal or external short circuit: Check for any shorts internally and externally, and remove or repair them. * Faulty control P.C. board: Replace the control board. * Terminals grounded to negative output: Check if terminals 73, 74, 75, 76, 77 are grounded to the negative output terminal.
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wbeckerSep 1, 2025
Why is the output control not functioning on the remote control of my Lincoln Electric 9919?
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  Michelle MckaySep 1, 2025
  If the output control isn't functioning on the remote control of your Lincoln Electric Welding System, check these items: * Output control switch position: Place the switch in the “Output Control Remote” position. * Faulty output control switch: Check the switch and replace it if found faulty. * Faulty remote control potentiometer: Check and replace it if found faulty. The voltage from 75 to 77 should be 3 to 5V. * Open leads or connections: Check all leads and connections, internal or remote, for continuity. * Faulty firing or control circuit P.C. board: Repair if necessary.
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andrea66Sep 3, 2025
Why does the input contactor (1CR) chatter on my Lincoln Electric 9919 Welding System?
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  barnesjoshuaSep 3, 2025
  The input contactor (1CR) on your Lincoln Electric Welding System might be chattering due to: * A faulty input contactor (1CR): Repair or replace it. * Low line voltage: Check the input power. * A faulty 2CR relay: Repair the relay.
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Dale HornSep 5, 2025
Why is there poor starting on CV(S) Sub-Arc with my Lincoln Electric Welding System?
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  Nina PalmerSep 5, 2025
  Poor starting on CV(S) Sub-Arc with your Lincoln Electric Welding System could be due to: * Improper procedures or setting of controls. * Poor electrode or work connection: Repair connections. * Inoperative 3CR reed switch: Check reed switch voltage leads 216 to 220. Idle voltage is about 8V; when welding, voltage must go to zero. * Faulty control board: Replace.
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Morgan HendersonSep 7, 2025
What causes poor bead shape or erratic arc on CV(S) Sub-Arc with a Lincoln Electric Welding System?
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  leslieedwardsSep 8, 2025
  If you're experiencing a poor bead shape or erratic arc on CV(S) Sub-Arc with your Lincoln Electric Welding System, consider these causes: * Improper procedures. * Defective 3CR reed switch: Check the reed switch. * Faulty control board: Replace. * Defective main SCR bridge: Check and replace if defective.
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Andrea BautistaSep 9, 2025
What to do if my Lincoln Electric 9919 does not have maximum output?
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  daykimberlySep 10, 2025
  If your Lincoln Electric Welding System doesn't have maximum output, check if terminals 73, 74, 75, 76 or 77 are grounded to the positive output. If so, remove the ground.