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TROUBLESHOOTING & REPAIR | |||
TROUBLESHOOTING GUIDE |
| Observe Safety Guidelines | |
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| detailed in the beginning of this manual. | |
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PROBLEMS |
| POSSIBLE AREAS OF | RECOMMENDED |
(SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION |
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| ENGINE PROBLEMS |
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The engine will not go to high idle |
| 1. Make sure the auxiliary power | 1. Check the current sensing |
when using the auxiliary power. |
| leads are tight. | toroid for loose or faulty connec- |
Auxiliary power is normal when the |
| 2. The automatic idler may not | tions. See the Wiring Diagram. |
idler switch is in the “high” position. |
| 2. Make sure leads #3 and #6A | |
Automatic idle function works prop- |
| function if the auxiliary power is | |
| loaded to less than 150 watts. | pass through the toroid twice in | |
erly when the welding terminals are |
| ||
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| opposite directions. | |
loaded. |
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| 3. The current sensing toroid may |
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| be faulty. |
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| 4. The engine protection board |
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| may be faulty. |
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The engine will not go to high idle |
| 1. Make sure the welding cables | 1. The engine protection board |
when attempting to weld or when |
| and auxiliary power lead con- | may be faulty. |
the auxiliary power is loaded. |
| nections are tight. |
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Welding output and auxiliary power |
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outputs are normal when idler |
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switch is in the “High” position. |
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The machine goes to low idle but |
| 1. Make sure there is NOT an | 1. The idler solenoid linkage may |
does not stay at low idle. |
| external load (auxiliary or weld) | be misadjusted or damaged. |
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| connected to the Commander | 2. The idler solenoid lead connec- |
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| 300. | |
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| tions (#226A and #237A) may | |
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| be loose or damaged. |
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| 3. Perform the Idler Solenoid |
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| Test. |
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| 4. The engine protection board |
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| may be faulty. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
