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| TROUBLESHOOTING & REPAIR | |
| TROUBLESHOOTING GUIDE | Observe Safety Guidelines |
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| detailed in the beginning of this manual. |
FUNCTION PROBLEMS | POSSIBLE AREAS OF |
| RECOMMENDED | ||||||
(SYMPTOMS) | MISADJUSTMENT(S) |
| COURSE OF ACTION | ||||||
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| FUNCTION PROBLEMS |
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No or low output. Error code “E11” | 1. “E11” is an indication that the | 1. If the correct input voltage | |||||||
is flashing on the digital display. |
| input voltage being applied is |
| 230VAC or 115VAC is being | |||||
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| too high. Check for the correct |
| applied to the machine the Input | |||||
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| input voltage. | 230VAC | or |
| Filter Board may be faulty. | |||
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| 115VAC. |
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| Perform the Input Filter Board | |
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| Test. |
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| 2. The Main IGBT Inverter Board | ||
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| May be Faulty. Perform the | |
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| Main IGBT Inverter Board Low | |
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| Voltage Supply Test. | |
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No or low output. Error code | 1. | “E12” is an indication that the | 1. | If the correct input voltage | |||||
“E12” is flashing on the digital dis- |
| input voltage being applied is |
| 230VAC or 115VAC is being | |||||
play. |
| too low. Check for the correct |
| applied to the machine, the | |||||
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| input voltage. 230VAC or |
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| Input Filter Board may be | ||||
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| 115VAC. |
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| faulty. Perform the Input Filter | |
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| Board Test. | |
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| 2. The Main IGBT Inverter Board | ||
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| May be Faulty. Perform the | |
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| Main IGBT Inverter Board | |
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| Low Voltage Supply Test. | |
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No output. Error code “E10” is | 1. | The welding application may be | 1. | One of the thermal devices may | |||||
flashing on the digital display. The |
| exceeding | the | recommended |
| be faulty. | Check and replace if | ||
thermal indicator light is on. |
| duty cycle. |
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| necessary. | See the Wiring |
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| Diagram. |
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| 2. Dirt and dust may have clogged |
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| the cooling channels inside the | 2. The Main IGBT Inverter Board | ||||||
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| machine. | Refer | to | the |
| may be faulty. | ||
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| Maintenance Section | in | this |
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| manual. |
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| 3. The air intake and exhaust lou- |
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| vers may be blocked due in |
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| inadequate | clearance | around |
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| the machine. |
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| 4. Make sure the cooling fan is |
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| operating correctly. |
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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, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
