TROUBLESHOOTING | ||
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| Observe all Safety Guidelines detailed throughout this manual |
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TROUBLESHOOTING GUIDE
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS |
| POSSIBLE |
| RECOMMENDED | |
(SYMPTOMS) |
| CAUSE |
| COURSE OF ACTION | |
| OUTPUT PROBLEMS |
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Thermal LED is lit. | 1. Fan thermostat has opened. |
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| Check for proper fan operation. |
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| (Fan should run whenever out- |
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| put power is on.) Check for |
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| material blocking intake or |
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| exhaust louvers, or for excessive |
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| dirt clogging cooling channels in |
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| machine. Blow air in rear louvers |
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| to remove dirt around the fan. |
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| 2. Secondary rectifier or Choke |
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| thermostat has opened. After |
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| machine has cooled, reduce |
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| load, duty cycle, or both. Check |
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| for material blocking intake or |
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| exhaust louvers. |
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| 3. DC Bus PC board thermostat |
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| has opened check for excessive |
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| load on 40VDC supply. |
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Machine won’t weld, can’t get any | 1. Input voltage is too low or too | If all recommended possible areas | |||
output. | high. Make certain that input | ||||
| voltage is proper, according to | of misadjustments have been | |||
| the Rating Plate located on the | checked and the problem persists, | |||
| rear of the machine. |
| contact your local Lincoln | ||
| 2. If the Thermal LED is also lit, | Authorized Field Service Facility. | |||
| see “Yellow Thermal LED is Lit” |
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| section. |
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| 3. Primary current limit has been |
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| exceeded. Possible short in out- |
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| put circuit. Turn machine off. |
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| Remove all loads from the out- |
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| put of the machine. Turn back |
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| on. If condition persists, turn |
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| power off, and contact an autho- |
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| rized | Lincoln | Electric | Field |
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| Service facility. |
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| 4. This problem will normally be |
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| accompanied by an error code. |
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| Error codes are displayed as a |
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| series of red and green flashes by |
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| the | status | light. | See |
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| "Troubleshooting the Power Wave |
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/Power Feed System Using the Status LED" section of this text.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con- tact your local authorized Lincoln Electric Field Service Facility for technical assistance.