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TROUBLESHOOTING AND REPAIR |
Observe all Safety Guidelines detailed throughout this manual.
PROBLEMS | POSSIBLE AREAS OF |
| RECOMMENDED | ||||
(SYMPTOMS) | MISADJUSTMENT(S) |
| COURSE OF ACTION | ||||
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FUNCTION PROBLEMS (Continued) |
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The “Cold Feed Forward” and/or | 1. | Check the connectors and wires | 1. | Perform the Keypad Resis- | |||
the “Cold Feed Reverse” buttons |
| between the display board and |
| tance Test. | |||
do not function properly. The motor |
| the control board for loose or |
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operates properly in other modes. |
| faulty connections. (J11 and J3) | 2. | The display board may be | |||
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| faulty. |
| 2. | Check | the connector | J10 |
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| between the keypad and the | 3. | The control board may be | |||
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| display | board | for | loose |
| faulty. |
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| connections. |
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The “Gas Purge” button does not | 1. | Check the connectors and wires | 1. | Perform the Keypad Resis- | |||
activate the gas solenoid. The gas |
| between the display board and |
| tance Test. | |||
solenoid operates properly in other |
| the control board for loose or |
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| |||
modes. |
| faulty connections. (J11 and J3) | 2. | The display board may be | |||
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| faulty. |
| 2. | Check | the connector | J10 |
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| |
|
| between the keypad and the | 3. | The control board may be | |||
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| display | board | for | loose |
| faulty. |
|
| connections. |
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The “Procedure” button does not | 1. | Check the connectors and wires | 1. | Perform the Keypad Resis- | |||
function properly. |
| between the display board and |
| tance Test. | |||
|
| the control board for loose or |
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| |||
|
| faulty connections. (J11 and J3) | 2. | The display board may be | |||
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| faulty. |
| 2. | Check | the connector | J10 |
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| |
|
| between the keypad and the | 3. | The control board may be | |||
|
| display | board | for | loose |
| faulty. |
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| connections. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call