TROUBLESHOOTING
Continued
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
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ODS/pilot lights but flame | 1. Control knob not fully pressed in | 1. | Press in control knob fully | |
goes out when control knob is | 2. Control knob not pressed in | 2. | After ODS/pilot lights, keep con- | |
released |
| long enough |
| trol knob pressed in 30 seconds |
| 3. | Equipment shutoff valve not | 3. | Fully open equipment shutoff |
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| fully open |
| valve |
| 4. | Pilot flame not touching ther- | 4. | A) Contact local natural or |
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| mocouple, which allows ther- |
| propane/LP gas company |
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| mocouple to cool, causing |
| B) Clean ODS/pilot (see |
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| pilot flame to go out. This |
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| problem could be caused by |
| Cleaning and Maintenance, |
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| one or both of the following: |
| page 21) or replace ODS/pilot |
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| A) Low gas pressure |
| assembly |
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| B) Dirty or partially clogged |
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| ODS/pilot |
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| 5. | Thermocouple connection | 5. | Hand tighten until snug, then |
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| loose at control valve |
| tighten 1/4 turn more |
| 6. | Thermocouple damaged | 6. | Replace pilot assembly |
| 7. | Control valve damaged | 7. | Replace control valve |
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Burner does not light after | 1. Inlet gas pressure is too low | 1. | Contact local natural or pro- | |
ODS/pilot is lit | 2. | Burner orifice(s) clogged |
| pane/LP gas company |
| 2. | Clean burner(s) (see Cleaning | ||
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| and Maintenance, page 21) or |
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| replace burner orifice |
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Delayed ignition of burner | 1. Manifold pressure is too low | 1. | Contact local natural or pro- | |
| 2. | Burner orifice(s) clogged |
| pane/LP gas company |
| 2. | Clean burner(s) (see Cleaning | ||
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| and Maintenance, page 21) or |
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| replace burner orifice |
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Burner backfiring during com- | 1. Burner orifice is clogged or | 1. | Clean burner (see Cleaning | |
bustion |
| damaged |
| and Maintenance, page 21) |
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| or replace burner orifice |
| 2. | Damaged burner | 2. | Replace damaged burner |
| 3. | Gas regulator defective | 3. | Replace gas control |
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Slight smoke or odor during | 1. Not enough air | 1. | Check burner for dirt and | |
initial operation |
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| debris. If found, clean burner |
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| (see Cleaning and Mainte- |
| 2. | Gas regulator defective |
| nance, page 21) |
| 2. | Replace gas control | ||
| 3. | Residues from manufacturing | 3. | Problem will stop after a few |
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| processes and logs curing |
| hours of operation |
24 | www.desatech.com |