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 | 3. | long enough | 3. | trol knob pressed in 30 seconds | |
| Equipment shutoff valve not | Fully open equipment shutoff | |||
| 4. | fully open | 4. | valve | |
| Pilot flame not touching ther- | 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 24) 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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| 5. | ODS/pilot | 5. | Hand tighten until snug, then | |
| Thermocouple connection | ||||
| 6. | loose at control valve | 6. | tighten 1/4 turn more | |
| Thermocouple damaged | 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 | 2. | pane/LP gas company | |
| Clean burner(s) (see Cleaning | ||||
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| and Maintenance, page 24) or | |
| 3. | Thermopile leads disconnected | 3. | replace burner orifice(s) | |
| Reconnect leads (see Wiring | ||||
| 4. | or improperly connected | 4. | Diagram, page 29) | |
| Burner will not come on in | Replace battery in transmitter | |||
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| remote position |
| and receiver | |
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Delayed ignition of one or both | 1. Manifold pressure is too low | 1. | Contact local natural or pro- | ||
burners | 2. | Burner orifice(s) clogged | 2. | pane/LP gas company | |
| Clean burner(s) (see Cleaning | ||||
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| and Maintenance, page 24) or | |
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| replace burner orifice(s) | |
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Burner backfiring during com- | 1. Burner orifice is clogged or | 1. | Clean burner (see Cleaning | ||
bustion |
| damaged |
| and Maintenance, page 24) | |
| 2. | Damaged burner | 2. | or replace burner orifice(s) | |
| Replace damaged burner | ||||
| 3. | Gas regulator defective | 3. | Replace gas regulator | |
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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 | 2. | nance, page 24) | |
| 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 | |
26 | www.desatech.com |
