Troubleshooting
Continued
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||||
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ODS/pilot lights but flame | 1. Control knob not fully pressed | 1. | Press in control knob fully | |||
goes out when control knob is |
| in | 2. After ODS/pilot lights, keep con- | |||
released | 2. Control knob not pressed in | |||||
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| 3. | long enough | 3. | trol knob pressed in 30 seconds | |
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| Safety interlock system has | Wait one minute for safety in- | |||
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| been triggered |
| terlock system to reset. Repeat | |
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| 4. | Equipment shutoff valve not | 4. | ignition operation | |
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| Fully open equipment shutoff | ||||
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| 5. | fully open | 5. | valve | |
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| 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 26) 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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| 6. | ODS/pilot | 6. | Hand tighten until snug, then | |
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| Thermocouple connection | ||||
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| 7. | loose at control valve | 7. | tighten 1/4 turn more | |
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| Thermocouple damaged | Replace pilot assembly | |||
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| 8. | Control valve damaged | 8. | Replace control valve | |
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One or both burners do not light | 1. Inlet gas pressure is too low | 1. | Contact local natural or pro- | |||
after ODS/pilot is lit | 2. | Burner orifice(s) clogged | 2. | pane/LP gas company | ||
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| Clean burner(s) (see Cleaning | ||||
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| and Maintenance, page 26) or | |
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| 3. | Mislocated crossover tube | 3. | replace burner orifice(s) | |
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| Contact qualified service person | ||||
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| 4. | Remote selector in OFF position | 4. | Put remote selector in ON | |
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| 5. | 5. | position | ||
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| Wire disconnected from gas control | See Wiring Diagram, page 27 | |||
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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 | ||
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| Clean burner(s) (see Cleaning | ||||
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| and Maintenance, page 26) or | |
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| 3. | Mislocated crossover tube | 3. | replace burner orifice(s) | |
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| Contact qualified service person | ||||
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| Burner backfiring during com- | 1. Burner orifice is clogged or | 1. | Clean burner (see Cleaning |
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bustion |
| damaged |
| and Maintenance, page 26) | ||
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| 2. | Damaged burner | 2. | or replace burner orifice | |
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| Replace damaged burner | ||||
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| 3. | Gas regulator defective | 3. | Replace gas regulator | |
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Yellow flame in front burner | 1. Not enough air | 1. | Check burner(s) for dirt | |||
during burner combustion |
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| and debris. If found, clean | ||
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| burner(s) (see Cleaning and | |
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| 2. | Gas regulator defective | 2. | Maintenance, page 26) | |
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| Replace gas regulator | ||||
www.desatech.com | 29 |
