20
TROUBLESHOOTING
TROUBLESHOOTING
Continued
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
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One or both burner does not light after ODS/pilot | 1. | Inlet gas pressure is too low | 1. | Contact local natural or propane/LP gas com- |
is lit |
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| pany |
| 2. | Burner orifice(s) clogged | 2. | Clean burner(s) (see Cleaning and Mainte- |
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| nance, page 18) or replace burner orifice(s) |
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| 3. | Contact qualified service person |
| 3. | Mislocated crossover tube | 4. | Replace burner orifice(s) |
| 4. | Burner orifice(s) diameter is too small | 5. | Put remote selector in ON position |
| 5. | Remote selector in OFF position (Remote- |
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| Ready Models Only) | 6. | See Wiring Diagram, page 23 |
| 6. | Wire disconnected from gas control (Remote- |
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| Ready Models Only) |
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Delayed ignition of burner | 1. | Manifold pressure is too low | 1. | Contact local natural or propane/LP gas com- |
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| pany |
| 2. | Burner orifice(s) clogged | 2. | Clean burner(s) (see Cleaning and Mainte- |
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| nance, page 18) or replace burner orifice(s) |
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| 3. | Contact qualified service person |
| 3. | Mislocated crossover tube |
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Burner backfiring during combustion | 1. | Burner orifice is clogged or damaged | 1. | Clean burner (see Cleaning and Mainte- |
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| nance, page 18) or replace burner orifice |
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| 2. | Replace damaged burner |
| 2. | Damaged burner | 3. | Replace gas regulator |
| 3. | Gas regulator defective |
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Orange flame in burner during burner com- | 1. | Not enough air | 1. | Check burner(s) for dirt and debris. If found, |
bustion |
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| clean burner(s) (see Cleaning and Mainte- |
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| nance, page 18) |
| 2. | Gas regulator defective | 2. | Replace gas regulator |
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Slight smoke or odor during initial operation | 1. Residues from manufacturing processes and |
| logs curing |
1.Problem will stop after a few hours of opera- tion
Heater produces a whistling noise when burn- | 1. | Turning control knob to HI position when burn- | 1. | Turn control knob to LO position and let warm |
ers are lit |
| ers are cold |
| up for a minute |
| 2. | Air in gas line | 2. | Operate burners until air is removed from |
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| line. Have gas line checked by local natural |
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| or propane/LP gas company |
| 3. | Air passageways on heater blocked | 3. | Observe minimum installation clearances (see |
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| pages 7 through 10) |
| 4. | Dirty or partially clogged burner orifice(s) | 4. | Clean burners (see Cleaning and Mainte- |
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| nance, page 18) or replace burner orifice(s) |
White powder residue forming within burner box or on adjacent walls or furniture
1. When heated, vapors from furniture polish, | 1. Turn heater off when using furniture polish, |
wax, carpet cleaners, etc. turn into white | wax, carpet cleaners, or similar products |
powder residue |
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Moisture/condensation noticed on windows | 1. Not enough combustion/ventilation air | 1. Refer to Air for Combustion and Ventilation |
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| requirements (page 4) |
For more information, visit www.desatech.com
