TROUBLESHOOTING | DFX & DBX Series Vent Free Fireplaces |
WARNING
If the gas quality is bad, your pilot may not stay lit, the burners may produce soot and the heater may backfire when lit. If the gas quality or pressure is low, contact your local gas supplier immediately.
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
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 long | 2. | After ODS/pilot lights, keep control | |
released. |
| enough. |
| knob pressed in for 30 seconds. |
| 3. | Manual shutoff valve not fully open. | 3. | Fully open manual shutoff valve. |
| 4. | Thermocouple connection loose at control | 4. | Hand tighten thermocouple connec- |
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| valve. |
| tion until snug, then tighten 1/4 turn |
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| more. |
| 5. | Pilot flame not touching thermocouple, | 5a.Contact local gas company. | |
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| which allows thermocouple to cool, caus- | 5b.Clean pilot with vacuum cleaner. | |
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| ing pilot flame to go out. This problem could |
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| be caused by either low gas pressure, or a |
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| dirty or partially clogged ODS/pilot. | 6. | Replace thermocouple. |
| 6. | Thermocouple damaged. | ||
| 7. | Control valve damaged. | 7. | Replace control valve. |
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Burner does not light after ODS/ | 1. | Burner orifice is clogged. | 1. | Clean orifice. |
pilot is lit. | 2. | Burner orifice diameter is too small. | 2. | Replace burner orifice. |
| 3. | Inlet gas pressure is too low. | 3. | Contact qualified service person. |
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Burner backfires during com- | 1. Manifold pressure is too low. | 1. | Contact local gas company. | |
bustion. | 2. | Burner orifice is clogged. | 2. | Clean burner or replace burner ori- |
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| fice. |
Slight smoke or odor during | 1. Burner orifice is clogged or damaged. | 1. | Clean burner or replace burner ori- | |
initial operation. | 2. | Burner is damaged. |
| fice. |
| 3. | Gas regulator defective. | 2. | Replace burner. |
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| 3. | Replace gas regulator. |
Logs appear to smoke after initial operation.
1.Vapors from paint or curing process of logs.
2.Vapors or smoke continue after heater has run with damper or window open for several hours.
1.Problem will stop after a few hours of operation. Run the heater with the damper open if you have one, or open a window for the first few hours.
2.Log heater is intended to be smoke- less. Turn OFF heater and call quali- fied service person.
Heater produces a whistling 1. | Turning control knob to HIGH position |
noise when burner is lit. | when burner is cold. |
2. | Air in gas line. |
3. Dirty or partially clogged burner orifices.
1.Turn control knob to LOW position and let warm up for a minute.
2.Operate burner until air is removed from line. Have gas line checked by local gas company.
3.Clean burner or replace burner ori- fice.
No gas to pilot. | 1. |
| sure too high. |
1.Verify LP tank regulator is installed and set at 11" to 13" w.c.
2.Replace regulator on heater.
33D4047 | 27 |
