DESA INTERNATIONAL
UNVENTED NATURAL GAS FIREPLACE
TROUBLESHOOTING
Continued
| OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | |||
| Burner does not light after ODS/pilot is lit | 1. | Burner orifice clogged | 1. | Clean burner (see Cleaning and Mainte- | |
|
|
|
|
| nance, page 21) or replace burner orifice | |
|
| 2. | Inlet gas pressure is too low | 2. | Contact local natural gas company | |
|
| 3. | Burner orifice diameter is too small | 3. | Replace burner orifice | |
|
| 4. | Thermopile leads disconnected or im- | 4. | Reconnect leads (see Wiring Diagram, | |
|
|
| properly connected |
| page 20) | |
|
| 5. | Burners will not come on in remote po- | 5. | Replace battery in transmitter and re- | |
|
|
| sition |
| ceiver | |
|
|
|
|
|
|
|
| Delayed ignition burner | 1. | Manifold pressure is too low | 1. | Contact local natural gas company | |
|
| 2. | Burner orifice clogged | 2. | Clean burner (see Cleaning and Mainte- | |
|
|
|
|
| nance, page 21) or replace burner orifice | |
|
|
|
|
|
|
|
| Burner backfiring during combustion | 1. | Burner orifice is clogged or damaged | 1. | Clean burner (see Cleaning and Mainte- | |
|
|
|
|
| nance, page 21) or replace burner orifice | |
|
| 2. | Damaged burner | 2. | Replace damaged burner | |
|
| 3. | Gas regulator defective | 3. | Replace gas control | |
|
|
|
|
|
|
|
| Slight smoke or odor during initial operation | 1. | Not enough air | 1. | Check burner for dirt and debris. If | |
|
|
|
|
| found, clean burner (see Cleaning and | |
|
|
|
|
| Maintenance, page 21) | |
|
| 2. | Gas regulator defective | 2. | Replace gas control | |
|
| 3. | Residues from manufacturing processes | 3. | Problem will stop after a few hours of | |
|
|
| and logs curing |
| operation | |
|
|
|
|
|
|
|
| Moisture/condensation noticed on windows | 1. | Not enough combustion/ventilation air | 1. | Refer to Air for Combustion and Venti- | |
|
|
|
|
| lation requirements (page 4) | |
|
|
|
|
|
|
|
| Heater produces a whistling noise when | 1. | Turning control knob to HI position | 1. | Turn control knob to LO position and | |
| burner is lit |
| when burner is cold |
| let warm up for a minute | |
|
| 2. | Air in gas line | 2. | Operate burner until air is removed from | |
|
|
|
|
| line. Have gas line checked by local | |
|
|
|
|
| natural gas company | |
|
| 3. | Air passageways on heater blocked | 3. | Observe minimum installation clear- | |
|
|
|
|
| ances (see pages 8 through 10) | |
|
| 4. | Dirty or partially clogged burner orifice | 4. | Clean burner (see Cleaning and Mainte- | |
|
|
|
|
| nance, page 21) or replace burner orifice | |
|
|
|
|
|
|
|
White powder residue forming within burner box or on adjacent walls or furniture.
1.When heated, vapors from furniture pol- ish, wax, carpet cleaners, etc. turn into white powder residue.
1.Turn heater off when using furniture pol- ish, wax, cleaners, or similar products.
18 | 104352 |