
TROUBLE- SHOOTING
OBSERVED | POSSIBLE | REMEDY |
PROBLEM | CAUSE | |
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Continued
Burner does not light after ODS/pilot is lit
1.Burner orifice is clogged
2.Burner orifice diameter is too small
3.Inlet gas pressure is too low
1.Clean burner orifice (see Cleaning and Mainte- nance, page 20) or replace burner orifice
2.Replace burner orifice
3.Contact local natural gas company
Delayed ignition of | 1. | Manifold pressure is | 1. | Contact local natural gas |
burner |
| too low |
| company |
| 2. | Burner orifice is | 2. | Clean burner orifice (see |
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| clogged |
| Cleaning and Mainte- |
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| nance, page 20) or |
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| replace burner orifice |
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Burner backfiring | 1. | Burner orifice is | 1. | Clean burner orifice (see |
during combustion |
| clogged or damaged |
| Cleaning and Mainte- |
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| nance, page 20) or |
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| replace burner orifice |
| 2. | Burner damaged | 2. | Replace burner |
| 3. | Gas regulator defective | 3. | Replace gas regulator |
Yellow flame during burner combustion
1.Not enough air
2.Inlet gas pressure is too low
3.Gas regulator defective
1.Check burner for dirt and debris. If found, clean burner (see Cleaning and Mainte- nance, page 20)
2.Contact local natural gas company
3.Replace gas regulator
22
Slight smoke or odor | 1. | Residues from manu- | 1. | Problem will stop after a |
during initial operation |
| facturing processes |
| few hours of operation |
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Heater produces a | 1. | Turning control knob | 1. | Turn control knob to |
whistling noise when |
| to HIGH position |
| LOW position and let |
burner is lit |
| when burner is cold |
| warm up for a minute |
| 2. | Air in gas line | 2. | Operate burner until air |
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| is removed from line. |
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| Have gas checked by |
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| local natural gas company |
| 3. | Air passageways on | 3. | Observe minimum |
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| heater blocked |
| installation clearances |
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| (see Figure 4, page 10) |
| 4. | Dirty or partially | 4. | Clean burner (see |
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| clogged burner orifice |
| Cleaning and Mainte- |
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|
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| nance, page 20) or |
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| replace burner orifice. |
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