TROUBLESHOOTING
Continued
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
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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 | 2. | After ODS/pilot lights, keep |
released |
| long enough |
| control knob pressed in 30 |
| 3. | Equipment shutoff valve not |
| seconds |
| 3. | Fully open equipment shutoff | ||
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| fully open |
| valve |
| 4. | Thermocouple connection | 4. | Hand tighten until snug, then |
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| loose at control valve |
| tighten 1/4 turn more |
| 5. | Pilot flame not touching ther- | 5. | 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 |
| Cleaning and Maintenance, |
|
| problem could be caused by |
| page 15) or replace ODS/pilot |
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| one or both of the following: |
| assembly |
A)Low gas pressure
B)Dirty or partially clogged ODS/pilot
| 6. | Thermocouple damaged | 6. | Replace pilot assembly |
| 7. | Control valve damaged | 7. | Replace control valve |
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Burner does not light after | 1. Burner orifice is clogged | 1. | Clean burner orifice (see Clean- | |
ODS/pilot is lit |
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| ing and Maintenance, page 15) |
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| or replace burner orifice |
| 2. | Inlet gas pressure is too low | 2. | Contact local natural or pro- |
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| pane/LP gas company |
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| |
Delayed ignition of burner | 1. Manifold pressure is too low | 1. | Contact local natural or pro- | |
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| pane/LP gas company |
| 2. | Burner orifice is clogged | 2. | Clean burner orifice (see Clean- |
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| ing and Maintenance, page 15) |
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| or replace burner orifice |
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Burner backfiring during com- | 1. Burner orifice is clogged or | 1. | Clean burner orifice (see Clean- | |
bustion |
| damaged |
| ing and Maintenance, page 15) |
| 2. | Burner damaged |
| or replace burner orifice |
| 2. | Replace burner | ||
| 3. | Gas regulator defective | 3. | Replace gas regulator |
www.desatech.com | 17 |