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. | Pilot flame not touching ther- | 4. | 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 |
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| pilot flame to go out. This |
| B) Clean ODS/pilot (see |
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| problem could be caused by |
| Cleaning and Maintenance, |
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| one or both of the following: |
| page 25) or replace ODS/pilot |
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| A) Low gas pressure |
| assembly |
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| B) Dirty or partially clogged |
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| ODS/pilot |
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| 5. | Thermocouple connection | 5. | Hand tighten until snug, then |
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| loose at control valve |
| tighten 1/4 turn more |
| 6. | Thermocouple damaged | 6. | Replace pilot assembly |
| 7. | Control valve damaged | 7. | Replace control valve |
| 8. | Safety interlock system has | 8. | Wait one minute for safety in- |
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| been triggered |
| terlock system to reset. Repeat |
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| ignition operation. |
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Burner does not light after | 1. Inlet gas pressure is too low | 1. | Contact local natural or pro- | |
ODS/pilot is lit |
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| pane/LP gas company |
| 2. | Burner orifice(s) clogged | 2. Clean burner(s) (see Cleaning | |
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| and Maintenance, page 25) |
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| or replace burner orifice(s) |
| 3. | Thermopile leads disconnect- | 3. | Reconnect leads (see Wiring |
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| ed or improperly connected |
| Diagram, page 26) |
| 4. | Burner will not come on in | 4. | Replace battery in transmitter |
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| remote position |
| and receiver |
| 5. | Wire disconnected from gas con- | 5. | See Wiring Diagram, page 26 |
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| trol (Remote ready models only) |
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Delayed ignition of one or both | 1. Manifold pressure is too low | 1. | Contact local natural or pro- | |
burners | 2. | Burner orifice(s) clogged |
| pane/LP gas company |
| 2. | Clean burner(s) (see Cleaning | ||
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| and Maintenance, page 25) or |
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| replace burner orifice(s) |
| 3. | Mislocated crossover tube | 3. | Contact qualified service person |
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Burner backfiring during com- | 1. Burner orifice is clogged or | 1. | Clean burner (see Cleaning | |
bustion |
| damaged |
| and Maintenance, page 25) |
| 2. | Damaged burner |
| or replace burner orifice(s) |
| 2. | Replace damaged burner | ||
| 3. | Gas regulator defective | 3. | Replace gas regulator |
28 | www.desatech.com |
