TROUBLESHOOTING
Continued
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY |
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ODS/pilot lights but flame | 1. Control knob not fully pressed | 1. | Press in control knob fully | ||||
goes out when control knob is |
| in | 2. | After ODS/pilot lights, keep | |||
released | 2. Control knob not pressed in | ||||||
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| long enough |
| control knob pressed in 30 | ||
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| 3. | Safety interlock system has | 3. | seconds |
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| Wait one minute for safety in- | |||||
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| been triggered |
| terlock system to reset. Repeat | ||
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| 4. | Equipment shutoff valve not | 4. | ignition operation |
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| Fully open equipment shutoff | |||||
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| 5. | fully open | 5. | valve |
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| Pilot flame not touching ther- | 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 |
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| problem could be caused by |
| Cleaning and Maintenance, | ||
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| one or both of the following: |
| page 27) 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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| 6. | ODS/pilot | 6. | Hand tighten until snug, then | ||
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| Thermocouple connection | |||||
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| 7. | loose at control valve | 7. | tighten 1/4 turn more | ||
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| Thermocouple damaged | Replace pilot assembly | ||||
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| 8. | Control valve damaged | 8. | Replace control valve | ||
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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 | 2. | Burner orifice is clogged | 2. | pane/LP gas company | |||
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| Clean burner (see | Cleaning | ||||
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| and Maintenance, | page 27) | |
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| 3. | Thermopile leads disconnected | 3. | or replace burner orifice | ||
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| Reconnect leads (see Wiring | |||||
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| or improperly connected (Re- |
| Diagram, page 28) |
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| 4. |
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| Burners will not come on in re- | 4. | Replace battery in transmitter | |||
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| mote position | ||||
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| Models Only) |
| and receiver |
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Delayed ignition of burner | 1. Manifold pressure is too low | 1. | Contact local natural or pro- | ||||
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| 2. | Burner orifice is clogged | 2. | pane/LP gas company | ||
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| Clean burner (see | Cleaning | ||||
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| and Maintenance, | page 27) | |
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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 (see Cleaning | ||||
bustion |
| damaged |
| and Maintenance, | page 27) | ||
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| 2. | Damaged burner | 2. | or replace burner orifice | ||
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| Replace damaged burner | |||||
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| 3. | Gas regulator defective | 3. | Replace gas regulator | ||
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| 4. | Inlet gas pressure is too low | 4. | Contact local natural or pro- | ||
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| pane/LP gas company | ||
30 | www.desatech.com |