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 con- | |||
released | 3. | long enough | 3. | trol knob pressed in 30 seconds | ||
| Equipment shutoff valve not | Fully open equipment shutoff | ||||
| 4. | fully open | 4. | valve |
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| Pilot flame not touching ther- | A) Contact local gas com- | ||||
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| mocouple, which allows ther- |
| pany |
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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 16) 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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| 5. | ODS/pilot | 5. | Hand tighten until snug, then | ||
| Thermocouple connection | |||||
| 6. | loose at control valve | 6. | tighten 1/4 turn more | ||
| Thermocouple damaged | Replace pilot assembly | ||||
| 7. | Control valve damaged | 7. | Replace control valve | ||
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Burner does not light after | 1. Burner orifice clogged | 1. | Clean burner (see Cleaning | |||
ODS/pilot is lit |
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| and Maintenance, | page 16) | |
| 2. | Inlet gas pressure is too low | 2. | or replace burner orifice | ||
| Contact local gas company | |||||
| 3. | Thermopile leads disconnect- | 3. | Reconnect leads (see wiring | ||
| 4. | ed or improperly connected | 4. | diagram) |
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| Burners will not come on in | Replace battery in transmitter | ||||
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| remote position |
| and receiver |
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Delayed ignition burner | 1. Manifold pressure is too low | 1. | Contact local gas company | |||
| 2. | Burner orifice clogged | 2. | Clean burner (see | Cleaning | |
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| and Maintenance, | page 16) | |
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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 16) | |
| 2. | Damaged burner | 2. | or replace burner orifice | ||
| Replace damaged burner | |||||
| 3. | Gas regulator defective | 3. | Replace gas control |
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Slight smoke or odor during | 1. Not enough air | 1. | Check burner for dirt and | |||
initial operation |
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| debris. If found, clean burner | ||
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| (see Cleaning and Mainte- | ||
| 2. | Gas regulator defective | 2. | nance, page 16) |
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| Replace gas control |
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| 3. | Residues from manufacturing | 3. | Problem will stop after a few | ||
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| processes and logs curing |
| hours of operation |
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Moisture/condensation noticed | 1. Not enough combustion/ven- | 1. | Refer to Air for Combustion | |||
on windows |
| tilation air |
| and Ventilation requirements | ||
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| (page 5) |
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www.desatech.com | 19 |
