TROUBLESHOOTING
Continued
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
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ODS/pilot lights but flame goes | 1. Control knob not fully | 1. | Press in control knob fully | |
out when control knob is released |
| pressed in |
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| 2. | Control knob not pressed in | 2. | After ODS/pilot lights, keep con- |
|
| long enough |
| trol knob pressed in 30 seconds |
| 3. | Safety interlock system has | 3. | Wait one minute for safety in- |
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| been triggered |
| terlock system to reset. Repeat |
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| ignition operation |
| 4. | Equipment shutoff valve not | 4. | Fully open equipment shutoff |
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| fully open |
| valve |
| 5. | Thermocouple connection | 5. | Hand tighten until snug, then |
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| loose at control valve |
| tighten 1/4 turn more |
| 6. | Pilot flame not touching ther- | 6. | A) Contact local propane/LP |
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| mocouple, which allows |
| gas company |
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| thermocouple to cool, caus- |
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|
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| ing pilot flame to go out. This |
| B) Clean ODS/pilot (see |
|
| problem could be caused by |
| Cleaning and Maintenance, |
|
| one or both of the following: |
| page 19) 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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| 7. | Thermocouple damaged | 7. | Replace pilot assembly |
| 8. | Control valve damaged | 8. | Replace control valve |
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Burner does not light after ODS/ | 1. Burner orifice is clogged | 1. | Clean burner (see Cleaning | |
pilot is lit |
|
|
| and Maintenance, page 19) or |
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|
|
| replace burner orifice |
| 2. | Inlet gas pressure is too low | 2. | Contact local propane/LP gas |
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|
|
| company |
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| |
Delayed ignition of burner | 1. Manifold pressure is too low | 1. | Contact local propane/LP gas | |
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|
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| company |
| 2. | Burner orifice is clogged | 2. | Clean burner (see Cleaning |
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|
|
| and Maintenance, page 19) or |
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|
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| 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 19) or |
|
|
|
| replace burner orifice |
| 2. | Burner damaged | 2. | Replace burner |
| 3. | Gas regulator defective | 3. | Replace gas regulator |
www.desatech.com | 21 |
