TROUBLESHOOTING
Continued
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
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| |
ODS/pilot lights but flame goes | 1. Control knob not fully pressed | 1. | Press in control knob fully | |
out when control knob is re- |
| in | 2. | After ODS/pilot lights, keep |
leased | 2. Control knob not pressed in |
| control knob pressed in 30 | |
|
| long enough |
| seconds |
| 3. | Safety interlock system has been | 3. | Wait one minute for safety in- |
|
| triggered |
| terlock system to reset. Repeat |
| 4. | Equipment shutoff valve not |
| ignition operation |
| 4. | Fully open equipment shutoff | ||
|
| 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 or |
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| mocouple, which allows ther- |
| natural 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 |
|
| problem could be caused by |
| Cleaning and Maintenance, |
|
| one or both of the following: |
| page 22) or replace ODS/pilot |
|
| A) Low gas pressure |
| assembly |
|
| 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 22) |
| 2. | Inlet gas pressure is too low |
| or replace burner orifice |
| 2. | Contact local propane/LP or | ||
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|
| natural gas company |
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|
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| |
Delayed ignition of burner | 1. Manifold pressure is too low | 1. | Contact local propane/LP or | |
| 2. | Burner orifice is clogged |
| natural gas company |
| 2. | Clean burner (see Cleaning | ||
|
|
|
| and Maintenance, page 22) |
|
|
|
| or replace burner orifice |
|
|
|
| |
Burner backfiring during com- | 1. Burner orifice is clogged or | 1. | Clean burner (see Cleaning | |
bustion |
| damaged |
| and Maintenance, page 22) |
| 2. | Burner damaged |
| or replace burner orifice |
| 2. | Replace burner pressure | ||
| 3. | Low inlet gas pressure | 3. | Contact local propane/LP or |
| 4. | Gas regulator defective |
| natural gas company |
| 4. | Replace gas regulator | ||
24 | www.desatech.com |
