TROUBLESHOOTING
Continued
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
ODS/pilot lights but flame goes | 1. Control knob not fully | 1. | Press in control knob fully | |
out when control knob is re- |
| pressed in |
|
|
leased | 2. Control knob not pressed in | 2. | After ODS/pilot lights, keep | |
|
| long enough |
| control knob pressed in 30 |
|
|
|
| seconds |
| 3. | Safety interlock system has | 3. | Wait one minute for safety in- |
|
| been triggered |
| terlock system to reset. Repeat |
|
|
|
| ignition operation |
| 4. | Equipment shutoff valve not | 4. | Fully open equipment shutoff |
|
| fully open |
| valve |
| 5. | Thermocouple connection | 5. | Hand tighten until snug, then |
|
| loose at control valve |
| tighten 1/4 turn more |
| 6. | Pilot flame not touching ther- | 6. | A) Contact local propane/LP |
|
| mocouple, which allows ther- |
| or natural gas company |
|
| mocouple to cool, causing pi- |
|
|
|
| lot flame to go out. This prob- |
| B) Clean ODS/pilot (see |
|
| lem could be caused by one or |
| Cleaning and Maintenance, |
|
| both of the following: |
| page 22) or replace ODS/pi- |
|
| A) Low gas pressure |
| lot assembly |
|
| B) Dirty or partially clogged |
|
|
|
| ODS/pilot |
|
|
| 7. | Thermocouple damaged | 7. | Replace pilot assembly |
| 8. | Control valve damaged | 8. | Replace control valve |
|
|
|
| |
Burner does not light after ODS/ | 1. Burner orifice is clogged | 1. | Clean burner (see Cleaning | |
pilot is lit |
|
|
| and Maintenance, page 22) or |
|
|
|
| replace burner orifice |
| 2. | Inlet gas pressure is too low | 2. | Contact local propane/LP or |
|
|
|
| natural gas company |
|
|
|
| |
Delayed ignition of burner | 1. Manifold pressure is too low | 1. | Contact local propane/LP or | |
|
|
|
| natural gas company |
| 2. | Burner orifice is clogged | 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) or |
|
|
|
| replace burner orifice |
| 2. | Burner damaged | 2. | Replace burner pressure |
| 3. | Low inlet gas pressure | 3. | Contact local propane/LP or |
|
|
|
| natural gas company |
| 4. | Gas regulator defective | 4. | Replace gas regulator |
|
|
|
| |
Yellow flame during burner | 1. Not enough air | 1. | Check burner for dirt and de- | |
combustion |
|
|
| bris. If found, clean burner |
|
|
|
| (see Cleaning and Mainte- |
|
|
|
| nance, page 22) |
| 2. | Gas regulator defective | 2. | Replace gas regulator |
24 | www.desatech.com |
