
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 | 2. | After ODS/pilot lights, keep | 
| leased | 2. Control knob not pressed in | |||
| 
 | 
 | long enough | 
 | control knob pressed in 30 | 
| 
 | 3. | Safety interlock system has | 
 | seconds | 
| 
 | 3. | Wait one minute for safety in- | ||
| 
 | 
 | been triggered | 
 | terlock system to reset. Repeat | 
| 
 | 4. | Equipment shutoff valve not | 
 | ignition operation | 
| 
 | 4. | Fully open equipment shutoff | ||
| 
 | 
 | fully open | 
 | valve | 
| 
 | 5. | Pilot flame not touching | 5. | A) Contact local natural or | 
| 
 | 
 | thermocouple, which allows | 
 | propane/LP gas company | 
| 
 | 
 | thermocouple to cool, caus- | 
 | 
 | 
| 
 | 
 | 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 28) or replace ODS/pilot | 
| 
 | 
 | A) Low gas pressure | 
 | assembly | 
| 
 | 
 | B) Dirty or partially clogged | 
 | 
 | 
| 
 | 
 | ODS/pilot | 
 | 
 | 
| 
 | 6. | Thermocouple connection | 6. | Hand tighten until snug, then | 
| 
 | 
 | loose at control valve | 
 | tighten 1/4 turn more | 
| 
 | 7. | Thermocouple damaged | 7. | Replace pilot assembly | 
| 
 | 8. | Control valve damaged | 8. | Replace control valve | 
| 
 | 
 | 
 | 
 | |
| One or both burners do not light | 1. Inlet gas pressure is too low | 1. | Contact local natural or pro- | |
| after ODS/pilot is lit | 2. | Burner orifice(s) clogged | 
 | pane/LP gas company | 
| 
 | 2. | Clean burner(s) (see Cleaning | ||
| 
 | 
 | 
 | 
 | and Maintenance, page 28) or | 
| 
 | 3. | Mislocated crossover tube | 
 | replace burner orifice(s) | 
| 
 | 3. | Contact qualified service person | ||
| 
 | 4. | Remoteselector in OFF position | 4. | Put remote selector in ON | 
| 
 | 
 | 
 | position | |
| 
 | 5. | Wire disconnected from gas | 5. | See Wiring Diagram, page 33 | 
| 
 | 
 | control  | 
 | 
 | 
| 
 | 
 | els Only) | 
 | 
 | 
| 
 | 
 | 
 | 
 | |
| Delayed ignition of one or both | 1. Manifold pressure is too low | 1. | Contact local natural or pro- | |
| burners | 2. | Burner orifice(s) clogged | 
 | pane/LP gas company | 
| 
 | 2. | Clean burner(s) (see Cleaning | ||
| 
 | 
 | 
 | 
 | and Maintenance, page 28) or | 
| 
 | 3. | Mislocated crossover tube | 
 | replace burner orifice(s) | 
| 
 | 3. | Contact qualified service | ||
| 
 | 
 | 
 | 
 | person | 
| 30 | www.desatech.com |