12
TROUBLESHOOTING
TROUBLESHOOTING
Continued
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
Whenignitorbuttonispressed,thereisspark | 1. | Gas supply turned off or equipment | 1. | Turn on gas supply or open equipment |
at pilot but no ignition (GA9050A Only) |
| shutoff valve closed |
| shutoff valve |
| 2. | Control knob not in PILOT position | 2. | Turn control knob to PILOT position |
| 3. | Control knob not pressed in while in | 3. | Press in control knob while in PILOT |
|
| PILOT position |
| position |
| 4. | Air in gas lines when installed | 4. | Continue holding down control knob. |
|
|
|
| Repeat igniting operation until air is |
| 5. | Pilot adjustment screw closed |
| removed |
| 5. | Adjust pilot flame for approximately | ||
| 6. | Pilot is clogged |
| 2" blue flame |
| 6. | Clean pilot (see Cleaning and Mainte- | ||
| 7. | Low gas pressure |
| nance, page 11) or replace pilot assem- |
|
| bly | ||
|
|
| 7. | Replace gas control |
Pilot lights but flame goes out when control | 1. | Control knob not fully pressed in |
|
|
2. | Control knob not pressed in long | 1. | Press in control knob fully | |
knob is released (GA9050A Only) |
| enough | 2. | After pilot lights, keep control knob |
| 3. | Equipment shutoff valve not fully |
| pressed in 30 seconds |
| 3. | Fully open equipment shutoff valve | ||
|
| open | 4. | A) Contact local natural gas company |
| 4. | Pilot flame not touching thermocouple, |
|
|
|
| which allows thermocouple to cool, |
| B) Clean pilot (see Cleaning and Main- |
|
| causing pilot flame to go out. This prob- |
| tenance, page 11) or replace pilot as- |
|
| lem could be caused by one or both of |
| sembly |
|
| the following: |
|
|
|
| A) Low gas pressure |
|
|
|
| B) Dirty or partially clogged pilot |
|
|
| 5. | Thermocouple connection loose at con- | 5. | Hand tighten until snug, then tighten |
|
| trol valve |
| 1/4 turn more |
| 6. | Thermocouple damaged | 6. | Replace thermocouple |
| 7. | Control valve damaged | 7. | Replace control valve |
|
|
|
|
|
Burner does not light after pilot is lit | 1. | Burner orifice clogged | 1. | Clean burner orifice |
(GA9050A Only) | 2. | Inlet gas pressure is too low | 2. | Contact local natural gas company |
| 3. | Thermocouple leads disconnected or | 3. | Reconnect leads |
|
|
| ||
|
| improperly connected |
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|
|
|
|
|
|
Delayed ignition burner (GA9050A Only) | 1. | Pilot flame needs adjusting | 1. | Adjust pilot flame for approximately |
| 2. | Wrong pilot orifice |
| 2" blue flame |
| 2. | Replace pilot orifice set | ||
For more information, visit www.desatech.com
