TROUBLE- SHOOTING
Continued
OBSERVED | POSSIBLE |
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PROBLEM | CAUSE |
| REMEDY |
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Pilot lights but flame | 1. | Manual shutoff valve | 1. | Fully open manual |
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goes out when |
| not fully open. |
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control knob is | 2. | Control knob not fully | 2. | Press in control knob |
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released. |
| pressed in. |
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| fully. |
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| 3. | Control knob not |
| 3. | After pilot lights, keep |
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| pressed in long |
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| control knob pressed in |
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| enough. |
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| 30 seconds. |
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| 4. | Safety interlock system | 4. | Wait | one minute | for |
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| has been triggered. |
| safety interlock system |
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| 5. | Thermocouple connec- |
| to reset. Repeat ignition. |
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| 5. | Hand tighten until |
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| tion loose at control |
| snug, then tighten 1/4 |
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| valve. |
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| turn more. |
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| 6. | Pilot flame not touching | 6. | A) Contact qualified |
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| thermocouple, which |
| service person to |
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| allows thermocouple to |
| properly adjust pilot |
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| cool, causing | pilot |
| flame |
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| flame to go out. This |
| B) Contact local |
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| problem could | be |
| natural gas company. |
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| caused by any or all of |
| C) Clean pilot (see |
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| the following: |
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| Cleaning and Mainte- |
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| A) Improperly ad- |
| nance, page 23) or |
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| justed pilot flame |
| replace pilot assembly. |
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| B) Low gas pressure |
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| C) Dirty or partially |
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| clogged pilot |
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| 7. | Thermocouple damaged. | 7. | Replace thermocouple. |
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| 8. | Control valve damaged. | 8. | Replace control valve. |
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Burner does not light | 1. | Safety interlock |
| 1. | Fully | depress | control |
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after pilot is lit. |
| system has been |
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| knob | in any | position |
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| inadvertently trig- |
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| other than pilot. Wait one |
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| gered. |
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| minute for safety inter- |
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| lock system to reset. Re- |
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| peat ignition. |
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| 2. | Burner orifice is |
| 2. | Clean burner (see |
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| clogged. |
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| Cleaning and Mainte- |
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| nance, page 23) or |
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| replace burner orifice |
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| (see Changing Burner |
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| 3. | Burner orifice diameter |
| Orifice, page 30). |
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| 3. | Replace burner orifice |
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| is too small. |
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| (see Changing Burner |
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| 4. | Inlet gas pressure is |
| Orifice, page 30). |
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| 4. | Contact local natural |
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| too low. |
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| gas company. |
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Delayed ignition of | 1. | Manifold pressure is | 1. | Contact local natural |
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burner. |
| too low. |
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| gas company. |
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| 2. | Burner orifice is |
| 2. | Clean burner (see |
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| clogged. |
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| Cleaning and Mainte- |
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| nance, page 23) or |
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| replace burner orifice |
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| (see Changing Burner |
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| Orifice, page 30). |
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| Continued | 25 |
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100749
