TROUBLE-
SHOOTING
Continued
28
| 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 | ||
| goes out when |
| not fully open. |
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| control knob is | 2. | Control knob not fully | 2. | Press in control knob | ||
| 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 enough. |
| control knob pressed in | ||
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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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| to reset. Repeat ignition. | |
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| 5. | Thermocouple connec- | 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 26) or | ||
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| justed pilot flame |
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| 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 dam- | 7. | Replace thermocouple. | ||
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| aged. |
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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 | |
| 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 | |
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| gered. |
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| one minute for safety | |
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| interlock system to | |
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| reset. Repeat 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 26) or | |
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| replace burner orifice | |
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| (see Changing Burner | |
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| Orifice, page 34. | |
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| 3. | Burner orifice diameter | 3. | Replace burner orifice | ||
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| is too small. |
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| (see Changing Burner | |
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| Orifice, page 34). | |
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| 4. | Inlet gas pressure is | 4. | Contact local natural | ||
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| too low. |
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| gas company. | |
100792