TROUBLE-
SHOOTING
Continued
30
OBSERVED | POSSIBLE |
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PROBLEM | CAUSE | REMEDY | ||
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Burner fails to | 1. | Pilot flame not lit. | 1. | Light pilot burner (see |
respond to thermo- |
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| Lighting Instructions, |
stat. |
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| page 32). |
| 2. | Pilot flame not prop- | 2. | Pilot flame needs |
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| erly heating end of |
| adjusting. Contact a |
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| thermocouple. |
| qualified service person. |
| 3. | Pilot burner orifice | 3. | Clean pilot burner (see |
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| clogged or damaged. |
| Cleaning and Mainte- |
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| nance, page 26). |
| 4. | Control valve defec- | 4. | Replace control valve. |
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| tive. |
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| 5. | Temperature at ther- |
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| mostat bulb satisfied. |
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Heater produces a | 1. | Air in gas line. | 1. | Operate burner until air |
whistling noise when |
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| is removed from line. |
burner is lit. |
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| Have gas line checked |
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| by local natural gas |
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| company. |
| 2. | Air passageways on | 2. | Observe minimum |
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| heater blocked. |
| installation clearances |
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| (see Figure 3, page 7). |
| 3. | Dirty or partially | 3. | Clean burner (see |
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| clogged burner orifice. |
| Cleaning and Mainte- |
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| nance, page 26) or |
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| replace burner orifice. |
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Heater produces a | 1. Metal expanding while | 1. | This is common with | |
clicking/ticking noise |
| heating or contracting |
| most heaters. If noise is |
just after burner is lit |
| while cooling. |
| excessive, contact |
or shut off. |
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| qualified service person. |
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