TROUBLE SHOOTING CHART for qualified serviceman - MAIN BURNER
SYMPTOM |
| POSSIBLE CAUSES |
| CORRECTIVE ACTION |
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Flame too large | 1. Defective operator section of gas valve. | 1. | Replace complete valve. | |
| 2. | Burner orifice too large. | 2. | See orifice chart to determine the correct orifice size |
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| for your Model Number and elevation. |
| 3. | Pressure regulator malfunction. | 3. | Regulator must be adjusted by a qualified serviceman |
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| using proper tools and instruments. |
Noisy Flame | 1. | Noisy pilot. | 1. | Reduce pilot gas with adjusting screw on combination |
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| gas. (Fig. 1). |
| 2. | Burr in orifice (if it whistles or resonates). | 2. | Remove burr or replace orifice (Do not enlarge orifice). |
| 3. | Excessive gas input. | 3. | See “Flame Too Large”, above. |
Yellow tip flames (Some | 1. Clogged main burner ports. | 1. Clean main burner ports (Do not enlarge ports). | ||
yellow tipping on LP Gas | 2. Clogged draft hood. | 2. | Clean draft hood. | |
is permissible) | 3. | Linted up air shutter. | 3. | Check for dust or lint at air mixer opening and around |
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| the shutter. |
Floating Flame | 1. Blocked venting. | 1. | Clean flue passageways to relieve blockage. | |
Gas Odor | 1. | Chimney or flue obstruction. | 1. | Clean flue. |
| 2. | Drafts around heater. | 2. | Eliminate drafts. |
| 3. | Gas leak. | 3. | Shut off gas service immediately. Check piping. Call |
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| gas company. See “For Your Safety” (Page 1), and |
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| “Gas Supply” (Page 3). |
Delayed Ignition | 1. | Pilot flame too small. | 1. | Check pilot orifice, clean, increase pilot gas flow if |
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| necessary by adjusting at combination control valve |
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| (Fig. 1). |
| 2. | Burner ports clogged near pilot. | 2. | Clean burner ports (do not enlarge ports). |
| 3. | Low gas pressure. | 3. | Check gas supply pressure. See “Gas Supply”. |
| 4. | Pilot decreases in size when main | 4. | Supply piping is inadequately sized. Consult local gas |
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| burners come on. |
| utility or competent installer. |
| 5. | Drafts around unit. | 5. | Eliminate drafts. |
| 6. | Pilot lighter door open causing | 6. | Close pilot lighter door. |
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| disturbance of pilot flame. |
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| 7. | Improper venting. | 7. | See “Venting” (Page 2). |
| 8. | Pressure regulator malfunction. | 8. | Regulator must be adjusted by a qualified serviceman |
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| using proper tools and instruments. |
Failure to ignite | 1. | Main gas off. | 1. | Open all manual gas valves. |
| 2. | Defective gas valve. | 2. | Replace gas valve. |
Condensation of | 1. | Improper venting. | 1. | See “Venting”. |
water vapor. |
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Burner won’t turn off | 1. Defective or sticking automatic valve. | 1. | Clean or replace valve. | |
| 2. | Excessive gas pressure (The supply gas | 2. | To correct this situation contact the gas company |
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| pressure must not exceed 1/2 psi or 14” |
| supplying the gas. See “Gas Supply”. |
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| water column). |
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TROUBLE SHOOTING CHART - POOR HEATING RESULTS
Incorrect gas input | 1. | Gas input not checked. | 1. | |
| 2. | Clogged orifice. | 2. Check orifices for clogging. If clogged, clean out the | |
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| hole carefully with a smooth wood toothpick. (Do not |
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| in any way enlarge or distort it). |
| 3. | Pressure regulator. | 3. | Regulator must be adjusted by a qualified serviceman |
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| using proper tools and instruments. |
| 4. | Thermostat capillary tube damaged. | 4. | Replace gas valve. |
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