| III. Main burner will not light |
| A. Valve / Switches |
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| 1. | Valve control off | 1. | Turn to “ON” position |
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| 2. | Blockage at the burner (line, | 2. | Check and clean |
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| orifice, or ports) |
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| 3. | Defective wall switch or | 3. | Conduct a continuity test or jumper wire |
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| thermostat |
| test and replace if defective |
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| 4. | Defective wiring or connections | 4. | Conduct a test with a jumper wire and |
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| repair as required |
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| 5. | Excessive length of thermostat | 5. | Reduce wire length to less than 100 feet or |
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| wire from valve to wall switch or |
| increase wire size |
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| thermostat |
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| 6. | Wall switch or thermostat | 6. | Wire correctly |
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| incorrectly wired |
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| 7. | Defective Valve | 7. | Turn valve and “ON/OFF” switch to the |
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| “ON” position. Check with millivolt meter |
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| at terminals |
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| should read greater then 460 millivolts. If |
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| the reading is OK and the burner does not |
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| come on, replace the gas valve |
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| 8. | Thermopile may not be | 8. | Recheck using the millivolt meter. The |
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| generating sufficient voltage |
| pilot flame may not be high enough for the |
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| (460 mV) |
| flame to properly engulf the thermopile. If |
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| so, adjust and reset. If voltage is still |
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| insufficient, replace thermopile |
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| 9. | Wall switch, thermostat, or wires | 9. | Follow previous corrective action, check |
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| are defective |
| switch and wiring. Replace where |
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| defective |
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| IV. Soot deposits on glass |
| 1. Flame impingement on logs | 1. | Adjust the log set to avoid direct flame |
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| impingement. Follow log placement |
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| instructions |
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| 2. | Improper primary air setting | 2. | Open aeration shutter more. |
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| 3. | Foreign material impeding | 3. | Ensure that no foreign material blocks |
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| burner |
| burner flame ports |
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| 4. | Air inlet blocked or restricted | 4. | Clean air inlets |
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| 5. | Vent system is restricted or | 5. | Check correct termination is used. |
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| inadequate |
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| V. Flame burns blue and lifts |
| 1. Insufficient combustion air being | 1.Ensure that no foreign material blocks air |
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| off burner |
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| supplied |
| inlets and that the burner shutter is |
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| 2. | Manifold pressure set too high |
| correctly adjusted. Ensure the vent is |
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| adequate |
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| 3. | Vent system restricted | 2. | Check manifold pressure |
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| 3. | Check vent system |
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| VI. Flames impinge on firebox |
| 1. Vent system is restricted or | 1. | Correct flue as required |
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| top |
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| inadequate |
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| 2. | Manifold pressure too high | 2. | Check manifold pressure as required |
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26
