TROUBLE SHOOTING CHART
SYMPTOM |
| POSSIBLE CAUSES |
| CORRECTIVE ACTION |
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Flame too large | 1. | Defective operator section of valve. |
| 1. | Replace valve. |
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| 2. Burner orifice too large. |
| 2. | Check with local gas company for proper |
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| orifice - size and replace. |
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| 3. | If installed above 2,000 ft. |
| 3. See burner orifice section, Page 11. |
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Yellow burner flame | 1. Clogged burner ports. |
| 1. | Remove burners and check for obstruc- |
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| tions in throats, ports, and orifices. Clean - |
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| but do not enlarge ports or orifices. |
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| 2. | Obstruction around vent cap. |
| 2. | Make sure area around vent cap is clear, be |
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| sure vent system is sealed. |
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Gas odor | 1. Gas leak. |
| 1. See Page 1. |
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Delayed Ignition | 1. | Low gas pressure. |
| 1. Check gas supply pressure. |
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| 2. | Igniter not peroperly located. |
| 2. Check ignitor location and correct if |
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| necessary. |
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Failure to ignite | 1. | Main gas off. |
| 1. Open all manual gas valves. |
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| 2. | Temperature dial or thermostat not set high |
| 2. | Set temperature dial or thermostat to |
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| enough to call for heat. |
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| higher temperature. |
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| 3. Clogged burner orifice. |
| 3. Clean burner orifices (do not enlarge). |
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| 4. Incorrect wiring. |
| 4. Check wiring diagram. |
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| 5. Defective valve. |
| 5. Replace valve. |
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| 6. No power to unit. |
| 6. | Plug in power supply cord. Check 115 V. |
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| wall outlet. |
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Burner won’t | 1. Defective or damaged thermostat wire, |
| 1. Can be checked by removing wire from con- |
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turn off |
| or thermostat. |
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| trol board terminal. If burner goes off, replace |
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| thermostat. |
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| 2. | Thermostat sensor location on back of heater. |
| 2.Thermostat sensor attached to back of heater |
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| to |
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| 3. Defective or sticking valve. | 3. Replace valve. |
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| 4. Excessive gas pressure. |
| 4. Contact utility supplying gas. |
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| 5. Defective or damaged sensor. |
| 5. Replace thermostat. |
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Incorrect gas | 1. | Gas input not checked. | 1. |
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input | 2. Clogged orifices. |
| 2. Clean orifices with a smooth wood toothpick, |
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| do not enlarge. |
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Not enough heat | 1. Furnace undersized. | 1. | This is especially true when a dwelling or |
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| room is enlarged. Have the heat loss |
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| calculated and compare to furnace output. |
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| Your gas company can supply you with this |
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| information. If furnace is undersized, |
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| replace with correct size unit. |
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| 2. | Temperature dial set too low. | 2. | Raise temperature setting. |
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| 3. | Incorrect supply pressure. | 3. | Check supply pressure. |
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Too much heat | 1. | Temperature dial set too high. | 1. | Lower temperature setting. |
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| 2. | Combination control valve stuck open. |
| 2. Replace combination control valve. |
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Main burner | 1. Defective flame sensor. |
| 1. Check voltage and replace if low. |
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goes out | 2. | Input too high. | 2. | Check input rate. |
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during normal | 3. | Cover around pilot lighter hole not air |
| 3. Tighten wing nuts securing cover and sight |
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operation |
| tight. |
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| glass. Check and replace gasket if needed. |
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| 4. | Vent tubes not properly installed or | 4. | Follow instructions. Check both exhaust and |
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| sealed. |
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| air intake tubes, and vent cap. Be sure all |
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| gaskets are in place and properly sealed. Use |
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| only tubes and vent cap supplied. Do not |
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| alter vent tubes or cap. |
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| 5. | Limit switch opens. |
| 5. Clean air filter. |
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| 6. | Exhaust or Air Intake tubes blocked. | 6. | Remove obstruction. Check for snow |
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| accumulation around vent cap. |
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Page 17
