TROUBLESHOOTING
Continued
OBSERVED FAULT | POSSIBLE CAUSE | SOLUTION | |
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The fan comes on but the | 1. Ignitor is not functioning | 1. | A) Check the connections |
flame does not light or does |
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| of the ignition cables to the |
not remain lit |
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| electrodes and transformer |
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| B) Check the position of the |
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| electrodes and the distance |
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| between them, in accordance |
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| with the diagram on page 7 |
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| C) Check that the electrodes |
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| are clean |
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| D) Replace the ignition |
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| transformer |
| 2. Faulty flame control | 2. | Replace the flame control |
| 3. | 3. | Clean or replace the photo- |
| cell |
| electric cell |
| 4. Fuel is not reaching the burner | 4. | A) Check that the connection |
| or a sufficient amount is not |
| between the pump and the |
| arriving |
| motor is intact |
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| B) Check that air has not fil- |
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| tered into the fuel circuit, check |
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| the tubes and the filter seal |
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| C) Clean or, if necessary, |
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| replace the nozzle |
| 5. Solenoid valve is not working | 5. | A) Check the electrical con- |
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| nection |
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| B) Check the LI thermostat |
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| C) Clean or, if necessary, |
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| replace the solenoid valve |
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The fan comes on and the flame | 1. Insufficient air for combustion | 1. | A) Remove anything block- |
lights, but produces smoke |
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| ing or obstructing the aspira- |
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| tion and/or airflow ducts |
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| B) Check the position of the |
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| air regulation ring |
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| C) Clean the burner disc |
| 2. Too much air for combustion | 2. | Check the position of the air |
| 3. Fuel is dirty or contains water |
| regulation ring |
| 3. | A) Replace the fuel with | |
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| clean fuel |
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| B) Clean the fuel filter |
| 4. Air has filtered into the fuel | 4. | Check the condition of the |
| circuit |
| tubes and the seal of the fuel |
| 5. Inadequate quantity of fuel in |
| filter |
| 5. | A) Check the pump pressure | |
| burner |
| B) Clean or replace the nozzle |
| 6. Too much fuel in burner | 6. | A) Check the pump pressure |
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| B) Replace the nozzle |
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The heater does not turn off |
| 1. | Replace the solenoid valve |
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The fan does not switch off | 1. Faulty fan thermostat | 1. | Replace the FA thermostat |
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