9￿￿￿23(5$7,1*￿)$8/76

During the course of seemingly normal operation, there may be operating faults experienced in the system. Some of the more common faults that may be encountered are:

%851(5￿)$8/7￿6+87￿'2:1 - The burner may shut down for any of several reasons, at which point the burner safety device light (red) on the control pa- nel will be ON and the there will be a green fault in- dicator light lit on the oil burner. This may be caused by a loss of fuel oil (tank empty?), a fouled oil spray nozzle in the burner, or perhaps a fouled or faulty flame sensor. To attempt a re-start after correcting any burner problem and the fuel supply is assured, push the reset button on the burner. The burner should re-start after the preset time delay period ex- pires.

29(5+($7,1*￿ 6$)(7<￿ 7+(50267$7￿ 6+87￿ '2:1 - Opening of either the Water Overheating Safety Thermostat or the Combustion Product Overheating Thermostat will result in an oil burner shutdown. In either case, the burner safety device light (red) on the control panel WILL REMAIN OFF, and the green fault indicator light on the oil burner will REMAIN OFF. The only way to tell if either device has opened is to check electrically or check the position of the reset button, located under the screw cap over each device.

The Water Overheating Safety Thermostat may open if the water temperature exceeds 230 deg. F (110C) in the boiler. ONLY a faulty Water Temperature Control causes this shutdown. The Water Temperature Control probably requires replacement.

The Combustion Product Overheating Safety Thermostat may open if combustion products exceed 250 deg. F (120C). This may require adjustment of the oil burner to the proper firing rate or cleaning the boiler and/or condenser.

After correcting any fault, either thermostat must be manually reset by removing the screw cap on top and depressing the reset button.

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MPI Technologies FCX manual 9235$7,1*$8/76