MPI Technologies FCX - Manual (Page 23)

  
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.