see the following steps:
f the burner doesn't run, set the thermostat a few degrees higher
than normal to see if it comes on. If it still doesn't come on, check switches
, and breakers and fuses (see the Electrical Service Panel Fix-It Guide
). If the unit has a reset button, press it. Also oil the motor
at any oil ports (see below).
If the unit doesn't want to start and run, first check the c
make sure that the ignition is getting power. If there is power, check
the built-in safety controls (see below) that may turn the system off if
they perceive problems.
If the burner cycles too often, replace the filter (see below). Also, oil and adjust the blower (see the Forced-Air Distribution Fix-It Guide
If the burner runs but won't fire, make sure the oil valves are open
and that there's oil in the tank. Check the tank level with a clean
If the burner smokes or squeals, shut off the unit, let it cool, and
fill the oil cups. Recheck them after the motor has run for an hour.
If the chimney smokes even after the flue has warmed up, the unit is wasting fuel; call for professional repair.
Oil furnaces and other heat systems include safety devices that
monitor operation and turn off the unit if something goes wrong. In some
cases, the safety device can be the problem.
If you encounter an operating problem with an oil furnace, first reset the safety and try again.
If the burner kicks off again, shut off all power at the electrical service panel
the burner motor and ignition may be protected by separate fuses or breakers.
If the sensor has a photocell, wipe it with a clean rag or tissue and see if the furnace starts.
If the safety is a stack switch mounted on the flue, remove the screw
holding the unit to the stack, slide it out, and wipe off the sensor.
If the furnace won't start after three tries, seek professional
assistance. Unburned oil can accumulate in the combustion chamber and