Servicing Manual
14
•
Tighten the oil line fittings
•
Check for damages/cracks in the
oil hoses
•
Look for - and eliminate - light
reflections due to sunrays,
lamps etc. that could reach and
disturb the flame sensor
•
Look for fires inside the
machine
Check for presence of external
(spurious) lights
(sunlight, lamps)
•
Clean the flame sensor with a
soft cloth and ethylic alcohol
•
Replace the flame sensor if
damaged or burnt
Check that the oil tank is full
Check for air bubbles
in the oil filter
Check that the nozzle is clean
•
See chapter “Cleaning the
combustion head”
Check that the whirl disc is
clean
•
See chapter “Cleaning the
combustion head”
•
See technical data sheets section
Check the adjustment of air
lock
Ckeck that the flame sensor is
not damaged, clean and
properly fixed in its seat
THE HEATER STARTS, THE
PREPURGE SEQUENCE
STARTS BUT THEN THE
HEATER STOPS WITHOUT
IGNITION
yes
no
