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EN
TROUBLESHOOTING INSTRUCTIONS
The list of faults/causes/possible solutions for a set of main failures is a guideline for professional personell authorised to carry out
service and maintenance.
Irregular burner operation or malfunction: check that every adjustment parameter is correctly set as per instruction on this manual.
TROUBLESHOOTING TABLE
CAUSES
Preheating period too long
Defective Gefran controller
Defective control box unit
No electrical power supply
Wrong electrical connections
Air pressure switch not "closed" Check contacts
Boiler thermostats open
Fan motor overload intervention Replace fuse
Auxiliaries fuses interrupted
Servomotor [CLOSE] position
switch not reach
High vacuum in oil pipe due to
dirty filter
Burner is higher than oil tank by
more than 3 m
Air in the oil pipeline
Servomotor [OPEN] position
switch not reach
Servomotor [MIN] position
switch not reach
Extraneous Light
Fuel solenoid valve fails to close
(Light oil Burner - direct ignition)
Air pressure switch fail to
connect to Terminal 14
Fan contaminated/dirty
Fan motor rotation direction not
correct
Flame supervision circuit
internal test failed
Pilot flame failure - Pilot gas
valves not open
Pilot flame establish - weak
flame signal
Ignition transformer faulty
Ignition cable & electrodes
defective
Electrode bad position
Fuel oil solenoid valve fails to
open
Air pressure switch not close,
Oil pump contactor open
No oil supply
Oil pump coupling broken
Flame sensor signal failure
Head adjustment not correct
Oil/Air mixture setting not
correct
Dirty combustion head
Nozzle dirty or damaged
Fuel pressure inappropriate
Capacity reduction
Load control device does not
close
24
OIL OPERATION
REMEDIES
Check GEFRAN controller,
replace if necessary
Replace control unit
Replace control box unit
Check switches/contactors
Check connections
Check contacts
Replace fuse
Check servomotor settings
Clean filter or replace filter
cartridge
Reduce Height or prepare a
ringline pump
Re-tighten pipe connections
Check servomotor settings
Check servomotor settings
Eliminate light source
Clean valves or replace if
necessary
Check contacts
Clean fan
Check direction and contactor
Replace control unit
Check valves contacts / replace if
necessary
Check flame sensor
Replace if necessary
Replace
Replace
Check setting / replace if
necessary
Check contacts and clean valves.
Replace solenoid coil if necessary
Check air pressure switch contacts
Check shut-off valves
Check Pump, replace if necessary
Replace pump unit
Clean, re-position or replace if
necessary
Check settings
Check settings
Clean or replace disk if necessary
Clean or replace nozzle if
necessary
Adjust pressure or replace pump if
necessary
Check filter, pump pressure and
nozzle. Replace item if necessary
Check load control, replace if
necessary
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420010466301
LAL
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