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Malfunction
No ignition
Ignition electrodes short circuited
Distance of ignition electrodes too large
Ignition electrodes contaminated or humid
Ignition electrodes burnt out
Insulating body cracked
Ignition transformer defective
Ignition cable burnt
Automatic firing unit faulty
Loud, whistling
Oil pump is suctioning air
mechanical noise
Vacuum in the oil line too high
Burner motor bearing defective
Oil pump defective
Oil pump does not
Stop valve at oil filter or in suction line closed
pump any oil
Oil pump gear damaged
Suction valve has leakage
Oil line has leakage (pump suctions air)
Filter clogged
Filter not leakproof
Oil pump power insufficient
Clutch defective
Oil atomisation not
Oil nozzle loose, clogged or worn out
uniform - heavy soot
Oil nozzle spraying angle is wrong
deposit in flame tube
No oil flow
Oil nozzle clogged
Mixer device has thick
Air supply insufficient
layer of oil or heavy
carbon deposits
Air supply line contaminated/clogged
Flue gas pipe of the LAS is leaking
Burner setting wrong
Oil nozzle is wrong size
Combustion air quantity wrong
Suction line draws air (leakage)
Soot formation on the
Recirculation too low
air nozzle
Solenoid valve at oil
Coil defective
pump does not open
Automatic firing unit faulty
Automatic flame
Flame guard cable defective or bad plug con-
guard does not actu-
nection
ate
FA ROTEX A1 BOe - 02/2014
Possible cause
10
x
Faults and malfunctions
Possible solution
Set / change ignition electrodes
Adjust the ignition electrodes.
Clean ignition electrodes, check oil nozzle and burner
setting
Change ignition electrodes
Change ignition electrodes
Replace ignition transformer
Change ignition cable and determine the cause
Replace the combustion controller.
Check bolts
Clean the filter, open valves fully
Change burner motor
Change oil pump
Open stop valve
Change oil pump
Clean/ change suction valve
Check fittings and seal off.
Clean the filter
Change filter
Change oil pump
Change clutch
Check/ tighten/ change oil nozzle
Replace oil nozzle
Replace oil nozzle
Check air supply line for clogging
Use air supply lines with larger cross-section
Ambient air dependent operation: Check air intake
2
opening. (min. 150 cm
unblockable air intake opening).
Clean air supply line
Seal the flue gas pipe, change seal
Check/correct burner setting
Check / change nozzle type
Measure fan pressure, correct burner setting
Seal suction line
Open recirculation slightly
Change coil
Replace the combustion controller.
Replace flame guard cable.
Check X7 plug connection on automatic firing.
Check 3-pin plug connector on ignition transformer.
49
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