51
05/2005 - Art. Nr. 13 018 106A
Troubleshooting
Oil
Symbol
Fault
Cause
Corrective action
w
P
z
1
1
x
oder
v
Burner idle.
Blower motor does not start
Protection device has opened
Blower motor does not start.
Blower motor runs.
No ignition.
Magnetic valves do not open.
Magnetic valves open
Flame appears, but pulsates and goes out
Burner stays on initial blower operation with
no flame
Other faults
Fault shut-down at any time with no
programme symbol
Parasitic flame on control system
shut-down
Insufficient air pressure
Protection switch triggered
Protection device defective
Cable between protection device and motor
defective
Motor defective
Air pressure switch wrongly set or defective
Fault in flame monitoring system
Ignition electrodes short-circuited
Ignition cable defective
Ignition transformer defective
Control and safety unit defective
Break in electrical connections
Solenoid(s) short-circuited
Valve jammed
Fuel does not reach burner
Too much air and/or gas
Burner head wrongly set
Servomotor defective
Air flap jammed
Mechanical coupling defective
Parasitic flame at start-up
Wear of UV cell
Check oil valves for leaks
Check reventilation function
Replace air pressure switch
Unlock, reset or replace protection
switches
Replace protection device
Check cable connections
Replace motor
Reset or replace air pressure switch
Check pressure pipes
Check that UV cell is clean
Replace control and safety unit
Set or replace electrodes
Replace ignition cable
Replace ignition transformer
Replace control and safety unit
Check cable between control and safety
unit , servomotor and pump unit
Replace solenoid(s)
Replace valve(s)
Check: Fuel-oil in tank, opening of protec-
tion valves and preliminary filter.
Check for vacuum in supply line, atomiza-
tion pressure, feed pump
Clean pump filter
Replace nozzles, pump coupling, pump
motor, hoses
Set air flap and/or oil flow
Set burner head
Set or replace servomotor
Free air flap
Check or replace coupling
Replace control and safety unit
Replace UV cell.
EN
