Installation and operating instruction
Oil burner WL5-PB-H purflam®
10 Troubleshooting
83242002 1/2019-03 La
54-76
Error codes with lockout
The following faults must only be rectified by qualified personnel:
Fault codes
Fault
Cause
Rectification
2 x flashing
No flame,
end of safety time
Oil pump supplies no oil
Oil supply leaking
Check oil supply
Anti siphon valve does not
open
Check valve, if necessary
replace
Shut off device closed
Open shut off device
Pre-filter strainer soiled
Replace pre-filter strainer
Oil pump defective
No oil throughput at the
nozzle
Oil nozzle blocked
Replace nozzle
No ignition
Ignition electrode dirty or
wet
Clean ignition electrode
Ignition electrode spark gap
too big or short circuited
Set ignition electrode
[ch. 9.7]
Ceramic insulator defective
Replace ignition elec-
trodes
Ignition cable defective
Replace ignition cable
Ignition unit defective
Replace ignition unit
Solenoid valve does not
open
Coil defective
Replace coil
Combustion manager does
not detect a flame signal
Flame sensor soiled
Clean flame sensor
Flame sensor defective
Replace flame sensor
Illumination insufficient
Check burner setting
Check correct position of
illumination tube.
Pump motor does not run
Oil pump seized
Capacitor defective
Replace capacitor
Pump motor defective
Replace pump motor
No flame formation despite
ignition and oil supply
Nozzle distance incorrect
Check nozzle distance,
adjust if necessary
[ch. 9.10]
Recirculation aperture too
big
Reduce recirculation
aperture [ch. 9.11].
Mixing pressure too high
Check mixing pressure
[ch. 7.1.2]
Flashing 3 times
Air pressure switch fault
Air pressure switch does
not react
Air pressure switch set in-
correctly
Reset air pressure switch
Air pressure switch defect-
ive
Check air pressure
switch, if necessary re-
place
Setpoint speed of fan is not
achieved
Fan defective
Check fan, if necessary
replace [ch. 9.12]