Weishaupt WM-L20/2-A R User Manual

Installation and operating instruction
Oil burner WM-L20/2-A R (W-FM100/200)
10 Troubleshooting
83252902 1/2019-09 La
60-84
10.2 Rectifying faults
The following faults must only be rectified by qualified personnel:
Fault Cause Rectification
Burner motor does not run No voltage Check voltage supply
Overload relay or motor protection
switch has tripped
Check setting
Motor contactor / frequency converter
defective
Replace motor contactor / frequency
converter
Motor defective Replace motor
No ignition Ignition electrodes too far apart or short
circuit
Set ignition electrode [ch.9.4]
Ignition electrode dirty or wet Clean and adjust ignition electrode
[ch.9.4]
Ceramic insulator defective Replace ignition electrode.
Ignition cable defective Replace ignition cable
Ignition unit defective Replace ignition unit
Fuel valve does not open No voltage Check voltage supply
Coil defective Replace coil
Oil pump supplies no oil Shut off device closed Open shut off device
Oil supply leaking Check oil supply [ch.12.1]
Anti siphon valve does not open Check valve and replace if necessary
Oil filter of oil supply soiled Clean filter insert or replace
Oil pump defective Replace oil pump
No oil throughput at the nozzle Nozzle blocked Replace nozzle
No flame formation despite igni-
tion and fuel
Ignition electrode set incorrectly Set ignition electrode [ch.9.4]
Mixing pressure too high Correct mixing pressure in ignition
load setting, if necessary adjust
mixing head [ch.4.3]
Poor start behaviour of burner Mixing pressure too high Correct mixing pressure in ignition
load setting, if necessary adjust
mixing head [ch.4.3]
Ignition electrode set incorrectly Set ignition electrode [ch.9.4]
Too much or too little fuel Correct fuel quantity in ignition posi-
tion via fuel actuator
Combustion manager does not
detect a flame signal
Flame sensor soiled Clean flame sensor
Flame signal insufficient Check flame signal
Check flame sensor
Check burner setting
Flame sensor defective Replace flame sensor
Combustion pulsating or burner
booming
Incorrect combustion air quantity Check combustion values
Mixing head set incorrectly Set mixing head [ch.4.3]
Back pressure from the system Check flue gas system [ch.12.2]
Flame failure during operation Oil supply leaking / suction resistance
too high
Check oil supply [ch.12.1]
Oil nozzle soiled/worn Replace nozzle
Flame signal insufficient Check flame signal
Check flame sensor
Check burner setting

Weishaupt WM-L20/2-A R Specifications

General

Brand	Weishaupt
Model	WM-L20/2-A R
Category	Burner
Language	English