Faults - Probable causes - Solutions
37
2916050
GB
Tab. Q
(1)
When the burner does not fire or stops following a fault, the symbol
which appears on control box after lockout indicates type of problem.
Firing with pulsations or flame
detachment, (lift off) delayed
firing
Poorly adjusted head
Adjust
Poorly adjusted or dirty firing electrodes
Adjust
Poorly adjusted fan air gate: too much air
Adjust
Nozzle unsuited for burner or boiler
See Nozzle Table
Defective nozzle
Replace
Inappropriate pump pressure
Adjust
The burner does not pass to
2nd stage
Control device TR does not close
Adjust or replace
Defective control box
Replace
Uneven fuel supply
Check if cause is in pump or fuel supply
system
Feed burner from tank located near burner
Internally rusted pump
Water in tank
Remove water from tank bottom with
separate pump
Noisy pump, unstable pressure Air has entered the suction line
Tighten connectors
Depression value too high (higher than 35 cm Hg):
Tank/burner height difference too great
Feed burner with loop circuit
Piping diameter too small
Increase
Suction filters clogged
Clean
Suction valves closed
Open
Paraffin solidified due to low temperature
Add additive to light oil
Pump loses prime after
prolonged pause
Return pipe not immersed in fuel
Bring to same height as suction pipe
Air enters suction piping
Tighten connectors
Pump leaks light oil
Leakage from sealing organ
Replace pump
Smoke in flame - dark Bacharach
- yellow Bacharach
Not enough air
Adjust head and fan damper
Nozzle worn or dirty
Replace
Nozzle filter clogged
Clean or replace
Erroneous pump pressure
Adjust
Flame stability disk dirty, loose, or
deformed
Clean, tighten in place, or replace
Boiler room air vents insufficient
Increase
Too much air
Adjust head and fan damper
Dirty combustion head
Nozzle or filter dirty
Replace
Unsuitable nozzle delivery or angle
See recommended nozzles
Loose nozzle
Tighten
Impurities on flame stability disk
Clean
Wrong head adjustment or not enough air
Adjust, open air damper
Blast tube length unsuited to boiler
Contact boiler manufacturer
During operation, the burner
stops in lock out
Dirty or defective flame sensor
Clean or replace
Symbol
(1)
Fault
Probable cause
Suggested remedy
2
I
