Troubleshooting Tips & Tricks

Here you will find the most frequent inquiries from our customers about the cause of malfunction when the burner switches to malfunction. We give hints on possible causes that could cause this malfunction. Of course, we can not take into account all circumstances and in no case replace the specialist on site..

Oil burner malfunctions

My oil burner does not start, engine hums and burner goes to fault after a short time

Possible reasons:

• Oil pump is fixed and blocks the motor
• Motor shaft is stuck, motor defective
• Starting capacitor of the motor defective
• Pump coupling defective

My burner starts, ignites normally, burns and goes to fault after approx. 10 sec.

Possible reasons:

• Photocell defective or soiled
• Burner control unit defective

My burner pre vents, valve opens audibly, but no flame is coming

Possible reasonsn:

• Ignition electrode dirty, distance incorrect or defective
• Ignition cable fails, ignition transformer defective
• Nozzle contaminated, defective
• Automatic burner control defective (no voltage on ignition transformer)
• Oil pump does not bring pressure, defective or no oil in tank
• Incorrect air setting, too much air during ignition

My burner starts very hard and smokes after ignition

Possible reasons:

• Ignition electrode dirty, distance incorrect or defective
• Ignition cables strike through
• Nozzle dirty or defective
• Boiler heavily soiled, no flue, high combustion chamber resistance
• Oil pump brings fluctuating pressure, defective or too little oil in the tankk
• Incorrect air setting, too much air during ignition

Burner goes out a short time after ignition and restarts again

Possible reasons:

• Flame break due to incorrect setting
• Nozzle soiled
• Fluctuating pump pressure
• Photoresistor dirty
• Solenoid coil or control unit defective

Gas burner malfunctions

My gas burner pre vents, solenoid valve opens, burner goes out and restarts again

Possible reasons:

• Too little gas pressure present
• Gas filter dirty
• Incorrect setting on the gas pressure switch

My gas burner vented before, ignites perfectly with flame formation, shortly thereafter malfunction

Possible reasons:

• No or too low monitoring current
• Ionization electrode or UV probe defective
• Burner control unit defective
• Incorrect burner setting