Why: The main cable is not connected.
How to: Connect the main cable.
Why: Power is not reaching the plug.
How to: Check /repair the main supply.
Why: The sparking plug and the corresponding burner is dirty or coated with grease.
How to: Clean the end of the sparking zone plug and the burner.
Why: Gas is not reaching the hob.
How to: Check that the gas bottle regulator is correctly positioned and open. Open the gas connection tap in the case of main gas.
Why: There is no flame in the thermocouple zone.
How to: The gas burners are blacken the pans.
Why: Burner apertures dirty.
How to: Clean burner apertures.
Why: Gas nozzle or the diffuser is dirty.
How to: Clean gas nozzle or diffuser without using objects which could damage or modify the diameter of the gas outlet orifice.