I have above nearly 3 years now and from (talked about this before) the beginning all the rings go to high and the fan cuts it down to a lower temperature resulting in quite slow to start boiling. It tells you this in the manual.
Is there anyway I could get a professional to rip the fan out.
Yes Zacs - glowing red and underneath glass you can see like 4 rings light up then after maybe 30-40 seconds down to 2 rings and so it goes on throughout the cooking.
They're meant to do that, it's how they maintain their temperature for controlled cooking. On our Neff hob we have two rings which heat up v quick and two which only heat up slowly.
Mine also do this to a point,they glow fully red at the start and then as temp is reached the lights dim - if you are constantly picking up pan and looking underneath then replacing it you will get variations.
If you have a pot of soup for example simmering,does it keep going off the simmer?