I am thinking that this oven pulsing on and off meets the definition of what the DNOs consider to be a disturbing load. If it is you should have asked the DNO if you can connect the oven to their supply. I would suggest they would have said no.

As for the Wiring Regulations ( AKA Bs 7671:2018 Amd 2 2:2022 we have regulation 331.1 which Relates to Comparability of Characteristics. This regulation requires of equipment likely to impair the supply and in (iv)  is an example of rapidly fluctuating loads. Your oven fits that description.

Ask the supplier to provide you with a Declaration of Conformity to see what standards the oven complies with.

I know of a circumstance where an electrician installed an EV supply without asking the DNO. The owner of the house had a knock on the door from the DNO investigating a supply disturbance to a next door neighbors supply. It turned out the EV charger had been connected to a looped supply causing the lights to flicker. The DNO required the householder to have the EV supply disconnected. The electrician then had to pay for the excavation of the householders brick paved drive and restore it after the DNO had installed a new supply cable. 

Thanks John --  The court case has no date set yet. The current oscillation is one of a number of complaints we have with the oven. I will read up on all the excellent advice from members. before I present documents to court.

The supplier Lincat -have attended site 5 times, changed half the sensors, without avail. The Temperature and Humidity controls are all over the place.

The oven has LIncat stamped all over it. On both the hardware and software,   it came with a 2 year Lincat warentee.  Lincat first line of defense is-------  This oven is not a Lincat.!

So I ask do they  roam the country attempting to repair random faulty appliances out of altruism. ?

Tony

Thanks John --  The court case has no date set yet. The current oscillation is one of a number of complaints we have with the oven. I will read up on all the excellent advice from members. before I present documents to court.

The supplier Lincat -have attended site 5 times, changed half the sensors, without avail. The Temperature and Humidity controls are all over the place.

The oven has LIncat stamped all over it. On both the hardware and software,   it came with a 2 year Lincat warentee.  Lincat first line of defense is-------  This oven is not a Lincat.!

So I ask do they  roam the country attempting to repair random faulty appliances out of altruism. ?

Tony

Anthony

Your first step should be to get their Declaration of Conformity and verify if the oven or the literature is CE or UKCA marked.  To put the oven on the UK market it has to comply with the Electrical Equipment (Safety) Regulations 2016 updated to 2022. also the EMC Regulations.