[Armstrm]

I have just had a very similar problem with a Rangemaster 110 Nexus Induction Range cooker. The main 4 ring Induction pcb developed a fault with the power supply to one of the cooling fans. I replaced the board and after putting it all back together I got the er31 error on the display. After trying the procedure mentioned in this thread and failing, I started looking through YouTube and eventually found what I was looking for. I great guy has posted a video showing the configuration procedure for the slightly newer models. It is similar but not the same. You need to pay close attention to turning and releasing the knows at just the right time. I did what he did and bingo it all started working.

The video can be seen here:

https://youtu.be/L5Jzdk6DV7I

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