Brotony Combi SE, flashing 60 light?

According to the 'helpful' manual, it says the 'ionisation circuit board is faulty'

So, which ones that. We had a circuit board replaced about 12 months ago related to the air switch

This time it works great, then it starts flashing to 60 light and nothing happens, reset or turn the boiler off/on and everything is fine again

This could be 2 days or 2 hours before it happens again and you lose hot water/heating and the boiler won't self start until its reset or turned off/on again


Many Thanks