hello new to this site so hope someone with a bit of boiler knowledge can help? I have a baxi 80e and when we have a shower the water will just go cold and then slowly warm up again for about 2 / 3 minutes then go cold again it seems that the higher you turn the temp up the quicker the gap between it going cold is I was told it was the dhw temp sensor so looking through the manual located it and ordered one of ebay I had no prob in exchanging it but it hasn't worked I would be grateful if anyone can help as fed up with wife complaining about it lol..... 
