Intermittent hot water fault on my Potterton Performa 28?

get hot water then little while it gets luke warm then it get hot again. I checked the pressure and no neon fault lights on.
raj, December 2016


done
http://forums.moneysavingexpert.com/showthread.php?t=416850

XXX, December 2016
link Click here to see other fixes for Potterton.