C
cookiecat
Heat & hot water stopped 2 days ago, boiler flashing fd. Followed trouble shooting in manual and ordered a new water flow sensor. Was replaced today, still no blue light and still flashing fd. New plumber called, he replaced pump and told us to bleed rads and all will be fine. 5 hours later, blue light appears every now and again for 4 & 40 seconds. Any ideas would be really appreciated