boiler overheat

Hi, I hope somebody can give me some advice as I am running out of ideas. I have a Potterton Performa 28i that only gives warm/cold water. I have changed the DHW plate heat exchanger along with all the bits I could get to on the diverter valve. (both diaphragms and the main needle valve). The...

Hi, I have recently started having issues with my boiler tripping out. I recently had a new radiator fitted in the lounge and in the en suite. During installation the system was drained, all radiators, pump, etc have been bled. The system worked fine for 2 months on hot water only & I...