Search results

So does that mean I need to replace the 3 port valve or the entire boiler?

It is floppy at the 3 port valve.

I have had a problem in the last few days with my central heating system. I keep my hot water and central heating on at all times, all year round and worked the heating with the room thermostat. That has worked well for 17 years. But, at the weekend my central heating radiators became so hot...