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Hi again, After your spot on advice re my F14 error code.... Boiler has now taken to switching off with a code of F4. Manual says boiler went off while lit. Reboot the boiler and it works well for a while, them same again. Could this be another gunk in the system issue or is this an issue...

Hi, I have just had a Glow-worm 38CXi installed in my flat. Nice bit of kit apart from alot of pluming. All was well for a week or so until I noticed the pressure was up to 3 bar. I checked and I noticed the fill tap was open. I closed this and the guy installing my kitchen released some...