Recent content by gricks

"switching it off/on stops is modulating" Why? Assuming the on period is not ridiculously short... http://www.greenbuilding.co.uk/GBF_Forum/discussion/10863/what-does-it-mean-when-a-boiler-can-modulate "there will be times when only one or two (rads) are calling for heat. The boiler will try to...

same symptoms as Billy66. Glowworm manual could be better written as Fault Finding Code F9 just says "Water pressure sensor fault - Faulty sensor connection, Check wiring". Was able to raise the pressure from 1.0 BAR to 1.2 BAR so the pressure sensor seemed fine. Something sounded rough; fan...