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HI, Navien NCB combi boiler needs a connection to the Heatmiser UH8 230v wiring centre to enable the heating to come on. Boiler has terminal 5 (switched live in) and terminal 6 (AC live out) Heatmiser 230v wiring diagram below has end switch and boiler enable. Can someone just confirm the...

Hi All, I have a ICI Caldaie Solar 80E boiler and have many problems over the past year where the boiler works, hot water only works or the whole thing just wont work! I am part of a heating scheme where i can have unlimited calls out through out the year and this has helped a few times...