R
Rickster123
Time to get a gas safe engineer in then I'm afraid
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0 is boiler has no demand. Icos is a heat only boiler not a combi. If display does not change to c then boiler is not getting a demand. Faulty external controls. Get someone in to check. A better picture would help
It's the honeywell control known for relay faults when green light comes on does it click if not phone them they have 5 year warranty on these due to this fault. Done a few. Unusual for both to go though hu
What is your room thermostat set to?
Reply to the thread, titled "Ideal Boiler No Hot Water" which is posted in Boiler Advice Forum on Plumbers Forums.
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