My worcester 24i combi boiler keeps losing pressure over a fairly short period of time, and I have noticed when I'm filling the bath with hot water the bathroom radiator is getting warm which is the first rad in the system and the closest rad to the boiler, which means the hot water side of the boiler is getting into the heating side, which logic tells me the loss off pressure on the heating side is the water going back the other way into the hot water side, I just can't seem to work out where in the boiler this is happening, can anybody help with any advice please?
You have a water leak, that's what's causing the pressure loss. Check the relief pipe outside and around any visible pipework and radiators.
The heat in your radiator when running a tap means that the divertor valve is passing and needs replaced or a service kit fitted.
2 separate and unrelated faults.
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