Worchester 24i trouble

not to mention steam coming out the tap

Did you get a full structural survey on this new trailer ?.

Given you don't seem able to lookup up its flow switch assembly you will definitely need to get someone in to replace this or diagnose the problem.

I can't identify it, though there are some blurred things in the background of

Trace the hot water outlet pipe back, through the heat exchanger to where the mains water comes in. It must be on that. Or give iin and download the manual?

just been back down because the gas safe man couldn't come until next week...took the valve off ...dead easy just got a exact replacement for £41 at heat spares Govan... fitting it tomorrow.....wish me luck

Have you inspected the unit? Does it use a rotating vane to check for water flow?

Or is flow sensed by pressure difference in which case there will be 2 holes either side. One could be blocked.

they seem to have a bit of plastic inside which is hinged and I assume makes a contact to turn on the flame when the water is flowing and breaks when the flow stops.....there are four screws on the unit so I will take the old one apart tomorrow ...

If it now moves freely then refit it and it may well work trouble free for a few more years.

Why can't you test the contacts with a multimeter? You do have one?

that is it fixed....video to follow of the great jubilation in the van here now we have hot water again and not just steam coming out of the taps........tee hee