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OK, first - I'm not sure if this is the the right forum, if it isn't then apologies and let me know where to go. I have a shower room, in which vinyl flooring has been laid on 6mm plywood (I think - this predates our getting the house) on top of the floorboards. This vinyl and ply goes...

Just to bring everyone up to date with this old thread, in case someone else has the same problem. After a few months with the replacement thermistors, the problem recurred. During the following months, Vokera looked at the boiler a number of times, checked things, replaced the thermistors...

The system is a sundail Y. In this system the motorised valve moves to feed the hot water in the absence of any demand. As the hot water tank temperature is always likely to be cooler than the boiler output temperature in any normal situations, this will act as both a bypass for the water...

unfortunately the new grab rail bases are flush and not raised, so nowhere to hide the bits of screws. Although the new grab rail was notionally the same size (18in) the screw holes didn't match the old ones; so I had to drill a new set of holes.

Borrowed a neighbours dremel which worked a treat in grinding the screws to well below the surface, have rust treated and now grouted the holes over. The new grab rail is now up :)

Nice idea. unfortunately there isn't enough of the screw protruding to get a grip on it with the chuck jaws. Does anyone have any suggestions as what to do now? Or do I have to try and file down the screws to below the tile surface and cover them with grout?

A bit of a silly question. I needed to change a grab rail in a shower because it was rusting. Unfortunately two of the screw heads snapped off from the screws (also rusted) when I tried to remove them. So I now have two small bits of screws protruding from the tiles, with not enough...

an update: Vokera have been in and looked at the boiler, and have swapped out both the thermistors. The engineer said that when they get an intermittent fault, those are the first things they replace and normally that fixes things. I also got him to undo and remake all the connections to the...

No the pump does not have a permanent live feed - it gets its live supply from the boiler. The pump does continue to run after the demand ceases. I did check that the pump was wired up correctly; that was the first thing I thought of as being a possible cause. Cheers

The pump is connected to the boiler, and the pump overrun does occur. (sorry for the delay in replying, been away from home.)

I was using the term 'look' as a shorthand for investigate/examine, and I do know how to tell if an electric motor and its associated pump is running. The complication, of course, is that the pump is powered via the boiler so the pump power is dropped when the boiler decides there is a fault...

The pump has always been working when I've looked at it . There is one radiator without a TRV to act as a bypass.

No, it is still an open vent system (that's why its a VHE boiler)

I had a boiler changed a few months ago and it is intermittently showing an error condition. The new boiler is a vokera mynute 20VHE and it replaced a potterton netaheat 16/22 in the existing system (a Honeywell Y) and nothing else was changed. It all seems to work fine BUT occasionally the...