water meter repaired now no hot water

[DazQ87]

Hi guys, thought I would pick your brains about a problem we are having.

We recently had our water meter repaired or replaced (not 100% sure what Anglian water actually had to do) due to the fact it was leaking to the point where we couldn't take a reading properly.

This work was done on Friday, and since then our hot water taps/shower have been getting colder and colder to the point now where there is no hot water left at all.

We moved into our current house about 5 months ago, the house was sold to us buy a building company who took it as a part exchange, so we never got to speak to anybody who lived in the house about how the heating/hot water system actually works. Although we were supplied with some rough details and instruction manuals it seems it is more complicated than I understood it to be.

We have a modern condensing boiler in the kitchen downstairs (which I assume is for the central heating which we haven't had the need to turn on yet), and a immersion heater in the airing cupboard upstairs, which has a thermostat on it and timer controls for the hot water and central heating on the wall next to it.

Up until recently the immersion heater seemed to be doing it's thing (I think it acts as a hot water storage from the boiler downstairs although I'm not 100%) but now the tank is stone cold, even though 1 or 2 of the pipes connected to it feel pretty hot. All of this was serviced before we moved in.

I am an absolute rookie at this sort of thing, with no idea what to check, not helped by the fact that I don't know 100% what the layout actually is. Can anybody think of any easy to check points of the system.

Also it seems a bit coincidental that this has happened since we had our meter repairs carried out. Could it be possible that Anglian water has somehow done something to our supply? or is it just a wild coincidence.

Sorry for the lengthy post, thanks for reading.

 

[DazQ87]

If it's anything like setups i've lived with, the controls are next to the immersion because that's a convinient place to put them. I'd be suprised if the boiler didn't run your heating and HW, with the immersion for backup.

Have you checked that the pressure in your boiler is correct? If the maintenance got an airlock in the mains feed it could have bled through into the boiler and dropped your pressure.

I think you might be right with regards to the setup, I the boiler always used to come on (and still does) after using the shower/hot water, with the immersion as a backup. I think you might be onto something regarding an airlock, the pressure is reading 0 bar, is there a mode I might be able to put the boiler into to bleed out the airlock or do I need to bleed some pipes somewhere?

 

[DazQ87]

Thanks guys, I have been having a chat with some of the guys at work and all come to the same conclusion, I do have a copy of the manual at home so will have a good trawl through it when I get home.

 

[DazQ87]

The boiler in question is a Remeha Selecta, after having a look around a bit more it looks like we have a setup similar to this:



Only our immersion heater doesn't actually have a heating element it's just used to store hot water although (not sure if the thermostat on the side of it connect to the boiler downstairs or if it's just there as a leftover).
The diverting valve is also upstairs next to the tank.

The statement at the bottom of the page is rather meaningless to me as I'm not sure what a standard mains fill kit looks like.

Just took a quick pic (excuse the terrible camera phone) of the bottom connections on the boiler itself if anybody is able to easily identify the valves I need to use.

 

[DazQ87]

Thanks guys, no need for a screwdriver. Set the pressure to 1.2Bar.

I can't believe it was that simple I feel like such an amateur. Bit of a learning curve for me but it feels good sorting this sort of thing yourself and at least I've learned how the system works.

Also now my missus won't be nagging me anymore