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Possibly 1 The return from one zone is finding a path through the radiators of the other zone. Follow the hot water shortly after switching on to see where it goes. Turn the radiator valves down to offer more resistance so they the return pipe is the reasier path. 2 There is local convection...

There should be an auto air vent inside the boiler - maybe stuck closed. On our old ecotec pro, its above / behind the pump. We had air in the system causing pressure drop two days after radiators were changed as the air finds its way out although our air vent worked so we just had the pressure...

Turn off all the other radiators apart from one of the bad ones. When that starts working, open the other one. When both are working, open the other radiators a little each.

On second thoughts, just check the collar is tight - may just be loose.

You could try two things Remove the head by undoing the silver collar and squirt wd40 on the pin inthe valve see ifthat helps. If you have other similar valves, swap over the heads to where the fault is. Then you can buy a new valve and just change the head. All this does not involve any...

Looks like tenant needs to clean the outside of this one ! Or is that down to the landlord as well ? (I am neither ).

The broken key in the valve is probably jammed in with corrosion or limescale - dig out the bits with a thin screwdriver. You could top up the system some other way if it goes below limit.

I just had a quick look on Ebay - you can buy just the handle you broke, its called a key. Looks like a fancy radiator key. It's probably designed to break before the valve. In the meantime squirt a little wd40 over several hours to let it soak in. Then try your radiator key, back and forth a...

How on earth was that awning put up with a whole row of gas boilers discharging under it?

Steel pipes are threaded at the ends and joined by screwing joints onto them. You'd have to unscrew it at a joint then screw on a threaded f cap or threaded m plug.

My son just bought a house with the boiler in the loft and its 14 years old - it is a pain. A filling loop and pressure guage has been installed in the old airing cupboard where all the pipes come down - that helps to keep an eye on the pressure. A good point is that the water is clean up there...

Any switch needs to be outside the bathroom ( or a pull switch). The outside switch could be a time switch. I think the thermostat is internal to prevent overheating, no room temperature control as such.

You could look at the electric meter to see the increase in wattage.

A full tank flush creates more pressure so causes leak. When you take the cistern off you will find the the large round doughnut shaped washer that seals between the two.

i.e. If the hot tank is over-heated it can set up a convection current to the cold tank depending on the pipe runs. This would explain the warmed cold tank.

Try running the shower cold and listen. Then try with hot water. If you get the sound with hot only then its plastic expansion sound - like gutters whenthe sun comes out.

Give it a light tap with a hammer to get it to bite.

Just stripped one of our bedrooms, it was pink roses ! We are now going for plain emulsion but i think will need lining paper to even things up as there are various colours and plaster underneath. Is traditional lining paper best or the Fibreliner paper ? As its a small room cost is not an...

Make sure you can turn the gas off at the meter in case you do have a leak ! The cooker connector turns off inside as you press in and twist the outlet part.

Once you have cut the cast iron, measure the internal diameter 80, 85 or 90mm and get the connector of the size and length required. Search for "cast iron toilet connector". As the outlet slopes downward, you mayneed another flexi like the one you have.