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Ah yes ebee...now I understand! :P

It sounds like there is a small hole in the diverter valve diaphragm. The change in water flow when you adjusted the Thermostatic valve moved the diaphragm but then the extra pressure went through the hole and equalised the pressures. Buy a diaphragm and if you find that there is no hole in the...

Earth's a "funny thing" you know. It ain't always what you think....I think. Here's an analogy that is true. Once upon a time I worked in an electrical workshop and despite equipment passing an insulation resistance test, people were receiving electric shocks from that equipment. How? When...

Well DCC...did you get that?...' (A very thorough synopsis.....(debate?)...... gentlemen. Well done!

Mutley, I can confirm that what the others say is correct. A transformer is made up of thin layers of iron wrapped in copper wire. The layers of iron vibrate due to the magnetic field that alternates because the current passing through the copper wires is alternating. The copper wires get...

Patrick, you need to see what your insurance covers. It may just be for emergency actions.i.e. turning off the water not carrying out a repair. As you have been told, one of your tank inlet valves (often known as the "ball-cock" after the float that operates it) is leaking. They are simple...

OK Bally. One more thing to try. Find the Thermostatic Mixing valve. It has a grey plastic head with numbers written on it. With everything powered up, (mind your fingers!) get an assistant to open a hot tap, watch the pin on the diffuser valve and adjust the Termostatic Mixing valve. See if...

Switch the electrical power off. Locate the Diverter Valve inside the casing and remove the cover from the black plastic box on the end. Inside you will see two micro-switches. Get an assistant to open a hot water tap while you watch the small steel pin. It should push outwards and operate the...

These things use an ac current from an oscillator to create a varying magnetic field around a copper pipe. That copper pipe is an electrical conductor. Lenzes law says that if a varying magnetic field is applied to a conductor, that conductor will have an electric current generated in it that...

Yes indeed. Ay system will benefit from a cylinder and room stat. http://www.honeywelluk.com/lib/pdf/Wiring-Guide-Issue-14.pdf

Oilman is correct. If you ever need to protect an electrical cable that carries low voltage signals from electro-magnetic interference, one way of doing it is to route the cable through a bonded, metal, electricaly conducting conduit.......er..... just like a copper water pipe. Magnetic fields...

The ceiling roses are inter-connected. i.e. one supply in and one out to the next light. That takes care of two of the T&E the other one is to your switch. So the live goes down one red wire to the switch AND BACK UP THE BLACK WIRE! So you have connected live to neutral via the switch. This...

I'd go for a cartridge change. See the Aqualisa website to identify your shower and the relevant cartridge. (After removing the front control you can see the cartridge and there is a colour coded plastic bit which will match up with what is shown in the spares section of the website.) Order on...

Bazza, I don't know this boiler but the oil fired Worcester Heatslaves can get a problem where the diverter valve stem sticks down, thus supplying the rads when they should be off. If your boiler is similar, the electrical head of the valve can be removed from the valve and operated to make sure...

Stevie, I hope Agile and Gasman can confirm this, or perhaps clarify. Much depends on how your system is laid out but I would have thought that if you have a mid-position, 3 way valve then you either get "hot water only", "hot water and heating" or "heating only". It is possible to get a few...

Well done John. Holes in the diaphragm can be difficult to spot. ( I usually thread a piece of paper through the hole to show the customer.) Bad luck getting a new one with a hole in though!!!! :cry:

Stevie, I'm afraid that the thread is a bit hard to follow but if the hot water is selected "off" there should not be a supply to the cylinder thermostat. Are you saying that, with the central heating off, when you manually switch on the hot water, then increase the temperature setting on...

Check out the Aqualisa website to identify your shower and the part that you need. http://www.aqualisa.co.uk/parts-store/Controls/ The bits are easy to replace and the website is easy to use and spares easy to order. Usually next day delivery.

Yup. Micro-switch duff. Renew the actuator head.

You could try Nuway on 01905-794331. If they have nothing what about taking the parts to your local oil heating spares dealer and getting "similar" bits to modify your burner? (All you need is a good spark, it doesn't matter if the parts are exactly correct.)