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You are right Mr. Sheds. I would call them "lumpy waves".

I agree with comms. Get your own people qualified to do the PAT. An insulation resistance test on a 220 / 240 volt piece of equipment is carried out at 500 volts. Putting 500 volts into a box full of electronics is not a good idea. Even if this level of voltage does not destroy it, the effects...

Ooo err missus! I take it that the lower pipe is the intake? I agree that the sum of the area of outlet holes is a lot smaller than the size of the flue and seem insufficient. Also if the wind ( and I know that you get lots of that!) blew straight onto the end of the exhaust you would have...

Thanks jon. I prefer Fernox products but the Wickes ones are easy to get on my frequent visits! I must change my ways and make sure I that always have Fernox cartridges.

The odd thing is that if I remove the access cover, it runs without cutting out. The above quote says it all. If exhaust air is being pulled back into the intake then the combustion air will be very low on oxygen. Keep looking for leaks from the outlet into the inlet of the balanced flue. Is...

That's interesting aquasolving. Fernox is most likely the better product then. Do they do a version that just injects via the filling loop like Wickes & Sentinal do? If so is the filling adaptor the same? I find that method real simple.

I agree with ban-all-sheds. Strange code words are OK if everyone uses the code book. We do not. If you are studying a technical subject with a view to making it your career, then you should learn to write accurately and concisely. When you reach a level in your career when you are expected to...

I concur with the above comments on blockage. I had one where the cartridge would not come out as it was jammed, the neck broke off in the end. I removed the whole fitting to clean out the lump of cartridge top and found that it was almost full of whatever is in the cartridge. I changed it all...

Seco is probably correct in his diagnosis but if you want to make sure, why not remove the motorised head from the valve and see it it functions correctly when it's not trying to drive the valve?

Bob, lay a "temporary" pipe out from the tank to your fire valve (cover it well to protect it from the frost). You can the get the boiler going and do the digging when the soil is warmer. Don't adjust the fuel pressure without using a pressure gauge which connects to the fuel pump "P" outlet.

I only work on oil appliances but I'm fairly sure that the hot water system is the same. How about this? The Pressure Relief Valve (PRV) is leaking slightly. It is the part usually with a red plastic knob that may have something like 2.5 or 3 bar written on it. It vents outside the house. Put...

Yes, car batteries don't last too long I suggest that you replace it with a "long life" one. Hawker Siddley used to do some good ones. It's always the cold weather that catches them out. Take note if your car engine is slow to turn over in the Autumn. If you then top up the electrolyte and...

Do you mean the ESC Safety Leaflet entitled "Why do Earthing & Bonding need to be checked."? If so then the two relevant pages can be copied using the full Adobe Acrobat software (or similar). The Acrobat Reader will not do it. Failing that, print off the two pages and scan the text and then the...

Test some other sockets. Are any more incorrectly connected? If so go back to the Consumer Unit and start there. You were doubtful enough to ask the question in the first place but now that you have been told you have to be confident as to what to expect. If not get an Electrician in. If you...

Peter, Yes the others are trying to help. All this TT business will mean nothing to most people but a photo of the incoming supply to your house showing the Live, Neutral and Earth means that we can give you more info. (P.S. Don't rely on the metal hinges to give a good bond, you'll probably...

You are OK JB. The outer part of a balanced flue is where the fresh air is drawn into the boiler, so no problem with heat, you can put things right up against it if you want. However a 50mm air gap around the flue wouldn't go amiss. You must have the ventilation inlet and outlet as shown in the...

Someone's got to tell him to earth it! The Container needs "earthing" as opposed to "bonding". Earthing is where a high fault current can be dealt with by the protective devices (fuses / circuit breakers) and "bonding" is where conducting objects are electrically connected to keep them at the...

JB. Before someone else pipes up I'd better mention the flue. I hope that as you have a nice new installation that everything is OK but there are rules about flues passing through the building. Obviously it wouldn't do to have any flammable structure close to a conventional flue. Grant flue...

Well Jb no takers eh? If you have the Grant manual, which the installer should have left with you, turn to page 16. (If not download the manual from here. http://www.grantuk.com/TechnicalManualDownloads.aspx ) The installation that you are talking about is "Boiler in a Compartment." You...

Oilman's right. You need to stop any more cr*d getting into the system. When the weather is warmer and your leg is mended, make sure that the open top of your sight gauge is protected as Oilman said. If the filter that you opened had a paper element in then change it for a new one. If you do...