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it could just be stuck or the system might be sludged up that will cause the pump to fail to test it turn off the valves each side undo the large chrome screw get a smaller flat head fscrewdriver and try spinning it see if it turns ok if it does quickly turn on mains with the...

Hi there are several causes that make these low content boilers bang most times it is the pump,, but if there is a blockage then the pump may be cavitating meaning its just circulating in its own bubbles , i had a pump once that was running but the impeller had broken off...

ventilation to back boilers is very important and i would say that the others that have attended to service it have not done their jobs properly by making sure the ventilation complies with BS 5440 regs which requires a calculation of the net CV gas input of your appliance minus...

dont get mixed up with the service valve and the double chek valve the double check valve should be on the heating side of the pipework on the other end should be the mains water inlet valve just open it up till you hear the water going in check the pressure then close it off rearly...

Hi you can cut it out altogther and take it further down and fit and auto vent system on it most modern houses have them and finnish it about 12" above the hight of the bath they are not that exp about £20 but well worth it instead of the ugly boxin just make sure some air is...

it does sound like a faulty actuator (motorized valve) it usually only works in the last place that it was working before the motor went, it all according what type it is, as there are several on the market, most you can just change the heads and rewire into a wiring centre if you...

Hi ye sit sounds like a new diverter valve diaphram is required although it just as cheep to replce the whole unit not a difficult job if you look at the end of the diverter there is a micro swich turn on the way=ter and see if the pin is comming out and switching the micro switch use a...

HI as the other post says just relace the motor its only 2 small screws and the electrical connections but beware turn OFF the boiler at the mains as ther is a permanent live in the valve as you say the boiler will not fire thats because its not motored over to close the switch that...

hi just go to the plumbing merchants and buy the box spanner it fits bath and basin nuts all you will have to do is disconnect the pipe and slide the box spanner over the whole thing that will undo any stubborn tap nut it was more than likely put in with red lead putty or just...

Hi what you are looking at is a fill up loop which should be removed after filling ??? on the side that goes into the 22 mm pipe there should be a chrome doulble check valve do not touch that one ||| on the other side thats coming from the 15mm cold feed pipe there will be a chrome...

Hi it seems a bit strange to me if the boiler was working ok before and like the other post has said the boiler would have to have been drained before attempting to represurize the vessel its only got o.7 bar in it anyway i am wondering if he has forced a lot of air in and...

Hi if its pumping over and the tank is geting hot i can be becauase the pump is set to high for your type of sytem and depends where the cold feed is going into the system and the head of water on the pump just try turning the pump down to number 1 and check it then before you...

Hi i would have thought it was the other way round as with a surrey flange at least you only have to turn off the tank supply and open the taps to a level and of course if you are using it for a hot feed to a power shower its the best option as it has the dip pipe so no air can be...

hi i have a best 60 and it sounds like the aquastat has gone faulty it has a thermistor in the side maifold its the one with only 2 wires on the other part of it is in the white box with the board ,, try replacing the thermistor, Parts Center Part No 500572 hope...

Hi it sound like the diverter valve is passing through when on water only, try it , put it on and feel the flow pipe to the heating pipework as its coming out of the boiler, it should not get hot at all, only when calling for heat after the water has been turned off, these are quite...

Hi it sounds like the usual problem with an indirect cyld they tend to get a pinhole in the coil inside the copper cyld then usally the heating header tank is higher than the water level in the domestic storage tank then when you have the heating on it pushes the domestic water...

Hi i have a little saying " heat and ventilation reduces condensation" most pot cisterns will condensate up to where the cold water level is as the cold water comes in to the warm room,, it sounds like you need some form of permanent ventilation in the room or a automatic fan...

Hi it does sound like the pump is playing up and causing the overheat to switch open,, So as gas 4you says its prob a coincidental thing that its playing up now

Hi i had a conservatory built and K glass was used all round i seem to have a problem with the outside panels misting up there is a definate square with about a 2" gap all round thats not misted up its strange i have seen a lot of conservatories and have had double...

Hi i personally would use a ballanced flue and not an open flue providing you have an outside wall for the flue to go out of. i do not like concrete block flues they have caused a lot of problems over the years with spiders forimg webs in the summer themn people go to light the fire...