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having bled this pipe a number of times with the 3 port vaalve in vaarious positions we now have loads of piping hot water for heating and washing! My only concern is that every time I go back and bleed this valve there is a good amount of air in the riser pipe. Could this indicate that air...

sorry one other point. I have a bleed pipe just above the 3 port valve. I have bled this every day over the last week or so since I changed the water pump. It always seems to have plenty of air come out of it? Is this normal? could this be why water is taking so long to heat up? What could...

thank you for your response, your help is much appreciated. After closing off all radiaitors I have now been back around them all and bled each one. They all work individually and come up really hot. I think they need balancing now though as only the two on the top floor work when the...

I was bleeding with pump on. How do I ensure it bleeds air only?

OK I have the last radiator working now. Do I just carry on and get the others going?

calm down. I have to try the suggested solutionss before I can respond. I appreciate your help but don't really need to be told off! 3 port valave was fittted last year when I flushed the system and also added fernox which is why I am confident it is not a blockage!

Isolation valves are definately open. Pump is right way round and 3 port valve is working. Also water heats up for washing etc. Heating last worked last winter and only thing I have done is change the pump. Boiler is a concord WRS ??

Condition of water is perfect as I added fernox chemical last year. I did not check the header tank but it is well covered with lagging. I have had the downstairs/furthest away rod hot at one stage. Thi did however go cold again due to me venting the rads and I could not get it to heat back...

I fitted a grundfos 15-60 as i have 7 rads. When you talk about fitting new valves do you mean the isolator valves? I am sure pump is working and suspect I must still have some air in the system. I can see no air coming out of the radiator just water? How many litres would I need to...

sorry - I have bled pump using release screw on the side of it and there is defiantely water in it. also pipes leading away from it are hot. I have also had radiaotrs upstairs hot but have now closed these off as suggested earlier. I can find no way of bleeding my boiler? roughly how many...

Have shut down all rads. I have bled about 4 buckets of water off the radiator furthest away but it is still not heating up! It did heat up at one point but then went cool again so I carried on bleeding water off? Pump is hot so the hot water is available? Should I just keep bleeding - only...

I vented the system by attaching a hosepipe to the drain plug, opening thedrain tap and turning on mains the water. the only vent near the cylider is above the 3 position valve on the water tank side - I have bled this. Water is crystal clear as I put fernox in hte system 18 months ago. Could...

I drained it. Nearest heater to pump is now red hot but others are still cold? Can I back flush the system using mains pressure through one of the drain valaves on the last radiator to get all air out?

thanks for your response! I did let air out of pump before. I have actually fitted a new pump tonight however still no hot radiators?

Can someone please help? My Central heating is not working. I have just replaced the pump but its still not working. There is heat at the pump but all rads are cold? _____________________________ Lynda, moderator Please continue with your original post, which is here

pump has following information on iy. can anyone tell me if this is an old one and also what would be an equivalent model. Grundfos Type UPs15 45 x 16 Model A No D219 50hz 2.5mf speed 3 = 0.33 2000 N/m2 hope this helps?

I have run off a couple of buckets form the radiator drain point furthest away and the water definately started to heat up coming out of the hose pipe. Once I stopped however the water an rads cooled back down. I suspect the pump even through its running I think it may have worn out...

Can anyone help? Have bled rads but they are not heating up. Pump is turning?