hi,
Hoping someone can help as I waited 10 days for a plumber who justleft and says he doesn't know what the problem is!
We have an oil fired central heating system, it does not heat the water, just the rads (of which there are 16) We have an aga which heats the water. When we switch on heating, only 4 rads get hot, and only at the top, the bottom stays luke warm. (rads have been checked for sludge - there is none). system is 3 years old & worked perfectly last winter. Have tried bleeding all rads, no air. Have tried turning off all rads and then, one by one, turn them on again starting with furthest away. this seemed to do the trick...until more and more rads got turned on...then the ones switched on first just got cold again! Have tried balancing the system too, this had very little effect.
the boiler is only coming on for about 5 mins each time, even though the temperature clearly has not been reached, then it goes off again for about 20 mins. This seems to be the problem as it can't possibly heat 16 rads if it is only coming on for 5 mins....but why is it doing that?
It may be worth mentioning that we had a new bathroom fitted in the summer, and a pressure pump was added to increase the water flow to the shower. however, the ftter told me that he didn't touch anything to do with the heating system and the hot water for the new bathroom comes off the aga.
So basically....we can have SOME of the rads on, but only if we turn others off and we can't understand why the boiler is only on for 5 mins at a time?
Could it have been the bathroom fitter?
any help would be greatly appreciated as there is zero chance of getting a heating engineer out now
Jacqui
Hoping someone can help as I waited 10 days for a plumber who justleft and says he doesn't know what the problem is!
We have an oil fired central heating system, it does not heat the water, just the rads (of which there are 16) We have an aga which heats the water. When we switch on heating, only 4 rads get hot, and only at the top, the bottom stays luke warm. (rads have been checked for sludge - there is none). system is 3 years old & worked perfectly last winter. Have tried bleeding all rads, no air. Have tried turning off all rads and then, one by one, turn them on again starting with furthest away. this seemed to do the trick...until more and more rads got turned on...then the ones switched on first just got cold again! Have tried balancing the system too, this had very little effect.
the boiler is only coming on for about 5 mins each time, even though the temperature clearly has not been reached, then it goes off again for about 20 mins. This seems to be the problem as it can't possibly heat 16 rads if it is only coming on for 5 mins....but why is it doing that?
It may be worth mentioning that we had a new bathroom fitted in the summer, and a pressure pump was added to increase the water flow to the shower. however, the ftter told me that he didn't touch anything to do with the heating system and the hot water for the new bathroom comes off the aga.
So basically....we can have SOME of the rads on, but only if we turn others off and we can't understand why the boiler is only on for 5 mins at a time?
Could it have been the bathroom fitter?
any help would be greatly appreciated as there is zero chance of getting a heating engineer out now
Jacqui