Its a valiant combi boiler no modle number, its been removed.
2006-12-22 02:08:46 · 17 answers · asked by yoda1canobe 4 in Home & Garden ➔ Maintenance & Repairs
On the old Vailant boilers if the pump fails then you would not get anything as the diverter valve is hydraulically operated and relies on the pump to do this. This in turn operates the micro switches on the right hand side of the boiler that switches the boiler on. In the domestic hot water mode then the diverter valve travels In the opposite direction and the heat is supplied to the water to water heat exchanger heating the domestic water.
On the radiator side are the bottom corners warm / hot if so then it most likely will be sludge. Have you ever had a radiator off? say for decorating, was the water black? another sign that it could be sludge. A new pump if its an old Grundfos will set you back the best part of £ 170 as the head is not replaceable. so I would investigate the sludge side first.
Warning the black iron oxide (sludge ) is the kiss of death to carpets so take precautions if you plan on doing it yourself.
2006-12-22 03:10:26 · answer #1 · answered by Anonymous · 0⤊ 0⤋
In the boiler is one or two pumps. One for the hot water and one for the heating. The heating one will have a speed control on it. Turn this to position 3 and the problem might be cured. Check if the highest radiator in the system is hotter and maybe hot all over. If it is then check that the pump is working. If you have thermostatic radiator valves see that the valve at the other end (the lock shield) is fully open. If it is not then open it. Best of luck. Happy Christmas.
2006-12-22 10:16:04 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Easy fix....you can do it yourself.
Make sure central heating pump is OFF. Then bleed air from system on each radiator. Get a radiator key from any good hardware store for about £1.00.
Use a rag and hold it under each bleed valve and loosen the valve until only water comes out. If air is in the system you will hear it hissing as you open the valve.
You may need to do this twice over a period of a couple of days as air can still be trapped in the pipes under floorboards etc.
After that should be OK!
2006-12-22 10:32:11 · answer #3 · answered by jamand 7 · 0⤊ 0⤋
Sounds as though you need to bleed your radiators.
You could have some air trapped in them.
Radiator keys are available from just about any where.
Open the valve on the radiator,and keep a jug or beaker under the valve to catch anything that comes out.
When it's clear,water should come through,re tighten the valve.
2006-12-22 10:52:10 · answer #4 · answered by nicky dakiamadnat600bugmunchsqig 3 · 0⤊ 0⤋
I think you have air trapped in the line. The pump is working or you would not have hot water at the top, so the return side is not working, since there is no pump on the return, it must be blocked (probably by air) ope the release valve slowly until the air is out.
2006-12-22 10:14:13 · answer #5 · answered by T C 6 · 0⤊ 0⤋
A agree with Jill, I had a forced hot water system and I used to beeld all the radiators once a month, Your system is very good for heating, wish I had one like it now.
2006-12-22 10:14:53 · answer #6 · answered by captbob552 4 · 0⤊ 0⤋
yep, sludge. If the heating is working at all, just live with it till spring.
It's a brave man who messes with his central heating at THIS time of year.
Your whole system needs flushed out, by the sound of it.
2006-12-22 10:12:42 · answer #7 · answered by Not Ecky Boy 6 · 0⤊ 0⤋
Sounds like air in the system. Just bl*ed the radiators.
2006-12-22 10:25:15 · answer #8 · answered by Anonymous · 0⤊ 0⤋
sounds like your radiators need bleeding. you nned a special key to let all the air out of your raidiator and it should all be ok then!
You dont need an expert, just the key and a cloth to wipe the bubbles that will escape!
2006-12-22 10:19:11 · answer #9 · answered by Unhinged.... 5 · 1⤊ 0⤋
Mine were hot at the bottom and cold at the top. I needed them bled out. Now they are fine.
2006-12-22 10:23:31 · answer #10 · answered by S 4 · 0⤊ 0⤋