2006-12-07 00:05:37 · 22 answers · asked by MIZANUR R 1 in Home & Garden ➔ Maintenance & Repairs
Difficult to answer this as there is very little information, if this is a new problem it could be air (one tip - do NOT bleed your radiators with the heating system switched on, the pump can suck more air into the system).
If this has always been a problem the system is not balanced properly, or the radiator is undersized for the room.
If you have a thermostatic radiator valve it could be faulty or stuck.
2006-12-07 04:58:32 · answer #1 · answered by Anonymous · 1⤊ 0⤋
It will probably be air in the pipes that is stopping the water getting around properly, you need to bleed the ones that are not getting warm. Its simple:
Get a radiator key and twist the valve at the top of the radiator. Don't unscrew it completely and do it slowly until all of the air has gone. You will know when it is done as the water will come out. Put a towel or a bucket down though cause you may get dirty brown water on your floor / carpet!
Good luck
2006-12-07 08:17:56 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It probably has air in it. You need to bleed the radiator to let the air out. You do this by undoing the airbleed valve at the top of the radiator. You will need a small dish as water will also come out. When the hissing sound stops and the water is running freely tighten the valve back up. Make sure no water is leaking from this valve after you tighten it up. It may also be useful to put down a couple of old towels to make sure no water leaks onto the carpet. Good luck
2006-12-07 08:11:52 · answer #3 · answered by patsy 5 · 0⤊ 0⤋
Sounds like it has trapped air in it.....is it hot only at the bottom?
Give the system a good "bleed" when you start using it..Turn on your radiators to full, get a radiator key and go round the house letting out all the air in the radiators...you will need a bucket to catch the nasty black liquid that will come out once the air is gone.
Should do the trick
Other things to check is the pressure of the system..should be 1 bar at least...and also that the pump is working
2006-12-07 08:08:58 · answer #4 · answered by king_badger 3 · 0⤊ 0⤋
It has probably got an airlock. You need to bleed the radiator by getting a radiator key and looseneing the valve (square thing in a round circular indent) very slowly. You should hear the air hissing out but do it very gently as once all the air has escaped very dirty black water will squirt everywhere. Once the water starts to come out tighten up the valve again and it should heat up properly.
2006-12-07 08:09:55 · answer #5 · answered by Jason O 3 · 0⤊ 0⤋
you need to bleed it-if you don't know how then this is how you do it-at one end (at the top) you will find a sort of star shaped or square nozzle that turns. you can buy a radiator key in a good harware store, when you have this turn the nozzle slowly and it will make a hissing noise and a little water will come out (you may smell gas) when this noise stops you can then close the valve again and your radiator will be hot. If it's electric then I don't know, because this is the instructions for gas. Hope it helps.
2006-12-07 08:11:03 · answer #6 · answered by ? 2 · 0⤊ 1⤋
it could either be air trapped in the radiator or your thermostat is set too low. to test for air, is the top of the radiator cooler than the bottom? if it is you need to get a radiator key and "bleed" the air from the top (found at one end of the radiator. If it's the thermostat check the room thermostat (usually on a wall somewhere) and adjust temperature), and/or if there is a thermostat on the radiator itself turn it up. hope this helps/
2006-12-07 08:16:24 · answer #7 · answered by Nha Q 1 · 0⤊ 0⤋
try bleeding it .at the top of the radiator there should be a valve .you will need a radiator key put the key over the valve and turn it ,there should be a hiss this is trapped air escaping that is stopping the hot water from heating up the rad ,once water comes out of the rad its done ,close the valve and thats it .do this for all of the rads in your house .
2006-12-07 08:09:48 · answer #8 · answered by demoman 2 · 0⤊ 0⤋
Bleeding would seem like the right thing to do but do not screw the bleedscrew out all the way just enough to release the air. When it starts to squirt water tighten it up again.The water coming from it will be very dirty so have an old towel handy to catch the drips.
2006-12-09 15:19:12 · answer #9 · answered by ? 1 · 0⤊ 0⤋
Marty has it bang on, they arent hot because they are full of air not hot water, Turn the heating on then bleed the air out of them by loosening the bleed screw at the top of the radiator, you will hear air hissing out. When the air stops and water starts coming out tighten the screw up and your problems are over
2006-12-07 08:13:45 · answer #10 · answered by Anonymous · 0⤊ 1⤋