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I have a radiator in my bedroom that keeps going cold. I bleed it to let the air out and it gets warm and then i leave it and its cold within a few minutes. Does anyone have any ideas what this could be before i ring a plumber.
Thanks

2007-01-10 04:07:01 · 13 answers · asked by clare s 2 in Home & Garden Maintenance & Repairs

13 answers

sounds like you have air in the whole system and it moves to that one rad?? bleed it wait bleed it again and again untill all the air has gone (

2007-01-10 04:15:55 · answer #1 · answered by Anonymous · 0 0

We have had this exact same problem. My husband is very practical and solved it like this: (He's here dictating to me!!)

Bleed ALL your radiators FIRST before undertaking the following steps.cos maybe there's some air trapped elsewhere too.

STEP BY STEP INSTRUCTIONS

1. You need to drain the tank so first SWITCH OFF the mains stopcock. This will stop the tank refilling. NOW switch the boiler OFF.

2. Turn all taps in house on fully. (hot and cold) (Till water stops running from taps)

3. Open all the bleed valves in all radiators. Put bowl or other container at each bleed point just in case.

4. Find the radiattor with the drain tap on it (usually located at the bottom), normally found on a downstairs radiator.

5. Put a hose pipe on this tap and lead the hose outside. All the water in the system should drain completely out with all the air locks in the system too.

6. Once all the water has drained out, screw the DRAINING tap back up.

7.Turn on the mains stopcock to allow tank and radiators to refill with water. (Don't close the bleed points yet).

8.Now keep an eye on all the bleed taps and close each tap in turn once water starts to come out.

9. Switch the hot water AND heating on. Water should start flowing again around the system. If it is reluctant to come out of the hot taps you may have to apply some suction to the hot tap to encourage the flow. (Use a small piece of hose and your mouth for this!)

This should solve your problem.

2007-01-10 04:33:18 · answer #2 · answered by Anonymous · 0 2

there must be air in your system not just that radiator. Hence it keeps going cold as the air pockets move around your home.
Bleed them all first before getting someone in. They will bleed and balance them all, they may even clean out the old water and put in new water as 'sludge' can build up... pleasant mmmm

2007-01-10 04:16:12 · answer #3 · answered by carter 2 · 0 0

I had this problem not so long back. The plumber simply turned all the radiators off then worked his way round the house turning them on, (working from the boiler). He waited for each one to warm up, bled them and went to the next one. My living room radiator is not as hot as it used to be but it works ok.

2007-01-14 02:47:50 · answer #4 · answered by loopyannielou 3 · 0 0

Check the pressure valve on the boiler. If it is below .5 then you need to let in more water till it reads about 1.5 to 2This should be done whenever you bleed radiators.

2007-01-10 04:18:02 · answer #5 · answered by Anonymous · 0 0

Systematically bleed all radiators around the house OR check the thermostat/s

2007-01-10 06:45:03 · answer #6 · answered by Ruthie 1 · 0 0

air the whole system.check system pressure is set at 1.5 bar.
if found to be no leaks.buy an alladin self bleeding valve from thomas grahams.this will solve problem

2007-01-10 04:34:31 · answer #7 · answered by ANNAMARIE H 1 · 0 0

it could be that your central heating pump is not strong enough or that your tank is too low .i had the same problem it just would not get hot so i gave up trying to bleed it etc. the rest of the system was fine though .hope that helps you

2007-01-10 04:17:31 · answer #8 · answered by Anonymous · 0 0

thermastat? maybe the whole system need bleeding
do all the radiators, and check the pressure on the boiler
should be 1.5

2007-01-10 04:15:50 · answer #9 · answered by rachealuk 5 · 0 0

Try bleeding it after you have turned off the circulating pump

2007-01-10 04:25:00 · answer #10 · answered by budgie 1 · 0 0

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