I Moved Into My House 15 Months Ago Which Has Gas Central Heating. We Had A Spare Room Which Is Now Occupied By My Baby Son Before His Arrival I Turned Off The Radiator In His Room As It Didn't Get Used. Now I Want To Use It Again It Won't Turn On With The Rest Of Them Any Ideas Peeps!

If this is a water system check yor boilers pressure gauge make sure you have at least 12 lbs. of pressure on boiler. If you do it could be air logged. Most of the time at the top of the rad. At one of the ends there will be a blead valve. Open the blead valve put something under it to catch water let all the air out until you get water flow close it. This should do it. Hope this helps.