When a leak occurs on this type of system, there are a couple of ways it can be isolated. I’ve got a heat only boiler with hot water cylinder tank (with these types of boilers you will have a programmer to turn your hot water on and off on a timer) If the leak is on the radiator valve, on the side where the nut is attached to the radiator, it can be isolated by turning both valves off. Keep an eye on your boiler pressure as you might need to top up the pressure on the combi to keep it working until the leak is repaired. If the leak is not severe, you should be able to place a towel or bowl underneath it to catch the water. If this is the case, give us a call to report the repair. If the leak is severe, the pressure will drop instantly, so it will not be appropriate to attempt to top up the pressure. Turning the main stop tap off in this instance will not stop the leak on a radiator or associated pipework.Ĭheck the pressure on the boiler, as the leak will cause the pressure to drop and potentially stop the boiler working. Usually, once the pressure has decreased, the leak will stop or slow down. As the filling loop should always be in the closed position when it’s not being used, the system will not keep filling in the event of a leak. This is because the system is filled via a filling loop, which is manually opened and closed when more water is required. When a leak occurs on a central heating system fitted with a combi boiler, it will eventually stop on its own. The radiator is leaking from the valves or pipework and: Here is a video if you need help to re-pressurise your boiler. Your pressure should be between 1 and 1.5 bar. If you have a combi boiler, you need to check the pressure gauge, as the leak could cause the pressure to drop. If you can’t contain the leak and it is severe, then give us a call to report the repair. If both valves have been turned off the radiator will be successfully isolated. The leak won’t stop immediately, so you may need something to catch the water.
#Radiator leak how to
Watch our video here that shows you how to do this. The plastic cap is just a cover which must be removed to turn the valve off. There may be a white plastic cap over it, which needs removing first. On the other side of the radiator, turn the lock shield valve off (in a clockwise direction) with a pair of pliers or a spanner. The thermostatic valves (TRV) should be turned to the 'off' position. Turn the radiator valves off to isolate the radiator. You will need to try to isolate the leak. The advice is different depending on what type of boiler you have, as leaks on radiators can affect heating systems in different ways. Your radiator can leak from either a valve, the pipework or from the radiator itself.
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