During the summer, I had 2 radiators replaced with new ones and another one removed and capped off as it was no longer required. The work was done by local plumbers. Now I have tried the heating system, all the radiators stay cold. When I turn up the thermostat, turn on the heading, I hear the pump start and the valve open as the pipe to and from the valve gets hot. But that is it. The hot water does not seam to go to the radiators. I have bled all the radiators. The hot water system works fine. Any ideas?
All radiators cold
- Thread starter VinceT
- Start date
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B
breezer
have you bled the pump?
the large screw in the middle of it is "the equiviliant" of a bleed valve on a radiator
the large screw in the middle of it is "the equiviliant" of a bleed valve on a radiator
B
breezer
there should be no air.
can you hear if the pump is actually running?
can you hear if the pump is actually running?
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Sorry, what I meant to say was just a drop of water and no air.
The pump is definately working as is the water control valve.
Here is some more infomation. I have closed off all rads but one. It just about gets hot - slowly. I tried the same again with 2 other rads. The same result. That means I have enough power for one radiator only!.
Does that mean maybe my system is full of slugde or my pump is not up to the job?
The pump is definately working as is the water control valve.
Here is some more infomation. I have closed off all rads but one. It just about gets hot - slowly. I tried the same again with 2 other rads. The same result. That means I have enough power for one radiator only!.
Does that mean maybe my system is full of slugde or my pump is not up to the job?
B
breezer
I am not a plumber or heating engineer, so i can not give you a deffinite answer, but as the system has been there for years? it is unlikely the pump was never up to the job, but it may be that through age the pump has given up, it does happen, you can get them from most big major diy stores
IM assuming you have not used the rads since the work was done in the summer. Are your rads drop fed, in other words do the pipes drop down to the rads after riseing up from the boiler, if so you could just have a plane old airlock. most pumps set on the lowest speed will run at a decent speed if yours runs slow at its lowest speed(by slow i meen you can visably see the same point on the shaft turning) then it has probably had it. Can you descri e the type of system you have
Had a system doing this today - could hear air in the pump. CH Pumps will not pump air! No progress after 1/2 hour, so I turned the pump round which cleared the air in a few minutes. Having put the pump in I knew its valves and washers were OK!
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