Central heating problems
#1
Central heating problems
The boiler light went out yesterday and we had no heating. Someone changed the thermal cupling valve or what ever its called lol and the boiler light is now back on but the heating will still not work. The thermosat is up high and the heater settings are on. The pipes by the pump upstairs are quite warm and the pump is quity noisy and now and then the pipes bang.
any ideas is it the pump ?
thanks
any ideas is it the pump ?
thanks
#2
If the boiler's firing, sounds like the pump or air in the system. Bleed all the radiators and high points on the system to see if it's air.
If not, a new pump should set you back £55 for a posh one with variable speed. Quite easy to replace, system might need draining if there are header tanks with no isolation. If you bleed the system, flush it through with a recommended product.
Nik
If not, a new pump should set you back £55 for a posh one with variable speed. Quite easy to replace, system might need draining if there are header tanks with no isolation. If you bleed the system, flush it through with a recommended product.
Nik
#4
Scooby Regular
iTrader: (2)
If it's a Grundfos pump, (likely), you can check if it's turning by unscrewing the large silver screwdriver-slotted nut on the pump face. Only a trickle of water comes out.
Inside, there should be a rotating bit, very small, but a small scredriver in contact with it tells if it's rotating. If it's not, try to free it off with said screwdriver or long-nosed pliers.
Failing that, it's a new pump which is a ten minute job IF the system has isolating valves either side of the pump, and IF you have large enough spanners.
Alcazar
Inside, there should be a rotating bit, very small, but a small scredriver in contact with it tells if it's rotating. If it's not, try to free it off with said screwdriver or long-nosed pliers.
Failing that, it's a new pump which is a ten minute job IF the system has isolating valves either side of the pump, and IF you have large enough spanners.
Alcazar
#5
If it's a Grundfos pump, (likely), you can check if it's turning by unscrewing the large silver screwdriver-slotted nut on the pump face. Only a trickle of water comes out.
Inside, there should be a rotating bit, very small, but a small scredriver in contact with it tells if it's rotating. If it's not, try to free it off with said screwdriver or long-nosed pliers.
Failing that, it's a new pump which is a ten minute job IF the system has isolating valves either side of the pump, and IF you have large enough spanners.
Alcazar
Inside, there should be a rotating bit, very small, but a small scredriver in contact with it tells if it's rotating. If it's not, try to free it off with said screwdriver or long-nosed pliers.
Failing that, it's a new pump which is a ten minute job IF the system has isolating valves either side of the pump, and IF you have large enough spanners.
Alcazar
forgot tro add, all pumps have the removable screw in the centre, its so they can be purged during commisioning,
a good set of swan necks or water pump pliers will make the job easy
Mart
Last edited by mart360; 12 November 2007 at 08:23 PM.
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