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- 20 May 2007
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Hi,
Hot water/Heating/Boiler ... problem with water flow; any advice please:
Boiler is 15 years old ... pump & mid-position valve are new.
Our boiler fires up but turns off after a couple of minutes ... when the water in its pipes gets hot. If it's left to cool it will fire up again but turn off again after a couple of minutes.
The pump is working ... it is going round and is triggered when the Hot Water or Heating is turned 'on'.
The pipes in/out of the pump do not get hot when the boiler is operating for a couple of minutes.
The mid-position valve is working ... the lever moves to indicate which position it is in.
The control units all work (wiring checked and the heating/hotwater/thermostat controls all work to trigger the boiler & pump.
There does not seem to be any obvious/visible blockage in the boiler flue.
Water drains satisfactorily ought of the system ... drain valve below boiler ... and the header tank empties.
There IS (not surprisingly; having drained the system) some air in the system.
SO ... why is the heated water not leaving the boiler and being pumped through the system ????
Hot water/Heating/Boiler ... problem with water flow; any advice please:
Boiler is 15 years old ... pump & mid-position valve are new.
Our boiler fires up but turns off after a couple of minutes ... when the water in its pipes gets hot. If it's left to cool it will fire up again but turn off again after a couple of minutes.
The pump is working ... it is going round and is triggered when the Hot Water or Heating is turned 'on'.
The pipes in/out of the pump do not get hot when the boiler is operating for a couple of minutes.
The mid-position valve is working ... the lever moves to indicate which position it is in.
The control units all work (wiring checked and the heating/hotwater/thermostat controls all work to trigger the boiler & pump.
There does not seem to be any obvious/visible blockage in the boiler flue.
Water drains satisfactorily ought of the system ... drain valve below boiler ... and the header tank empties.
There IS (not surprisingly; having drained the system) some air in the system.
SO ... why is the heated water not leaving the boiler and being pumped through the system ????