baby home tomorrow and boiler playing up.....help

[memebaby]

we have a vaillant ecotec 637 boiler. Been installed bout three years. For a few weeks now it has been making a lot of not very healthy noise so loud that you can hear it in our loft bedroom even though the boiler is in the garage.

This morning the radiators were cold even though heating on. My partner checked the pressure and it said 0 bar. He filled it up on the filler loop up to one and a half bar. When he came home tonight the heating had turned itself off there was water over the garage floor and the pressure bar was at 0 again. We have identified that the leak is coming from the bottom of the pump. We took the pump off and inside the wheel of the pump were small bits of dbri. we cleaned them out as best we could and put it back togehter.Its stopped leaking but it still sounds bad and the noise sounds like it is coming from the pump ??? . the radiator symbol is flashing on the led

By luck our baby is staying at her grandmas house tonight but is due home tomorrow and its obviously pretty cold. Money is very tight for us so we are looking for some advice of a few things to try. My partner is a builder and knows basic plumbing but we are at a loss at the moment.

Does any kind soul have any ideas of why this might have happened and what else we could look at.


many thanks

 

[adlplumbing]

daft questin did he bled all rads after removing the pump

 

[memebaby]

no becasue he isolated the flow and return underneath the boiler and bled boiler from these points

??

 

[yerino]

Sounds like the pump. If its not pumping correcting (not circulating properly) your boiler is over heating (and ketterling, this is probaly the noise you are hearing) and cutting out via overheat thermostats. Change the pump, if it dont work - change it back and take the pump back!

 

[tamz]

ketterling

The noise you were hearing was caused by lack of water in the system. As your bedroom is in the loft (3rd floor?) if the pressure was down below 0.5 bar the top floor pipes would be about empty and you would hear the water gurgling around.

Are you sure the water was coming from the pump?
Under normal circumstances this cannot happen.
With the boiler being fitted in garage is pressure relief valve connected? Perhaps not!

Check around the system for air by bleeding radiators. If system has been running with low pressure the top- floors will need bled.

Some dirt in pump is normal in systems fitted for a few years.
Think about spending a day giving it a flush then put some inhibitor in. Check FAQ for how to do it.

Maybe better get one of these just in case
http://www.hardware-ironmongers.com/details.aspx?code=6030355