noisey boiler

[dwilkinson]

please,please help ,
we have a IDEAL MINIMISER SE boiler that has a mind of its own, every 30 mins or so boiler ignites and bangs and clatters releasing water into tank in loft(heating and water turned off).
we had it serviced last year (drained and sentinal x100 added) would it solve the problem by adding more sentinal x100, if so should it be added in the tank in the loft?
thanks in advance for any replies.

 

[Deleted member 105431]

please,please help ,
we have a IDEAL MINIMISER SE boiler that has a mind of its own, every 30 mins or so boiler ignites and bangs and clatters releasing water into tank in loft(heating and water turned off).
we had it serviced last year (drained and sentinal x100 added) would it solve the problem by adding more sentinal x100, if so should it be added in the tank in the loft?
thanks in advance for any replies.

sounds like it needs a good service and possibly new electrodes.

 

[twgas]

could be a faulty motorised valve causing boiler to fire when valve shut - causing overheating.

 

[dwilkinson]

valves seem to be working ok both come on when heating or water are switched on.

 

[twgas]

but do the end switch(es) open when the valve(s) close

 

[dwilkinson]

think so you can hear the water passing through the pipes when they open and shut.

 

[footballfan]

if one of your 2 port valves are "stuck shut" - and sending power to the pump and boiler then this would explain for them being constantly on - but this shouldn't make the boiler overheat as the stat (boiler) should cut out when satisfied.

dont know why water is pumping over though.. could be many things.