Diverter

[ALB10N]

Hiya...
I've been meaning to change the diverter valve in my Vaillant TURBOmax Plus 824 E for some time now (over a year, i'm very slow),...
What i'd like to know is, could a diverter problem cause the radiators to be on, even when the timer is switched off, or could that be electrical?

Cheers

BiLL

 

[5544]

if your heating is getting warm when not calling for central heating. it is probably being caused by the diverter valver passing every time you call for direct hot water by running the tap. So yes it could happen even when the programmer shows heating off.

 

[onlyfitidealboilers]

Or preheat

 

[ALB10N]

Ta for that....

Another question;
How easy is it to fix a leak in a sealed system? (no tank, etc)
I've looked for leaks everywhere i can, but can't find it... no water anywhere....
Can it lose pressure because the diverter is faulty?

 

[5544]

sound like an easy job but is not. you need to have someone round to confirm the problem as these valves are not cheap. if it is the valve passing then the system needs draining down to a point where you can work on the boiler. I would not isolate on the boiler at its valves as they will probalby leak afterwards.
it might sound like a fob off, but its worth spending on the labour costs of a registered gas enginneer in the long run.

regards

 

[Agile]

Vaillant isolation valves are one of the few types that usually do NOT leak!

There is a very simple way to diagnose a faulty diverter valve. Search forum and might even be in the FAQ too.

Tony