Radio interference when pump switches off

[Agile]

Unfortunately some instructions for boilers are just too simple.

If the boiler has connections for an external pump then thats where the pump should be wired to as it usually means there is a pump, over run.

On later boilers its a analogue or digital timing circuit.

On older boilers a thermostat runs the pump until the boiler cools to about 70C or similar.

I very rarely see an older boiler like the Classic in the "HE" version. I know what they are trying to do, promote the sales of a cheap to make boiler! But they will never be as efficient as a modern low water content boiler.

Tony

 

[doitall]

A lot of the problem could be down to sludge in the store and or pumps.

 

[Andagain1001]

Thanks all for your ideas.
Store is only 4months old and system had no sludge when it was installed so surely it can't be sludge?

Plumber came and Ideal boiler is cutting out when flow is at 69 degrees acc to the digital thermometer...same prob I had on an Ideal classic SE a few years ago-they replaced the potentiometer I think...reckon it could be the same thing?
Thank you