The Efficient Home Forum

Richard
Thanks for your response and advice to move the BDR91s further apart.
The system is now working properly. (Although, unfortunately, following a very cold home overnight without any heating)!
I don’t know if the following ‘fix’ will help others with a similar problem, but here goes.
The fix ...

Update!

Have replaced afore mentioned Insertion Sensor but problem remains.

Here are requested wide angle photos:
https://photos.app.goo.gl/gv1UjgXUEb9s3o7A3 Please note that system has been up and running smoothly for 18 months up until now!

In addition-
I have included a shot of my Controller ...

Does anyone have a real solution to this problem?

I have a setup as per original person's (billybob) post and an encountering same problem - HW is parameter set at 50c but reports at 70c which is boiler setting!

My system has been running perfectly for the last 18months so doubt it is the ...