Hot water too hot

[DavidS]

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 was ‘belts and braces’, in that, I did move the CH BDR91 further away from the HW BDR91, but I also reset the Controller!
The fix:
1. Moved the CH BDR91 a further 50cm (extent of available cabling) away from other electronics. Am really sceptical about this being the direct cause [see ‘2’ below] as the system had been working perfectly for 18months until now. Also, I can’t believe Honeywell have developed a system with such vulnerability. Surely they understand not every location has the physical space to fit receivers metres apart? Agreed, the (limited) installation instruction leaflets does mention such but Honeywell do not seem to go out of their way to impress such ‘vulnerability‘within their sales literature and web offerings!
2. Reset Controller .
Factory reset – by following the normal Controller menu actions …… but I also removed the batteries (for an hour) to ensure the processor memory was as ‘clear’ as possible.
I now believe (belatedly) it was a Controller malfunction that caused my original problem! It reported an error ‘with the hot water sensor’ which caused my, in vain, ‘button pushing’ and subsequent unnecessary action in changing the sensor itself. With hindsight this memory clearance was probably all that was needed!
Incidentally, I still wonder what caused the possible Controller error? I note [as mentioned in my previous post] the Controller HW graphic has changed recently from the published ‘dot’ to a HW cylinder graphic (the factory reset did not ‘revert’ the graphic to a ‘dot’). This graphics ‘change’ implies that my Controller had received an unsolicited (or notified to me) firmware update from Honeywell at some time? Could this be a coincidence I wonder?

NB Obviously, following a Controller Factory reset you have to completely set up the Controller from scratch. This in itself is a bit daunting for your normal house holder (such as myself) and, at least, quite time consuming. I believe Honeywell could do a lot more in ‘hand holding’ their customers through these actions. e.g when following a possible Controller malfunction.
Honeywell’s web based solutions are somewhat limited (I believe).

[Richard]

Hi David,

I am glad things are working.

I can't comment on Honeywell's support, but as with any big company it won't be personalised. 'The EVOHOME Shop' customers are well and truly hand held daily I can assure you and this is all part of the benefit of purchasing through us.

The latest firmware update shouldn't be coincidental in causing your issue. The firmware update was well documented on the Automated Home Forum and was designed to add further functionality to an already great system. I have been one of a few beta testers with the firmware and I haven't had any such errors.

Richard