Search found 5 matches

by Peahead
Sun Jan 21, 2024 11:23 am
Forum: Honeywell Home evohome
Topic: Boiler Cycling / HR92 hysteresis
Replies: 7
Views: 689

Re: Boiler Cycling / HR92 hysteresis

https://i.ibb.co/4Pkshmx/Screenshot-2024-01-21-110839.png Thanks all for the support. I've managed to capture a lot more data now, as you can see it appears to be the demand from one TRV that is causing the constant cycling (Yellow line on bottom graph, although the red line demand also increases ...
by Peahead
Fri Nov 03, 2023 5:23 pm
Forum: Honeywell Home evohome
Topic: Boiler Cycling / HR92 hysteresis
Replies: 7
Views: 689

Re: Boiler Cycling / HR92 hysteresis

I don't think I can do this, as I don't have a "Boiler" relay, just two BDR91's feeding the Y-Plan valve, I seem to remember this setup prevented access to the cycle menu (I think! its been a while since I set it up)
by Peahead
Thu Oct 26, 2023 9:44 pm
Forum: Honeywell Home evohome
Topic: Boiler Cycling / HR92 hysteresis
Replies: 7
Views: 689

Re: Boiler Cycling / HR92 hysteresis

Thanks for the feedback, I was assuming it wasn't good for the boiler to cycle for such a short time each time and would cause premature wear. I think I need to do more research on it!
by Peahead
Tue Oct 24, 2023 8:34 pm
Forum: Honeywell Home evohome
Topic: Boiler Cycling / HR92 hysteresis
Replies: 7
Views: 689

Re: Boiler Cycling / HR92 hysteresis

Hi,

Its a raspberry pi Zero running this :

https://temperature-machine.com/

with some ds18b20 temp sensors
by Peahead
Mon Oct 23, 2023 1:14 pm
Forum: Honeywell Home evohome
Topic: Boiler Cycling / HR92 hysteresis
Replies: 7
Views: 689

Boiler Cycling / HR92 hysteresis

Hi All, Firstly thanks Evohomeshop for providing this forum, seems like an excellent resource! My Setup - Open Vented System with a Worcester 24Ri Boiler. Y Plan Evohome HR92 x 5 (Lounge/Bed1/2/3/4) + DHW My Issue - Through the night, the boiler will continuously cycle on and off, I assume trying to ...