Search found 4 matches

by Pghstochaj
Tue Jan 09, 2024 12:12 pm
Forum: OpenTherm Setup & Help
Topic: Evohome, Vaillant 637 s plan and opentherm
Replies: 3
Views: 430

Re: Evohome, Vaillant 637 s plan and opentherm

Thanks very much for the reply. Hopefully somebody that has done it will see this post. I guess the bit I don't understand is how the boiler knows to do high temperature for hot water demand versus modulated temperature/flow for heating demand. I can't find any wiring schematics for it (I guess I ...
by Pghstochaj
Mon Jan 08, 2024 4:54 pm
Forum: OpenTherm Setup & Help
Topic: Evohome, Vaillant 637 s plan and opentherm
Replies: 3
Views: 430

Evohome, Vaillant 637 s plan and opentherm

Hi everybody I note that this is a fairly quiet part of the forum so I am not holding out much hope, but it bugs me so I need to try! My set up is as follows: - Vaillant Ecotek 637 plus system boiler - Unvented hot water tank - S plan set up with one BDR91 doing the central heating circuit via an ...
by Pghstochaj
Sun Apr 28, 2019 7:38 pm
Forum: Honeywell Home evohome
Topic: App won’t connect to controller
Replies: 2
Views: 152

Re: App won’t connect to controller

Added another trv and now it’s back. Oh well! Thanks
by Pghstochaj
Sun Apr 28, 2019 7:30 pm
Forum: Honeywell Home evohome
Topic: App won’t connect to controller
Replies: 2
Views: 152

App won’t connect to controller

Hi all, I hope somebody can help me! I have two evohome controllers, both connected to WiFi directly. Both have been working but fine but since this morning, one of the controllers, when selected in the app, just comes up as “loading” continuously. The other one works fine. The controller seems to be ...