Originally Posted by
imellor
Welcome to the club, I have also just installed an Evohome colour.
I have a "standard" "y" plan, ie hot water and one central heating zone.
The issue I am having is that when the hot water relay demands heat, the heating relay also demands heat. The other way round ie heating demanding heat, everything works OK.
I phoned the helpdesk and they have advised that, as I have the BDR9 relays relays next to each, other I should move them apart. However, I don't believe they are interfering with each other because:
1 The heating relay does not trigger the hot water relay
2 Sometimes you can see the heating relay come on about half a second before the hot water relay, implying that the request is coming from the control and not any interference from the hot water relay.
Tonight I am going to put one of the BDR9 on an long piece of cable and rule out interference, but I would be interested to know if anyone else has had this problem?
Ian