Recent content by MattSmith

Success! All is working perfectly based on the method you described. Took me a while to realise the boiler has to be set to winter mode (little snowman) as it was set to summertime by default which ignored the thermostats altogether. Once I realised this everything started working. Thanks for...

Okay great. That would be here? Can't try it until next weekend now but I'll let you know the result. Thanks again

Thanks for all your help picasso. That brings me back to my earlier problem that terminal 1 has no wires connected to it, so connecting to it won't do anything? Do I need to connect terminal 1 to somewhere inside the boiler to make it work?

When I tested terminal 2 on the boiler it had 240v on it even with the thermostats off. This shouldn’t be should it?

That’s exactly what I have tried but the central heating wouldn’t come on

If the 3 port isn’t the problem then I’m confused. The idea was to remove the low voltage thermostats, replace with the nest and control the x2 2 ports valves with separate nest thermostats. If I could connect these up like an s/y plan would the 3 port controlled by the boiler still function...

Thanks for your help picasso. You've confirmed my suspicion. If I change to a s plan 3 port valve then it wouldn't prioritise the hot water over the central heating as the current 3 port does. Sounds like a choice between a smart valve or a smart thermostat. Very interesting. Think it might...

Hi guys. Thanks for the replies. Yes there is a hot water cylinder with a temperature probe connected to the boiler. The 3 port is a Honeywell VC6013 and the x2 2 ports are Honeywell V4043H1056 I tested the voltage from the wireless stat and got 24v so I think its all low voltage at the...

Hi Guys Sparky here but I'm really scratching my head on this one. Alpha boiler which currently has both a wired Alpha stat (connected to BUS on the boiler) and a second RF Alpha thermostat connected to a relay board. The boiler also has a Honeywell 3 port valve actuator also connected to the...