Hive & Main Eco Compact

[number49]

Hi All,

I have a newish main eco compact 30 and dual channel Hive (I know, I know... but it's worked fine for the past 8 years with my previous combi).

The boiler has been off for a few weeks for some plastering and other jobs. I've filled and vented everything, powered up the boiler, Hive is online etc. along with hub and room stat.

Whenever the heating is set on (boost, schedule etc) the Hive responds as expected but the boiler powers off. I can't honestly remember if we had the heat on before as it was installed over the summer.

I've checked the wiring and photos as below and looks ok to me, I thought the black and grey may be reversed as the boiler wiring diagram showed 230 out on a specific terminal but don't think that's the problem. I've tested the Hive with a meter and get 240v on the corresponding terminals when the hive switches ie when heat on or heat off commands are sent from the app.

Any ideas/suggestions? I have the boiler fitter coming back but he cant get to us until next week and I could really do with getting the heat on to dry out the plaster in the meantime

 

[CBW]

You only need heating on (4 on Hive) and switch live back to the boiler, should be number 1 (at the boiler) iirc.

 

[RandomGrinch]

Yes, grey is the return wire to the boiler, so should be connected to terminal 4 in the dual channel Hive.
You don't require the black wire at all.

Have you got heating set to continuous on the boiler?

If none of that works and you want heat, just bridge together the terminals with the black and grey wires at the boiler.

@CBW it's like déjà vu!

 

[CBW]

@CBW it's like déjà vu!

I know! Well, it’s it Halloween

 

[number49]

Thanks @CBW & @RandomGrinch

It’s appreciated!