Hive Installation Problems

[G.Wells]

Hello back in December I fitted a hive with my ICOS HE12 boiler. It seemed to be working well until the weather improved and I turned the heating off. At this point when the hot water fired up the radiators got warm yet the hot water didn't. I tried swapping the CH off and HW off wires which half worked as I now have hot water but the radiators are still getting hot. I still think it's a wiring issue. Can anyone help?

 

[G.Wells]

 

[flameport]

What is the rest of the system - one valve, 2 valves, some other combination? Was there an old room thermostat and if so, what was done with it?

Very unusual to have all 4 terminals in use. Possible it has been wired incorrectly.

 

[G.Wells]

Yeah there was a room thermostat I bypassed that by connecting the terminals together. One valve as far as I can see in the airing cupboard

 

[flameport]

One valve with 3 ports (3 pipes connected) suggests Y plan, and that doesn't use the 'CH OFF' terminal 2, so most likely the wiring at the Hive is wrong.

 

[G.Wells]

Any ideas how it should look or should I try swapping wires

 

[winston1]

Any ideas how it should look or should I try swapping wires

NO. Trial and error could cause damage. Have you RTFM?

 

[EFLImpudence]

Any ideas how it should look

Well - normally it looks like it does but without a wire in no. 2.

or should I try swapping wires

Of course not.