Fitted a hive system last week and while the hive is working it isn’t switching the system as expected.
The boiler is a Potterton Kingfisher (about 45 years old) previous controller was a Potterton EP2000 (heating and water switching at the same time). Y plan with 3 way valve.
We get hot water and heating but only if both are on, boiler doesn’t strike up if only HW is on.
We have L, N, HW ON, HW OFF and HEAT ON connected at the hive replicating how the old controller was connected. The room stat is disconnected and a link fitted at the wiring centre.
Diagram showing how the old controller was wired, and feeds into it from Fcu, boiler and wiring centre. I did not replicate the link from L to T5 as there is no T5 on the hive
I don’t fully trust the house wiring as the previous occupant had fitted a second room stat using twin&earth and in doing so left the neutral from the first thermostat loose in the wiring centre (live at times)
Plan for tomorrow is to rewire the wiring centre to a known diagram and see if it works as I can’t see anything wrong at the new hive switch. Tracing feeds is not easy as the boiler is about 40ft and one floor away from the wiring centre .
Am I missing something obvious?
ps I think the neutral from the cable top left is connected to the neutral at the hive baseplate (there definitely three wires connected to neutral but the diagram shows 2 - heating is on so don’t want to take the controller off again to check)
The boiler is a Potterton Kingfisher (about 45 years old) previous controller was a Potterton EP2000 (heating and water switching at the same time). Y plan with 3 way valve.
We get hot water and heating but only if both are on, boiler doesn’t strike up if only HW is on.
We have L, N, HW ON, HW OFF and HEAT ON connected at the hive replicating how the old controller was connected. The room stat is disconnected and a link fitted at the wiring centre.
Diagram showing how the old controller was wired, and feeds into it from Fcu, boiler and wiring centre. I did not replicate the link from L to T5 as there is no T5 on the hive
I don’t fully trust the house wiring as the previous occupant had fitted a second room stat using twin&earth and in doing so left the neutral from the first thermostat loose in the wiring centre (live at times)
Plan for tomorrow is to rewire the wiring centre to a known diagram and see if it works as I can’t see anything wrong at the new hive switch. Tracing feeds is not easy as the boiler is about 40ft and one floor away from the wiring centre .
Am I missing something obvious?
ps I think the neutral from the cable top left is connected to the neutral at the hive baseplate (there definitely three wires connected to neutral but the diagram shows 2 - heating is on so don’t want to take the controller off again to check)
