OK - I might cross-post this into DIY Disasters, but I'll start here.
I wanted to fit a Hive 2 controller to my Vaillant EcoTec 28, to replace the Danfoss RETB+RF that's fitted there. I had accidentally bought the Heating + HW Hive, despite only needing the heating control on my combi boiler. I googled, and it seemed to be OK, so I went ahead.
Now, the Danfoss backplate is compatible with the Hive one, so you can leave that in place. Before I did, I had:
L & N on the left
Grey cable to 2 (Common)
Black cable to 3 (Heating on)
So, I moved the black cable to 4 (Heating on for the Hive), and put it back together.
Put the Hive controller on, turn it all on, and nothing. Check - fuse is blown. Ah.
Checking the website, I realise I should also have moved the grey cable from 2 (common) to 1 (HW off); the Hive Heat+HW doesn't have a Common terminal.
Do that - turn it back on. Nothing. Check. Fuse blown again. OK.
Alright - so I've rolled back, put the Danfoss back on, turned it all back on with a new fuse, and... nothing. Troubleshot the thermostat, and the thermostat is calling for heat, and the RF controller next to the boiler has a light under CH1 which goes on and off as I turn the thermostat up and down, so it appears that is also demanding heat.
However, the boiler isn't listening - it shows an S30 code (no demand from external controls) if I check. I currently have it on manual mode to keep the house warm.
The question is - have I just blown my lovely 1yo combi boiler's electronics? The controls, panel, etc. are all working, but it just doesn't seem to be demanding heat, and I haven't touched any other wiring than at the panel, which is back where it was.
Is there any other way to check that the electronics are working correctly?
Thanks!
Dan
I wanted to fit a Hive 2 controller to my Vaillant EcoTec 28, to replace the Danfoss RETB+RF that's fitted there. I had accidentally bought the Heating + HW Hive, despite only needing the heating control on my combi boiler. I googled, and it seemed to be OK, so I went ahead.
Now, the Danfoss backplate is compatible with the Hive one, so you can leave that in place. Before I did, I had:
L & N on the left
Grey cable to 2 (Common)
Black cable to 3 (Heating on)
So, I moved the black cable to 4 (Heating on for the Hive), and put it back together.
Put the Hive controller on, turn it all on, and nothing. Check - fuse is blown. Ah.
Checking the website, I realise I should also have moved the grey cable from 2 (common) to 1 (HW off); the Hive Heat+HW doesn't have a Common terminal.
Do that - turn it back on. Nothing. Check. Fuse blown again. OK.
Alright - so I've rolled back, put the Danfoss back on, turned it all back on with a new fuse, and... nothing. Troubleshot the thermostat, and the thermostat is calling for heat, and the RF controller next to the boiler has a light under CH1 which goes on and off as I turn the thermostat up and down, so it appears that is also demanding heat.
However, the boiler isn't listening - it shows an S30 code (no demand from external controls) if I check. I currently have it on manual mode to keep the house warm.
The question is - have I just blown my lovely 1yo combi boiler's electronics? The controls, panel, etc. are all working, but it just doesn't seem to be demanding heat, and I haven't touched any other wiring than at the panel, which is back where it was.
Is there any other way to check that the electronics are working correctly?
Thanks!
Dan