Search results

Wow, you have certainly fully evaluated my system. What would be the benefit from attempting to remove 2 valve PSU from the system entirely? FYI - The sytem has been working 1.5 days and I've had no issues with it. I'm not sure what "issues" I would have or should be looking out for the...

Hi @RandomGrinch , Mission complete. Two nests installed, upstairs using the existing wiring to the old thermostat and downstairs is on a stand. Thanks for all your help with this, I am really pleased with the outcome. Below is a photo of the wiring system PCB as promised. tantrum...

Thanks for your help it's been really helpful and apprecitated. I will report back when I have (hopefully) installed one nest and I'll provide you with a photo of the PCB.

Hi, I performed the test as detailed: 1. Wired both systems 0v to RH - heating fired up 2. Removed upstairs connection - heating stopped upstairs, continue to run downstairs and boiler still on. 3. Removed downstairs connection too - heating stopped and boiler stopped heating up the water. I...

Thanks for the further information. I did a test on the wiring system by connecting RH to the +V and the boiler didn't wire up. I swapped the wire to 0V as below and the heating came on and the boiler was running. This confirms that your proposed method above is the way to wire a Nest 3rd...

Hi @RandomGrinch , Thanks for your reply. Apologies for the further questions as I try to understand the detail. To clarify, a test would be: Remove the wiring from a thermostat at the wiring system and place a wire between the '5V and RH' on the board, as per the sketch below? ] The outcome...

Hi, I am planning on replacing the two thermostats in my new build house that control the dual zone central heating. The thermostats are ESI ESRTP6C are connected to a wiring system that is connected to the combi boiler and two valves. The thermostats have the following wires connected: +5V...