I have a boiler with three wires, R W C respectively. I want to replace the nest recently, but it doesn't work after I connect the wires. If I only connect R and W, it will turn on, but it won't charge. Can anyone help me? Please
Yikes! I'm sorry to hear that your Nest Thermostat doesn't work after you connected your thermostat wires to it. Since it is a newly installed thermostat, follow these:
Inspect the thermostat display.
Remove the thermostat display from its base and check if any connector pins are bent.
Ensure that the wires are connected properly.
Check if the thermostat wires are secured in their terminals and all the buttons are down.
if you've made sure that the thermostat display and wires are in good condition and low battery message still shows, charge the thermostat via a micro-USB cable then use it to plug the thermostat’s display into a power outlet and leave it plugged in.
