03-25-2025 08:46 AM
I have installed 4 nest power adapters on a 4 zone boiler. All thermostat wire is 2 wire. Added secondary transformer. Getting 24v between w and r before adapters but not after. Thermostat saying no power to Rh
03-25-2025 11:35 PM
Verify that you have wired it like this for each Power Connector.
You can use the same external transformer for every Power Connector.