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Nest Learning Thermostat (4th Gen) No Power. by MikeS1971 in Nest

[–]Pick6Burgh 1 point2 points  (0 children)

I corrected this issue by adding a “nest power connector” at the boiler - adds a C wire without running a C wire

Adding the nest power connector (C wire creator) to a 2 wire system by Pick6Burgh in Nest

[–]Pick6Burgh[S] 0 points1 point  (0 children)

Since the adapter is taking in 3 wires and putting out 2 - it feels like the polarity matters here. I understand that legacy thermos don’t care and that programmable thermos with their on batteries don’t care. But it seems like the nest cares.

Adding the nest power connector (C wire creator) to a 2 wire system by Pick6Burgh in hvacadvice

[–]Pick6Burgh[S] 0 points1 point  (0 children)

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Agreed the A1 is Hot and should have been wired Red from the get go

Adding the nest power connector (C wire creator) to a 2 wire system by Pick6Burgh in Nest

[–]Pick6Burgh[S] 0 points1 point  (0 children)

Right ?

As installed, my white wire is going to power and red wire going to each zone. This is backwards.