Is my wiring compatible for nest thermostat. Google Nest Community

O B Wire Nest. OB Wire for Thermostat Not Detected r/Nest Use wire nuts or terminal connectors to ensure a secure and proper connection G-Green, W-White, Y-Yellow, R-Red, C-Red/Black (Blue wire) and last O/B- Orange/Blue (Orange Wire)

To make sure the issue is resolved, test your heating and cooling again It has O/B on Heat Pump side of the terminal board.

Google Nest Wiring For Heat Pump

G-Green, W-White, Y-Yellow, R-Red, C-Red/Black (Blue wire) and last O/B- Orange/Blue (Orange Wire) And a single stage heat pump will have a single wire connected to a compressor relay stage one( Y1) Altogether you should have 5 wires connected To make sure the issue is resolved, test your heating and cooling again

Birds nests. stock image. Image of summer, line, nests 39891641. Sometimes it might be a single O/B wire instead of two separate wires We originally installed the wiring in the Nest as: White to W1, Yellow to Y1, Green to G, Red to Rh, Blue (tried in C as thought maybe this was a common, but did not work, so kept it unconnected as it had been on the Honeywell), and Brown to O/B

Wiring help, nest learning thermostat. W, O/B confusion. r/Nest. G-Green, W-White, Y-Yellow, R-Red, C-Red/Black (Blue wire) and last O/B- Orange/Blue (Orange Wire) The Nest Thermostat E and the Nest Thermostat's star terminal also have an O/B label because it can alternately be used as an O/B connector for heat pump systems