Thermostat - Nest

[Heyhoseh]

Question my thermostat is showing a Spanner and screwdriver, what does that mean? I check my app and saying error E73: No power to Rc wire

what do I have to do?

[David_K]

@Heyhoseh Try these steps:

Troubleshoot thermostat power issues during hot weather (E3, E4, E23, E24, E73, E74, or E195 help co...