Google Nest Thermostat not heating

[graeme55au]

I have installed the thermostat, and all seems to be working fine except that it is not heating.  The cooling cycle works fine.  I have tested the system by installing the old thermostat and it all works perfectly with the old thermostat.  I have reinstalled the new thermostat but it makes no difference.  I have attached photos of the connections in the old thermostat and the new thermostat.

[Patrick_Caezza · Accepted solution]

Why did you insert the black wire into the W terminal on the Nest when it was connected to the B terminal on the original thermostat?

Move the black wire from the W terminal to the */OB terminal, then reset the thermostat to factory defaults and set it up again.

Select these wires when prompted by the App

Y/Y1, G/G1, R, C, and B

[graeme55au]

Thankyou Patrick,

I have just done exactly what you said and reset to factory settings and all working beautifully now.  Much appreciated.  I will order another one now for the other end of the house.

Regards 
Graeme

[MelbaDT]

Hey folks, 

I appreciate your help here, Patrick_Caezza. 

graeme55au, glad to hear that you're able to make it work by following Patrick's suggestion. Feel free to let us know if you have any further questions in mind about this. 

Best, 

Melba

[Jake]

Hey there,

I wanted to check in and see if you managed to see Melba's post. Please let me know if you have any questions from here. I would be happy to assist, and make sure you are good to go.

Best regards,
Jake

[EdwardT]

Hi folks,

I'm just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

Thanks,

Edward