Nest 3rd generation heat link H72

[Lou66]

Our thermostat is not working. We have hot water but the heating is not coming on the error code is H72. There is power going into the heat link however heating still not working.  Cold night ahead.  We tried all trouble shooting but nothing works.

[CristianC]

Hey there,

Thanks for reaching out. I'll do my best to get this resolved for you. What color is the light on your Heat Link?

[AlexD]

Hi, I wanted to check in. Do you need any further assistance?

If so, make sure to let me know. 

[CristianC]

It's been a while since this thread was last updated so I'll go ahead and lock this thread. If you're still experiencing problems, please feel free to start a new thread and we'll be happy to help.