Google nest thermostat error e73

Danielth77 — Mon, 22 Jul 2024 18:06:16 GMT

Why my Google Nest thermostat is showing no power on the Rc wire when there’s power? It was working perfectly fine and then the E73 popped up, I removed the Google one and installed a cheap analogy thermostat, and works. I re-installed the nest and the error comes again.

Re: Google nest thermostat error e73

gmelanymelissa — Fri, 26 Jul 2024 20:03:13 GMT

Hi @Danielth77,

Thanks for posting here in the community. I’m sorry to hear your Nest Thermostat got an E73 error. Help's here!

To better understand the situation, I'd like to ask a few questions:

What Nest thermostat model do you have?
Would you mind sharing a photo of your wiring configuration?
Do you have a conventional or a heat pump system?
When did your system last receive a professional maintenance check?
When did you install the thermostat?

In the meantime, here are a few things you can try:

Before you start, please turn off the breaker for your HVAC system.
Check if the air filter is clean and replace it if necessary.
Check if the drip pan is not overflowing.
Check if the drain tube isn't clogged.

Keep me posted.

Regards,

Melany

topic Google nest thermostat error e73 in Nest Thermostats

Google nest thermostat error e73

Re: Google nest thermostat error e73