topic Thermostat installation troubleshooting in Nest Thermostats

Thermostat installation troubleshooting

nadiaaak — Thu, 22 Dec 2022 22:56:23 GMT

I am trying to install a new nest thermostat. It keeps either giving me the error code E5 - when I check the trouble shooting site E5 doesn't exist as an error code. https://widgets.nest.com/nest-thermostat-troubleshooter/?hl=en#e5

Or it tells me to remove the nest and reconnect to base.

I have tried making the wires tighter and making sure everything inside isn't pushing the nest away from the base, it's still not working.

Re: Thermostat installation troubleshooting

Houptee — Thu, 22 Dec 2022 23:19:03 GMT

What kind of system do you have can you describe is it Heat and AC or heat pump etc.

Can you post a pic of the wires you have on the base, and pic of the old tstat wiring.

Re: Thermostat installation troubleshooting

nadiaaak — Thu, 22 Dec 2022 23:35:53 GMT

We have a heat system (no AC). Thank you!!

Re: Thermostat installation troubleshooting

Houptee — Thu, 22 Dec 2022 23:45:12 GMT

The E5 error will appear if the Nest detects that there is not wires connected to the W1 or Y1 terminals. There must be a least one wire connected to the W1 or Y1 terminal. Check the push connector for the W1 and Y1 terminal to make sure they are seated properly.

Re: Thermostat installation troubleshooting

Houptee — Thu, 22 Dec 2022 23:48:28 GMT

Also you must have Heat and AC since you have

Y (AC signal) and W (heat signal) and G (fan signal).

The red wire is + Power and the blue wire is - C common

Re: Thermostat installation troubleshooting

Jhonleanmel — Mon, 26 Dec 2022 20:33:10 GMT

Hey folks,

We appreciate your help here, Houptee.
nadiaaak, I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.

Thanks,
Mel

Re: Thermostat installation troubleshooting

Jhonleanmel — Thu, 29 Dec 2022 20:34:48 GMT

Hey there,

Checking back in should you still have some questions here. Let us know by replying to this thread.

Best,
Mel

Re: Thermostat installation troubleshooting

nadiaaak — Thu, 29 Dec 2022 22:41:34 GMT

Yea it’s still not working. I didn’t understand the answer provided to me/ it wasn’t an answer.

Re: Thermostat installation troubleshooting

Houptee — Fri, 30 Dec 2022 02:48:03 GMT

You said you have a heat only system no air conditioning.

This makes no sense because you have:

Yellow wire for Y1 is for the air conditioning

White wire W1 is for heat

Green wire G is for the fan

Red is + 24v power

Blue is -24v power (C common)

Everything looks like you wired it correctly.

Did you tell the Nest during setup it is a Forced Air Heat with Air conditioning system?

What exactly is happening do you get any fan coming on or any error messages from the Nest?

Re: Thermostat installation troubleshooting

EdwardT — Tue, 03 Jan 2023 03:05:45 GMT

Hi folks,

@Houptee, thanks for the help!

@nadiaaak, how's it going with your Nest Thermostat? Still need our help?

Thanks,

Edward

Re: Thermostat installation troubleshooting

EdwardT — Fri, 06 Jan 2023 03:08:42 GMT

Hi nadiaaak,

It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do.

Thanks,

Edward

Re: Thermostat installation troubleshooting

EdwardT — Tue, 10 Jan 2023 22:21:20 GMT

Hi nadiaaak,

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