01-15-2022 07:05 AM
Hello. Trying to install my Nest thermostat (05/2021 model)
Wiring issues: current HVAC system is a ducted minisplit whole house system: Carrier 38MAQB18R-3 unit with thermostat (basically a wired remote?): Midea brand, model: KSACN0401 with 4 thin unlabeled wires (red, black, yellow, brown). How can I connect my nest thermostat using the existing 4 wires?
06-12-2022 08:27 AM
Hi did you ever figure this out? Im having the exact same issue. Thanks!
06-12-2022 08:35 AM
No. Nest is not compatible and their customer service is horrible and not useful. I was able to make it work with an Ecobee lite3 (the AC unit needed some sort of device installed by an AC company before it worked)
06-12-2022 08:41 AM
Got it thanks for the reply. Ive spent hours trying to figure this out lol.
06-12-2022 08:42 AM
Btw how much did the AC company charge you to install the extra device to be able to make it work with a smart thermostat? Did it take them a long time to install also? Thanks again
06-12-2022 08:54 AM - edited 06-12-2022 08:54 AM
It was about $600, including the Ecobee thermostat, extra parts and labor. Expensive, but worth the money in savings on electric bills and able to control remotely.
10-25-2022 12:17 PM
Thanks for reporting back on this. Time to return my Nest. Its a shame they don’t make an adapter, esecpaully now that these minisplit systems are becoming a standard in new installations in the US, and have been the standard in the rest of the world for years.
11-02-2022 09:09 AM
Hi Margarine_D,
I'm sorry if you have to go through this. We'd like you to have a better experience, and I'd love to help.
A few questions: could you please tell us more about what's happening? Also, are you having issues installing your Nest thermostat?
Please let me know, as I would be happy to take a closer look and assist you further.
Best regards,
Mark
11-02-2022 09:25 AM
Thanks. I have a ducted mini split HVAC system, with thermostat KSACN0501AAA, which is a pretty common unit.
11-03-2022 02:17 PM
Hi there,
Thanks for letting me know.
We're sad to see you go, @Margarine_D. We hope we can make it up to you in the future by using a Nest thermostat. Please feel free to let us know if you have more questions in mind.
Thanks,
Mark
11-03-2022 04:45 PM
Thanks! I would love to use a Nest, but they are not compatible with mini split / ductless / ducted and heat pump systems, as described above.
This makes it challenging since all the new construction around me uses these kind of systems.
11-03-2022 05:29 PM
Hi Margarine_D,
Thanks for the help Mark!
@Margarine_D, I'm sorry to hear that your system isn't compatible with the Nest Thermostat. Let us know if you have other questions and we'd be glad to assist you.
Thanks,
Edward
11-06-2022 04:54 PM
Hey folks,
Checking back in should you still have some questions here. Let us know by replying to this thread.
Best,
Mel
11-07-2022 04:57 PM
Hi everyone,
Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know.
Thanks,
Mel