topic Re: Is it possible to to replace Trane XL624 thermostat with Nest in Nest Thermostats https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/377113#M81193 <P>Hello there,</P> <P>&nbsp;</P> <P>I wanted to stop by and see how I could help.</P> <P>&nbsp;</P> <P>Thanks for assisting, <a href="https://www.googlenestcommunity.com/t5/user/viewprofilepage/user-id/54">@Patrick_Caezza</a>.</P> <P>&nbsp;</P> <P><a href="https://www.googlenestcommunity.com/t5/user/viewprofilepage/user-id/314655">@TexasNester</a>, I appreciate your thermostat's wiring diagram. It appears that your thermostat controls the NC terminal for some purpose. NC means normally closed contact, and when the relay coil is de-energized, the NC contact becomes open. I'd suggest contacting an HVAC technician to configure the terminal, as the Nest Thermostats don't have this function.</P> <P>&nbsp;</P> <P>Feel free to let us know if you have more questions.</P> <P>&nbsp;</P> <P>Regards,</P> <P>Mark</P> Sat, 11 Mar 2023 22:28:06 GMT Markjosephp 2023-03-11T22:28:06Z Is it possible to to replace Trane XL624 thermostat with Nest https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/368058#M79030 <P>It has the following wires: C,&nbsp;R,&nbsp;W1,&nbsp;W2, G,&nbsp;Y1,&nbsp;Aux NC</P><P>The Aux NC wire seems to be the wire that the nest compatibility checker has trouble but I am not sure what that wire does. <A href="https://store.google.com/us/widget/compatibility/thermostat" target="_blank">https://store.google.com/us/widget/compatibility/thermostat</A></P><P>Any help would be appreciated.</P><P>&nbsp;</P><P>Thanks</P><P>&nbsp;</P> Sat, 25 Feb 2023 17:51:17 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/368058#M79030 TexasNester 2023-02-25T17:51:17Z Re: Is it possible to to replace Trane XL624 thermostat with Nest https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/368477#M79072 <P>It should be. Post a picture of the original thermostat's wiring here.</P> Sun, 26 Feb 2023 04:26:48 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/368477#M79072 Patrick_Caezza 2023-02-26T04:26:48Z Re: Is it possible to to replace Trane XL624 thermostat with Nest https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/369787#M79404 <P>I think the aux nc wire controls the variable speed fan</P> Tue, 28 Feb 2023 09:01:51 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/369787#M79404 TexasNester 2023-02-28T09:01:51Z Re: Is it possible to to replace Trane XL624 thermostat with Nest https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/371050#M79699 <P><A href="https://www.amazon.com/photos/shared/tdYOmaufSzeuRDeEdwEHpg.qqVFdw0Bjai0P_rjhjqgfw" target="_blank" rel="noopener nofollow noreferrer">https://www.amazon.com/photos/shared/tdYOmaufSzeuRDeEdwEHpg.qqVFdw0Bjai0P_rjhjqgfw</A></P> Thu, 02 Mar 2023 00:47:56 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/371050#M79699 TexasNester 2023-03-02T00:47:56Z Re: Is it possible to to replace Trane XL624 thermostat with Nest https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/377113#M81193 <P>Hello there,</P> <P>&nbsp;</P> <P>I wanted to stop by and see how I could help.</P> <P>&nbsp;</P> <P>Thanks for assisting, <a href="https://www.googlenestcommunity.com/t5/user/viewprofilepage/user-id/54">@Patrick_Caezza</a>.</P> <P>&nbsp;</P> <P><a href="https://www.googlenestcommunity.com/t5/user/viewprofilepage/user-id/314655">@TexasNester</a>, I appreciate your thermostat's wiring diagram. It appears that your thermostat controls the NC terminal for some purpose. NC means normally closed contact, and when the relay coil is de-energized, the NC contact becomes open. I'd suggest contacting an HVAC technician to configure the terminal, as the Nest Thermostats don't have this function.</P> <P>&nbsp;</P> <P>Feel free to let us know if you have more questions.</P> <P>&nbsp;</P> <P>Regards,</P> <P>Mark</P> Sat, 11 Mar 2023 22:28:06 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/377113#M81193 Markjosephp 2023-03-11T22:28:06Z Re: Is it possible to to replace Trane XL624 thermostat with Nest https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/379467#M81713 <P>Hi TexasNester,</P> <P>&nbsp;</P> <P>I wanted to see if you still needed help. Please let us know if you have any other questions or concerns.<BR /><BR />Thanks,</P> <P>Mark</P> Wed, 15 Mar 2023 17:41:38 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/379467#M81713 Markjosephp 2023-03-15T17:41:38Z Re: Is it possible to to replace Trane XL624 thermostat with Nest https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/380284#M81939 <P>Hello TexasNester,</P> <P>&nbsp;</P> <P>It has been a few days since your last reply, and I'm going to lock the thread within 24 hours. If you have any questions, please feel free to create a new post.<BR /><BR />Best regards,</P> <P>Mark</P> Thu, 16 Mar 2023 22:16:31 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Is-it-possible-to-to-replace-Trane-XL624-thermostat-with-Nest/m-p/380284#M81939 Markjosephp 2023-03-16T22:16:31Z