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Nest Thermostat with Lennox

Rogelioleon0221
Community Member

I have my nest learning thermostat connected to Lennox cbx32mv inside unit and Lennox xp21 outside unit.

 

The cold air is working working perfectly even 2 stage but the heat does not work for some reason.

 

Please Help!!!

Rogelio Leon
1 Recommended Answer

Rogelioleon0221
Community Member

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Rogelio Leon

View Recommended Answer in original post

14 REPLIES 14

Markjosephp
Community Specialist
Community Specialist

Hello Rogelioleon0221,

 

Thank you for taking the time to let us know about your inquiry, and I'm sorry that your heat won't come on. I'm here to help.

 

To isolate:

 

  • Is the Nest thermostat newly installed?
  • Does the thermostat screen indicate that it’s actively calling for heating?
  • When did the heating last work?
  • Did you select the correct fuel type?
  • Are you getting any wire reports or message codes when calling for heat?

 

Have a look at this guide to troubleshoot strange heating or cooling behavior.

 

Keep me posted.


Best regards,

Mark

  • Is the Nest thermostat newly installed? So I just installed the warranty replacement cause back plate was not working on original.
  • Does the thermostat screen indicate that it’s actively calling for heating? It turns red and also shows 2 stage
  • When did the heating last work? With old thermostat which is icomfort by Lennox.
  • Did you select the correct fuel type? Single fuel.
  • Are you getting any wire reports or message codes when calling for heat? No messages just shows like heat is working.

 

Rogelio Leon

Hi there,

 

Thanks for letting me know. Let's sort this out.

 

It appears that your thermostat somehow sends a signal to call for heat, but your system is not responding since cooling works. To make sure it's in the right configuration, do you mind if I ask you to send us a picture of your previous and current thermostat wiring setup?

 

I'll look forward to your response.

 

Best regards,

Mark

Hey Rogelioleon0221,

 

I wanted to see if you still needed help. Please let us know if you have any other questions or concerns.

 

Best regards,

Mark

Screenshot_20221105-193346.png

Yes I still need assistance and here is the current wiring. I don't have picture of previous wiring but I know it was 4 wires since the thermostat was icomfort which is communicating.

Rogelio Leon

Hi Rogelioleon0221,

 

Thanks for sharing the diagram from your Nest thermostat. That would help.

 

Please take a look at this guide to troubleshooting a heat pump and let me know if it helps.

 

Best regards,

Mark

Hey there,

 

I'm checking back in. Were you able to do the steps from the link? I'd be glad to hear from you — I'd like to make sure everything is working.

Best regards,

Mark

Rogelioleon0221
Community Member

Yes I have completed these steps and the A/C works perfectly fine even as stage 2 but just the heat is not working at all.

Is there a way for someone from Google to reach out to Lennox support please as they will not speak with home owners.

I know there are other users in this community who have been able to get this setup to work but there are no photos in the chats or they have been removed.

 

Lennox will speak to a representative from Google to go over what needs to be done in order for this to work.

 

Can someone please reach out to Lennox.

 

You will make many customers happy if this can be done.

Rogelio Leon

Hello there,

 

I'm sorry for the delayed response, @Rogelioleon0221. I appreciate you attempting the steps. Let's find out more about what happened.

 

Please fill out this form, and we'd be happy to take a look into this for you. Let me know once you're done.

 

Best regards,

Mark

Hey there,

Checking back in — have you had the chance to fill out the form?

Best,
Mel

Rogelioleon0221
Community Member

This issue has been resolved and without the help of anyone over at google or your local pro's OnTech.

Neither google support reps or Ontech (Dish Network Technician) which I paid for had any clue what to do or wanted to even take the next step.

All anyone from your company had to do was call Lennox and have a 5 minute conversation and they would have provided the resolution right over the phone. They will only speak to the authorized Lennox technicians which OnTech is not authorized or certified!!!!

I hired a Lennox technician in my area and he was able to call in an speak to their support team who helped out with the step by step instructions.

I will share the pictures and steps on next post but I just want Google to realize they completely failed their customers on this type of issue and just dropped the ball entirely.

Thanks for no help Google but I hope what I share helps others so please don't close this thread as this is a resolution to a big issue.

Rogelio Leon

Hi Rogelioleon0221,

I'm sorry for the inconvenience this has caused you. We hope we can make it up to you in the future. If you need help with your Nest devices, you know where to find us.

Best regards,

Mel

Rogelioleon0221
Community Member

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Rogelio Leon

Hi Rogelioleon0221,

Thanks for these photos ― this helps the community a lot. It looks like we can consider this one complete, so I will lock the thread shortly unless I can help out with anything else.

Best,
Mel