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  1. Replies
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    Good questions all beyond my knowledge. Need a...

    Good questions all beyond my knowledge. Need a Lennox tech to answer.
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    Time to call for service. Sounds like there is...

    Time to call for service. Sounds like there is an airflow issue, possibly due to the furnace being oversized. Maybe registers or returns are blocked?
  3. Thread: Google Nest Hub

    by Stuff
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    165

    With the Nest app you can manage up to 20...

    With the Nest app you can manage up to 20 thermostats for one house: https://support.google.com/googlenest/answer/9293015?hl=en
    I believe that it shows six thermostats at a time before it starts to...
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    Yes you should hear a lower fan speed for stage...

    Yes you should hear a lower fan speed for stage 1. At the furnace itself most have a status LED that you can see through a plastic portal. The blink code tells you what stage it is running at.
    ...
  5. Thread: Google Nest Hub

    by Stuff
    Replies
    3
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    165

    Even with the Nest Hub you won't get that. The...

    Even with the Nest Hub you won't get that. The Nest app will show and control all thermostats but each one is independent. The only thing that is common is away/eco mode.
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    What is the reason to replace the zone...

    What is the reason to replace the zone controllers you have? Since you have separate air handlers it would be difficult to combine everything into one system.

    Simply replace the thermostats one...
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    Check the bottom of the thermostat. There might...

    Check the bottom of the thermostat. There might be a tab there to push in and release the bottom. Then you pull out on the bottom and the top snaps apart.
  8. If the Nest is not keeping power from the...

    If the Nest is not keeping power from the transformer feed on R and C then you have a bad Nest. Verify power with only R and C connected. Check voltage and current settings in the menu - Settings -...
  9. Those are old zone dampers in the third photo. ...

    Those are old zone dampers in the third photo. There is normally a zone control board nearby where the thermostat, damper, and furnace wires connect. Guessing that this is a Mastertrol which used...
  10. Those are old zone dampers in the third photo. ...

    Those are old zone dampers in the third photo. There is normally a zone control board nearby where the thermostat, damper, and furnace wires connect.
  11. The old thermostat's B/Cool is not the same as...

    The old thermostat's B/Cool is not the same as the new thermostat's B. It is something that is rarely used today as it is a "not" W. There are only a few electronic thermostats that support it and...
  12. First issue is you didn't loosen all the screws...

    First issue is you didn't loosen all the screws so when you pulled the thermostat off of the backplate you pulled the W connection along with the white wire.

    So white goes to W on the new...
  13. No, that is not compatible with Nest or any other...

    No, that is not compatible with Nest or any other standard thermostat. Contact Lennox as they may have an adapter to provide the connections for a standard RWCYG thermostat.
  14. I don't think your new thermostat has that...

    I don't think your new thermostat has that option. Give Honeywell support a call at 1 800 828-8367 to confirm.

    You can manually change to "emergency heat" to lock out the compressor but you'd...
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    You can replace the old EIM with a new one that...

    You can replace the old EIM with a new one that has wireless. New thermostat and indoor sensor. Then need Redlink module for Internet. https://forwardthinking.resideo.com/related_links/50-1311.pdf
  16. That's the boiler zone control. (notice that it...

    That's the boiler zone control. (notice that it only has white and red thermostat wires connected) There will be a separate panel that controls a/c that will have the other color wires attached. ...
  17. duplicate - deleted

    duplicate - deleted
  18. Replies
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    Sounds right. Note C from the thermostat would...

    Sounds right. Note C from the thermostat would connect to the transformer terminal that has the blue wire on it.
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    Yes, first turn off the circuit breaker before...

    Yes, first turn off the circuit breaker before moving any connections. No guarantee but that breaker should cut power to the transformer so you don't short out anything. Yes, your approach to...
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    To use the transformer you need to attach both...

    To use the transformer you need to attach both wires. One to the C terminal and one to the R/Rc along with the R from the HVAC system.

    G to C transition is safer as long as you hook it up right....
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    That trick only works properly for heat only...

    That trick only works properly for heat only applications as the Rc needs to connect to the air handler.

    I assume that you don't have a spare wire for C. Some repurpose the wire that is doing G...
  22. Nest used to work with IFTTT which you could do...

    Nest used to work with IFTTT which you could do alarms with. Now they say to use Google Assistant. I haven't followed this but might give what you need.
  23. 1. Lots of times the sound is low refrigerant in...

    1. Lots of times the sound is low refrigerant in the system. Verify the O/B is set to "seasonally." Also adding a C wire keeps Nest from triggering the valve when it shouldn't.
    2. This might be...
  24. Is see no reason that wouldn't work. Ecobee may...

    Is see no reason that wouldn't work. Ecobee may simply be playing it safe as many will wire it differently from your diagram.
  25. I don't know why they said you couldn't go to 2...

    I don't know why they said you couldn't go to 2 thermostats. Do you have 2 free wires to each ecobee? If so you should be able to parallel to the acc+ and acc- connections. If you only have one...
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