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2 zone issue

jmdedo1964
Community Member

‎11-19-2023 04:24 AM

Hello,

I have a two zone system and can’t get heat from both…. I can get downstairs working with no thermostat connected upstairs and I can get upstairs working if no thermostat is connected downstairs…

my problem is when I get one thermostat working properly, I can’t get the second thermostat to work…

any advise ??

 

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zoeuvre
Community Specialist
Community Specialist

‎11-23-2023 08:07 AM

Hi jmdedo1964, 

 

Oh no! I'm sorry to hear that you are not getting heat from your two zone system. Let's see what's going on. A few questions: 

 

  1. What type of Nest Thermostat do you have?
  2. Is the Nest thermostat newly installed?
  3. Does the thermostat screen indicate that it’s actively calling for heating?
  4. What type of furnace do you have? (gas, electric, etc.)
  5. When did heating last work?
  6. Did heating ever work with the Nest Thermostat?
    If not: Did the heating work with the previous thermostat?
  7. Did you turn off the power to the HVAC system?
    • Did you recently turn off any breakers?
    • Have you recently experienced a brownout or blackout?
    • Is there a light switch near the heater that controls an outlet?
  8. Did you select the correct fuel type?
  9. Do the LED lights blink on the HVAC control board?
  10. When was the last time you changed the furnace's air filter?
  11. Have you experienced extremely cold weather lately?
  12. Is this the first notable temperature drop of the year in the area?

 

I'll look forward to your response. 

 

Best,

Zoe 

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