Thermostat E shuts down early if any furnace vents are closed

[joscva]

Installed a new Thermostat E last week, it's working with our furnace but I noticed it keeps giving the "Heads Up" warning during heating.  In troubleshooting this, I discovered that it seems to be related to the amount of air pressure in the system.  If I ensure every vent in the house is fully open, it runs the whole test without issue.  If I have any of them partially or fully closed, I start to run into problems.  The more closed some vents are, the earlier it fails (as quickly as 4 minutes).

I really don't want all the vents open fully as it makes my home office (that has computers in it and is always 10-15 degrees warmer than the rest of the house) as well as the small bathrooms much, much too hot to be in comfortably.  Is there anything I can do about this?

[tajennifer]

Hi joscva,
 
Thanks for posting. I'm sorry to hear about the situation you're experiencing with the vents and your system when these are partially or fully closed. I understand that you don't want to get the vents fully open in some parts of the house. In this case, I need to ask for some information to find a better solution:

• What is the error code you get on the thermostat screen?
• What type of system do you have? Electrical or gas?
• Who installed the thermostat? 

Please keep me posted. I'll be waiting for your response.
 
Best regards,
Jenny

[joscva]

No "error code" just the normal "Heads Up" message.  Our system is gas and was brand new in 2009.  I installed the thermostat, replacing our Ecobee.  It was extremely simple as all the needed wires are in place.

[tajennifer]

Hi joscva,
 
Thanks for your reply and for the information provided. I understand how frustrating it can be when things do not work as expected. But don't worry; we are here to help. In this case, the team would like to learn more about this behavior. When you get a chance, please fill out this form and let us know when you’re finished. We’ll have someone reach out to you via email from there.
 
Best regards,
Jenny