Why Your Nest Thermostat Isn't Working and How to Solve the Problem

April 13, 2021

The Nest thermostat is one of the best-selling smart thermostats you can get. And for good reason. It learns your temperature preferences and makes an energy-efficient schedule to match. And through geofencing with your phone, the Nest Learning Thermostat and Nest E realize when you’re at your house or gone and can adjust temperatures to help you save even more.

The Nest works with a full range of 24-volt heating and cooling systems, but it’s always a wise idea to use the Nest thermostat compatibility checker before installing one. Don’t forget to talk with your energy company for valuable rebates, because you may be able to get a Nest for free or close to it.

Once you’ve confirmed it’s compatible, you can either install it without help or contact a HVAC specialist like Smyth Air Conditioning Inc. If you’re installing it without help, you’ll notice a terminal for the C-wire, or common wire. This wire is solely used for powering your thermostat. If your house or HVAC system is older, you might not have one of these wires. In the majority of cases, Nest says this isn’t a setback because the thermostat can pull ample power from other heating and cooling wires.

In some instances, your heating and cooling system might need that C-wire. And here’s why.

Why Your Nest Keeps Losing Power and Other Malfunctions

The Google Nest Thermostat is better than outdated programmable thermostats that have a combination of wiring and AA batteries for power. It uses a rechargeable lithium-ion battery and wiring to connect to Wi-Fi, power its digital display and run your heating and cooling system.

8 Common Nest Thermostat Problems

If it can’t draw adequate power, Nest says you may experience some of these troubles:

  1. Poor battery life.
  2. Thermostat motion sensing won’t operate.
  3. Your thermostat every now and then disconnects from Wi-Fi.
  4. Your system unexpectedly turns on or off, or won’t turn off.
  5. Your system is creating weird noises, including chattering, stuttering, clicking or thumping.
  6. Heating or cooling is short cycling, or repeatedly turning on and off in a short period of time.
  7. There is a delay notification on your Nest thermostat’s screen, such as “heating is delayed for 2:30 minutes.”
  8. The system fan is continuously running, won’t turn on or turns off and on rapidly in a short period of time.

You might believe something is wrong with your heating and cooling system, but if you just installed the Nest, we recommend you check your thermostat first. This is especially timely if the weather is temperate, and you haven’t been running your heat or air conditioning much.

Our Professionals Can Resolve Nest Thermostat Problems

If you’ve attempted Nest thermostat troubleshooting on your own but can’t solve the issue, a smart thermostat pro including one from Smyth Air Conditioning Inc can provide support. We can diagnose the problem and add a C-wire, if needed.

Smart thermostats including the Nest are designed to make your life simpler, with automatic energy-efficient programming and the opportunity to keep an eye on temperatures while you’re out. It’s an annoying experience when yours won’t run like it should, but our heating and cooling pros at Smyth Air Conditioning Inc can take care of the trouble in no time.

If you’re going through odd heating and cooling behavior with your new Nest, call us at 561-533-6066 to set up your appointment right away.