Why Your Nest Thermostat Isn't Operating Right and How to Fix It

April 13, 2021

The Nest thermostat is one of the top-selling smart thermostats you can buy. 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 know when you’re at your residence or gone and can raise and lower temps to help you save even more.

The Nest can be used 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 check with your energy provider for valuable rebates, since you might be able to get a Nest for free or close to it.

Once you’ve confirmed it’s compatible, you can either wire it yourself or hire a HVAC pro like Farnell Mechanical, Inc.. If you’re installing it without help, you’ll spot a terminal for the C-wire, or common wire. This wire is only used for powering your thermostat. If your house or HVAC system is older, you might not have one of these wires. In most cases, Nest says this isn’t an issue since the thermostat can pull enough power from other heating and cooling wires.

In some cases, your heating and cooling system could require that C-wire. And here’s why.

Why Your Nest Keeps Losing Power and Other Issues

The Google Nest Thermostat is an improvement from older programmable thermostats that use a combination of wiring and AA batteries for power. It uses a rechargeable lithium-ion battery and wiring to link to Wi-Fi, power its digital display and turn on your heating and cooling system.

8 Common Nest Thermostat Malfunctions

If it can’t receive ample power, Nest says you may experience some of these issues:

  1. Bad battery life.
  2. Thermostat motion sensing is disabled.
  3. Your thermostat occasionally disconnects from Wi-Fi.
  4. Your system abruptly turns on or off, or won’t shut off.
  5. Your system is making weird noises, such as chattering, stuttering, clicking or thumping.
  6. Heating or cooling is short cycling, or constantly turning on and off in a short period of time.
  7. There is a delay notification on your Nest thermostat’s screen, along the lines of “heating is delayed for 2:30 minutes.”
  8. The system fan is continuously working, won’t turn on or turns off and on repeatedly in a short period of time.

You might worry something is wrong with your heating and cooling system, but if you just started using the Nest, we advise you check your thermostat initially. This is especially true if the weather is moderate, and you haven’t been using your heat or air conditioning frequently.

Our Pros Can Resolve Nest Thermostat Troubles

If you’ve attempted Nest thermostat troubleshooting on your own but can’t repair the issue, a smart thermostat specialist including one from Farnell Mechanical, Inc. can provide assistance. We can pinpoint the malfunction and install a C-wire, if needed.

Smart thermostats like the Nest are made to make your life more convenient, with automatic energy-efficient programming and the opportunity to monitor temps while you’re out. It’s a frustrating experience when yours won’t run properly, but our heating and cooling professionals at Farnell Mechanical, Inc. can fix the problem quickly.

If you’re running into weird heating and cooling behavior with your new Nest, give us a call at 334-245-4748 to set up your appointment today.