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

April 13, 2021

The Nest thermostat is one of the most popular smart thermostats you can buy. And for good reason. It picks up on your temperature preferences and creates an energy-efficient schedule to match. And through geofencing with your phone, the Nest Learning Thermostat and Nest E are aware of when you’re at your home or away and can change temps 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 getting one. Don’t forget to talk with your energy supplier for valuable rebates, as you may be able to get a Nest for free or close to it.

Once you’ve confirmed it’s compatible, you can either wire it without help or call a HVAC specialist like Herman Allen Plumbing, Heating & Cooling. If you’re wiring it on your own, 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. Most of the time, Nest says this isn’t a setback as the thermostat can pull adequate power from other heating and cooling wires.

Sometimes, your heating and cooling system could have to have that C-wire. And here’s why.

Why Your Nest Keeps Losing Power and Other Malfunctions

The Google Nest Thermostat is a step up from aging programmable thermostats that rely on a combination of wiring and AA batteries for power. It relies on a rechargeable lithium-ion battery and wiring to sync with Wi-Fi, power its digital display and operate your heating and cooling system.

8 Common Nest Thermostat Issues

If it can’t draw enough electricity, Nest says you could encounter some of these problems:

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

You could believe something is wrong with your heating and cooling system, but if you just started using the Nest, we recommend you check your thermostat first. This is especially true if the weather is temperate, and you haven’t been using your heat or air conditioning frequently.

Our Specialists Can Resolve Nest Thermostat Troubles

If you’ve tried Nest thermostat troubleshooting by yourself but can’t solve the problem, a smart thermostat pro such as one from Herman Allen Plumbing, Heating & Cooling can support you. We can diagnose the malfunction and add a C-wire, if needed.

Smart thermostats like the Nest are made to make your life easier, by automatic energy-efficient programming and the ability to check temps while you’re out. It’s a time-consuming experience when yours won’t operate correctly, but our heating and cooling pros at Herman Allen Plumbing, Heating & Cooling can take care of the problem fast.

If you’re running into strange heating and cooling behavior with your new Nest, reach out to us at 804-302-6657 to set up your appointment right away.