1. Nhanganyaya
The Google Nest Learning Thermostat (3rd Generation) is a programmable, smart thermostat designed to learn your preferences and help you save energy. It automatically adjusts your home's temperature based on your habits, weather conditions, and home occupancy. This manual provides detailed instructions for installation, operation, maintenance, and troubleshooting.

Mufananidzo 1.1: Mberi view of the Google Nest Learning Thermostat displaying the current temperature.
2. Safety Information
Please read and understand all safety instructions before installing or operating your Nest Thermostat. Failure to follow these instructions may result in electric shock, fire, or other hazards.
- Kuchengetedzwa Kwemagetsi: Always turn off power to your heating and cooling system at the circuit breaker before beginning any installation or wiring.
- Professional Installation: If you are unsure about any part of the installation process, consult a qualified HVAC professional.
- Indoor Use Chete: This device is designed for indoor use in residential or light commercial environments.
- Battery Handling: The thermostat uses AA batteries. Ensure correct polarity when inserting batteries. Do not mix old and new batteries or different types of batteries.
3. Package Zviri mukati
Ona kuti pasuru yako ine zvinhu zvinotevera:
- Chiratidziro cheNest Learning Thermostat
- Nest Base
- Zvikuro Zvekugadzika uye Zvibatiso Zvemadziro
- Trim Plate (optional, to cover marks from old thermostat)
- Quick Start Guide
4. Setup
4.1 Kuiswa
- Dzima Simba: Locate your circuit breaker and turn off the power to your heating and cooling system.
- Bvisa Old Thermostat: Carefully remove your old thermostat from the wall. Take a picture of the wiring before disconnecting any wires.
- Install Nest Base: Mount the Nest Base to the wall using the provided screws and anchors. Ensure the base is level.
- Wire the Nest Thermostat: Connect your system's wires to the corresponding terminals on the Nest Base. The Nest Thermostat is compatible with most 24V heating and cooling systems. A C-wire (common wire) is often recommended for consistent power, especially with systems that do not provide continuous power to the thermostat. If you do not have a C-wire, the Nest Thermostat may still work by 'power stealing' from other wires, but this can lead to intermittent issues.
- Batanidza Chiratidziro: Snap the Nest Thermostat display onto the Nest Base.
- Dzosera Simba: Dzorera simba zvakare pamutambo wedunhu.

Mufananidzo 4.1: Side profile of the Nest Thermostat, illustrating its wall-mounted design.
4.2 Kugadziriswa kweApp
- Download the Nest App: Download the Google Nest app from your device's app store.
- Gadzira Akaundi: Open the app and create a new account or sign in with an existing Google account.
- Wedzera Mudziyo: Follow the in-app instructions to add your Nest Thermostat. You will typically scan a QR code on the thermostat or enter a 6-digit entry key.
- Batanidza kuWi-Fi: The app will guide you through connecting your thermostat to your home Wi-Fi network. This enables remote control and smart features.
- Kutanga Setup: Complete the initial setup questions regarding your home type, heating/cooling system, and preferences.
Note for Refurbished Units: If you are setting up a refurbished unit and encounter issues connecting to the app, you may need to perform a factory reset and then use the website home.nest.com to add the device. After resetting the Wi-Fi connection on the thermostat, it may provide a 7-digit entry key (e.g., 123-ABCD) which can be entered on the website to link the thermostat to your account.
5. Kushandisa Thermostat
The Nest Learning Thermostat can be controlled directly on the device, through the Nest app, or with voice commands via Google Assistant or Alexa.
5.1 Basic Controls
- Turning the Ring: Rotate the outer ring of the thermostat to adjust the target temperature.
- Pressing the Display: Press the display to access the main menu, confirm selections, or view ruzivo rwakadzama.

Image 5.1: The Nest Thermostat display indicating heating mode and target temperature.
5.2 Learning Function
The Nest Thermostat learns your preferred temperatures over time. Adjust the temperature manually for a few days, and the thermostat will begin to build a schedule based on your habits. Look for the Nest Leaf icon on the display, which indicates an energy-saving temperature setting.
5.3 Kuronga
While the thermostat learns automatically, you can also create or modify a custom schedule through the Nest app or directly on the device. This allows for precise control over your home's temperature throughout the day and week.
5.4 Remote Control and Voice Commands
Use the Google Nest app on your smartphone or tablet to control your thermostat from anywhere. You can also integrate your Nest Thermostat with voice assistants like Google Assistant and Amazon Alexa for hands-free control. For example, say "Hey Google, set the thermostat to 72 degrees" or "Alexa, turn up the heat."
6. Kuchengeta
6.1 Kuchenesa
To clean your Nest Thermostat, gently wipe the display and outer ring with a soft, dry, lint-free cloth. Avoid using abrasive cleaners, solvents, or spray cleaners directly on the device.
6.2 Kutsiviwa kwebhatiri
The Nest Thermostat uses two AA batteries for backup power. When the battery level is low, you will receive a notification on the thermostat display and in the Nest app. To replace the batteries:
- Gently pull the display off the Nest Base.
- Bvisa mabhatiri ekare eAA.
- Isa mabhatiri maviri matsva eAlkaline AA, kuve nechokwadi chekuti polarity chaiyo.
- Snap the display back onto the Nest Base.
6.3 Zvigadziriso zveSoftware
Your Nest Thermostat automatically downloads and installs software updates when connected to Wi-Fi. Ensure your thermostat remains connected to the internet to receive the latest features and security enhancements.
7. Kugadzirisa matambudziko
- Hapana Simba/Display Off: Check your circuit breaker. Ensure the thermostat display is properly seated on the base. If your system lacks a C-wire, ensure the AA batteries are fresh.
- Matambudziko eKubatanidza Wi-Fi: Verify your home Wi-Fi network is operational. Restart your router and the Nest Thermostat. Ensure the thermostat is within range of your Wi-Fi signal.
- Heating/Cooling Not Working: Check the thermostat's mode (Heat, Cool, Off). Ensure the target temperature is set appropriately. Verify your HVAC system is receiving power.
- Thermostat Not Learning: Ensure you are making manual temperature adjustments consistently for a few days. Check that the 'Learning' feature is enabled in the settings.
- Kudzosera zvazvanga zviri kubva kufakitori: If persistent issues occur, you can perform a factory reset. Go to Settings > Reset > All Settings on the thermostat. Be aware that this will erase all your settings and learned schedules, requiring re-setup.
8. Zvinotsanangurwa
| Feature | Detail |
|---|---|
| Brand | |
| Model Number | CRT2NESTHERMO3GENRB |
| Product Dimensions | 3.3"D x 3.3"W x 1.21"H |
| Item Weight | 1.59 makirogiramu |
| Color | Simbi isina ngura |
| Material | Simbi isina ngura |
| Display Type | LCD |
| Control Type | Button Control (Dial) |
| Kudzora Nzira | App, Izwi (Google Mubatsiri, Alexa) |
| Kubatana Technology | Wi-Fi |
| Simba Source | Battery Powered (mabhatiri maviri AA anodiwa) |
| Voltage | 1.5 Volts |
| Mounting Type | Gomo reMasvingo |
| Special Feature | Programmable, Energy Star Certified |

Image 8.1: Dimensions of the Google Nest Learning Thermostat.
9. Warranty uye Tsigiro
9.1 Ruzivo rweWaranti
For specific warranty details, please refer to the warranty card included with your product or visit the official Google Nest support webNzvimbo yacho. Magwaro ewarandi anowanzo vhara zvikanganiso muzvinhu uye mashandiro kwenguva yakatarwa kubva pazuva rekutenga.
9.2 Mutengi Tsigiro
If you require further assistance, technical support, or have questions not covered in this manual, please visit the official Google Nest support page or contact their customer service directly. You can usually find contact information and extensive FAQs on the Google Nest websaiti: support.google.com/nest.





