Tuya Zigbee Smart Thermostat T5Z User Manual

1. Product Overview

The Tuya Zigbee Smart Thermostat T5Z is a battery-powered heating controller designed for water and gas boiler systems. It features a 1.8-inch TN LCD screen with 5 user-friendly mechanical buttons for easy interaction. This thermostat utilizes high-precision temperature sensors and quality relays to ensure accurate temperature measurement and control, providing a comfortable and warm environment. Its battery-powered design offers flexibility in installation where AC power might not be readily available.

The device supports smart control via the Tuya Smart/Smart Life App and is compatible with voice assistants such as Amazon Alexa, Google Home, and Yandex Alice.

For a comprehensive guide, please refer to the official user manual PDF: Tuya Zigbee Thermostat User Manual (PDF)

2. Setup

2.1 Package Contents

• 1 x RF Thermostat
• 1 x Manual
• 1 x Screw pack

2.2 Battery Installation

The thermostat is powered by 2 x 1.5V alkaline AA batteries.

1. Open the battery compartment covers on both sides of the screen by gently prying them open with your fingers.
2. Insert 2 AA batteries into the battery compartment, ensuring correct polarity.
3. Close the battery compartment covers.

Note: It is recommended to use 2 brand new 1.5V alkaline AA batteries. Please ensure the batteries are inserted with the correct orientation.

2.3 Physical Installation

The thermostat can be wall-mounted or used as a desktop unit.

1. Insert two screws partially into the wall-cassette.
2. Pass the screws through the two holes on the bottom plate of the thermostat.
3. Adjust the position of the thermostat and tighten the screws.

Wiring Method Options:

• Exposed wiring: Remove the crimping plate and baffle from the base, connect the wires, and then install the crimping plate with a screwdriver.
• Concealed installation and routing: Wire directly to the connecting terminal.

2.4 Wiring Diagram

The thermostat can be used for boiler control with a Dry-Contact signal or for AC-Power supply switch with a 5A max load current.

2.5 Software Installation (Zigbee version only)

1. Download Smart Life App: Scan the QR code below or search for "Smart Life" on the App Store (iOS) or Google Play (Android) to download the application.
2. Registration or Log in: Enter the Register/Login interface. Tap "Register" to create an account by entering your phone number to get a verification code and set a password. Choose "Log in" if you already have a Smart Life account.
3. Add Gateway: Power on your Zigbee gateway. After approximately 10 seconds, the red light on the device will indicate that the gateway has entered the network configuration state.
4. Add Device:
   1. Enter the "Home" interface of the Smart Life App.
   2. Click the "+" icon in the upper right corner and select "Add Device".
   3. The system will automatically search for and find the device. Click "Add".
   4. Alternatively, enter the gateway interface, select "Zigbee device list", and click "Add Device".
   5. Wait for several seconds until the system automatically searches for and finds the device, then click "Next".
   6. Select your 2.4G Wi-Fi network and enter the password, then click "Next".
   7. Wait for a while until the device is added successfully, then click "Done" to finish the installation.

Attention: The gateway must be added before adding the thermostat device. The device must be added within the gateway's page. Network configuration can only be done under manual mode. Please turn on Bluetooth and Wi-Fi on your phone in advance and ensure the Smart Life App has access to Bluetooth.

3. Operating Instructions

3.1 Power On/Off

Press the "Power key" (circle icon) briefly to turn the thermostat on or off.

3.2 Time Setting

Press and hold the "Time key" (clock icon) for 3 seconds to enter time setting mode. Use the "+" or "-" keys to adjust the week day and clock. Confirm by pressing the "Time key" briefly.

3.3 Temperature Setting

Press the "+" or "-" keys to increase or decrease the setpoint temperature by 0.5°C.

3.4 Child-Lock

Press and hold both the "+" and "-" keys simultaneously for 3 seconds to activate the child-lock. The thermostat will be locked, preventing accidental changes. To deactivate, press and hold both keys again for 3 seconds.

3.5 Temperature Control Modes

Press the "M" (Mode key) briefly to switch between manual mode and auto mode.

• Manual Mode: The temperature is controlled according to the current temperature set via "+" or "-". It remains active until the next manual change.
• Auto Mode: The temperature is controlled according to the set heating profile. Manual changes are activated until the next point at which the profile changes (indicated by a specific symbol on the screen). Afterwards, the defined heating profile will be activated again.

3.6 Weekly Programming Setting

The thermostat allows for up to 6 heating events with individual temperature settings for weekdays and weekends.

1. Press and hold the "M" key for 3 seconds to enter weekly programming setting.
2. Press "M" to select the item to modify (week day, clock, or temperature).
3. Use "+" or "-" to adjust the selected item.
4. Confirm each setting by pressing the "Time key" briefly.

3.7 Voice Control (Zigbee version only)

The thermostat supports voice control through Amazon Alexa, Google Assistant, and Yandex Alice. Ensure your thermostat is connected to the Smart Life App and linked to your voice assistant account.

Example Commands:

• "Alexa, open the HEATER."
• "Ok Google, close the HEATER."
• "Alice, set the HEATER to 26 degrees."
• "Alexa, make the HEATER colder."
• "Ok Google, raise the HEATER by 1 degree."
• "Alice, what temperature is the HEATER set to?"

Note: "HEATER" is the default device name; you can customize it in the Smart Life App. The temperature unit of the thermostat and smart speaker must be identical.

3.8 Backlight Mode

The backlight brightness can be customized for different scenes during the day and night.

4. Maintenance

4.1 Frost Protection Function

When the antifreeze function is activated, it can prevent water pipes from freezing or bursting. This function automatically turns on for a short time if the system temperature reaches a low threshold.

4.2 Low Power Reminder

When the battery voltage drops below 2V, the battery power icon on the display will flicker. It is recommended to replace the batteries as soon as possible to ensure continuous operation.

5. Troubleshooting

5.1 Connectivity Issues

• Thermostat not connecting to Wi-Fi/App: Ensure your Zigbee gateway is properly set up and connected to your 2.4GHz Wi-Fi network. Verify that your phone's Bluetooth and Wi-Fi are enabled and that the Smart Life App has necessary permissions. Follow the "Add Device" steps carefully.
• Zigbee vs. Wi-Fi models: The T5Z model is a Zigbee thermostat and requires a Zigbee gateway to connect to the internet and the Smart Life App. If you have a T5W (Wi-Fi) model, it connects directly to Wi-Fi without a gateway. Ensure you have the correct model for your setup.

5.2 Power and Display

• Display is blank: Check if the batteries are correctly inserted and have sufficient charge. Replace with new 1.5V alkaline AA batteries if necessary.
• Thermostat not responding to commands: Check if the child-lock is activated. Deactivate it by pressing and holding "+" and "-" for 3 seconds.

5.3 Temperature Control

• Inaccurate temperature readings: Perform temperature calibration in the advanced settings if you suspect the readings are off.
• Heating not turning on/off as expected: Verify the current operating mode (Manual or Auto) and check the weekly programming schedule if in Auto mode. Ensure the wiring to the boiler is correct.

6. Specifications

6.1 Advanced Settings (For Professional Technicians)

During power-off, press the "M" key for 3 seconds to enter advanced setting mode. Repress "M" to switch to the next mode. Press the "Power key" to save and exit advanced setting mode.

7. User Tips

• Battery Life: The battery life can vary depending on usage and battery quality. Using high-quality alkaline batteries is recommended for optimal performance.
• Temperature Unit: The thermostat's temperature unit (Celsius or Fahrenheit) must match the setting in your connected smart speaker (Alexa, Google Home) for voice control to function correctly.
• Compatibility: This thermostat is designed for water and gas boiler systems. It can also control thermal actuators or electric heating products with a 5A max load current.
• Power Failure Memory: The thermostat features an Intelligent Power Failure Memory function, retaining your settings even after a power interruption.

8. Warranty and Support

For detailed warranty information, technical support, and service inquiries, please refer to the official user manual PDF provided by the manufacturer. This document contains comprehensive details regarding product guarantees and how to obtain assistance.

You can access the full user manual here: Tuya Zigbee Thermostat User Manual (PDF)