Introduction

Get Started with SONOFF TRV

    ·Installation Made Simple
    ·Key Features You’ll Love

Understanding Three Modes

FAQ

Introduction

SONOFF Thermostatic Radiator Valve (TRV) is designed to be installed on the radiator valve for your home heating control. You can adjust the radiator valve from the App control your home temperature, automate your heating system, save on energy costs, and maintain the perfect temperature in every room. Whether you’re just setting up your TRV or looking to maximize its potential, this guide covers everything you need to know, including FAQs to address common questions.

Get Started with SONOFF TRV

Installation Made Simple

Key Features You’ll Love

  • App & Voice Control: Adjust the temperature from anywhere using your smartphone or voice assistants like Alexa and Google Assistant.
  • Open Window Detection: Save energy with this smart feature that detects sudden temperature drops and temporarily shuts off the radiator.
  • Valve Proportion Control: Fine-tune the radiator’s heat output by adjusting the valve opening percentage (default: 100%, adjustable range: 0%–100%).
  • Group Control: Manage multiple TRVs in different rooms simultaneously for consistent heating throughout your home.
  • Smart Schedules: Set the temperature for automated routines, like warming your bathroom before your morning shower.
  • Combine with Other Smart Devices: Use TRV with door/window sensor or temperature & humidity sensor for enhanced energy efficiency. It supports selecting an external sensor from the same gateway to display the temperature for more accurate temperature control.

Understanding Three Modes

1?? Schedule Mode (Auto Mode)
  • Create daily or weekly schedules to automate heating times and temperatures for each room.

2?? Manual Mode

  • Take control and set a custom temperature, overriding scheduled settings. Ideal for unexpected situations or personal preferences.

3?? Off Mode (Frost Protection)

  • Keeps the radiator at a minimal temperature (default: 5°C, adjustable between 4°C–35°C) to prevent freezing while conserving energy.

Learn more about the three operation modes: https://testshoppingcart.sonoff.tech/product-review/product-insight/automate-your-home-heating-with-sonoff-thermostatic-radiator-valve/

FAQ

Q: Can the TRV be used without a Zigbee hub?
A: No, it requires a Zigbee hub to work, such as SONOFF ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost or integrated into Home Assistant via Zigbee2mqtt.
Q: How does Open Window Detection work?

A: When the TRV detects a sharp drop in temperature (e.g., a window is opened), it temporarily shuts off the radiator to save energy. Heating resumes once it detects the temperature rising.

Q: How do I adjust the valve opening percentage?
A: Open the eWeLink app, navigate to the TRV settings, and select your desired valve proportion. This lets you customize the heat output for specific rooms.
Q: Can I control multiple TRVs at once?
A: Yes, the group control feature allows you to adjust the temperature of all TRVs in your home with a single command.
Q: What is the Frost Protection feature for?
A: Frost Protection ensures that your radiator maintains a minimal temperature to prevent pipes from freezing, even when the heating is turned off. You can set the Frost Protection temperature in the App.
Q: What should l do if the thermostatic radiator valve doesn't turn on after inserting the batteries?

A: 1. Ensure the battery is a non-rechargeable 1.5V LR6 Alkaline AA Battery.

2. Ensure the battery is within the validity period.

3. Ensure batteries are in good condition, with no signs of leaks, corrosion, or swelling

4. Ensure the battery polarity is correct.

Q: How to judge whether the device is in auto mode or manual mode?

A: Auto mode: When ““is displayed on the device screen, it means the auto mode is on.

Manual mode: When “” disappears on the device screen, it means the manual mode is on.

Q: How to switch between automatic mode and manual mode?

A: Shortly press “Middle button” to switch between the two modes.

Q: What should l do if the device screen display is reversed?

A: Dismount the shell, and press “Configuration key” for 3 seconds to change the screen display direction.

Q: How to restore factory settings?

A: Press “Middle button” for a longer time and at the same time put batteries in, then the screen displays “FA” and blinks for 3 seconds. After that, the device is reset to factory settings and is automatically restartedNote: All previous settings will be removed after the device is reset to factory settings

Q: What do these Error codes mean and how to solve them?
A:
F0: It means that the temperature sensor is abnormal, please contact the after-sales personnel.
F1: lt means slow valve operation please check installation status and heating valve.
F2: lt means an excessively wide adjustment range please check whether temperature controller is fastened.
F3: lt means an excessively small adjustment range please check the heating valve.
F4: lt means the battery runs out please replace the battery.
F5: lt means no valve was detected please check whether the valve is installed