1. Introduction
The HESSWAY G7 series is a sophisticated smart ventilation system controller designed to monitor and manage indoor air quality. It integrates PM2.5, CO2, temperature, and humidity sensors, providing comprehensive environmental data. Featuring a 4.3-inch industrial-grade True Color display, an ultra-thin 15mm body, a durable tempered glass panel, and high-sensitivity touch buttons, the G7 offers an intuitive user experience.
Equipped with both WIFI and RS485 modules, the controller allows for remote access and control, seamlessly integrating with smart home and building intelligent control systems. It can control AC fans and valves via relay, with optional support for EC fans (0-10V/PWM output). The G7 is suitable for a wide range of applications, including residential, commercial, and industrial settings, effectively improving air quality to create healthy, comfortable, and energy-efficient living and working environments.
Image: HESSWAY G7 Controller Sensor banner, highlighting CO2, PM2.5, temperature, and humidity detection.
2. Specifications
The HESSWAY G7 controller offers robust performance and versatile features:
| Project | Unit | Parameter Value |
|---|---|---|
| Power supply | VAC | 95~240 |
| CO2 Adjustment range | PPM | 0~3000 |
| CO2 Display range | PPM | 0~5000 |
| PM2.5 Adjustment range | µg/m³ | 0-999 |
| PM2.5 Display range | µg/m³ | 0-999 |
| Sensor warm-up time | min | 2 |
| Response time | s | ≤10 |
| Temperature display range | °C | 0~99 |
| Humidity display range | %RH | 5~99 |
| Control power | W | ≤200 |
| Rated Power | W | <2 |
| Output Interface | 3-speed fan | AC output, EC 0-10V/EC PWM Optional |
| Dimensions | MM | 120×120×38mm |
| Wirings | MM² | 2 x 1.5 or 1 x 2.5 |
| Install hole spacing | MM/In | 60±5MM/2.36±0.2In |
| Protection Class | IP | 30 |
| Flame retardant rating | Level | V0 |
Image: Detailed technical specifications for the HESSWAY G7 controller.
Image: Diagram illustrating the dimensions of the HESSWAY G7 controller.
3. Package Contents
Upon opening your HESSWAY G7 package, you should find the following items:
- 1 x Ventilator Controller (Available in AC FAN version, EC FAN 0~10V version, or EC FAN PWM version)
- 2 x Screws
- 1 x User manual (English)
- 1 x Retail box
4. Product Overview & Interface
The HESSWAY G7 controller features a clear display and intuitive touch controls. The main screen provides real-time data on air quality, temperature, and humidity, along with current operating mode and fan speed.
Image: Detailed diagram of the HESSWAY G7 control panel, showing numbered buttons and their corresponding functions.
Control Panel Functions:
- WIFI icon: Indicates WIFI connection status.
- Operating mode: Displays current working mode (automatic, manual, timing).
- Remaining filter indicator: Shows filter time remaining ratio.
- Indoor temperature and humidity: Displays current indoor temperature and humidity.
- PM2.5 concentration: Shows PM2.5 detection value.
- Child lock: Long press for 5 seconds to enable or disable the function.
- Date and time status: Displays current date and time.
- Solenoid valve switch state: Turn on display icon, turn off display icon.
- Weather: Shows outdoor weather conditions.
- CO2 concentration: Displays indoor CO2 detection value.
- Outdoor temperature and humidity: Shows outdoor temperature and humidity.
- PM2.5 in your city: Displays outdoor PM2.5 detection value.
- Wind speed: Displays current fan speed (stop, low, medium, high, 4 states).
- ^ KEY: + Wind speed, automatic/manual mode switch.
- WIFI: Press and hold for 5 seconds to enter and activate WIFI.
- < KEY: Open or close the valve.
- CHILD LOCK: Long press to turn on or off the child lock function.
- ON/OFF: Turn on, turn off the controller or set back.
- > KEY: Open or close the valve.
- MENU/OK: Press to enter the menu or save.
- MODE: Switch working mode.
- v KEY: - Wind speed, automatic/manual mode switch.
5. Installation & Setup
Physical Installation:
The HESSWAY G7 controller is designed for easy wall mounting. Ensure you have a standard electrical box for installation.
- Turn off the main power supply before beginning installation.
- Carefully remove the front panel of the controller.
- Mount the backplate of the controller to the electrical box using the provided screws, ensuring it is level and secure.
- Connect the wiring according to the appropriate wiring diagram for your fan type (AC, EC 0-10V, or EC PWM).
- Reattach the front panel to the backplate, ensuring it clicks securely into place.
- Restore power to the unit.
Image: Diagram showing the physical installation steps of the HESSWAY G7 controller into a wall box.
WIFI Setup (TUYA APP):
The G7 controller supports remote control via the TUYA mobile application. Follow these steps to connect your device:
- Ensure your controller is powered on and displaying the main interface.
- Press and hold the WIFI button (labeled 15) on the controller for 5 seconds until the WIFI setting screen appears with a QR code.
- Download and install the 'Tuya Smart' app on your smartphone (available on iOS and Android app stores).
- Open the Tuya Smart app and register/log in.
- Tap the '+' icon in the top right corner to add a device.
- Select 'Add Manually' and navigate to the 'Sensors' or 'Air Quality Monitor' category.
- Follow the in-app instructions to connect. You may need to confirm that the indicator on the controller is blinking rapidly.
- Select your 2.4 GHz Wi-Fi network and enter the password. (Note: 5GHz networks are not supported. If your router is 5GHz, please set it to 2.4GHz common router setting method).
- The app will then scan for and add the device. Once successfully added, the controller will display a confirmation message, and you can control it via the app.
Video: Demonstration of the HESSWAY G7 controller's menu navigation, parameter settings, and connection process with the Tuya Smart mobile application.
6. Wiring Diagram
Proper wiring is crucial for the safe and correct operation of your HESSWAY G7 controller. Refer to the diagram below for the specific fan output type you are using.
Image: Comprehensive wiring diagrams for the HESSWAY G7 controller, detailing connections for AC fan, EC 0-10V fan, and EC PWM fan versions.
Wiring Instructions:
- AC Fan Version: Connect the Live (L) and Neutral (N) wires from your 95-240VAC power supply. Connect the fan's High, Medium, and Low speed wires to the corresponding terminals on the controller. The L-damper ON/OFF connections are also provided.
- EC 0-10V Fan Version: Connect the Live (L) and Neutral (N) wires from your 95-240VAC power supply. Connect the fan's 0-10V control wires (FAN 0-10V and GND) to the controller. Fresh air and exhaust fan connections are also shown.
- EC PWM Fan Version: Connect the Live (L) and Neutral (N) wires from your 95-240VAC power supply. Connect the fan's PWM control wires (FAN PWM and GND) to the controller. Fresh air and exhaust fan connections are also shown.
WARNING: All wiring should be performed by a qualified electrician and with the power supply disconnected to prevent electric shock.
7. Operating Instructions
The HESSWAY G7 controller offers various operating modes and customizable settings to maintain optimal air quality.
Basic Operation:
- Power On/Off: Press the ON/OFF button (labeled 18) to turn the controller on or off.
- Navigate Menus: Use the MENU/OK button (labeled 20) to enter the main menu. Use the arrow keys (labeled 14, 16, 19, 22) to navigate through options and adjust values. Press MENU/OK again to confirm selections or save changes.
- Switch Modes: Use the MODE button (labeled 21) to cycle through operating modes: Automatic, Manual, and Timing.
- Adjust Fan Speed: In Manual mode, use the up/down arrow keys (labeled 14, 22) to adjust fan speed between High, Medium, Low, and Off.
Key Settings:
- Date & Time: Access the 'Date' setting from the menu to set the current date and time. This is important for accurate timing functions.
- Backlight: Adjust screen backlight brightness and screen off time in the 'Backlight' menu for energy saving and comfort.
- Fan Settings: Configure fan-specific settings, such as AC three-speed fan control, or EC 0-10V/PWM output options.
- Timing Control: Set weekly timing schedules for different fan speeds. This allows for automated air quality management based on your daily routine.
- Filter Settings: Monitor filter life and reset the filter working time after replacement.
- PM2.5 Control Parameters: Adjust the return difference for PM2.5 control, setting thresholds for low, medium, and high fan speeds.
- CO2 Control Parameters: Adjust the return difference for CO2 control, setting thresholds for low, medium, and high fan speeds.
- VOC Gas Control Parameters: Adjust the return difference for VOC gas control, setting thresholds for low, medium, and high fan speeds.
- Accessibility: Enable or disable features like humidification, dehumidification, negative ion, electric auxiliary heating, electrostatic precipitator, bypass, and UV sterilization (if supported by your ventilation system).
Image: Screenshot of the HESSWAY G7 controller display showing CO2 control parameters, including return difference and fan speed thresholds.
Smart Voice Control & Remote Monitoring:
The G7 controller supports smart voice control through platforms like Google Assistant and Amazon Alexa, and remote monitoring via the Tuya Smart app. This allows you to manage your air quality from anywhere.
Image: Visual representation of the HESSWAY G7 controller's compatibility with smart voice assistants like Google Assistant and Amazon Alexa, via Tuya.
Image: A smartphone displaying the Tuya app interface, demonstrating remote monitoring of air quality data from the HESSWAY G7 controller.
8. User Tips
- Optimize with Timing: Utilize the weekly timing function to automatically adjust fan speeds based on occupancy or peak pollution times, ensuring fresh air when needed without constant manual intervention.
- Monitor Filter Life: Regularly check the filter indicator and replace filters as recommended to maintain optimal air purification efficiency and prevent strain on your ventilation system.
- Child Lock for Safety: Enable the child lock feature to prevent accidental changes to settings, especially in households with young children.
- Remote Convenience: Leverage the Tuya Smart app for remote monitoring and control. This allows you to check air quality and make adjustments even when you're away from home.
- Smart Home Integration: Integrate the controller with Google Assistant or Amazon Alexa for hands-free control and seamless inclusion into your smart home ecosystem.
9. Maintenance
To ensure the longevity and accurate performance of your HESSWAY G7 controller, follow these maintenance guidelines:
- Cleaning: Gently wipe the screen and exterior with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the display or casing.
- Sensor Care: Keep the sensor vents clear of dust and debris. Do not attempt to clean the internal sensors directly unless specifically instructed.
- Filter Replacement: If your ventilation system uses filters, ensure they are replaced according to the manufacturer's recommendations. The G7 controller provides a filter life indicator to assist with this.
- Software Updates: Periodically check the Tuya Smart app for any available firmware updates for your controller to ensure optimal performance and access to new features.
10. Troubleshooting
If you encounter issues with your HESSWAY G7 controller, refer to the following common troubleshooting steps:
- No Power: Check the power supply connection and ensure the circuit breaker is not tripped. Verify that the wiring is correctly installed according to the wiring diagram.
- Display Not Responding: Try restarting the device by turning off and on the power supply. If the issue persists, ensure the touch buttons are clean and free from obstructions.
- Inaccurate Readings: Ensure the sensor vents are not blocked. Allow the device to warm up for at least 2 minutes after powering on for accurate readings. If readings seem consistently off, consider recalibration if an option is available in the advanced settings (refer to the full manual for details).
- WIFI Connection Issues:
- Ensure your Wi-Fi network is 2.4 GHz. The controller does not support 5GHz networks.
- Verify that the Wi-Fi password entered is correct.
- Make sure the controller is within range of your Wi-Fi router.
- Try resetting the controller's Wi-Fi settings and re-pairing with the Tuya app.
- Fan Not Responding: Check the wiring connections to the fan. Ensure the correct fan output type is selected in the controller's settings. Verify that the fan itself is functioning correctly.
- Child Lock Engaged: If controls are unresponsive, check if the child lock is active (indicated by the lock icon). Long press the CHILD LOCK button (labeled 17) for 5 seconds to disable it.
For persistent issues, please contact customer support.
11. Warranty and Support
HESSWAY products are designed for reliability and performance. For any technical assistance, warranty claims, or product inquiries, please contact your retailer or the official HESSWAY customer support channel. Keep your purchase receipt as proof of purchase for warranty services.
