FLOUREON BYC17.GH3
Floureon BYC17.GH3 Programmable Wall Thermostat User Manual
Model: BYC17.GH3
Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Floureon BYC17.GH3 Programmable Wall Thermostat. This device is designed for electric heating systems and features advanced single-chip computer control technology to maintain your desired temperature efficiently.
Key features include a square LCD screen with white backlight, multiple time modes (5+2/6+1/7 days, 6 daily levels), manual or automatic operation, power-off time memory, and child lock protection.
Product Overview







Setup and Installation
Safety Precautions
- Ensure power is disconnected before installation to prevent electric shock.
- Installation should be performed by a qualified electrician.
- Follow all local electrical codes and regulations.
Mounting the Thermostat
- Turn off the main power supply to the heating system.
- Remove the front panel of the thermostat to access the mounting holes.
- Mount the thermostat base to the wall using the provided mounting screws. Ensure it is level.
- Refer to the wiring diagram for correct connections.
Wiring Diagram

Connect the wires according to the diagram. The thermostat supports both internal and external sensors. Ensure the Live Line (L) and Null Line (N) are correctly identified and connected to the AC power input. The heating load connects to the LOAD terminals. The external sensor cable (3m provided) connects to T1 and T2.

After wiring, carefully reattach the front panel to the thermostat base. Restore power to the heating system.
Operating Instructions
Display and Buttons
Refer to the "Product Overview" section for a detailed labeled diagram of the thermostat's display and buttons.
- Power ON/OFF Button: Press to turn the thermostat on or off.
- Menu/Auto Switch (M) Button: Press to switch between manual and automatic modes, or to enter menu settings.
- Up Key (△): Increases temperature setting or navigates menu options upwards.
- Down Key (▽): Decreases temperature setting or navigates menu options downwards.
- Clock Setting Button: Used to set the current time and day.
Setting the Time and Day
- Press the Clock Setting button.
- Use the Up (△) and Down (▽) keys to adjust the hour, then press the Clock Setting button again to confirm and move to minutes.
- Repeat for minutes and day of the week.
Programming Schedule (5+2/6+1/7 Days)
The thermostat supports flexible programming with 6 daily levels. This allows you to set different temperatures for various times of the day across different weekly schedules.
- Press and hold the Menu (M) button for 3-5 seconds to enter programming mode.
- Use the Menu (M) button to cycle through the programming periods (e.g., Morning, Day, Evening, Night).
- Use the Up (△) and Down (▽) keys to adjust the desired temperature and time for each period.
- Press the Power ON/OFF button to exit programming mode and save settings.
Manual Mode Operation
In manual mode, the thermostat maintains a constant temperature set by the user, overriding the programmed schedule.
- Press the Menu (M) button briefly to switch to manual mode (indicated by a specific icon on the display).
- Use the Up (△) and Down (▽) keys to set your desired temperature.
- The thermostat will maintain this temperature until you switch back to automatic mode or change the setting.
Child Lock Protection
To prevent unauthorized changes, the thermostat features a child lock function.
- To activate: Press and hold both the Up (△) and Down (▽) keys simultaneously for 3-5 seconds until a lock icon appears on the display.
- To deactivate: Press and hold both the Up (△) and Down (▽) keys simultaneously for 3-5 seconds until the lock icon disappears.
Maintenance
The Floureon BYC17.GH3 thermostat requires minimal maintenance.
- Cleaning: Use a soft, damp cloth to clean the screen and casing. Do not use abrasive cleaners or solvents. Ensure the thermostat is powered off before cleaning.
- Inspection: Periodically check the wiring connections to ensure they are secure.
- Battery (if applicable): This model is directly powered and does not require battery replacement for operation. The internal clock retains settings during power outages.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Thermostat not powering on. | No power supply; incorrect wiring. | Check circuit breaker. Verify wiring connections according to the diagram. Consult a qualified electrician if unsure. |
| Heating system not responding to thermostat. | Incorrect wiring; thermostat in manual mode with low setpoint; heating system issue. | Ensure wiring is correct. Check if the thermostat is in automatic mode or if the manual setpoint is above the current room temperature. Verify the heating system is operational. |
| Temperature reading appears inaccurate. | Sensor obstruction; thermostat placed near heat source/draft. | Ensure the internal sensor is not blocked. Relocate the thermostat if it's in an unsuitable position (e.g., direct sunlight, near a window/door). |
| Keypad is locked. | Child lock function is active. | Press and hold both the Up (△) and Down (▽) keys simultaneously for 3-5 seconds to deactivate. |
Specifications
| Feature | Specification |
|---|---|
| Power Supply | 85-250 V AC 50/60 Hz (240 V optional) |
| Max Switching Power | 16 A |
| Internal Sensor Setting Range | 5-35 °C (Factory setting: 22 °C) |
| Internal Sensor Measurement Range | 0-40 °C |
| External Sensor Setting Range | 5-90 °C (Factory setting: overheat protection 50 °C) |
| External Sensor Measurement Range | 0-99 °C |
| Display Type | LCD Touchscreen |
| Display Size | 68 x 55 mm |
| Internal Sensor | NTC B = 3380 10 K @ 25 °C |
| External Sensor Cable Length | 3 meters |
| Setting Unit | 0.5 °C/step |
| Displayed Temperature Accuracy | 0.1 °C |
| Unit Dimensions | 85 x 85 x 12 mm |
| Backlight Color | White |
Warranty and Support
Information regarding specific warranty terms is not provided in the product description. Please refer to your purchase documentation or contact the retailer for warranty details.
For technical support or further assistance, please contact Floureon customer service through their official website or the retailer from whom you purchased the product.
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