1. Product Overview
The Ymiko BHT 005GB Electric Heating Thermostat is designed for precise temperature control in electric heating and floor heating systems. It features a backlit LCD screen, smart scheduling capabilities, and a power-off protector to maintain settings during power interruptions.

Figure 1: Front view of the Ymiko BHT 005GB Electric Heating Thermostat, displaying a set temperature of 30.0°C and current time.

Figure 2: Angled view of the thermostat, highlighting its sleek design and backlit display.
2. Setup and Installation
Installation of the BHT 005GB thermostat requires adherence to local electrical codes and should ideally be performed by a qualified electrician. The thermostat is designed for installation in a European standard 60mm concealed box.
2.1 Wiring Instructions
Ensure the main power supply is disconnected before beginning any wiring. Refer to the wiring diagram provided on the back of the thermostat unit for correct connections.
- Connect the Live (L) and Neutral (N) wires from the power supply to the corresponding terminals.
- Connect the heating load wires to the appropriate output terminals.
- If using an external sensor (NTC 10K), connect it to terminals 5 and 6.
- For Modbus communication, connect the White and Red wires to the designated Modbus terminals.

Figure 3: Rear view of the thermostat, illustrating the wiring terminals for power, heating load, external sensor, and Modbus communication.
2.2 Mounting
After wiring, secure the thermostat into the 60mm concealed box using the provided screws. Ensure the unit is flush with the wall surface.

Figure 4: The thermostat unit shown with the two screws required for secure mounting into a wall box.
3. Operating Instructions
The BHT 005GB thermostat features capacitive touch buttons for intuitive control. The backlit LCD screen displays both the target and measured temperatures, supporting Celsius and Fahrenheit units.
3.1 Basic Operation
- Power On/Off: Press the power button to turn the thermostat on or off.
- Temperature Adjustment: Use the up and down arrow buttons to adjust the desired temperature. The thermostat offers precise control with an accuracy of ±1℃.
- Mode Selection: Cycle through different operating modes (e.g., manual, automatic, timer) using the mode button.

Figure 5: The thermostat's front panel showing various indicator lights, which provide visual feedback on its current operational status.
3.2 Smart Scheduling
The thermostat supports smart scheduling with one week (5+1+1) presetting options and 6 programmable periods each day. This allows for energy-efficient heating tailored to your daily routine.
- Access the scheduling menu through the settings.
- Set desired temperatures and times for each period on weekdays, Saturday, and Sunday.
- Confirm settings to activate the schedule.
3.3 Timer Modes
Utilize countdown and cycle timers for specific heating needs.
- Countdown Timer: Set a duration after which the heating will turn off or change temperature.
- Cycle Timer: Program repetitive heating cycles for consistent comfort.
3.4 Power-Off Protector
The integrated power-off protector safeguards all your settings, ensuring they are retained even during power outages, eliminating the need for reprogramming.
4. Maintenance
The Ymiko BHT 005GB thermostat requires minimal maintenance to ensure optimal performance and longevity.
- Cleaning: Gently wipe the screen and casing with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or chemical sprays, as these can damage the surface or internal components.
- Environmental Conditions: Ensure the thermostat is not exposed to direct sunlight, extreme temperatures, or high humidity, which can affect its accuracy and lifespan.
- Inspection: Periodically check for any loose connections or visible damage. If any issues are observed, consult a qualified technician.
5. Troubleshooting
If you encounter issues with your Ymiko BHT 005GB thermostat, consider the following basic troubleshooting steps:
- No Display/No Power: Check the main power supply to the thermostat. Ensure all wiring connections are secure as per the installation instructions.
- Incorrect Temperature Reading: Verify that the thermostat is not installed near heat sources (e.g., direct sunlight, lamps) or drafts, which could affect sensor accuracy. If an external sensor is used, check its connection.
- Heating Not Activating: Confirm that the thermostat is in an active heating mode (e.g., not off or in a scheduled period with a low setpoint). Check the set temperature to ensure it is above the current room temperature.
- Settings Not Saving: The power-off protector should retain settings. If settings are lost, ensure stable power supply and consult the manual for advanced reset procedures if necessary.
For persistent issues, please refer to the support section for contact information.
6. Specifications
| Feature | Specification |
|---|---|
| Item Type | Electric Heating Thermostat |
| Model | BHT 005GB |
| Voltage | AC95-240V |
| Temperature Range | 5-45℃ |
| Current | 16A |
| Sensor | 3950, 10K |
| Time Error | <1% |
| Installation | European 60mm concealed box |
| Button Type | Capacitive touch button |
| IP Rating | IP20 |
| Package Dimensions | 6.3 x 3.54 x 2.36 inches |
| Item Weight | 8 ounces |
| Manufacturer | Ymiko |
| Item Model Number | Ymikotneiyo8uqv |

Figure 6: Technical drawing illustrating the dimensions of the Ymiko BHT 005GB thermostat in millimeters and inches.
7. Warranty and Support
7.1 Warranty Information
Specific warranty details for the Ymiko BHT 005GB thermostat are typically provided at the point of purchase or within the product packaging. Please retain your proof of purchase for any warranty claims. For detailed warranty terms and conditions, contact the seller or manufacturer directly.
Extended protection plans may be available from your retailer. For example, 3-Year and 4-Year protection plans are sometimes offered to cover potential issues beyond the standard manufacturer's warranty.
7.2 Customer Support
If you require assistance with installation, operation, or troubleshooting that is not covered in this manual, please contact Ymiko customer support or the retailer from whom you purchased the product.
You can visit the official Ymiko store for more information and support resources: Ymiko Store on Amazon