1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your HOROW B0403 Elongated Bidet Toilet Seat. Please read this manual thoroughly before installation and use to ensure proper function and safety. Keep this manual for future reference.

Image 1.1: Top-down view of the HOROW B0403 Elongated Bidet Toilet Seat, showing its sleek white design and integrated side control panel.
2. Safety Information
Please observe the following safety precautions to prevent injury or damage to the product:
- Ensure the bidet seat is connected to a grounded electrical outlet.
- Do not immerse the product in water or spray water directly onto the electrical components.
- Unplug the unit before cleaning or performing any maintenance.
- Do not allow children or individuals with reduced physical, sensory, or mental capabilities to operate the bidet without supervision.
- Avoid using abrasive cleaners or harsh chemicals on the bidet seat.
- This product is designed for indoor use only.
3. Package Contents
Verify that all components are present before beginning installation:
- HOROW B0403 Bidet Seat
- Installation Hardware (bolts, nuts, washers, T-valve, water supply hose)
4. Product Features
The HOROW B0403 Bidet Toilet Seat offers a range of features designed for comfort and hygiene:
- Elongated Design: Specifically designed to fit elongated toilets, including the T0338W model.
- Smart Seat Sensor: Automatically detects user presence to activate functions only when seated.
- Soft-Closing Seat: Prevents slamming and reduces noise.
- Adjustable Heated Seat: Customizable temperature settings for comfort.
- Multi-Function Nozzle: Offers Rear Wash, Front Wash (feminine), and Massage Wash with adjustable water temperature, pressure, and nozzle position. The stainless steel nozzle self-cleans before and after each use.
- Warm Air Dryer: Adjustable air temperature for efficient drying, reducing the need for toilet paper.
- LED Night Light: Provides illumination for nighttime use without disturbing others.
- Side Arm Control Panel: Intuitive controls for easy operation of all functions.

Image 4.1: Overview of key features including heated seat, heated water, warm air dryer, and LED night light, along with the requirement for an electrical outlet.
5. Installation Instructions
Before installation, ensure you have access to a standard electrical outlet near the toilet and that your toilet is an elongated type. The HOROW B0403 is compatible with elongated toilets, including the T0338W model.
5.1 Preparation
- Turn off the water supply valve to your toilet.
- Flush the toilet to drain the tank.
- Disconnect the existing water supply hose from the toilet tank.
- Remove your existing toilet seat and lid.
5.2 Bidet Seat Installation
- Install the mounting plate onto the toilet bowl using the provided bolts and washers. Adjust the plate to align with the toilet bowl holes.
- Slide the bidet seat onto the mounting plate until it clicks into place.
- Install the T-valve onto the toilet's fill valve.
- Connect one end of the bidet's water supply hose to the T-valve and the other end to the bidet seat's water inlet.
- Reconnect the toilet's water supply hose to the T-valve.
- Turn on the water supply valve and check for leaks.
- Plug the bidet seat's power cord into a grounded electrical outlet.

Image 5.1: Illustration of the soft-close seat mechanism and the simple installation process, highlighting the included hardware.
6. Operation
The HOROW B0403 Bidet Toilet Seat is operated via the integrated side control panel. Functions are activated only when the smart seat sensor detects a user seated.

Image 6.1: Detailed view of the side control panel, illustrating icons for functions such as Rear Wash, Front Wash, Warm Air Dryer, and various temperature and position adjustments.
6.1 Control Panel Functions
| Icon | Function | Description |
|---|---|---|
| ◼ | Stops All Functions | Press to immediately stop any active washing or drying function. |
| 💦 | Rear Wash | Activates the rear cleansing spray. |
| 💦 | Front Wash (Feminine) | Activates the front cleansing spray for feminine hygiene. |
| 🌬 | Warm Air Dryer | Activates the warm air drying function. |
| + / - | Adjustable Water Pressure | Increases or decreases the water spray intensity. |
| ▶ / ◀ | Adjustable Nozzle Position | Moves the nozzle forward or backward for optimal cleansing. |
| 🌡 | Adjustable Water Temperature | Cycles through available water temperature settings. |
| 🌡 | Adjustable Seat Temperature | Cycles through available heated seat temperature settings (Low, Medium, High). |
| 🌬 | Adjustable Dryer Temperature | Cycles through available warm air dryer temperature settings. |
| UV | UV Light | Activates the UV sterilization light for the nozzle. |
| 💦 | Auto Wash | Initiates a pre-programmed wash cycle. |
| 💡 | Night Light | Turns the LED night light on or off. |
| H/C | H/C Massage | Activates a pulsating wash for a massage effect. |
6.2 Specific Function Details
Heated Seat

Image 6.2: The bidet seat illustrating the heated seat function, which can be adjusted to low, medium, or high settings.
Press the "Adjustable Seat Temp." button to cycle through the available temperature settings (e.g., Low, Medium, High) for the toilet seat.
Multi-Function Wash

Image 6.3: Visual representation of the bidet's multi-function wash capabilities, including rear, feminine, and massage washes, along with nozzle self-cleaning.
Select "Rear Wash" or "Front Wash" as desired. Use the water pressure and nozzle position adjustment buttons to customize your experience. The nozzle automatically cleans itself before and after each use.
Warm Air Dryer

After washing, press the "Warm Air Dryer" button. Adjust the air temperature using the corresponding button for optimal comfort. The dryer has 4 adjustable air temperature levels.
LED Night Light

Image 6.5: The LED night light feature illuminating the toilet bowl with a soft blue glow, designed for convenience during nighttime use.
Press the "Night Light" button to activate or deactivate the gentle LED illumination, providing visibility in the dark.
Smart Seat Sensor

Image 6.6: The smart seat sensor, which automatically detects when a user is seated to enable bidet functions.
The bidet seat is equipped with a smart sensor that detects when a user is seated. Functions will only operate when the sensor is activated, preventing accidental sprays.
7. Maintenance
7.1 Cleaning the Bidet Seat
- Unplug the bidet seat from the electrical outlet before cleaning.
- Wipe the exterior surfaces with a soft, damp cloth and a mild, non-abrasive cleaner.
- Do not use harsh chemicals, abrasive pads, or solvents, as these can damage the finish.
- Ensure no water enters the electrical components.
7.2 Nozzle Cleaning
- The stainless steel nozzle performs an automatic self-cleaning cycle before and after each use.
- For manual cleaning, gently pull out the nozzle and wipe it with a soft cloth or brush and mild soap. Do not use excessive force.
8. Troubleshooting
If you encounter issues with your HOROW B0403 Bidet Toilet Seat, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power to the unit. | Power cord unplugged; circuit breaker tripped; outlet malfunction. | Ensure the power cord is securely plugged in. Check your household circuit breaker. Test the outlet with another device. |
| No water spray. | Water supply valve closed; bidet water hose kinked; seat sensor not activated. | Open the toilet's water supply valve. Check the bidet water hose for kinks. Ensure you are properly seated on the bidet seat to activate the sensor. |
| Water temperature is not warm. | Water heater setting too low; water heater malfunction. | Adjust the water temperature setting on the control panel. Allow a few moments for the water to heat up. |
| Heated seat is not warm. | Heated seat setting too low; seat sensor not activated. | Adjust the heated seat temperature setting on the control panel. Ensure you are properly seated to activate the heating element. |
| Weak water pressure. | Water pressure setting too low; water supply partially closed; clogged nozzle. | Increase the water pressure setting. Ensure the water supply valve is fully open. Clean the nozzle if it appears clogged. |
9. Specifications
| Attribute | Detail |
|---|---|
| Brand | HOROW |
| Model Number | B0403 (HR-B0403) |
| Color | White |
| Material | Plastic |
| Style | Modern |
| Shape | Oval (Elongated) |
| Product Dimensions (L x W) | 20.4" x 18.3" |
| Item Weight | 9 Pounds |
| Manufacturer | HUNAN HOROW SMART HOME CO.,LTD |
| Compatibility | Elongated toilets (e.g., T0338W) |

Image 9.1: Detailed technical drawing showing the dimensions of the HOROW B0403 bidet toilet seat, including length, width, and height measurements.
10. Warranty and Support
HOROW provides a 12-Month Replacement Warranty for this product. If you encounter any issues or have questions regarding your HOROW B0403 Bidet Toilet Seat, please contact our customer support team. Our team aims to respond promptly within 24 hours.
For support, please refer to the contact information provided with your purchase or visit the official HOROW website.





