Kweetle LF002A
Kweetle 5500W 110V Tankless Electric Water Heater User Manual
Model: LF002A
1. Introduction
The Kweetle 5500W 110V Tankless Electric Water Heater provides instant, on-demand hot water, eliminating the need for a bulky storage tank. Its compact design and advanced features make it an efficient solution for various applications, including bathroom sinks, kitchen faucets, and other points of use. This manual will guide you through the safe installation, operation, and maintenance of your new water heater.

Image 1.1: Kweetle 5500W 110V Tankless Electric Water Heater with its remote control.
Key Features:
- Instant Hot Water: 5500W heating system provides hot water in approximately 3 seconds, reaching a maximum temperature of 55℃/131℉.
- Advanced Technology: Equipped with intelligent self-inspection for operational status and performance.
- Compact Design: Space-saving dimensions (8.5''L x 5.7''W x 2.8''H inches) allow for easy under-sink or wall-mount installation.
- Energy Efficient: Features a frequency conversion design that automatically adjusts power input based on flow and temperature, reducing energy waste.
- Dual Control Methods: Temperature can be adjusted via the LCD touch screen or the included remote control for convenience and safety.
2. Important Safety Warnings
Please read all safety instructions carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, property damage, or personal injury.
- Professional Installation Required: This appliance requires a professional electrician for installation due to specific electrical wiring requirements.
- Electrical Requirements: This is a 110V 5.5KW unit and must be HARD WIRED. It does NOT come with a plug. It draws a maximum of 50 amps and requires a 6AWG wire gauge and a 50A Double Pole Circuit Breaker.
- Water Connections: Use 1/2" NPT water connections.
- Water and Electricity Separation: The unit is designed with water and electricity separation for enhanced safety.
- Protection Features: Includes IPX4 Waterproof rating, Overheat Protection, Anti-High Voltage Protection, and Sensitive Leakage Protection.
- Do not operate the water heater if it is damaged or malfunctioning.
- Ensure proper grounding to prevent electric shock.

Image 2.1: Product dimensions and integrated safety features.
3. Package Contents
Please check the package contents upon opening to ensure all items are present and undamaged.
- Kweetle Tankless Water Heater (1 unit)
- Remote Control (1 unit)
- User Manual (this document)
4. Technical Specifications
| Feature | Specification |
|---|---|
| Model | LF002A |
| Power | 5500W |
| Voltage | 110V |
| Frequency | 50-60Hz |
| Temperature Range | 30-55℃ / 86-131℉ |
| Waterproof Rating | IPX4 |
| Required Circuit Breaker | ≥50AMP Double Pole |
| Wire Gauge | 6 AWG |
| Product Dimensions (L x W x H) | 8.5'' x 5.7'' x 2.8'' inches |
| Item Weight | 3 pounds |
| Mounting Type | Wall |
| Special Features | Dry Combustion Protection, LED Display, Lightweight, Rustproof, Temperature Lock |
5. Setup and Installation
WARNING: Installation must be performed by a qualified professional electrician and plumber in accordance with all local and national electrical and plumbing codes. Incorrect installation can lead to electric shock, fire, or water damage.
5.1 Mounting the Unit
- Choose a suitable wall location near the point of use, ensuring adequate space for water and electrical connections.
- The compact design allows for installation under a sink or in other confined spaces.
- Securely mount the unit to the wall using appropriate fasteners for your wall type.
5.2 Water Connections
- Connect the cold water inlet (blue) and hot water outlet (red) to the corresponding 1/2" NPT plumbing lines.
- Ensure all connections are tight and leak-free.
- Before connecting, flush the water lines to remove any debris.
5.3 Electrical Connections
This unit requires a dedicated 110V, 50A Double Pole Circuit Breaker and 6AWG wiring. It is a hardwired connection; no plug is provided.

Image 5.1: Electrical and water connection diagram. L (Live/Hot), N (Neutral), and Ground connections are shown.
- Connect the Live (L) wire to the corresponding terminal.
- Connect the Neutral (N) wire to the corresponding terminal.
- Connect the Ground wire to the grounding terminal.
- Verify all electrical connections are secure and comply with local electrical codes.
6. Operating Instructions
The Kweetle Tankless Water Heater features an intuitive LCD touch screen and a convenient remote control for easy operation.
6.1 Powering On/Off
- Ensure the water supply is open and the unit is filled with water before turning on the power.
- Press the ON/OFF button on the touch screen or remote control to power the unit on or off.
6.2 Adjusting Temperature
The desired hot water temperature can be set between 30-55℃ (86-131℉).

Image 6.1: The water heater can be controlled via its touch screen or the included remote control.
- Use the UP (⌃) and DOWN (⌄) buttons on the touch screen or remote control to increase or decrease the temperature.
- The LCD display will show the current hot water temperature and inlet water temperature.
6.3 Changing Temperature Units (℃/℉)
- To switch between Celsius (℃) and Fahrenheit (℉), turn on the water heater, then press and hold the ON/OFF key for a few seconds. The display unit will change.

Image 6.2: Detailed view of the LCD display and touch panel controls.
6.4 Energy Efficiency
The water heater utilizes a frequency conversion design, which automatically adjusts the power consumption based on the water flow and desired temperature. This ensures optimal energy usage and reduces electricity consumption when hot water demand is lower.
7. Maintenance
Regular maintenance helps ensure the longevity and efficient operation of your tankless water heater.
- Cleaning: Wipe the exterior of the unit with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Inspect Connections: Periodically check water and electrical connections for any signs of leaks or loose wiring. Address any issues promptly.
- Professional Inspection: It is recommended to have a qualified professional inspect the unit annually to ensure optimal performance and safety.
8. Troubleshooting
If you encounter issues with your water heater, refer to the table below for common problems and solutions. If the problem persists, contact customer support.
| Problem | Possible Cause & Solution |
|---|---|
| No hot water / Unit not turning on |
|
| Water not hot enough |
|
| Unit blows fuses/trips breaker |
|
| Cannot change ℃ to ℉ |
|
| Water leakage |
|
9. Warranty and Customer Support
For detailed warranty information, please refer to the warranty card included with your product packaging or visit the official Kweetle website. Keep your purchase receipt as proof of purchase for warranty claims.
Customer Support:
If you have any questions, require technical assistance, or need to report an issue, please contact Kweetle customer support through the following channels:
- Website: Visit the official Kweetle website for FAQs, support resources, and contact forms.
- Email/Phone: Refer to your product packaging or the Kweetle website for specific email addresses and phone numbers.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.