1. Introduction
Thank you for choosing the LOEFME STS12-1025 Electric Dehumidifier. This manual provides important information for the safe and efficient operation of your new appliance. Please read it thoroughly before use and keep it for future reference.
Figure 1: LOEFME STS12-1025 Dehumidifier highlighting key features.
Product Overview
The LOEFME STS12-1025 is a high-efficiency electric dehumidifier designed to reduce indoor humidity, prevent mold growth, and create a healthier living environment. It features a 16L/day dehumidification capacity, a 2L water tank, and multiple operating modes for versatile use in various spaces like bedrooms, basements, and laundry rooms.
Video 1: Product demonstration and feature overview.
2. Safety Instructions
- Always place the dehumidifier on a stable, level surface.
- Ensure adequate clearance around the unit for proper airflow (at least 20cm from walls or furniture).
- Do not block the air inlet or outlet.
- Do not operate the unit near flammable gases or combustible materials.
- Keep the unit away from water sources and direct sunlight.
- Unplug the unit before cleaning or performing any maintenance.
- Do not allow children to operate the dehumidifier without supervision. Use the Child Lock feature to prevent accidental changes to settings.
- If the power cord is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified persons to avoid a hazard.
3. Package Contents
Upon unpacking, please ensure all items are present and in good condition:
- 1 × LOEFME STS12-1025 Dehumidifier
- 1 × Instruction Manual
- 1 × 1-meter Water Pipe (for continuous drainage)
- 1 × 3-meter Water Pipe (for continuous drainage)
Figure 2: Included accessories with the dehumidifier.
4. Setup and Installation
4.1 Unpacking
Carefully remove the dehumidifier from its packaging. Retain the packaging for future storage or transport.
4.2 Placement
Place the dehumidifier in an area where dehumidification is needed. For optimal performance, ensure the unit is placed on a firm, level surface. The unit is equipped with universal wheels for easy mobility.
- Maintain at least 20 cm (8 inches) of space around the unit for proper air circulation.
- Avoid placing the unit in direct sunlight or near heat sources.
- The dehumidifier is suitable for various rooms including bedrooms, bathrooms, living rooms, laundry rooms, and cloakrooms.
Figure 3: Dehumidifier with universal wheels for easy movement.
Figure 4: Ideal placement in different household areas.
4.3 Drainage Options
Your dehumidifier offers two drainage methods:
- Water Tank Drainage: The unit collects water in its internal 2L water tank. When the tank is full, the dehumidifier will automatically shut off and an indicator light will illuminate. Carefully remove the tank, empty the water, and reinsert it to resume operation.
- Continuous Drainage: For extended operation without needing to empty the water tank, you can connect a drainage pipe.
- Locate the continuous drainage outlet on the back of the unit.
- Connect one of the provided water pipes (1m or 3m) to the outlet.
- Ensure the other end of the pipe is placed into a suitable drain (e.g., floor drain, large bucket) and that the pipe is sloped downwards to allow water to flow freely by gravity.
Figure 5: Illustration of the two drainage options.
5. Operating Instructions
The control panel is located on the top of the unit and features an LED display and several buttons for easy operation.
Figure 6: Control Panel Layout.
5.1 Control Panel Functions
- POWER Button: Press to turn the unit ON or OFF.
- MODE Button: Cycles through the three operating modes:
- Cont (Continuous): Ideal for constantly damp spaces, runs continuously regardless of humidity level.
- Dehumidify: Maintains humidity within a set range (40%-80% RH).
- Dry (Clothes Drying): Provides powerful dehumidification to quickly dry clothes.
- RH% / Hr Buttons (+/-): Adjusts the target humidity level (in Dehumidify mode) or sets the timer duration.
- TIMER Button: Sets the 24-hour timer for automatic power ON/OFF.
- CHILD LOCK Button: Activates/deactivates the child lock to prevent accidental changes to settings. Hold for a few seconds to engage.
- DEFROST Indicator: Illuminates when the unit is performing automatic defrosting.
- LED Display: Shows current humidity level, timer settings, or error codes.
Figure 7: Explanation of the three working modes.
5.2 Initial Operation
- Plug the dehumidifier into a grounded electrical outlet.
- Press the POWER button to turn on the unit. The LED display will show the current room humidity.
- Select your desired operating mode using the MODE button.
- If in Dehumidify mode, use the RH% +/- buttons to set your target humidity (e.g., 50% for comfortable living).
5.3 Automatic Defrost
The unit is equipped with an automatic defrost function. If frost builds up on the evaporator coils, the unit will automatically enter defrost mode. The DEFROST indicator will light up, and the dehumidification function will temporarily pause until the frost has melted. This is normal operation and ensures efficient performance.
5.4 Child Lock
To activate the Child Lock, press and hold the CHILD LOCK button for a few seconds until the indicator lights up. This will disable all other buttons on the control panel. To deactivate, press and hold the CHILD LOCK button again.
Figure 8: Child Lock design for safety.
6. Maintenance
Regular maintenance ensures the longevity and efficient operation of your dehumidifier.
6.1 Cleaning the Air Filter
The dehumidifier is equipped with a removable and washable air filter to capture dust and other airborne particles. A clean filter improves air quality and dehumidifier efficiency.
- Turn off the unit and unplug it from the power outlet.
- Locate and remove the air filter (typically on the back or side of the unit).
- Clean the filter with a vacuum cleaner or wash it gently with warm, soapy water. Rinse thoroughly.
- Allow the filter to air dry completely before reinserting it into the unit.
Figure 9: Nano-level filter for cleaner air.
6.2 Cleaning the Water Tank
To prevent mold and bacteria growth, clean the water tank regularly.
- Turn off and unplug the dehumidifier.
- Remove the water tank and empty any collected water.
- Wash the tank with mild detergent and warm water. Rinse thoroughly.
- Dry the tank completely before placing it back into the unit.
6.3 Exterior Cleaning
Wipe the exterior of the dehumidifier with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners, as they may damage the surface.
7. Troubleshooting
If you encounter issues with your dehumidifier, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Dehumidifier does not turn on. | No power; Water tank full or incorrectly inserted; Child Lock active. | Check power connection; Empty and reinsert water tank correctly; Deactivate Child Lock. |
| Unit is running but not collecting water. | Room temperature too low (below 5°C); Air filter clogged; Humidity setting too high; Continuous drainage pipe is connected and working. | Ensure room temperature is within operating range (5-35°C); Clean air filter; Lower target humidity setting; Check if continuous drainage is active and pipe is correctly installed. |
| Unit is noisy. | Unit not on a level surface; Air filter clogged; Obstruction in fan. | Place on a level surface; Clean air filter; Check for and remove any obstructions. |
| Water leaks from the unit. | Water tank not properly seated; Continuous drainage pipe loose or blocked. | Ensure water tank is correctly inserted; Check continuous drainage pipe connection and ensure it's not blocked. |
If the problem persists after trying these solutions, please contact customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | LOEFME |
| Model Number | STS12-1025 |
| Type | Compressor Dehumidifier |
| Dehumidification Capacity | 16L/day (at 30℃/80% RH); 5.7L/day (at 27℃/60% RH) |
| Water Tank Capacity | 2L |
| Rated Voltage | 220-240V |
| Rated Frequency | 50-60Hz |
| Rated Input Power | 195W (at 27°C/60% RH) |
| Maximum Input Power | 260W (at 35℃/80% RH) |
| Air Flow | 150m³/h |
| Working Temperature Range | 5°C - 35°C |
| Sound Level | ≤38dB |
| Dimensions (L x W x H) | 275 x 195 x 445mm |
| Functions | Automatic Bucket Full Shut-Off, Automatic Defrost, Bucket Full Indicator Light, External Drain Connect, LED Display, Removable Water Tank, Washable Air Filter, 24h Timer, Child Lock, Adjustable Humidistat. |
| Certification | CE |
| Origin | Mainland China |
Figure 10: Product dimensions.
9. User Tips
- Quiet Operation: The dehumidifier operates quietly (below 38dB in auto mode), making it suitable for bedrooms and living areas without disturbing sleep or daily activities.
- Easy Mobility: Utilize the integrated wheels and handle to easily move the dehumidifier between rooms as needed.
- Continuous Drainage for Basements: For basements or areas requiring constant dehumidification, connect the continuous drainage pipe to avoid frequent manual emptying of the water tank.
- Child Safety: Always engage the Child Lock feature when children are present to prevent them from tampering with the settings.
- Energy Saving: Use the 'Dehumidify' mode and set a target humidity level (e.g., 50-60% RH) to allow the unit to operate only when necessary, saving energy.
- Clothes Drying: The 'Dry' mode is highly effective for quickly drying clothes indoors, especially during humid weather.
Figure 11: Quiet operation for undisturbed environments.
10. Warranty and Support
For any questions, technical assistance, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.





