Sejoy JSQ-F50A1-WHI-EU
Sejoy 5L Warm & Cool Mist Humidifier
Model: JSQ-F50A1-WHI-EU
Introduction
Thank you for purchasing the Sejoy 5L Warm & Cool Mist Humidifier. This device is designed to improve the air quality in your home by maintaining optimal humidity levels, providing relief from dry air symptoms and creating a more comfortable environment. Please read this manual thoroughly before operation and retain it for future reference.

Image: The Sejoy 5L Warm & Cool Mist Humidifier, showcasing its transparent water tank and control panel.
Safety Information
To ensure safe operation and prevent damage, please observe the following safety precautions:
- Always place the humidifier on a firm, flat, water-resistant surface away from direct sunlight and heat sources.
- Do not place the humidifier near electronic devices or furniture that may be damaged by moisture.
- Do not immerse the base unit in water or other liquids.
- Unplug the humidifier before filling, cleaning, or moving it.
- Do not add essential oils directly into the water tank. Use the designated aroma tray only.
- Keep out of reach of children and pets.
- Use only clean, cool tap water. Distilled or demineralized water is recommended to prevent mineral buildup.
- If the humidifier is not working properly, do not attempt to repair it yourself. Contact customer support.
Product Overview
Familiarize yourself with the components of your Sejoy Humidifier:

Image: Key features of the Sejoy Humidifier, including its 5L water tank, warm/cool mist capability, touch screen, low water protection, and essential oil diffuser.
Main Components:
- Water Tank: 5-liter capacity for extended operation.
- Mist Nozzle: Rotatable for directing mist.
- Base Unit: Contains the ultrasonic transducer and control panel.
- Control Panel: Touch-sensitive buttons for various functions.
- Aroma Tray: For adding essential oils (do not add to water tank).
- Power Cord: For connecting to an electrical outlet.
Setup
Follow these steps for initial setup:
- Unpack: Carefully remove all packaging materials and ensure all components are present.
- Placement: Place the humidifier on a flat, stable surface at least 6 inches (15 cm) away from walls and furniture.
- Fill Water Tank:

Image: A hand pouring water directly into the top of the humidifier, highlighting its convenient top-fill design for easy refills.
The Sejoy humidifier features a convenient top-fill design. You can either pour water directly into the top opening or remove the water tank to fill it at a sink. Fill with clean, cool tap water up to the MAX line. Do not overfill.
- Connect Power: Plug the power cord into a standard electrical outlet. The unit will beep once, and the display will light up briefly.
Operating Instructions
Your Sejoy Humidifier offers various modes and settings for optimal comfort.

Image: The smart touch screen operation panel of the Sejoy Humidifier, showing controls for timing, constant humidity, sterilization, and mist level adjustments.
Power On/Off:
- Touch the Power button (⏻) to turn the unit on or off.
Mist Level Adjustment:

Image: Visual representation of customizable mist levels (Low, Mid, High) to suit different humidity needs, from general dry to extremely dry conditions.
- Touch the Mist Level button (∿) repeatedly to cycle through Low, Medium, and High mist output settings.
Warm/Cool Mist Selection:

Image: The humidifier demonstrating its ability to produce both cool and warm mist, with a 5L tank providing over 24 hours of continuous operation.
- Touch the Warm Mist button (♨) to activate the warm mist function. Touch again to switch back to cool mist.
Automatic Humidity Control:

Image: The humidifier in a home setting, illustrating how it helps create a perfect atmosphere by adjusting mist based on humidity levels (e.g., increasing mist if humidity is below 30%, maintaining between 40-60%, and auto-shutoff if above 85%).
- Touch the Humidity button (%RH) to set your desired humidity level (e.g., 40% to 60%). The humidifier will automatically adjust mist output to maintain this level.
Timer Function:
- Touch the Timer button (🕒) to set an operating time from 1 to 12 hours. The unit will automatically turn off when the set time expires.
Sleep Mode:
- Touch the Sleep Mode button (🌙) to dim the display lights and operate at the lowest noise level for undisturbed sleep.
Aroma Diffuser:
- Pull out the aroma tray located at the base of the unit. Add a few drops of essential oil onto the aroma pad. Slide the tray back in.
Maintenance
Regular cleaning and maintenance will ensure the longevity and optimal performance of your humidifier.

Image: An infographic providing healthy tips for humidifier use, including regular cleaning, keeping dry when not in use, using purified water, only adding oil to the aroma tray, and avoiding excessive humidification.
Daily Maintenance:
- Empty and rinse the water tank and base daily.
- Refill with fresh, cool water.
Weekly Cleaning (or every 3-5 days):
- Unplug the humidifier and empty all water from the tank and base.
- Descaling the Tank: Pour 2-3 tablespoons of white vinegar into the water tank and swish it around. Let it sit for 20-30 minutes. Rinse thoroughly with clean water.
- Cleaning the Base: Gently wipe the ultrasonic transducer (the small disc in the center of the base) and the heating element (if applicable for warm mist) with a soft brush or cloth dipped in white vinegar. Do not scrub or use abrasive cleaners.
- Rinse all parts thoroughly with clean water until the smell of vinegar is gone.
- Dry all parts completely before reassembling.
Storage:
- If the humidifier will not be used for an extended period, clean and dry all components thoroughly.
- Store in a cool, dry place.
Troubleshooting
If you encounter issues with your humidifier, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or low mist output | Lack of water; Mineral buildup on transducer; Mist nozzle blocked; Unit not level. | Refill water tank; Clean transducer with vinegar solution; Check and clear nozzle; Place on a flat surface. |
| Unusual odor | Stale water; New unit smell; Dirty water tank. | Change water daily; The smell should dissipate after initial use; Clean the water tank and base thoroughly. |
| White dust around humidifier | Hard water minerals. | Use distilled or demineralized water. Clean the unit regularly. |
| Unit turns off automatically | Water tank empty; Desired humidity reached; Timer expired. | Refill water tank; Adjust desired humidity or turn off auto mode; Reset timer. |
| Touch screen unresponsive | Temporary software glitch; Moisture on screen. | Unplug and replug the unit; Wipe the screen dry with a soft cloth. |
If the problem persists after trying these solutions, please contact customer support.
Specifications

Image: Dimensions of the Sejoy Humidifier, showing approximate measurements of 8 inches (width), 10 inches (depth), and 10 inches (height).
| Feature | Detail |
|---|---|
| Brand | Sejoy |
| Model Number | JSQ-F50A1-WHI-EU |
| Color | White |
| Dimensions (L x W x H) | 19.05 x 24.38 x 24.64 cm (approx. 7.5 x 9.6 x 9.7 inches) |
| Weight | 1.97 Kilograms (approx. 4.34 lbs) |
| Water Tank Capacity | 5 Liters (1.32 Gallons) |
| Max Mist Output | Up to 450 ml/h |
| Continuous Operation Time | Up to 25 hours |
| Recommended Room Size | Up to 60 m² (650 sq ft) |
| Power | 23.64 Watts |
| Voltage | 120 Volts (AC) |
| Special Features | Timer, Removable Tank, Diffuser, Remote Control (not explicitly mentioned in features but in specs), Silent Operation, Warm & Cool Mist, Automatic Humidity Control, Top-Fill Design |
Warranty and Support
Sejoy products are manufactured to high-quality standards. For information regarding warranty coverage, technical support, or replacement parts, please refer to the warranty card included with your purchase or visit the official Sejoy website. Please have your model number (JSQ-F50A1-WHI-EU) and purchase date ready when contacting support.
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