Hupro 555L
Hupro Large Room Humidifier
Model: 555L
Instruction Manual
Introduction
Thank you for choosing the Hupro Large Room Humidifier, Model 555L. This ultrasonic humidifier is designed to provide optimal humidity levels in large rooms, offering both warm and cool mist options. It features a 5.5-liter capacity, smart humidity control, and an integrated aroma diffuser. Please read this manual thoroughly before operation to ensure proper use and maintenance.
Product Features
- 5.5L Large Capacity: Provides up to 40 hours of continuous humidification for rooms up to 500 sq. ft.
- Warm & Cool Mist: Choose between warm mist for heated environments and cool mist for conditioned air, helping to alleviate dry air symptoms.
- Ultrasonic Operation: Generates superfine mist through 2.4 billion vibrations per minute, ensuring quiet operation.
- Smart Humidity Control System: Features automode, constant humidity settings, and 3 speed levels for precise control.
- Air Ionization: Helps remove dust, pollen, smoke, and other allergens from the air.
- Ceramic Filter: Softens and demineralizes water, reducing white dust and improving mist quality.
- Inbuilt Aroma Diffuser: Allows for the addition of essential oils to enhance your environment.
- Detachable Water Tank: Designed for easy refilling and cleaning with a 5-inch opening.
- 10-Hour Timer & Sleep Mode: Convenient features for automated operation and undisturbed rest.
- Automatic Shut-Off: Ensures safety and energy efficiency when water levels are low.
- Remote Control: For convenient operation from a distance.







Setup
- Unpack: Carefully remove the humidifier and all accessories from the packaging.
- Placement: Place the humidifier on a firm, flat, water-resistant surface at least 6 inches away from walls and furniture. Ensure the mist outlet is not directed at walls or furniture.
- Fill Water Tank:
- Remove the water tank from the base.
- Unscrew the water filter cap at the bottom of the tank.
- Fill the tank with clean, cool tap water. Distilled or demineralized water is recommended to minimize mineral buildup and white dust.
- Securely screw the water filter cap back on.
- Place the filled water tank back onto the humidifier base, ensuring it is seated correctly.
- Power Connection: Plug the power cord into a standard 110V electrical outlet.
- Initial Operation: The unit is now ready for operation.
Operating Instructions
The Hupro Humidifier can be operated using the touch controls on the front panel or the included remote control.
- Power On/Off: Press the power button (⏻) to turn the unit on or off.
- Mist Level Adjustment: Use the mist level button to cycle through low, medium, and high mist output settings.
- Warm/Cool Mist Selection: Press the mist temperature button to switch between warm and cool mist modes.
- Humidity Setting (Humidistat): Press the humidity button to set your desired humidity level. The unit will automatically maintain this level.
- Timer Function: Press the timer button to set the humidifier to operate for a specific duration (up to 10 hours).
- Sleep Mode: Activate sleep mode for quiet operation and dimmed display lights, ideal for nighttime use.
- Aroma Diffuser: Open the aroma box located on the side or back of the unit. Add a few drops of your preferred essential oil onto the aroma pad. Close the box. The mist will carry the fragrance into the air.
Maintenance
Regular cleaning and maintenance are crucial for the optimal performance and longevity of your humidifier.
- Daily Maintenance:
- Empty and rinse the water tank and water basin daily.
- Allow all parts to air dry before reassembling or refilling.
- Weekly Cleaning (Water Tank & Basin):
- Unplug the unit and remove the water tank.
- Pour 2 cups of undiluted white vinegar into the water tank and swish to coat the inside. Let it stand for 20 minutes.
- For the water basin, carefully pour white vinegar into the basin, ensuring it covers the heating element (if applicable) and ultrasonic transducer. Let it stand for 20 minutes.
- Use a soft brush or cloth to clean any mineral buildup.
- Rinse both the tank and basin thoroughly with clean water until the smell of vinegar is gone.
- Ceramic Filter Cleaning:
- The ceramic filter is located inside the water tank cap.
- Rinse the ceramic filter under running water every 2-4 weeks, or as needed, to remove any accumulated minerals.
- Replace the ceramic filter every 6-12 months, depending on water hardness and usage.
- Aroma Pad Cleaning:
- Remove the aroma pad from the aroma box.
- Clean the pad with mild soap and water, then rinse thoroughly.
- Allow the pad to air dry completely before reinserting or adding new essential oils. Replace if heavily soiled or damaged.
- Storage: When not in use for extended periods, clean the unit thoroughly, drain all water, and store it in a cool, dry place.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on. | No power; Unit not plugged in; Power outlet malfunction. | Ensure the power cord is securely plugged into a working electrical outlet. Check the circuit breaker. |
| No mist or low mist output. | Low water level; Water tank not properly seated; Mineral buildup on transducer; Air vent blocked. | Refill the water tank. Ensure the water tank is correctly placed on the base. Clean the ultrasonic transducer and water basin as per maintenance instructions. Check for any obstructions in the air vent. |
| "No water" error message, but tank is full. | Water tank not properly seated; Sensor malfunction; Mineral buildup on sensor. | Remove and re-seat the water tank firmly. Clean the water level sensor in the base with a soft cloth. |
| Unusual noise. | Unit not on a flat surface; Water level too low; Foreign object in water basin. | Place the humidifier on a stable, flat surface. Refill the water tank. Check the water basin for any debris and remove it. |
| White dust around the unit. | Hard water used. | Use distilled or demineralized water. Clean the ceramic filter regularly. |
| Remote control not working. | Dead battery; Obstruction between remote and unit; Remote sensor blocked. | Replace the battery in the remote control. Ensure there is a clear line of sight between the remote and the humidifier's sensor. |
Specifications
| Brand | Hupro |
| Model Name | 555L (PRO-773) |
| Capacity | 5.5 Liters |
| Operation Mode | Ultrasonic |
| Mist Type | Warm & Cool Mist |
| Special Features | Quiet, Aroma Diffuser, Humidistat, Air Ionization, Automatic Shut-Off |
| Filter Type | Ceramic |
| Control Method | Touch, Remote |
| Voltage | 110 Volts |
| Wattage | 40 Watts |
| Product Dimensions | 1 x 1 x 1 inches |
| Item Weight | 6.71 pounds |
| Color | Black |
| Room Type | Office, Bedroom (suitable for large rooms up to 500 sq. ft.) |
Warranty and Support
The Hupro Large Room Humidifier (Model 555L) typically comes with a one-year limited warranty from the date of purchase, covering defects in materials and workmanship under normal use.
For warranty claims, technical support, or any questions regarding your product, please contact Hupro Customer Service. Refer to the product packaging or the official Hupro website for the most current contact information (phone number, email, or support portal).
When contacting support, please have your product model number (555L) and proof of purchase readily available.
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