Lacidoll Cool & Warm Mist Ultrasonic Humidifier

Important Safety Instructions

Please read and retain these safety instructions before using the humidifier. Always follow these basic precautions to reduce the risk of fire, electric shock, and personal injury.

1. General Safety

Placement

• Place the humidifier on a firm, flat, and waterproof surface to ensure stability and prevent tipping.
• If using on a wooden floor, a waterproof mat is recommended to prevent excessive moisture buildup.
• Keep the humidifier at least 12 inches (30 cm) away from walls or wooden furniture.
• Place the humidifier where children and pets cannot access it. Children should not operate or clean the humidifier without supervision.
• Do not place the humidifier near heat sources such as stoves, ovens, radiators, or direct sunlight.
• Do not use outdoors. Intended for indoor household use only.

Temperature

• Before first use, let the humidifier sit at room temperature for 30 minutes to prevent potential damage to the water tank caused by sudden temperature changes.
• Operate the humidifier within a room temperature range of 41°F - 104°F (5°C - 40°C).
• If the temperature drops below 32°F (0°C), empty the water tank to prevent freezing and potential damage.

Operation

• The water temperature inside the tank will heat up during the heater operation of the warm mist function. Do not touch it directly as there is a risk of burns.
• Do not clean the humidifier immediately after turning it off, especially if it has been diffusing warm mist. Allow the humidifier to cool down completely before cleaning.
• Avoid running it in a closed room for extended periods without supervision.

2. Power and Cord Safety

• Do not handle the power cord or plug with wet hands.
• Do not damage, bend, pull, twist, bundle, or attempt to modify the power cord.
• Do not let the power cord hang over the edge of a table or counter or touch hot surfaces.
• Do not immerse the humidifier main unit, power cord, or plug in water.
• Ensure the plug fits securely into the outlet to prevent overheating.
• Always unplug the humidifier before refilling, moving, cleaning, or when not in use for an extended period.

3. Special Precautions

Avoid Over-Humidification

• If condensation appears on walls, windows, or around the device, turn off the humidifier or lower the mist output.

Do Not Inhale Mist Directly

• Avoid inhaling mist directly or directing mist toward people or objects.

Do Not Add Substances

• Do not add essential oils, medications, or other additives to the water tank or mist outlet, as this may damage the unit or affect health.

4. Maintenance and Repairs

No Self-Repair

• Do not disassemble, modify, or repair the humidifier yourself. Repairs should only be performed by the manufacturer or a qualified professional.

Routine Inspections

• Regularly check the power cord, plug, and water tank for any signs of damage.
• If any issues are detected, stop using the humidifier and contact customer service.

Package Contents

The package includes:

• Cover
• Water Chamber/Reservoir
• LED Display & Control Panel
• Night Light
• Water Level Window
• Water Tank
• Base
• Nozzle
• Water Inlet Tank
• Extended Mist Tube
• Main Unit
• Power Cord
• Sensor
• Aroma Pad Tray
• Handle
• Caster
• Silicone Tube
• Pump
• Mist Tube
• Heating Element
• Air Outlet
• Ultrasonic Disk
• Soft Cloth
• User Manual
• Mineral Absorption Pad
• Remote Control

Specifications

LED Display & Control Panel

The LED display shows various indicators:

• Hour Indicator
• Humidity/Time Value
• Night Light Indicator
• Relative Humidity (RH) Percentage Indicator
• Mist Level Indicator
• Warm Mist Indicator
• Cool Mist Indicator
• No Water Indicator
• Target Humidity Indicator

Control Panel Buttons:

• Power Button: Turns the humidifier on or off. If the tank is empty, the "?" icon will blink 5 times, and the humidifier will shut off automatically.
• Timer Button: Press to set your desired time (adjustable between 1-12 hours). The "H" icon will light up. Press repeatedly until "00" displays to cancel or reset. The timer is off by default.
• Night Light Button: Press to enable or disable the night light function. The "?" icon will light up. The night light is on by default.
• Cool Mist Button: Press to enable cool mist function. Press repeatedly to cycle through mist levels: high (03), medium (02), and low (01).
• Warm Mist Button: Press to enable warm mist function. Press repeatedly to cycle through mist levels: high (03), medium (02), and low (01). The humidifier may take 15 minutes to warm up.
• Sleep Mode Button: Press and hold for 3 seconds to turn sleep mode on. The screen will flash and then turn off. Press any button to reactivate. Sleep mode is off by default.
• Target Humidity Button: Press to set your desired humidity level (40%-90%). The "?" icon will light up. Press repeatedly until "--" displays to cancel. Target humidity is off by default. A comfortable humidity range is 40%-60%. The display shows current ambient humidity, not the target. The humidifier pauses misting when target humidity is reached and resumes when humidity falls below the set level.

Note: If the humidifier has been in storage or transit for a long time, the sensor may briefly display a "⚠️" warning. Restart the humidifier 2-3 times to reset the sensor.

The room may be too humid if you see water pooling near the humidifier. Lower the mist setting to avoid excess moisture.

Remote Control

The remote control operates the humidifier functions:

• Warm Mist Button: Turn warm mist on and adjust mist level.
• Cool Mist Button: Turn cool mist on and adjust mist level.
• Sleep Button: Enable or disable sleep mode.
• Night Light Button: Control the night light function.
• Timer Button: Set misting duration (1-12 hours).
• Target Humidity Button: Adjust desired humidity level (40%-90%).
• Power Button: Turn the humidifier on or off.

Battery Safety Instructions: Install dry batteries according to polarity. Do not mix new and used batteries or different brands/types. Replace depleted batteries promptly. If battery leakage occurs, remove batteries immediately, keep away from the device, rinse with clean water, and seek medical help if needed.

Before Use

When using your humidifier for the first time, remove wraps and follow these steps:

1. Remove the tube, remote control, and user manual from the water tank.
2. Remove the protective packaging from the water pump.
3. Place the main unit onto the tank. No need to secure the water pump to the bottom of the tank.
4. Place on a flat surface 12+ inches from walls. Use a waterproof mat underneath to catch spills.
5. Remove the top cover and water inlet tank.
6. Remove the heating element cover.
7. Place a mineral absorption pad into the heating element slot.
8. Reattach the heating element cover, water inlet tank, and top cover.

The mineral absorption pads help reduce mineral buildup (scale) inside the humidifier, especially on the heating element. The absorption pads shall be cleaned and replaced regularly.

Extension Tube

To increase mist height or extend mist range, install the included extension mist tube:

1. Remove the mist nozzle.
2. Assemble the extension mist tube.
3. Place the extension mist tube onto the mist outlet.

The extension tube should simply be placed on the mist outlet, allowing for easy adjustment of the mist direction. If water droplets collect on the edge of the extension tube, it indicates high humidity; lower the humidity setting or adjust the mist level.

Filling Water

There are two ways to add water:

1. Top Fill

Do not add water through the mist nozzle.

2. Bottom Fill

Do not fill past the MAX line.

Note: Use purified or distilled water to minimize white dust accumulation. Place a waterproof mat beneath the humidifier to contain spills. Fill with room-temperature water only; never use hot water, boiling water, or other liquids. Avoid pouring water through the mist outlet to prevent internal damage and operational failure. Never add essential oils directly to the water tank as this may damage the tank components.

White Dust (Mineral Residue)

What Is White Dust?

White dust, also called mineral residue, is a powdery buildup that can appear near your humidifier. It's caused by minerals (like calcium and magnesium) in your water—a common issue in areas with "hard water." The harder your water, the more likely you'll see this dust.

Why Does It Happen?

• The humidifier doesn't create this dust; it simply releases minerals that are already in your water.
• If you live in a hard water area, switching to distilled water can greatly reduce or even eliminate white dust.
• It's a natural process, not a problem with your humidifier.

How To Reduce It?

The demineralization cartridge can minimize white dust buildup.

• Replace the cartridge every 30-40 water refills.
• Replace more often if you have very hard water.
• Switch to distilled water if dust persists after replacement.
• To purchase replacement cartridges, contact customer support.

Still Experiencing Issues? Contact customer support.

Adding Essential Oil

1. Locate & Remove: Press and slide out the aroma pad tray.
2. Insert Pad: Place an aroma pad inside the tray.
3. Add Oil: Add 2-5 drops of essential oil directly onto the pad.
4. Reinsert: Slide the aroma pad tray back into place securely.
5. Activate: Turn on the humidifier to release scented mist.

Only use the aroma pad. Never add oils directly to the tray, water tank, or other components.

Note: If the aroma pad remains stiff after cleaning, it needs to be replaced. Use a same-sized sponge or folded paper towel as a substitute if no pad is available. This humidifier is not a dedicated diffuser; fragrance will be subtle.

Cleaning & Maintenance

Before You Begin

• Always unplug the unit before maintenance.
• Work on a waterproof surface.

Cleaning Do's

• Wipe surfaces with a damp cloth.
• Clean the mist nozzle regularly with a soft tissue.
• Change water regularly to prevent bacteria.
• For storage: Empty all water and dry completely.

Cleaning Don'ts

• Never submerge or rinse the main unit.
• Keep water away from the air outlet.
• Avoid using detergents, gasoline, thinners, solvents, or other chemicals for cleaning.

Mold Buildup

Mold spores naturally exist in air and water. When water sits in tanks for >48 hours, spores multiply rapidly.

Regular cleaning is one of the most important steps you can take. According to the Environmental Protection Agency (EPA), homeowners should clean their humidifiers at least every 3 days to prevent mold buildup.

• Use distilled or demineralized water (reduces mineral deposits that mold thrives on).
• Dry the tank completely between uses.
• Deep clean weekly with white vinegar.

1. Regular Cleaning

1. Remove the humidifier main unit from the water tank and empty any remaining water.
2. Clean the water inlet tank and water tank using a soft cloth or brush.
3. Gently clean the water chamber interior with a soft brush, ensuring no water enters the air outlet.
4. Clean the water pump with a soft brush and use a long, narrow brush to clean the silicone tube.

Note: Ensure all parts are fully dry before reassembling or storing the humidifier.

2. Descaling Instructions

1. Pour white vinegar into the water chamber and water tank.
2. Soak the water inlet tank, water pump, and silicone tube in white vinegar.
3. Let the solution sit for 20-30 minutes.
4. Scrub away scale buildup with a soft cloth or brush.
5. Rinse thoroughly with clean water.

Caution: Do not allow water to enter the air outlet during cleaning. Avoid harsh scrubbing of the ultrasonic disk to prevent damage. White vinegar may leave a slight odor; ensure proper ventilation and let all parts air-dry completely before reuse. Citric acid can be used as an alternative descaler; follow the product instructions for proper usage.

3. Aroma Pad Tray Cleaning

1. Push and pull out the aroma pad tray from the back of the humidifier.
2. Rinse the tray and pad with water and dry it before placing it back.

If the aroma pad remains stiff after cleaning, it needs to be replaced. Use a same-sized sponge or folded paper towel as a substitute.

4. Pump Check And Replacement

If the water pump stops working, first try removing and reinstalling it.

1. Disconnect: Turn the locking nut counterclockwise, hold the cable near the connector, and firmly pull to separate the plug (pin end) from the socket (jack).
2. Reconnect: Align the plug and socket, push in until secure, then tighten the locking nut clockwise.

If the pump is damaged, contact customer support to purchase a replacement. Still experiencing issues? Contact customer support.

5. Seasonal Storage

• Before storing the humidifier at the end of the season, follow the above cleaning steps.
• Ensure all parts are completely dry before storing.
• Pack the unit securely and store it in a cool, dry place.

Troubleshooting

No Power / Unable To Turn On

• Check Power Supply: Make sure the humidifier is plugged into a working electrical outlet.
• If Recently Cleaned: Water may have entered the unit during cleaning, preventing startup. Place in a well-ventilated area to dry for at least 24 hours before retrying.
• Still Getting Weak Mist?: Contact customer support.

Low Mist Output

• Check Water Level: Make sure the tank is filled with enough water.
• Adjust Mist Settings: Turn up the mist level if set too low.
• Check Humidity Setting: In Auto Mode, misting stops when target humidity is reached; increase mist level or raise target humidity setting.
• Clean Ultrasonic Disk: If clogged, follow cleaning steps in "Descaling Instructions" (Page 19).
• Still Getting Weak Mist?: Contact customer support.

Mist Escaping From The Water Tank

• Check Tank Installation: Ensure the tank is properly placed.
• Adjust Mist Level: Reduce the mist output to prevent excessive mist buildup.

No Mist Output With Red Light Flashing

• Water Level: Ensure water tank is adequately filled.
• Sensor Reset: After long storage/transit, sensor may falsely show "⚠️". Restart unit 2-3 times to recalibrate.
• If Issue Persists:
  • Inspect Water Pump: If failing to move water from tank to water chamber, follow "Descaling Instructions" & "Pump Check And Replacement" (Page 19-20) procedures.
  • Check Main Unit Float: Clean with cotton swab if stuck to verify float moves freely up/down.
  • Examine Ultrasonic Disk: Clean per "Descaling Instructions" (Page 19) if clogged. Pour water into water chamber while powered on - check for mist production.
• Still Not Working?: Contact customer support for pump or main unit replacement options.

Insufficient Humidification

• Adjust Mist Level: Increase the mist output.
• Check Room Size: If the room is too large, the humidifier may not effectively increase humidity. Consider using a larger unit.
• Check Environmental Humidity: If the air is very dry, it may take longer for humidity levels to rise.

Inaccurate Humidity Reading

• Normal Range: A difference of 5-10% between displayed and actual humidity is normal.
• Check The Humidity Sensor: Ensure the sensor is free from dust or moisture; wipe it dry if necessary.
• Check Placement: Avoid placing the humidifier in corners or near walls. Ensure good airflow.
• For Large Errors: If the humidity reading is significantly inaccurate, contact customer support.

Water Leakage

• Inspect Water Tank: Check for cracks/damage. Never fill water past the MAX line.
• Verify Placement: Place on perfectly flat, level surface.

Water Accumulation Around Unit

• Check Humidity Settings: If set too high, excess moisture may form. Use extension tube / Reduce mist level. For smallest settings: Move to larger space or use waterproof mat.
• Verify Placement: Place on flat, stable surface. Keep minimum 12 inches from walls/furniture for proper airflow.
• Inspect Water Tank: Ensure proper installation to prevent leaks. Never fill past MAX water line.

Scale buildup / Unpleasant Odor

• Clean Regularly: Clean the water tank and main unit frequently to remove scale buildup.
• Use White Vinegar: Soak parts with mineral deposits in distilled white vinegar for 20-30 minutes, then rinse thoroughly.
• Check The Aroma Pad: If using essential oils, clean or replace the aroma pad regularly. See the "Aroma Pad Tray Cleaning" (Page 19) section for details.

White Mist Or White Dust

• Check Water Quality: Use purified or distilled water instead of tap water with high mineral content.
• Clean The Humidifier: Regularly clean the water tank and base to remove mineral deposits. See the "White Dust" (Page 15) section for details.

Furnace Malfunctions

Tap Water Minerals Dispersed As "White Dust" Can:

• Clog furnace air filters faster.
• Coat sensitive sensors/electronics.

How To Prevent It:

• Only use distilled/demineralized water.
• Replace furnace filter monthly during humidifier use.
• Wipe down furnace exterior weekly.

Noisy Sound

• A slight noise during water intake is normal.
• If the noise is excessive, Contact customer support.

Warranty Policy

Warranty Coverage

Lacidoll warrants to the original purchaser that this product shall be free from defects in material and workmanship under normal use and conditions for a period of 1 year from the date of purchase. During the warranty period, Lacidoll will, at its sole discretion, repair or replace the product if such defects occur.

Warranty Exclusions

This warranty does not cover:

• Unauthorized repairs/modifications: Any repair, modification, or disassembly not authorized by the manufacturer voids the warranty.
• Misuse or abuse: Damage caused by accidents, misuse, improper maintenance, or failure to follow instructions in the user manual.
• Commercial use: Products used for commercial, rental, or non-household purposes.
• Normal wear & tear: Deterioration due to regular use or consumable parts (e.g., filters, bulbs).
• External factors: Damage from natural disasters, shipping, power surges, or other external causes.
• Unauthorized sellers: Products purchased from unauthorized dealers or distributors.

Warranty Claim Process

If your product exhibits a defect during the warranty period:

• Contact Customer Support: Provide the product model, proof of purchase (invoice/order number), and photos/videos of the issue.
• Repair or Replacement: Lacidoll will evaluate the claim and provide a repair or replacement if eligible.

Product Registration

To streamline warranty services, register your product promptly on the official website.

Customer Support

For warranty claims or inquiries:

• Phone: +1 888-405-0087
• Email: support@lacidoll.com
• Hours: Mon-Fri, 9 AM–5 PM (EST)

Important Notes

• Voiding conditions: Unauthorized repairs, use of chemicals/oils, or improper cleaning void the warranty.
• Safety alert: Discontinue use and contact support if the product exhibits abnormal noise, odors, or malfunction.
• Your Rights: This warranty provides specific legal protections. Additional rights may apply under your state's consumer laws.