Honeywell Humidifier HE240 Manual

The Honeywell Humidifier HE240 is a cool mist humidifier designed to add moisture to dry air, providing relief from dry skin, nasal congestion, and static electricity. It features a 1-gallon tank capacity, adjustable humidity control, a wicking filter system, quiet operation, an auto-shutoff function when empty, and an easy-to-clean design. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation & Setup 3. First-Time Use 4. Specifications 5. Controls and Operation 6. Maintenance & Cleaning 7. Filter Replacement 8. Safety Features 9. Care & Storage 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Water tank, base unit with motor, wicking filter, humidity control dial, mist outlet, power cord, and indicator light.

Feature	Description
1-Gallon Tank Capacity	Provides up to 24 hours of operation on low setting
Adjustable Humidity Control	Dial to set desired mist output level
Wicking Filter System	Traps minerals and impurities from water
Quiet Operation	Designed for bedroom or office use
Auto Shut-Off	Turns off when water tank is empty
Easy-Fill Tank	Wide opening for convenient refilling
Mist Outlet	Adjustable direction for mist flow
Indicator Light	Shows when unit is powered on
Carry Handle	For easy transport of tank
Easy-Clean Design	Removable parts for simple maintenance

Installation & Setup

Unpack and inspect all parts. Place on a flat, stable surface away from walls and electronics.

Remove all packaging materials from tank and base.
Install the wicking filter: Remove filter from package and insert into filter slot in base.
Fill the tank: Remove tank from base, open cap, fill with cool tap water to MAX line.
Reassemble: Place tank securely back onto base unit.
Plug into standard 120V AC outlet.

WARNING! Do not use with extension cords. Ensure unit is on a level, waterproof surface.

First-Time Use

Power on humidifier; adjust settings as needed.

Turn humidity control dial to desired setting (Low, Medium, High).
Adjust mist outlet direction towards center of room.
Allow a few minutes for filter to saturate and mist to begin.
Monitor humidity levels; adjust dial as needed for comfort.

CAUTION! Use only clean, cool tap water. Do not add oils, chemicals, or medications to water tank.

Specifications

Tank Capacity: 1 gallon (3.8 liters).
Coverage Area: Up to 250 square feet.
Run Time: Up to 24 hours on low setting.
Mist Output: Adjustable via control dial.
Filter Type: Replaceable wicking filter (HE240F).
Power Source: 120V AC, 60Hz.
Power Consumption: 25W maximum.
Noise Level: Less than 35 dB on low setting.
Dimensions: 11.5" H x 10.5" W x 8.5" D.
Weight: 3.5 lbs (empty).

Controls and Operation

Control dial located on front of base unit. Indicator light shows power status.

Operation Steps:

Turn dial clockwise to increase mist output (Low → Medium → High).
Turn dial counter-clockwise to decrease output or turn off.
Adjust mist outlet to direct moisture away from walls and furniture.
Auto shut-off activates when tank is empty (light may blink).

Tips: For best performance, place unit at least 12 inches from walls. Use in rooms with doors closed for faster humidity increase.

Maintenance & Cleaning

Regular cleaning prevents mold and mineral buildup. Clean every 1-2 weeks during use.

Unplug unit and remove water tank.
Empty any remaining water from tank and base.
Clean tank with mild soap and warm water; rinse thoroughly.
Wipe base interior with damp cloth; do not submerge in water.
Clean mist outlet with cotton swab if clogged.
Allow all parts to air dry completely before reassembly.

CAUTION! Never use abrasive cleaners, bleach, or harsh chemicals. Do not immerse base in water.

Filter Replacement

Replace wicking filter every 1-2 months or when discolored/mineralized.

Unplug unit and remove water tank.
Remove old filter from base slot.
Insert new HE240F filter (ensure proper orientation).
Reassemble tank and base.
Soak new filter for 15 minutes before first use for optimal performance.

Note: Using the humidifier without a filter or with a damaged filter may cause white dust and reduce efficiency.

Safety Features

Auto Shut-Off: Activates when tank is empty to prevent motor damage. Tip-Over Protection: Unit stops if knocked over. Overheat Protection: Thermal fuse prevents overheating.

Care & Storage

When not in use for extended periods:

Unplug and empty all water from tank and base.
Clean thoroughly as per maintenance instructions.
Remove and discard old filter.
Allow all parts to dry completely.
Store in original box in a cool, dry place.

CAUTION! Never store with water in tank. This prevents mold and bacterial growth.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. UL Listed: Meets safety standards. Copyright © Honeywell International Inc. For support, visit www.honeywellhumidifiers.com or contact 1-800-332-1110.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No mist output	Empty tank/Clogged filter	Refill tank; replace filter; check for mineral buildup.
White dust in room	Old filter/Hard water	Replace filter; use distilled water; clean unit.
Unit not turning on	No power/Empty tank	Check outlet; ensure tank is properly seated; refill if empty.
Water leakage	Loose tank/Overfilled	Ensure tank is securely placed; do not fill above MAX line.
Unusual noise	Mineral buildup/Motor issue	Clean unit thoroughly; ensure unit is on level surface.
Bad odor	Dirty tank/Stale water	Clean tank and base; use fresh water daily; replace filter.

Reset: Unplug for 10 minutes, then restart.

Service: 1-800-332-1110; www.honeywellhumidifiers.com