Honeywell Humidifier HWM-4040-5 Manual

The Honeywell HWM-4040-5 is a 4-gallon cool mist humidifier designed for medium to large rooms up to 1200 sq. ft. It features a wicking filter system, adjustable humidity control, a refill indicator light, a 24-hour programmable timer, a quiet operation mode, an auto-shutoff function when empty, and an easy-to-clean tank. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 4-gallon water tank, wicking filter, control panel with digital display, humidity sensor, refill indicator, and adjustable mist output.

Installation & Setup

Unpack and inspect all contents. Place on a flat, stable, waterproof surface away from electronics.

1. Remove all packaging materials from the humidifier and tank.
2. Install the wicking filter: Remove from package, soak in cool water for 15 minutes, then insert into filter frame.
3. Fill the water tank: Carry to sink, remove cap, fill with cool tap water, replace cap securely.
4. Place tank on base: Align tank with base unit and set in place.
5. Plug into a 120V AC outlet.

WARNING! Always use clean, cool tap water. Do not use hot water or additives. Ensure unit is on a level surface to prevent leakage.

First-Time Use

Power on the humidifier; the digital display will illuminate.

1. Set desired humidity: Press the HUMIDITY button to select target level (40%-60% recommended).
2. Adjust mist output: Use the MIST knob or button to set output from Low (1) to High (3).
3. Set the timer (optional): Press TIMER to program automatic shut-off.
4. Enable Quiet Mode: Press QUIET for reduced noise during sleep.
5. Allow 15-20 minutes for the unit to begin producing visible mist.

CAUTION! Do not block mist outlet or air intakes. Keep unit at least 12 inches from walls and furniture.

Specifications

• Model: HWM-4040-5
• Tank Capacity: 4 gallons (15.1 L)
• Coverage Area: Up to 1200 sq. ft.
• Run Time: Up to 24 hours on low setting
• Humidity Control: Adjustable, 30% - 80% RH
• Mist Output: Adjustable, up to 0.5 gallons per day
• Noise Level: ≤ 35 dB in Quiet Mode
• Power Consumption: 30W max
• Power Source: 120V AC, 60Hz
• Dimensions (HxWxD): 18.5" x 13.2" x 10.6"
• Weight (empty): 8.8 lbs

Controls and Settings

Control Panel: POWER button, HUMIDITY +/- buttons, MIST LEVEL control, TIMER button, QUIET MODE button, FILTER RESET indicator.

Display Icons: Current humidity, Target humidity, Timer set, Quiet mode, Refill alert, Filter replacement alert.

Humidity Setting: Press HUMIDITY to set target (30%-80%). Mist Control: Turn knob or press buttons for Low/Med/High output. Timer: Program 1-24 hours for auto shut-off. Quiet Mode: Reduces fan speed. Filter Reset: Hold button for 3 seconds after replacing filter to reset indicator.

Operation Modes

Normal Mode: Default operation with adjustable mist. Quiet Mode: For nighttime; lower fan speed. Auto Mode: Uses humidity sensor to maintain set level. Timer Mode: Runs for set duration then shuts off.

1. Press POWER to turn on.
2. Select mode using MODE button (if equipped).
3. Adjust settings as desired.
4. Unit will auto-shutoff when tank is empty; refill indicator light will illuminate.

Tip: For best results, keep doors and windows closed in the room being humidified.

Maintenance & Cleaning

Regular cleaning prevents mold and mineral buildup.

1. Unplug the unit and remove the water tank.
2. Empty any remaining water from the tank and base.
3. Clean tank with mild dish soap and warm water; rinse thoroughly.
4. Wipe base interior with a soft cloth dampened with a 50/50 white vinegar and water solution to descale.
5. Rinse all parts with clean water and air dry completely before reassembly.
6. Clean the exterior with a dry, soft cloth.

Frequency: Clean every 1-2 weeks during use, or more often in hard water areas.

WARNING! Never immerse base unit in water. Do not use abrasive cleaners or bleach.

Filter Replacement

The wicking filter should be replaced every 1-3 months, depending on water hardness and usage.

1. Turn off and unplug the humidifier.
2. Remove the water tank and old filter from the base.
3. Soak the new filter (Model HF-4040) in cool water for 15 minutes.
4. Insert the damp filter into the filter frame in the base.
5. Press and hold the FILTER RESET button for 3 seconds to reset the indicator light.
6. Reassemble and refill the tank.

Note: Using the humidifier without a filter or with a clogged filter can reduce performance and disperse minerals into the air.

Safety Information

Read all instructions before use.

• Use only 120V AC outlet.
• Do not operate with a damaged cord or plug.
• Always place on a dry, level surface.
• Do not cover mist outlet or air intakes.
• Empty and clean before storing or when not in use for extended periods.
• Keep out of reach of children and pets.
• Do not add essential oils, medications, or fragrances to the water tank.
• This appliance is not intended for use by persons with reduced physical, sensory, or mental capabilities.

Regulatory Information

FCC Compliance: This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Copyright © Honeywell International Inc. Honeywell and the Honeywell logo are registered trademarks of Honeywell International Inc. For support, visit www.honeywellhumidifiers.com or contact 1-800-332-1110.

Troubleshooting

Reset: Unplug unit for 5 minutes to reset electronic controls.

Service: For repairs, contact authorized service center. Do not attempt to disassemble the unit.

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