Honeywell Humidifier HCM-300T Series Manual

The Honeywell HCM-300T Series is a cool mist humidifier designed to add moisture to dry air, helping to relieve dry air discomforts. It features a 1-gallon tank capacity, adjustable humidity control, a wicking filter to trap minerals, an easy-to-clean design, an automatic shut-off when empty, a refill indicator light, and quiet operation. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Water Tank, Base Unit with Motor, Wicking Filter, Humidity Control Dial, Refill Indicator Light, Power Cord.

Installation & Setup

Unpack and inspect contents. Place on a flat, stable, level surface away from walls and electronics.

1. Remove the water tank from the base.
2. Install the wicking filter: Remove from packaging, soak in cool water for 15 minutes, then insert into filter frame in base.
3. Fill the tank: Turn tank upside down, remove cap, fill with cool, clean water (do not use hot water or additives). Replace cap securely.
4. Place tank on base: Align tank with base and set down firmly.
5. Plug into a 120V AC outlet.

WARNING! Use only clean, cool water. Do not operate without filter. Ensure unit is on a level surface to prevent leakage.

First-Time Use

After installation, follow these steps to begin operation.

1. Ensure the unit is plugged in and the tank is filled.
2. Turn the Humidity Control Dial to the desired setting (Low for quiet operation, Med for average rooms, High for maximum moisture output).
3. The unit will begin producing a cool mist. Allow several hours to notice an increase in room humidity.
4. The Refill Indicator Light will illuminate when the tank is empty.

CAUTION! Never move the unit while it is operating or contains water. Always turn off and unplug before servicing.

Specifications

• Model Series: HCM-300T
• Tank Capacity: 1 Gallon (3.8 Liters)
• Coverage Area: Up to 300 square feet
• Run Time: Up to 24 hours on Low setting
• Humidity Control: Adjustable dial (Low, Medium, High)
• Filter Type: Replaceable wicking filter (Model HWF-300)
• Power: 120V AC, 60Hz
• Automatic Shut-Off: Yes (when empty)
• Indicator Light: Refill indicator (Blue)
• Weight (Empty): 5.2 lbs (2.36 kg)

Controls and Operation

Primary control is the Humidity Control Dial on the front of the base unit.

Dial Positions:
OFF: Unit is powered off.
LOW (I): Minimal mist output, quietest operation, longest run time.
MEDIUM (II): Moderate mist output for average room conditions.
HIGH (III): Maximum mist output for quickly adding moisture to dry air.

Refill Indicator Light: A blue light on the front will turn on when the water tank is empty, signaling it is time to refill. The unit will automatically shut off.

To resume operation after refill: Fill tank, replace on base. The light will turn off and you may turn the dial to your desired setting.

Maintenance & Filter Care

Regular maintenance ensures optimal performance and air quality.

1. Filter Replacement: The wicking filter should be replaced every 1-2 months, or more often if water is hard or unit is used frequently. Use only Honeywell HWF-300 replacement filters.
2. To Replace Filter: Unplug unit. Remove tank. Lift out old filter from base. Soak new filter in cool water for 15 min, insert into frame. Reassemble.
3. Daily: Refill tank with clean, cool water as needed.
4. Weekly Check: Inspect filter for mineral buildup or discoloration.

Tip: Using distilled or demineralized water can extend filter life and reduce white dust.

Cleaning Instructions

Clean every 1-2 weeks to prevent mold or bacteria growth.

1. Unplug the unit from the electrical outlet.
2. Remove the water tank and pour out any remaining water.
3. Remove the wicking filter (replace if it's time).
4. Clean the tank and base with a mixture of mild dish soap and warm water. Use a soft cloth or brush. Do not submerge the base motor assembly.
5. Rinse all parts thoroughly with clean water.
6. Wipe all surfaces dry with a soft cloth.
7. Allow all parts to air dry completely before reassembling and using.

CAUTION! Never use bleach, harsh chemicals, or abrasive cleaners. Do not allow water to enter the motor housing in the base.

Safety Features

Automatic Shut-Off: The unit will automatically power off when the water tank is empty, protecting the motor.

Tip-Over Protection: Ensure the unit is placed on a level surface. If tipped over significantly, it may stop misting.

Refill Indicator: Prevents dry running by alerting you to refill.

Regulatory Information

This humidifier complies with relevant U.S. safety standards. Copyright and trademarks are property of Honeywell International Inc. For genuine parts and filters, visit the Honeywell website. This product is for indoor residential use only.

For support, product registration, or to purchase filters, visit www.honeywellhumidifiers.com or contact customer service at 1-800-332-1110.

Troubleshooting

Reset: Unplug unit, empty water, clean thoroughly, let dry, then restart.

Service: For issues not resolved above, contact Honeywell Customer Service at 1-800-332-1110 or visit www.honeywellhumidifiers.com. Do not attempt to repair the motor yourself.