Honeywell HDH-166 Dehumidifier Manual

The Honeywell HDH-166 is a high-capacity 16-pint dehumidifier designed for medium-sized rooms up to 300 sq. ft. It features adjustable humidity control, continuous drain option, auto-defrost for low-temperature operation, washable air filter, full tank alert with auto-shutoff, and energy-efficient operation. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Dehumidifier unit, Water collection tank, Washable air filter, Power cord, Drain hose adapter, User manual.

Installation & Placement

Unpack and inspect contents. Choose appropriate location.

1. Place on level surface: Ensure unit is stable on floor.
2. Clearance requirements: Maintain 12-18 inches clearance on all sides for proper airflow.
3. Avoid obstructions: Keep away from curtains, furniture, and walls.
4. Room selection: Use in enclosed spaces up to 300 sq. ft. (basements, bathrooms, bedrooms).
5. Temperature range: Operate between 41°F (5°C) and 95°F (35°C).

WARNING! Do not place near heat sources or in direct sunlight. Ensure proper ventilation.

First-Time Setup

Prepare unit for initial operation.

1. Install filter: Ensure washable filter is properly seated.
2. Check tank: Ensure water collection tank is empty and properly inserted.
3. Power connection: Plug into grounded 120V AC outlet.
4. Set humidity: Use control panel to set desired humidity level (45-50% recommended).
5. Select mode: Choose between Continuous or Auto mode.

CAUTION! Handle with care when moving; unit contains refrigerant.

Specifications

• Model: HDH-166
• Capacity: 16 pints per day (at 60°F, 60% RH)
• Coverage Area: Up to 300 square feet
• Tank Capacity: 1.2 gallons (removable)
• Power: 115V, 60Hz, 1.5A
• Operating Temperature: 41°F to 95°F (5°C to 35°C)
• Noise Level: ≤ 50 dB
• Dimensions: 14.2" W × 9.8" D × 19.7" H
• Weight: 24.3 lbs
• Refrigerant: R410a

Controls and Settings

Control Panel Features: Power button, Humidity setting buttons, Mode selector, Timer button, Filter reset indicator.

Display: Current room humidity, Set humidity level, Timer settings, Filter alert, Full tank indicator.

Humidity Control: Adjust between 30% and 80% RH in 5% increments. Modes: CONTINUOUS (runs constantly), AUTO (cycles based on set humidity). Timer: Program 1-24 hours for automatic start/stop. Filter Alert: LED indicates when filter needs cleaning (approximately every 250 hours).

Operation Modes

Auto Mode: Unit runs until set humidity is reached, then cycles on/off to maintain level. Continuous Mode: Runs constantly regardless of humidity level (use for very damp conditions).

1. Press POWER to turn unit on.
2. Use HUMIDITY buttons to set desired level.
3. Press MODE to select Auto or Continuous operation.
4. For timer: Press TIMER, use arrows to set hours, press SET.
5. Monitor display for current room humidity.

Tip: For optimal efficiency, keep doors and windows closed during operation.

Maintenance & Cleaning

Regular maintenance ensures optimal performance.

1. Daily: Check and empty water tank when full indicator lights.
2. Weekly: Clean air filter under running water, allow to dry completely before reinstalling.
3. Monthly: Wipe exterior with soft, damp cloth; clean tank with mild detergent.
4. Seasonal: For storage, empty tank completely, clean unit, and store upright in dry location.
5. Annual: Check grille and coils for dust accumulation; clean with soft brush.

WARNING! Always unplug unit before cleaning. Never use harsh chemicals or abrasives.

Draining Options

Manual Draining: Empty removable tank when full indicator lights. Continuous Draining: Connect 5/8" ID hose to drain port (hose not included).

1. For manual: Pull tank straight out, empty, replace securely.
2. For continuous: Place unit near floor drain or sink. Remove drain cap, attach hose, route to drain.
3. Ensure hose has downward slope without kinks.
4. Unit will operate continuously without shutting off for tank full.

CAUTION! Do not lift unit by water tank. Ensure hose connection is secure to prevent leaks.

Safety Features

Auto Shutoff: Stops operation when tank is full. Tip-Over Protection: Automatically shuts off if unit is knocked over. Auto Defrost: Prevents ice buildup on coils in low temperatures. Overload Protection: Circuit breaker protects motor from electrical surges.

Regulatory Information

UL Listed: Meets UL standard 474. Energy Star: Certified for energy efficiency. FCC Part 15: Class B digital device compliance. California Proposition 65 Warning: Contains chemicals known to cause cancer and reproductive harm. For support, visit www.honeywellhome.com or contact 1-800-332-1110.

Troubleshooting

Reset: Unplug for 10 minutes to reset electronic controls.

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