Honeywell TrueDRY DR90 Dehumidifier Manual

The Honeywell TrueDRY DR90 is a high-capacity dehumidifier designed for residential and light commercial use. It features a 90-pint per day removal capacity (at AHAM conditions), digital humidistat control with auto-defrost, continuous drain option, washable air filter, full tank alert with auto-shutoff, casters for mobility, and energy-efficient operation. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation & Placement 3. First-Time Setup 4. Specifications 5. Controls and Operation 6. Drainage Options 7. Maintenance & Cleaning 8. Energy Saving Tips 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Digital control panel, 90-pint water tank with handle and indicator, washable air filter, continuous drain hose connection, casters, and auto-defrost function.

Feature	Description
Removal Capacity	90 pints per day (at 80°F, 60% RH)
Digital Humidistat	Set desired humidity level (35% - 85%)
Auto-Defrost	Prevents coil freezing in low temperatures
Continuous Drain	Option for hose connection (hose not included)
Full Tank Alert	Indicator light and auto-shutoff when tank is full
Washable Air Filter	Captures dust and particles; reusable
Casters	Four wheels for easy room-to-room mobility
Energy Efficient	ENERGY STAR® qualified model
Control Lock	Prevents accidental setting changes
24-Hour Timer	Program on/off cycles

Installation & Placement

Unpack and inspect contents. Place on a level, stable floor surface.

Choose location: Place in center of room or area with high humidity, away from walls and furniture for proper airflow.
Clearance: Ensure at least 12-18 inches of clearance on all sides, especially air intake and exhaust.
Check filter: Ensure washable air filter is properly installed.
Power connection: Plug into a dedicated 115V AC, 60Hz grounded outlet. Do not use extension cords.

WARNING! Do not place in temperatures below 41°F (5°C) or above 95°F (35°C). Ensure the unit is upright for at least 24 hours before first use if transported on its side.

First-Time Setup

Power on the dehumidifier; follow control panel prompts.

Set humidity level: Press HUMIDITY button to set desired level (recommended 45-50% for comfort).
Select fan speed: Choose between HIGH (faster dehumidification) or LOW (quieter operation).
Set timer (optional): Use TIMER button to program automatic start/stop times.
Check drain options: Decide to use water tank or connect continuous drain hose.

CAUTION! Handle the water tank with care; empty before moving the unit.

Specifications

Model: Honeywell TrueDRY DR90.
Dehumidification Capacity: 90 pints/day (AHAM).
Coverage Area: Up to 4,500 sq ft (in moist conditions).
Operating Conditions: 41°F to 95°F (5°C to 35°C).
Tank Capacity: 16.9 pints (2 gallons).
Power Supply: 115V AC, 60Hz, 7.5A.
Noise Level: ≤ 52 dB on LOW fan speed.
Dimensions (HxWxD): 24.2" x 15.4" x 11.8".
Weight: 46.3 lbs.
Refrigerant: R410A (environmentally friendly).

Controls and Operation

Access all functions via the digital control panel on top of the unit.

Control Panel: POWER button, HUMIDITY +/- buttons, FAN SPEED (HIGH/LOW), TIMER, FILTER RESET indicator, FULL TANK indicator, CONTROL LOCK.

Operation Modes: Normal (set humidity), Continuous (runs until tank is full or turned off). Settings: Humidity level (35%-85%), Fan speed (High/Low), Timer (1-24 hours), Auto-restart (resumes previous settings after power outage). Indicators: Power On, Full Tank, Filter Clean, Defrost (flashes during auto-defrost cycle).

Drainage Options

Two methods: Manual (water tank) or Continuous (drain hose).

Manual (Tank): Unit stops when tank is full (indicator lights). Pull tank out, empty, and reinsert firmly.
Continuous: Attach a standard garden hose (¾” inner diameter, not included) to the drain port at the back. Ensure hose runs downward to floor drain or sink.

Tip: For continuous drainage, place unit on a stable surface higher than the drain point. Ensure hose is free of kinks.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and longevity.

Clean air filter: Every 2-4 weeks, remove filter, wash with warm water and mild detergent, let dry completely before reinstalling. Press FILTER RESET button.
Clean water tank: Monthly, empty and clean tank with mild detergent to prevent mold/mildew. Rinse thoroughly.
Clean exterior: Unplug unit, wipe with a soft, damp cloth. Do not use abrasive cleaners.
End-of-season storage: Empty tank, clean filter and tank, let unit dry completely. Coil hose (if used). Store upright in a dry place.

WARNING! Always unplug the unit before any maintenance. Do not immerse in water.

Energy Saving Tips

Set humidity to 50% or higher when away. Use in enclosed spaces with doors/windows closed. Ensure filter is clean for efficient airflow. Use continuous drain in high-humidity areas to avoid frequent tank emptying.

Regulatory Information

This product complies with FCC Part 15 Subpart B. It may not cause harmful interference and must accept any interference received. Copyright © Honeywell International Inc. For support, visit www.honeywellhome.com or contact 1-800-474-2147. ENERGY STAR® is a registered trademark of the U.S. Environmental Protection Agency.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit does not start	Power issue / Full tank	Ensure plugged in; outlet has power; empty water tank and reinsert properly.
Reduced moisture removal	Dirty filter / Low temp	Clean air filter; ensure room temp is above 41°F (5°C).
Water leaking	Tank not seated / Hose leak	Ensure tank is pushed in fully; check hose connections for continuous drain.
Loud or unusual noise	Loose parts / Fan obstruction	Ensure unit is on level surface; check for objects near fan intake/exhaust.
Frost on coils	Low temperature operation	Auto-defrost should activate; move to warmer area if below 41°F.
Control panel unresponsive	Control lock enabled	Press and hold CONTROL LOCK button for 3 seconds to disable.

Reset: Unplug for 60 seconds, then plug back in to reset electronic controls.

Service: 1-800-474-2147; www.honeywellhome.com. Do not attempt to repair refrigerant system.