Honeywell TrueDRY DH90 Dehumidifier Manual

The Honeywell TrueDRY DH90 is a high-capacity 90-pint dehumidifier designed for large spaces up to 4,500 sq. ft. It features automatic humidity control, continuous drain option, washable air filter, digital display with humidity readout, 24-hour timer, auto-restart after power outage, 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 Settings 6. Operation Modes 7. Maintenance & Cleaning 8. Drainage Options 9. Energy Saving Tips 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital control panel, 90-pint water tank, Continuous drain hose connection, Washable air filter, Casters for mobility, Humidity sensor.

Feature	Description
Digital Control Panel	LED display with humidity readout and touch controls
90-Pint Capacity	Removes up to 90 pints per day at 80°F/60% RH
Continuous Drain Option	Garden hose connection for automatic water removal
Washable Air Filter	Reusable filter for improved air quality
Automatic Humidity Control	Set desired humidity level (35%-85%)
24-Hour Timer	Program on/off times for energy savings
Auto-Restart	Resumes previous settings after power outage
Full Tank Alert	Indicator light and automatic shutoff
Casters	Four wheels for easy mobility
Energy Star Certified	Energy-efficient operation

Installation & Placement

Unpack and inspect contents. Place on level surface.

Choose location: Place in center of room away from walls/furniture (minimum 12-18 inches clearance).
Check level: Ensure unit is level for proper operation.
Install drain hose: For continuous drainage, attach garden hose to drain port.
Plug into grounded outlet: Use dedicated 115V/60Hz outlet.

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

First-Time Setup

Power on dehumidifier; follow initial setup procedure.

Set humidity level: Press HUMIDITY button to set desired level (recommended 45-50%).
Select fan speed: Choose LOW for quiet operation or HIGH for maximum moisture removal.
Set timer: Press TIMER to program automatic on/off schedule.
Check filter: Ensure washable filter is properly installed.

CAUTION! Allow unit to stand upright for 24 hours if transported horizontally.

Specifications

Model: Honeywell TrueDRY DH90
Capacity: 90 pints per day (at 80°F/60% RH)
Coverage Area: Up to 4,500 square feet
Operating Conditions: 41°F to 95°F
Humidity Control: 35% to 85% adjustable
Tank Capacity: 1.8 gallons
Power Requirements: 115V, 60Hz, 7.5A
Noise Level: 52 dB on low speed
Dimensions: 15.4" W × 11.4" D × 24.3" H
Weight: 46.3 lbs
Refrigerant: R410A

Controls and Settings

Control Panel: POWER, HUMIDITY (+/-), FAN SPEED (LOW/HIGH), TIMER, FILTER RESET.

Display Indicators: Current humidity, Set humidity, Timer status, Filter alert, Full tank, Defrost mode.

Humidity Control: Adjust between 35%-85% in 5% increments. Fan Speed: LOW for quiet operation, HIGH for maximum dehumidification. Timer: Program 1-24 hours for automatic on/off. Filter Reset: Press after cleaning filter. Continuous Mode: Runs continuously until tank is full or desired humidity reached.

Operation Modes

Automatic Mode: Maintains set humidity level automatically. Continuous Mode: Runs continuously for maximum moisture removal. Laundry Mode: Higher fan speed for drying laundry areas. Timer Mode: Scheduled operation for energy savings.

Press POWER to turn on unit.
Set desired humidity using +/- buttons.
Select fan speed for current needs.
Monitor display for current room humidity.

Tip: Close windows and doors for most efficient operation.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and longevity.

Clean air filter: Remove and wash every 2-4 weeks with warm water.
Empty water tank: When full tank indicator lights, turn off and empty tank.
Clean exterior: Wipe with damp cloth; never use harsh chemicals.
Check drain hose: Ensure continuous drain hose is clear of obstructions.
Off-season storage: Empty tank, clean filter, and store in dry location.

WARNING! Always unplug unit before cleaning or maintenance.

Drainage Options

Bucket Method: Use included 1.8-gallon tank (auto-shutoff when full). Continuous Drain: Attach garden hose (not included) to drain port.

Continuous Drain Setup:

Turn off and unplug unit.
Remove drain plug from back of unit.
Attach standard garden hose (¾").
Route hose to floor drain or sink.
Ensure downward slope for proper drainage.

Energy Saving Tips

Set humidity to 45-50% for optimal comfort and efficiency. Use timer to run during peak humidity hours only. Keep doors and windows closed while operating. Clean filter regularly for maximum airflow. Place unit in coolest part of room for best performance.

CAUTION! Do not operate below 41°F as frost may form on coils.

Regulatory Information

UL Listed: Meets UL 474 safety standards. Energy Star Certified: Meets EPA energy efficiency guidelines. FCC Part 15: Class B digital device. California Proposition 65 Warning: This product may contain chemicals known to cause cancer or reproductive harm. For support, visit www.honeywellhome.com or contact 1-800-332-1110.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit not starting	Power issue/full tank	Check power connection; empty water tank; reset GFCI outlet.
Low moisture removal	Dirty filter/cold room	Clean air filter; ensure room temperature above 41°F.
Water leaking	Improper hose connection	Check drain hose connection; ensure tank is properly seated.
Loud operation	Uneven surface/fan issue	Place on level surface; check for obstructions in fan area.
Display not working	Power surge	Unplug for 10 minutes, then restart; check circuit breaker.
Frost on coils	Low temperature	Turn off until room warms above 41°F; unit will auto-defrost.
Filter light on	Dirty filter	Clean filter and press FILTER RESET button.

Reset: Unplug for 10 minutes to reset control board.

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