Dometic ACC3100D Instructions Manual

The Dometic ACC3100D is a high-performance air conditioning unit designed for recreational vehicles (RVs), featuring advanced cooling technology, multiple fan speeds, quiet operation, and compatibility with various RV power systems. It includes a digital control panel, remote control capability, and built-in safety features such as automatic overload protection and low-voltage shutdown. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to Power 7. Operation Modes 8. Maintenance 9. Safety Features 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-efficiency compressor, digital control panel, remote control, air filter, condenser coil, evaporator coil, and drainage system.

Feature	Description
Digital Control Panel	For setting temperature, fan speed, and mode
Remote Control	Wireless operation from a distance
Multiple Fan Speeds	Low, Medium, High, and Auto settings
Quiet Operation	Reduced noise levels for comfortable use
Automatic Overload Protection	Prevents motor damage from electrical surges
Low-Voltage Shutdown	Protects unit during power fluctuations
Energy-Saving Mode	Optimizes power consumption
Washable Air Filter	Easy to clean for maintained airflow
Condensate Drain	Efficient removal of moisture
Compatibility	Works with 120V AC, 60Hz RV systems

Installation

Unpack and inspect contents. Ensure RV roof is prepared for mounting.

Position unit: Place on RV roof according to template provided.
Secure mounting: Use bolts and sealant to prevent leaks.
Connect wiring: Follow color-coded wires to RV electrical system.
Install control panel: Mount inside RV and connect to unit.
Test operation: Power on and check for proper cooling.

WARNING! Installation should be performed by a qualified technician. Ensure power is disconnected during installation.

First-Time Setup

Power on unit; configure initial settings.

Set temperature: Use control panel or remote to desired cooling level.
Select fan speed: Choose Low, Medium, High, or Auto based on preference.
Enable energy-saving mode: Press ECO button to reduce power usage.
Test remote control: Point at IR sensor on control panel.
Check airflow: Ensure vents are unobstructed.

CAUTION! Do not operate without proper ventilation. Keep air intake and exhaust clear.

Specifications

Cooling Capacity: 13,500 BTU/hr.
Power Supply: 120V AC, 60Hz, 15A.
Airflow: Adjustable up to 350 CFM.
Noise Level: ≤ 55 dB on Low setting.
Dimensions: 28" x 28" x 12" (roof unit).
Weight: 75 lbs.
Refrigerant: R-410A.
Operating Temperature: 60°F to 110°F ambient.
Control: Digital panel with remote.
Filter Type: Washable mesh.

Controls and Settings

Access settings via control panel or remote. Control Panel: POWER, MODE, FAN SPEED, TEMP UP/DOWN, TIMER, ECO.

Remote: POWER, MODE, FAN, TEMP, TIMER, SLEEP, ECO.

Modes: COOL, FAN ONLY, DEHUMIDIFY. Fan Speeds: Low, Medium, High, Auto. Temperature Range: 60°F to 86°F. Timer: Set automatic on/off up to 24 hours. Sleep Mode: Gradually adjusts temperature overnight. ECO Mode: Optimizes energy use.

Connecting to Power

Connect to RV electrical system via dedicated circuit.

Turn off RV main power before connecting.
Use provided wiring harness; match colors (black to hot, white to neutral, green to ground).
Secure connections with wire nuts.
Restore power and test unit.

Tip: Ensure circuit breaker is rated for 15A. Do not use extension cords.

Operation Modes

Supports cooling, fan-only, and dehumidify functions.

Cooling Mode: Set temperature; unit cools to set point.
Fan-Only Mode: Circulates air without cooling.
Dehumidify Mode: Reduces humidity while cooling slightly.
Auto Mode: Automatically switches between cooling and fan based on temperature.
Timer: Program to turn on/off at specific times.
Sleep Mode: Increases temperature gradually over 6 hours for comfort.

WARNING! Do not operate in temperatures below 60°F. Avoid blocking vents.

Maintenance

Regular maintenance ensures optimal performance.

Clean air filter monthly: Remove, wash with mild soap, dry completely.
Inspect coils annually: Remove debris from condenser and evaporator coils.
Check drainage: Ensure condensate drain is clear.
Inspect wiring: Look for frayed or damaged wires.
Lubricate fan motor if required (refer to service manual).

CAUTION! Disconnect power before performing maintenance. Do not use harsh chemicals.

Safety Features

Automatic Overload Protection: Shuts off unit if electrical surge detected. Low-Voltage Shutdown: Turns off when voltage drops below 102V to prevent damage. High-Pressure Cut-Out: Stops compressor if pressure exceeds safe limits. Temperature Sensors: Monitor coil temperatures to avoid freezing or overheating.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. UL Listed: Meets safety standards for RV use. EPA Compliance: Uses R-410A refrigerant, which is ozone-friendly. Copyright © 2023 Dometic Group; trademarks owned by Dometic Sweden AB. For support, visit www.dometic.com or contact 1-800-544-4881.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit not turning on	Power supply/breaker	Check RV power; reset circuit breaker; ensure connections secure.
Insufficient cooling	Dirty filter/coils	Clean air filter; remove debris from coils; check refrigerant levels.
Noisy operation	Loose parts/debris	Tighten mounting bolts; clear obstructions from fan.
Water leakage	Clogged drain	Clear condensate drain line; ensure unit is level.
Remote not working	Batteries/obstructions	Replace batteries; point directly at IR sensor; remove obstacles.
Unit cycles on/off frequently	Thermostat settings	Adjust temperature setting; clean coils; check for overheating.

Reset: Turn off power for 5 minutes, then restart.

Service: 1-800-544-4881; www.dometic.com