Fujitsu Ductless Mini Split Installation Manual

The Fujitsu Ductless Mini Split system is a high-efficiency heating and cooling solution featuring inverter technology, multiple indoor unit options, wireless remote control, auto-swing louvres, quiet operation, and advanced filtration. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

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

Features at a Glance

Key components: Outdoor compressor unit, Indoor air handler, Remote control, Refrigerant lines, Drain hose, Power cables.

Feature	Description
Inverter Technology	Variable speed compressor for energy efficiency
Wireless Remote	Full function control from anywhere in room
Auto-swing Louvres	Automatic air direction adjustment
Quiet Operation	Low noise levels for peaceful environment
Advanced Filtration	Removes dust, pollen, and allergens
Multiple Modes	Cool, Heat, Fan, Dry, Auto
Timer Function	Programmable on/off times
Sleep Mode	Quiet operation with gradual temperature adjustment
Emergency Operation	Manual override capability
Self-diagnosis	Automatic error detection and display

Installation

Unpack and inspect all components. Select appropriate location for indoor and outdoor units.

Mount indoor unit: Install on wall with proper clearance (minimum 6 inches from ceiling).
Install outdoor unit: Place on stable surface with adequate ventilation.
Connect refrigerant lines: Use flare connections with proper torque.
Connect drain hose: Ensure proper slope for water drainage.
Connect electrical: Follow local electrical codes and manufacturer specifications.
Vacuum and charge: Evacuate system and charge with specified refrigerant.

WARNING! Only qualified HVAC technicians should perform installation. Follow all safety procedures and local codes.

First-Time Setup

Power on system; follow initial setup procedure.

Test operation: Run system in cooling mode to verify proper function.
Set temperature: Use remote to set desired temperature.
Configure timer: Program on/off times if desired.
Adjust louvres: Set auto-swing or fixed position.
Test all modes: Verify cooling, heating, fan, and dry modes work properly.

CAUTION! Ensure proper clearance around both indoor and outdoor units for adequate airflow.

Specifications

Cooling Capacity: 9,000 - 36,000 BTU/h
Heating Capacity: 10,000 - 38,000 BTU/h
Power Supply: 208/230V, 60Hz
Refrigerant: R410A
Operating Range: Cooling: 14°F to 115°F; Heating: -5°F to 75°F
Noise Level: Indoor: 19-34 dB; Outdoor: 49-58 dB
Dimensions: Varies by model
Weight: Varies by model

Controls and Settings

Access functions via wireless remote or indoor unit buttons.

Remote Functions: POWER, MODE, TEMP ▲/▼, FAN SPEED, TIMER, SWING, SLEEP, RESET.

Mode Selection: COOL, HEAT, FAN, DRY, AUTO. Fan Speed: AUTO, LOW, MEDIUM, HIGH, QUIET. Timer: 1-24 hour programmable. Temperature Range: 60°F - 86°F. Swing: Auto or manual louvre control. Sleep: Gradual temperature adjustment over 7 hours.

Connecting Components

Proper connection of indoor and outdoor units is critical for system performance.

Refrigerant lines: Connect with flare nuts using proper torque.
Electrical wiring: Connect power and communication cables per wiring diagram.
Drain line: Install with continuous downward slope.
Insulation: Properly insulate refrigerant lines.
Communication: Ensure proper connection of control wires.

Tip: Always use nitrogen when brazing to prevent oxidation inside copper lines.

Operation Modes

Multiple operating modes for different comfort needs.

Cooling Mode: For summer comfort cooling.
Heating Mode: For winter heating operation.
Fan Mode: Circulates air without cooling/heating.
Dry Mode: Reduces humidity while maintaining temperature.
Auto Mode: Automatically selects cooling or heating based on room temperature.
Quiet Mode: Reduces fan speed for minimal noise.
Turbo Mode: Maximum cooling/heating for rapid temperature change.

WARNING! Do not operate heating mode below specified outdoor temperature to prevent system damage.

Maintenance Features

Auto-restart: Resumes previous settings after power outage. Self-cleaning: Automatically dries indoor unit to prevent mold. Filter reminder: Indicates when filter needs cleaning. Error codes: Displays fault codes for troubleshooting.

Care & Cleaning

Turn off power before cleaning. Clean air filter every 2-4 weeks. Wipe indoor unit with soft dry cloth.

CAUTION! Do not use water hotter than 104°F for cleaning. Do not use abrasive cleaners or solvents.

Regulatory Information

UL/CSA certified. Meets DOE energy efficiency standards. EPA refrigerant handling certification required for service. Copyright © 2025 Fujitsu General; all rights reserved. For support, visit www.fujitsugeneral.com or contact 1-800-843-0604.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit not cooling/heating	Power/remote/settings	Check power supply; verify remote batteries; confirm mode selection.
Water leakage	Drain blockage	Check drain line for obstruction; ensure proper slope.
Unusual noise	Loose parts/fan	Check for loose panels; inspect fan blades; verify proper installation.
Error code displayed	System fault	Refer to error code chart in manual; contact service if needed.
Remote not working	Batteries/obstruction	Replace batteries; ensure clear line of sight to indoor unit.

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

Service: 1-800-843-0604; www.fujitsugeneral.com