Fujitsu Outdoor Unit Manual

The Fujitsu Outdoor Unit is a high-performance air conditioning system component designed for reliable operation in various environmental conditions. This unit features advanced compressor technology, energy-efficient operation, weather-resistant construction, smart connectivity options, and compatibility with multiple indoor units. Below are key sections covering installation, operation, maintenance, troubleshooting, and technical specifications.

Features at a Glance

Key components: High-efficiency rotary compressor, aluminum fin copper tube heat exchanger, weatherproof casing, LED diagnostic indicators, refrigerant connections, electrical terminal block.

Feature	Description
Compressor Type	Inverter-driven rotary compressor for variable speed operation
Heat Exchanger	Aluminum fins with copper tubes for optimal heat transfer
Weather Protection	Corrosion-resistant coating and IPX4 weatherproof rating
Operating Range	-15°C to 46°C cooling; -20°C to 24°C heating
Refrigerant	R32 eco-friendly refrigerant
Sound Level	As low as 45 dB(A) in quiet mode
Connectivity	Wired controller interface and optional Wi-Fi module
Diagnostic LEDs	Multi-color indicators for system status and errors
Defrost System	Automatic reverse cycle defrost for heating operation
Fan Motor	DC motor with multiple speed settings

Installation Guidelines

Proper installation is crucial for optimal performance and longevity.

1. Location Selection: Choose well-ventilated area with minimum 30cm clearance on all sides.
2. Mounting: Use vibration-absorbing pads and secure with appropriate fasteners.
3. Refrigerant Piping: Connect using flare fittings; ensure proper insulation.
4. Electrical Connection: Connect to dedicated circuit with proper grounding.
5. Drainage: Install condensate drain line with proper slope.

WARNING! Installation must be performed by qualified HVAC technician. Incorrect installation may void warranty.

First-Time Setup

Initial commissioning and system configuration.

1. Power Verification: Ensure correct voltage supply (208-230V).
2. System Check: Verify refrigerant charge and piping integrity.
3. Communication Test: Establish connection with indoor units.
4. Operation Test: Run system in cooling and heating modes.
5. Settings Configuration: Program operating parameters via controller.

CAUTION! Do not operate without proper refrigerant charge. System damage may occur.

Technical Specifications

• Model Series: AOUxxRLXFZ series
• Power Supply: 208-230V, 1-phase, 60Hz
• Cooling Capacity: 9,000 - 36,000 BTU/h
• Heating Capacity: 10,000 - 40,000 BTU/h
• Refrigerant Type: R32
• Maximum Piping Length: 50 meters
• Maximum Height Difference: 30 meters
• Dimensions: Varies by model (approx. 80-120cm width)
• Weight: 35-85 kg depending on capacity
• Sound Pressure: 45-62 dB(A)

Controls and Operation

Unit operation via wired remote controller or optional wireless interface.

Operating Modes: Auto, Cool, Heat, Dry, Fan Only, Auto Changeover

Advanced Features: Weekly timer, economy mode, quiet operation, powerful mode, i-auto operation

Fan Speeds: Auto, Low, Medium, High, Quiet, Powerful

Temperature Range: 16°C - 30°C (60°F - 86°F)

Maintenance Functions: Filter reset, self-cleaning operation, error history display

Connecting to Indoor Units

Multi-split system configuration and connection procedures.

1. Compatibility Check: Ensure indoor units are compatible with outdoor unit capacity.
2. Address Setting: Assign unique addresses to each indoor unit.
3. Piping Connection: Connect refrigerant lines using proper flare tools.
4. Wiring: Connect communication and power cables as per wiring diagram.
5. Leak Testing: Perform pressure test and vacuum dehydration.

Tip: Always use manufacturer-approved accessories and components.

Maintenance Procedures

Regular maintenance ensures optimal performance and energy efficiency.

1. Monthly: Clean air filters on indoor units.
2. Seasonal: Inspect and clean outdoor unit heat exchanger.
3. Annual: Check refrigerant charge and electrical connections.
4. Biannual: Clean drain pans and check drainage system.
5. As Needed: Clear debris from around outdoor unit.

WARNING! Disconnect power before performing any maintenance. High voltage present.

Error Codes and Diagnostics

LED indicators and remote controller display provide diagnostic information.

LED Pattern	Error Code	Description
Green flashing	Normal operation	System functioning properly
Red flashing 2x	E1	Communication error with indoor unit
Red flashing 3x	E3	High pressure protection
Red flashing 4x	E4	Low pressure protection
Red flashing 5x	E5	Compressor overload
Red flashing 6x	E6	Fan motor fault

Seasonal Operation

Optimize system performance for different seasons.

Summer Operation: Ensure adequate airflow; clean condenser coils; check refrigerant charge

Winter Operation: Clear snow and ice buildup; ensure proper defrost operation; check heating performance

Off-Season: Cover unit if not in use; disconnect power if extended non-use

Transition Periods: Test both cooling and heating functions before peak seasons

Regulatory Compliance

Fujitsu outdoor units comply with international standards and regulations including UL 1995, CSA C22.2, CE marking, and ENERGY STAR® certification where applicable. Units use R32 refrigerant with low global warming potential. All electrical components meet relevant safety standards. For technical support and warranty information, contact Fujitsu Technical Support at 1-855-385-4357 or visit www.fujitsugeneral.com.

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Unit not starting	Power supply issue	Check circuit breaker; verify voltage; ensure remote communication
Reduced cooling/heating	Dirty filters/coils	Clean filters; clear debris from outdoor unit; check refrigerant
Unusual noises	Loose components	Tighten mounting hardware; check fan blades; inspect compressor
Water leakage	Clogged drain	Clear drain line; ensure proper slope; check drain pan
Error code display	System fault	Refer to error code table; contact service technician if persistent

Reset Procedure: Turn off power for 10 minutes, then restart.

Service Contact: 1-855-385-4357; www.fujitsugeneral.com