Fujitsu Wall Controller Manual

The Fujitsu Wall Controller is a sophisticated control interface designed for managing Fujitsu HVAC systems, featuring intuitive touch controls, temperature monitoring, scheduling capabilities, system mode selection, fan speed control, and advanced programming options. Compatible with various Fujitsu mini-split and multi-zone systems for optimal climate control management. Below are key sections for installation, operation, programming, troubleshooting, and maintenance.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to HVAC System 7. Programming and Scheduling 8. Advanced Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Touch screen display, temperature sensors, mode selection buttons, fan speed controls, scheduling interface, backlit display, wireless connectivity options.

Feature	Description
Touch Screen Display	High-resolution LCD for intuitive control interface
Temperature Control	Precise temperature setting and monitoring
Mode Selection	Cool, Heat, Fan, Dry, Auto modes
Fan Speed Control	Multiple speed settings from Low to High
Scheduling Interface	Daily and weekly programming capabilities
Backlit Display	Automatic dimming for energy efficiency
Wireless Connectivity	Optional Wi-Fi module for remote access
Energy Saving Mode	Optimizes system performance for efficiency
Filter Reminder	Automatic maintenance alerts
Lock Function	Prevents unauthorized setting changes

Installation

Unpack and inspect contents. Mount on interior wall in accessible location.

Select mounting location: Choose interior wall away from direct sunlight and heat sources.
Mount controller: Use provided mounting plate and screws for secure installation.
Connect to HVAC system: Follow wiring diagram for proper connection to indoor unit.
Power connection: Connect to standard 120V AC power outlet.
System pairing: Follow on-screen instructions to pair with HVAC system.

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

First-Time Setup

Power on controller; follow on-screen initialization process.

Language selection: Choose preferred language from available options.
Date and time: Set current date, time, and time zone.
System detection: Controller will automatically detect connected HVAC units.
Temperature units: Select Fahrenheit or Celsius preference.
Initial settings: Configure default temperature, mode, and fan settings.

CAUTION! Ensure proper ventilation around controller. Do not block airflow sensors.

Specifications

Display: 4.3-inch color LCD touch screen
Temperature Range: 60°F to 90°F (16°C to 32°C)
Control Modes: Cool, Heat, Fan, Dry, Auto
Fan Speeds: Auto, Low, Medium, High, Quiet
Power Requirements: 120V AC, 60Hz
Communication: Wired connection to indoor unit, optional Wi-Fi
Operating Temperature: 32°F to 122°F (0°C to 50°C)
Dimensions: 5.9" x 3.9" x 1.2" (150mm x 100mm x 30mm)
Compatibility: Fujitsu mini-split and multi-zone systems

Controls and Settings

Access main menu via touch screen. Navigation buttons: Home, Menu, Back, Power.

Touch Screen Controls: Temperature adjustment, Mode selection, Fan speed, Timer settings, Schedule programming.

Basic Settings: Temperature setpoint, Operation mode, Fan speed, Swing control. Advanced Settings: Weekly schedule, Economy mode, Filter timer, System information, Lock function. Maintenance: Filter reset, System diagnostics, Error history, Firmware updates.

Connecting to HVAC System

Wired connection to indoor unit communication terminal.

Turn off power to HVAC system before connecting wires.
Connect communication wires to designated terminals on indoor unit.
Connect power cable to controller.
Restore power and allow system to initialize.
Follow pairing procedure if multiple controllers are used.

Tip: Use shielded communication cables for optimal performance in electrically noisy environments.

Programming and Scheduling

Advanced scheduling for energy efficiency and comfort.

Daily schedule: Set different temperatures for morning, day, evening, night.
Weekly program: Create separate schedules for weekdays and weekends.
Holiday mode: Temporary schedule overrides for vacations.
Timer functions: One-time on/off timers for immediate needs.
Economy mode: Automatically adjusts settings for energy savings.
Copy schedule: Duplicate settings to other days or periods.

WARNING! Save schedule changes before exiting programming mode to avoid data loss.

Advanced Features

Smart control options and system integration capabilities.

Remote Access: Optional Wi-Fi module enables control via smartphone app. Group Control: Manage multiple indoor units from single controller. Follow Me Function: Uses remote temperature sensor for precise control. Air Quality Monitoring: Optional CO2 and humidity sensors. Maintenance Alerts: Automatic filter replacement reminders and system diagnostics.

Care & Maintenance

Regular cleaning and periodic inspection for optimal performance.

Cleaning: Use soft, dry cloth for screen; mild detergent for housing if needed. Inspection: Check wiring connections annually. Updates: Regular firmware updates for enhanced features. Sensor Calibration: Verify temperature accuracy periodically.

CAUTION! Do not use abrasive cleaners or solvents. Disconnect power before cleaning.

Regulatory Information

FCC Part 15: Class B digital device compliant with residential interference limits. UL Listed: Meets safety standards for electrical equipment. Energy Star: Compliant with energy efficiency guidelines. Copyright © 2025 Fujitsu General Limited; all trademarks property of Fujitsu. For technical support, visit www.fujitsugeneral.com or contact 1-800- Fujitsu.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display	Power loss/connection	Check power connection; verify circuit breaker; inspect wiring.
Touch screen unresponsive	Screen lock/dirt	Clean screen; check lock function; restart controller.
Communication error	Wiring/connection	Verify communication cable connections; check indoor unit power.
Incorrect temperature	Sensor calibration	Recalibrate temperature sensor; check for heat sources nearby.
Schedule not working	Programming error	Verify schedule settings; ensure time/date are correct.
Wi-Fi connection lost	Network issues	Check router connection; reset Wi-Fi module; verify credentials.

Reset: Menu > System > Factory Reset if persistent issues occur.

Service: 1-800-Fujitsu; www.fujitsugeneral.com