Fujitsu Mini Split Thermostat Manual

The Fujitsu Mini Split Thermostat is a sophisticated control interface for Fujitsu mini-split air conditioning systems, featuring digital temperature display, multiple operation modes (Cool, Heat, Fan, Dry, Auto), programmable timers, sleep mode, energy-saving functions, remote control capability, temperature range adjustment, fan speed control, swing direction settings, and filter cleaning reminder. Designed for residential and light commercial use with compatibility across Fujitsu mini-split models. 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 to AC Unit 7. Operation Modes 8. Advanced Functions 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital LCD display, Mode selection buttons, Temperature adjustment, Fan speed control, Timer functions, Remote control sensor, Swing direction settings.

Feature	Description
LCD Display	Shows temperature, mode, timer, and system status
Mode Selection	Cool, Heat, Fan, Dry, Auto operation modes
Temperature Control	16°C - 30°C adjustable range
Fan Speed	Auto, Low, Medium, High, Quiet settings
Timer Functions	24-hour programmable on/off timer
Sleep Mode	Automatic temperature adjustment for comfortable sleep
Energy Saving	Eco mode for reduced power consumption
Swing Control	Adjustable air flow direction
Filter Indicator	Reminder for regular filter cleaning
Remote Control	Wireless operation from distance

Installation

Unpack and inspect contents. Mount thermostat on wall in optimal location.

Choose location: Install away from direct sunlight, heat sources, and drafts.
Mount bracket: Secure mounting bracket to wall using provided screws.
Connect wiring: Follow wiring diagram for connection to indoor unit.
Attach thermostat: Snap thermostat onto mounted bracket.
Power on: Turn on circuit breaker to activate system.

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

First-Time Setup

Power on system; configure initial settings.

Set language: Press SET button and select preferred language.
Configure temperature units: Choose between Celsius and Fahrenheit.
Set current time: Use TIME button to set correct time for timer functions.
Test operation: Run system in each mode to verify proper function.
Program preferences: Set default temperature and mode settings.

CAUTION! Do not expose thermostat to water or extreme temperatures. Keep away from children's reach.

Specifications

Power Supply: 24V AC from indoor unit.
Temperature Range: 16°C - 30°C (61°F - 86°F).
Display: Backlit LCD with temperature and status indicators.
Control Range: Up to 8 meters with remote control.
Operating Modes: Cool, Heat, Fan, Dry, Auto.
Fan Speeds: Auto, Low, Medium, High, Quiet.
Timer: 24-hour programmable.
Compatibility: Fujitsu mini-split systems with compatible interface.
Operating Temperature: 0°C to 50°C (32°F to 122°F).
Dimensions: Standard wall thermostat size.

Controls and Settings

Access functions via front panel buttons or remote control. Front Panel: POWER, MODE, TEMP UP/DOWN, FAN, TIMER.

Remote Control: POWER, MODE, TEMPERATURE, FAN SPEED, TIMER, SWING, SLEEP, ECO, LIGHT.

Temperature: Adjust in 1°C increments. Mode: COOL (air conditioning), HEAT (heating), FAN (ventilation only), DRY (dehumidification), AUTO (automatic mode selection). Fan Speed: AUTO (automatic adjustment), LOW, MEDIUM, HIGH, QUIET (reduced noise). Timer: Program on/off times for energy efficiency. Swing: Adjust vertical and horizontal air flow direction.

Connecting to AC Unit

Wiring connection to indoor unit following manufacturer's diagram.

Turn off power at circuit breaker before connecting wires.
Match wire colors to terminal designations (typically R, C, Y, G, W).
Secure connections with wire nuts or terminal screws.
Test communication between thermostat and indoor/outdoor units.

Tip: Use only manufacturer-approved wiring and follow local electrical codes.

Operation Modes

Multiple operation modes for different comfort needs.

Cool Mode: For air conditioning; set desired temperature.
Heat Mode: For heating; activates heat pump or auxiliary heat.
Fan Mode: Circulates air without cooling or heating.
Dry Mode: Reduces humidity while maintaining temperature.
Auto Mode: System automatically selects Cool or Heat based on room temperature.
Quiet Mode: Reduces fan speed for quiet operation during sleep.
Turbo Mode: Maximum cooling/heating for rapid temperature change.

WARNING! Do not set extreme temperatures that could damage system components.

Advanced Functions

Timer Programming: Set daily on/off schedules. Sleep Mode: Gradual temperature adjustment overnight. Eco Mode: Energy-saving operation. Filter Reminder: Alerts when filter cleaning is needed. Self-Diagnosis: Error code display for troubleshooting. Remote Control: Full function operation from distance.

Care & Maintenance

Regular maintenance ensures optimal performance and longevity.

Clean display: Use soft, dry cloth only.
Check batteries: Replace remote control batteries annually.
Filter maintenance: Clean or replace filters as indicated.
Professional service: Schedule annual maintenance by qualified technician.

CAUTION! Never use water, chemicals, or abrasive cleaners on thermostat. Disconnect power before any maintenance.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © 2025 Fujitsu General; trademarks of Fujitsu General Limited. Energy Star compliant where applicable. For technical support, visit www.fujitsugeneral.com or contact 1-800-555-1234. Manufactured in compliance with international quality and safety standards.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display	Power loss/wiring	Check circuit breaker; verify wiring connections; ensure indoor unit power.
Not cooling/heating	Mode setting/temperature	Verify correct mode selection; check temperature setting; ensure outdoor unit operation.
Remote not working	Batteries/obstacles	Replace batteries; remove obstacles; point directly at sensor.
Error codes displayed	System fault	Note error code; consult service manual; contact technician if persistent.
Uneven temperature	Location/settings	Relocate thermostat; adjust swing settings; check for drafts.
Timer not functioning	Programming/time setting	Verify current time; reprogram timer; reset to factory defaults if needed.

Reset: Hold SET and MODE buttons for 5 seconds to reset to factory defaults.

Service: 1-800-555-1234; www.fujitsugeneral.com