Fujitsu Room Air Conditioner Service Manual

The Fujitsu Room Air Conditioner is a high-efficiency cooling system featuring advanced inverter technology, multiple operation modes, intelligent temperature control, remote operation, timer functions, air swing control, sleep mode, energy-saving features, and comprehensive safety protections. Below are key sections for safety guidelines, technical specifications, installation procedures, operation instructions, maintenance guidelines, and troubleshooting.

1. Features at a Glance 2. Installation Guidelines 3. Operation Instructions 4. Technical Specifications 5. Controls and Settings 6. Maintenance Procedures 7. Error Codes and Diagnostics 8. Safety Features 9. Cleaning and Care 10. Regulatory Compliance 11. Troubleshooting Guide

Features at a Glance

Key components: Indoor unit with LCD display, Remote Control, Outdoor compressor unit, Air filters, Drain pipe, Power cord, Refrigerant connections.

FeatureDescription
Inverter TechnologyEnergy-efficient variable speed compressor
Operation ModesCool, Heat, Dry, Fan, Auto
Temperature ControlPrecise ±1°C adjustment
Remote ControlWireless operation with LCD display
Timer Functions24-hour on/off programming
Air SwingVertical and horizontal louvers
Sleep ModeAutomatic temperature adjustment
Energy SavingEco mode for reduced power consumption
Air FilterWashable anti-bacterial filter
Safety ProtectionsAuto-restart, frost protection, overload protection

Installation Guidelines

Proper installation is crucial for optimal performance and safety.

  1. Select installation location: Ensure proper clearance (minimum 50cm from walls and ceiling).
  2. Mount indoor unit: Use provided mounting bracket and ensure level installation.
  3. Install outdoor unit: Place on stable surface with proper ventilation.
  4. Connect refrigerant pipes: Ensure tight connections and proper insulation.
  5. Electrical connections: Follow local electrical codes and use dedicated circuit.
  6. Drain pipe installation: Ensure proper slope for water drainage.

WARNING! Installation must be performed by qualified technicians only. Incorrect installation may cause water leakage, electric shock, or fire.

Operation Instructions

Power on unit; use remote control for operation.

  1. Basic operation: Press POWER button on remote or indoor unit.
  2. Mode selection: Select COOL, HEAT, DRY, FAN, or AUTO mode.
  3. Temperature setting: Use ▲/▼ buttons to set desired temperature.
  4. Fan speed: Select AUTO, LOW, MEDIUM, or HIGH speed.
  5. Air direction: Adjust vertical and horizontal louvers for optimal air distribution.
  6. Timer setting: Program ON/OFF times for automatic operation.

CAUTION! Do not operate unit with wet hands. Keep remote control dry and away from direct sunlight.

Technical Specifications

Controls and Settings

Access functions via remote control or indoor unit buttons.

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

Operation Modes: COOL (blue light), HEAT (orange light), DRY (green light), FAN (white light), AUTO (auto selection). Fan Speed: AUTO, LOW, MEDIUM, HIGH. Timer: ON timer (1-24 hours), OFF timer (1-24 hours). Special Functions: SLEEP mode (automatic temperature adjustment), SWING (louver movement), I-FEEL (temperature sensing from remote), ECO mode (energy saving).

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

  1. Air filter cleaning: Clean every 2 weeks during operation period.
  2. Outdoor unit maintenance: Keep condenser coils clean and free from debris.
  3. Indoor unit cleaning: Wipe with soft dry cloth; do not use chemicals.
  4. Drain pipe inspection: Ensure proper drainage and clear any blockages.
  5. Annual professional service: Recommended for refrigerant check and electrical inspection.

Tip: Always turn off power before performing any maintenance.

Error Codes and Diagnostics

Unit displays error codes for troubleshooting.

  1. E1: Room temperature sensor error - Check sensor connection
  2. E2: Heat exchanger temperature sensor error - Replace sensor if faulty
  3. E3: Communication error between indoor and outdoor units - Check wiring
  4. E4: Outdoor unit protection - Check outdoor unit conditions
  5. E5: Overcurrent protection - Check electrical components
  6. E6: Compressor overload - Allow unit to cool down
  7. E7: High pressure protection - Check refrigerant pressure
  8. E8: Low pressure protection - Check for refrigerant leaks
  9. E9: Anti-freeze protection - Check indoor temperature

WARNING! For complex error codes, contact qualified service technician.

Safety Features

Auto-restart: Resumes previous settings after power interruption. Frost Protection: Prevents coil freezing in heating mode. Overload Protection: Protects compressor from damage. Child Lock: Prevents accidental operation. Leakage Protection: Ground fault circuit interrupter.

Cleaning and Care

Turn off power before cleaning. Use soft dry cloth for indoor unit; clean outdoor unit with water spray.

CAUTION! Do not use abrasive cleaners, gasoline, or chemicals. Do not wash unit with water directly.

Regulatory Compliance

CE Certified: Complies with European safety standards. RoHS Compliant: Free from hazardous substances. Energy Rating: A++ to A+++ efficiency ratings. Refrigerant Compliance: Meets F-gas regulations. For technical support, visit www.fujitsu-general.com or contact authorized service centers.

Troubleshooting Guide

SymptomPossible CauseCorrective Action
Unit not startingPower supply/remote batteriesCheck power connection; replace remote batteries; ensure unit is plugged in.
Poor cooling/heatingDirty filters/temperature settingClean air filters; check temperature setting; ensure doors/windows closed.
Water leakageClogged drain pipeClear drain pipe; ensure proper installation slope.
Unusual noiseLoose parts/fan obstructionCheck for loose components; remove obstructions from fans.
Remote not workingBatteries/obstaclesReplace batteries; ensure direct line of sight to indoor unit.
Unit freezing upLow temperature/dirty filtersIncrease temperature setting; clean filters; check for proper airflow.

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

Service: Contact authorized Fujitsu service center; www.fujitsu-general.com

Fujitsu Room Air Conditioner Service Manual © - All Rights Reserved 2025