Summary of “FGLair Error Codes” Document

The “FGLair Error Codes” document serves as a comprehensive troubleshooting guide for Fujitsu air conditioners connected via the FGLair app. It outlines system error codes, their causes, and corrective actions related to communication, registration, and control issues between the app, wireless router, and the air conditioner unit.

1. General Connectivity Issues

The most common cause across multiple error codes is a loss of Internet or Wi-Fi connectivity. Recurrent troubleshooting steps include:

  • Ensuring the smartphone or tablet is connected to the Internet.

  • Verifying the wireless router is powered on and configured correctly (MAC filter, firewall, channel settings).

  • Restarting the router and retrying the connection.

  • Checking that the air conditioner has power and is not in an error state.

These steps apply broadly to most errors in the 0100–0500 range, which involve command failures.

2. Operational Command Failures

These errors indicate that a command from the app was not successfully transmitted or executed by the air conditioner:

  • 0100–0400 series: Failures in commands such as turning ON/OFF, changing mode, temperature, or fan speed.

  • 0500–0604: Issues with vertical and horizontal louver or swing controls.

  • 0700–0812: Failures in functions like room temperature acquisition, outdoor unit low noise settings, or timer configurations.

Each failure suggests that the command might not have been applied and recommends verifying network status or power supply.

3. Feature-Specific Control Errors

Higher-range codes correspond to specific feature malfunctions:

  • 0900–1500: Failures in enabling or disabling functions like “Energy-saving fan control,” “Human sensor,” “Powerful operation,” “Economy operation,” or “Weekly timer.”

  • 1720, 2400: Errors related to reading device history or resetting filters.

  • 1510–1520: Timer and schedule configuration issues.

4. Registration and Network Setup Errors (2900–3010)

These codes relate to setup or account synchronization:

  • 2930–2938: Failures in connecting or registering the air conditioner with the FGLair app, usually due to incorrect passwords, router mismatches, or network errors.

  • 2936: Sync issues—suggests restarting the app.

  • 3010: Indicates the model name could not be registered.

Recommended actions involve ensuring the same router connection between the app and unit, verifying AP mode, and re-entering passwords correctly.

5. User Account and Configuration Errors (3110–4910)

Errors in this range relate to user management and data retrieval:

  • 3110–3113: Failures when creating, renaming, or deleting air conditioner groups.

  • 4410–4610: Failures in account registration, password change, or deletion.

  • 4910–4920: Time zone setup or data read issues.

Corrective action generally involves re-signing into the app or verifying account credentials.

6. Communication and Data Read Failures (5010–5430)

These cover failures in reading or setting service data:

  • 5010–5020: Email notification setup/read failures.

  • 5320–5430: Air conditioner information retrieval failures—often caused by poor connection or device status errors.

7. Overall Observations

  • Root Cause Trends: Connectivity disruptions and incorrect router or account configurations are the primary sources of failure.

  • Resolution Strategy: The document consistently emphasizes rechecking Internet connectivity, router configuration, air conditioner power, and correct password entry.

  • Purpose: To enable end users and service personnel to diagnose app-related control issues systematically.