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Comprehensive List of Inverter AC Error Codes and Their Solutions

Inverter air conditioners are highly efficient, but occasional errors may occur. Below is a complete list of common invitor AC error codes, their meanings, and solutions to help you troubleshoot effectively. Comprehensive List of Inverter AC Error Codes and Their Solutions

1. General Error Codes

E1: Indoor Unit Sensor Fault

  • Meaning: Temperature sensor malfunction.
  • Solution:
    • Check the sensor wiring for loose connections.
    • Replace the sensor if necessary.

E2: Indoor Coil Sensor Fault

  • Meaning: Fault in the indoor coil temperature sensor.
  • Solution:
    • Verify sensor connections.
    • Replace the coil sensor if damaged.

E3: Outdoor Unit Sensor Fault

  • Meaning: Malfunction in the outdoor unit temperature sensor.
  • Solution:
    • Inspect sensor wiring and connections.
    • Replace the outdoor sensor if required.

E4: High-Pressure Protection

  • Meaning: Excessive refrigerant pressure.
  • Solution:
    • Clean the condenser coils.
    • Check and adjust refrigerant levels.

E5: Overcurrent Protection

  • Meaning: Excessive current detected in the system.
  • Solution:
    • Check for wiring faults.
    • Verify proper voltage supply.

E6: Communication Error

  • Meaning: Communication failure between indoor and outdoor units.
  • Solution:
    • Inspect the communication cables.
    • Reset the system and reconnect.

E7: Outdoor Fan Motor Error

  • Meaning: Outdoor fan is not functioning properly.
  • Solution:
    • Check for debris obstructing the fan.
    • Replace the fan motor if necessary.

2. Refrigerant and Pressure-Related Codes

F0: Low Refrigerant

  • Meaning: Insufficient refrigerant in the system.
  • Solution:
    • Repair refrigerant leaks.
    • Recharge the system with the correct refrigerant amount.

F1: Refrigerant Leak

  • Meaning: Detects a leakage in the refrigerant system.
  • Solution:
    • Locate and seal the leak.
    • Refill the refrigerant as needed.

P0: Inverter Drive Malfunction

  • Meaning: Fault in the inverter module.
  • Solution:
    • Check the inverter drive for faults.
    • Replace or repair the drive module.

P1: High-Pressure Protection

  • Meaning: High refrigerant pressure in the system.
  • Solution:
    • Clean the outdoor unit.
    • Ensure proper airflow around the condenser.

P2: Low-Pressure Protection

  • Meaning: Low refrigerant pressure.
  • Solution:
    • Check for leaks in the system.
    • Recharge refrigerant levels.

3. Compressor-Related Codes

H3: Compressor Overload

  • Meaning: Compressor is overheating or overloaded.
  • Solution:
    • Allow the compressor to cool down.
    • Check for voltage fluctuations or wiring issues.

H5: Compressor Drive Error

  • Meaning: Malfunction in the compressor drive.
  • Solution:
    • Inspect the drive module.
    • Seek professional repair assistance.

L3: Compressor Start Failure

  • Meaning: Compressor is unable to start.
  • Solution:
    • Check the start capacitor.
    • Inspect wiring and connections to the compressor.

4. Fan and Sensor Codes

F3: Outdoor Unit Fan Error

  • Meaning: Outdoor fan is malfunctioning.
  • Solution:
    • Inspect the fan motor and wiring.
    • Replace the fan motor if needed.

F4: Indoor Fan Error

  • Meaning: Indoor fan is not functioning correctly.
  • Solution:
    • Clean the fan blades.
    • Check the fan motor for faults.

C5: Jumper Connection Error

  • Meaning: Fault in the jumper connection on the control board.
  • Solution:
    • Verify the jumper connections on the PCB.
    • Correct the jumper configuration if needed.

5. Other Common Codes

L5: Voltage Fluctuation Error

  • Meaning: Power supply issue.
  • Solution:
    • Use a voltage stabilizer.
    • Check the electrical wiring.

H6: No Feedback from Indoor Fan Motor

  • Meaning: Indoor fan motor feedback is missing.
  • Solution:
    • Inspect the motor wiring.
    • Replace the fan motor if necessary.

U1: Voltage Drop Error

  • Meaning: Significant voltage drop detected.
  • Solution:
    • Stabilize the voltage supply.
    • Replace any faulty wiring.

U3: Unit Protection Mode

  • Meaning: AC has entered protection mode due to a fault.
  • Solution:
    • Reset the unit.
    • Identify and fix the underlying issue.

Prevention Tips for Inverter AC Errors

  1. Regular Maintenance: Schedule periodic servicing to clean filters, coils, and fans.
  2. Professional Installation: Ensure your AC is installed by certified technicians.
  3. Stabilized Power Supply: Use a voltage stabilizer to avoid power-related errors.
  4. Timely Repairs: Address small faults promptly to prevent larger issues.

Keywords for Easy Reference

  • Inverter AC error code list
  • Common inverter AC error codes and solutions
  • E1 error in inverter AC
  • F0 and P1 error codes
  • Inverter AC troubleshooting guide
  • Compressor error codes in inverter AC

By understanding these inverter AC error codes and their solutions, you can troubleshoot and resolve most issues effectively. Always consult a professional technician for complex problems to ensure your AC functions optimally. Let me know if you’d like further adjustments or additional information! Follow on instragram

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