Technicians for Fedders air conditioners generally excel in diagnosing issues accurately. However, there was one instance where a refrigerant leak was initially misdiagnosed as a faulty compressor, leading to an unnecessary replacement and additional costs. More rigorous diagnostic checks could prevent such errors.
E1: Temperature Sensor Fault
The air conditioner’s internal sensor is malfunctioning or providing inaccurate readings. It might need a check or replacement.
E2: Evaporator Sensor Fault
The sensor in the evaporator unit is not functioning correctly. Check its connections or consider replacing it.
E3: High Pressure Protect
The system has detected excessive pressure, possibly due to a refrigerant issue or a blocked condenser coil.
E4: Low Pressure Protect
The system pressure is too low, which could be due to a refrigerant leak or other related problems.
E5: Compressor Overload
The compressor is working harder than usual, which might lead to overheating. Ensure there’s proper airflow and the refrigerant levels are correct.
E6: Communication Error
The main unit is having trouble communicating with the indoor or outdoor units. Check the wiring and connections between units.
E7: Coil Overheat
The coils are getting too hot, which can be due to blocked filters or airflow problems.
E8: Coolant Leakage
The system has detected a potential leak in the refrigerant. This requires professional inspection and repair.
E9: Drainage Issue
Water isn’t draining correctly from the unit. Check for blockages in the drain pan or tubes.
E10: Fan Motor Fault
The fan motor is malfunctioning or not running. This can be due to electrical issues, obstructions, or motor wear and tear.
E11: Remote Control Signal Issue
The main unit is not receiving signals from the remote control. Ensure the remote has fresh batteries and is operating within range.
E12: Overcurrent Detected
The system has detected an excessive current flow, which can be risky. This might be due to an internal electrical fault or an external power supply issue.
E13: EEPROM Error
The system’s memory module (EEPROM) is encountering errors. This typically requires technical assessment and potential replacement.
E14: Overcooling Protection
The unit is cooling more than necessary, leading to potential freezing issues. Ensure the thermostat is set correctly and check for sensor malfunctions.
E15: Inverter Compressor Fault
If the unit uses inverter technology, this error indicates a problem with the inverter compressor. It might be due to electrical issues or compressor malfunctions.
E16: Indoor/Outdoor Unit Mismatch
The indoor and outdoor units are not compatible or not communicating correctly. Ensure both units are of the correct model or series.
E17: Power Supply Frequency Error
The unit is detecting irregularities in the power supply frequency, which could be due to local grid issues or internal power components of the AC.
E18: Transformer Fault
The unit’s internal transformer is malfunctioning, leading to potential power supply issues. Professional assessment is recommended.
