Daikin FTXF-D
32 fault codes documented
4-way valve abnormality
The 4-way valve, which controls refrigerant flow direction, is malfunctioning.
Single beep - Setting changes
A single beep indicates that a setting has been successfully changed or accepted by the unit.
Two beeps - Operation starts
You will hear two short beeps when the indoor unit receives a signal and starts operating.
Operation lamp flashes and malfunction code appears
The operation lamp is flashing and a specific malfunction code is shown on the user interface display. This indicates the unit has detected a problem.
Compressor internal temperature error
The internal temperature of the compressor has exceeded its safe limit.
Compressor lock error
The compressor has encountered a lock condition and cannot operate.
Compressor system sensor abnormality
One of the sensors monitoring the compressor system has a fault.
Outdoor fan motor lock error
The DC fan motor in the outdoor unit is locked or not rotating.
DC voltage or current sensor abnormality
A sensor measuring DC voltage or current within the unit has a fault.
Discharge pipe temperature control activated
The system has activated protection due to the discharge pipe temperature being too high or too low.
Discharge pipe thermistor abnormality
The sensor measuring the temperature of the discharge pipe has a fault.
Electrical parts overheating error
Internal electrical components have overheated, triggering a protective shutdown.
Indoor fan motor abnormality
The DC fan motor in the indoor unit is not functioning correctly.
Freeze-up protection or high-pressure control activated
The unit has activated its protection against freezing or excessively high pressure. This often occurs in heating or cooling modes.
High-pressure control activated in cooling mode
The system has detected high pressure during cooling operation and has shut down to protect itself.
Indoor heat exchanger thermistor abnormality
The sensor measuring the temperature of the indoor heat exchanger has a fault.
Indoor unit PCB abnormality
There is a fault with the main control board (PCB) in the indoor unit.
Indoor and outdoor unit combination fault
The indoor and outdoor units are not compatible or have a configuration error.
Input power overcurrent detected
The unit is drawing too much current from the power supply, indicating a potential electrical issue.
Inverter instantaneous DC overcurrent
The inverter has detected a very high, sudden current, which can indicate a serious electrical fault.
Long beep - Operation stops
A long beep is heard when the unit receives a signal to stop the operation.
Outdoor heat exchanger thermistor abnormality
The sensor measuring the temperature of the outdoor heat exchanger has a fault.
Outdoor temperature thermistor abnormality
The sensor measuring the outdoor temperature has a fault.
Outdoor unit PCB abnormality
There is a fault with the main control board (PCB) in the outdoor unit.
Compressor overload protection activated
The compressor has been overloaded and has temporarily shut down to prevent damage.
Overvoltage detected
The system has detected a voltage that is too high. This could damage the unit.
Position sensor abnormality
A sensor responsible for detecting the position of a component has a fault.
Radiation fin temperature rising too high
The temperature of the radiation fins has risen to a critical level, indicating a potential cooling issue.
Radiation fin thermistor abnormality
The sensor monitoring the temperature of the radiation fins has a fault.
Refrigerant shortage detected
The system indicates a potential shortage of refrigerant. This can affect cooling and heating performance.
Room temperature thermistor abnormality
The sensor that measures the room temperature is not working correctly.
Signal transmission error between indoor and outdoor unit
There is a communication problem between the indoor and outdoor units. This prevents the system from operating correctly.