Daikin Air Conditioner

This code signifies that the air conditioner is operating normally and no faults have been detected. It is displayed when accessing the error code menu.

This indicates a fault with the main circuit board inside the indoor unit. This part controls the unit's functions.

This code suggests that the system's high pressure has been triggered, or a freeze-up condition has been detected. This is a safety mechanism to prevent damage.

This indicates a problem with the fan motor in the indoor unit. The fan is responsible for circulating air.

This code points to an issue with the sensor that measures the temperature of the heat exchanger. Accurate readings are vital for operation.

This indicates a problem with the sensor that measures the temperature of the air being drawn into the unit. This reading affects performance.

This indicates a general fault with a circuit board, likely in the outdoor unit. This board manages various operations.

This code signifies that the system has detected an overload condition, possibly due to overcurrent. This is a protective shutdown.

This code indicates that the compressor is failing to start correctly. The compressor is essential for cooling and heating.

This code indicates a problem with the DC fan motor, likely in the outdoor unit. This fan is crucial for heat exchange.

This code signifies that the unit has detected an overcurrent condition on the main power input. This is a safety measure.

This code means there's an error during the process of switching between cooling and heating modes. The unit may not be able to change modes correctly.

This code indicates that the discharge pipe temperature has become too high, triggering a safety control. This often relates to airflow or system load.

This code means that during cooling operation, the system's internal pressure has become too high, activating a safety protection.

This is a general sensor fault code. It indicates that one or more sensors within the system are not functioning correctly.

This code indicates that the unit has stopped operating because a position detection sensor is faulty. This sensor helps the unit know its orientation or component positions.

This code indicates a fault with the DC current sensor. This sensor measures electrical current flow within the unit.

This code is similar to C9 and indicates an issue with the sensor measuring the temperature of the air entering the indoor unit.

This indicates that the sensor measuring the temperature of the discharge pipe is not working correctly. This sensor is important for monitoring system performance.

This code indicates a fault with the temperature sensor for the heat exchanger. This sensor is critical for efficient operation.

This code indicates that certain electrical components within the unit are overheating. This is a safety concern.

This code means the heatsink for the inverter circuit is experiencing high temperatures. This can affect the performance and lifespan of the inverter.

This code indicates that the unit's output current has exceeded safe operating limits. This is a protective shutdown.

The green OPERATION lamp is blinking, indicating a potential system error. The unit may have stopped functioning or is not operating correctly.

The OPERATION lamp is blinking, and the unit has stopped. This often means something is blocking the airflow to or from the indoor or outdoor unit.

The unit stops operating temporarily, but the OPERATION lamp remains on. This usually happens to protect the system from sudden large changes in voltage.

This indicates a fault with the temperature sensor monitoring the heatsink of the inverter circuit. This sensor is crucial for preventing overheating.

This code indicates a potential issue with the amount of refrigerant in the system. Low refrigerant can affect cooling or heating performance.

This code indicates that the system has detected either a voltage drop or an overvoltage. This can temporarily stop operation to protect the unit.

This code means there is a problem with the communication signal between the indoor and outdoor units. This prevents them from working together correctly.

This code indicates a fault related to how the indoor and outdoor units are communicating or operating together. It's a general combination error.

You hear a sound that is not normal during operation. This could indicate various issues with the unit's components.

A single beep sound is heard when a setting is changed using the remote controller or ON/OFF switch. This confirms the setting has been registered.

Two short beeps are heard when the operation is started using the ON/OFF switch or remote controller. This confirms the start command.

A long beep sound is heard when the operation is stopped using the ON/OFF switch or remote controller. This confirms the stop command.

A burning smell is detected coming from the unit. This is a critical safety warning indicating a potential fire risk.

The circuit breaker trips repeatedly, cutting off power to the unit. This suggests an electrical problem or the unit drawing too much power.

The power cord feels unusually hot to the touch or shows signs of damage. This is a serious safety hazard.

A control button or switch on the unit or remote control is not functioning as expected. This can make it difficult to operate the unit.

Water is observed leaking from the indoor unit. This could be due to a blocked drain or other internal issues.