Daikin room air

60 fault codes documented

4-way valve abnormality

4-way valve abnormality — Refrigerant flow control issue

This error points to a problem with the 4-way reversing valve, which controls the flow of refrigerant to switch between heating and cooling modes. A malfunction can prevent proper operation.

A clapping sound is heard

A clapping sound is heard — External device interfering

A clapping sound may occur if an external device, like an exhaust fan or range hood, is removing air from the room. This creates a pressure difference that can cause noise.

Abnormal function during operation (lightning/radio waves)

Abnormal function during operation — Interference suspected

The air conditioner is experiencing unexpected behavior, possibly due to external factors like lightning or strong radio waves. This can cause temporary malfunctions.

Clock and timer icons blink

Clock and timer icons blink — Clock setting missing or incorrect

The clock and timer related icons are blinking on the display. This means the unit's internal clock has not been set or has lost its time.

Compressor internal temperature error

Compressor internal temperature error — Compressor overheating

The internal temperature of the compressor has exceeded safe limits. This is a serious issue that can damage the compressor.

Compressor lock

Compressor lock — Compressor failed to start

This error means the compressor is locked or unable to start its operation. This is a serious issue that requires professional attention.

Cooling or heating is insufficient

Cooling or heating is insufficient — Performance reduced

The air conditioner is running, but it's not cooling or heating effectively. This could be due to settings, airflow issues, or filter problems.

DC fan lock

DC fan lock — Outdoor fan motor stalled

This error code indicates that the DC fan motor in the outdoor unit is locked or unable to rotate. This prevents proper heat exchange.

DC voltage / current sensor abnormality

DC voltage / current sensor abnormality — Measurement error

The sensors responsible for measuring DC voltage and current are not functioning correctly. This can lead to inaccurate power readings and potential system issues.

Discharge pipe temperature control

Discharge pipe temperature control — Overheating protection

This fault relates to the temperature of the discharge pipe, indicating it has become too hot. The system activates this control to prevent damage from overheating.

Discharge pipe thermistor abnormality

Discharge pipe thermistor abnormality — Pipe temp sensor error

An error has been detected with the temperature sensor on the discharge pipe. This sensor is important for monitoring the system's refrigeration cycle.

E15

Error E15 — Compressor system sensor abnormality

The air conditioner has detected an issue with the sensors related to the compressor system. This means the system cannot accurately monitor its performance.

Electrical parts heat error

Electrical parts heat error — Overheating detected

The unit has detected that internal electrical components are overheating. This is a safety measure to prevent damage.

err 20

Error 20 — Signal transmission error

This error code indicates a problem with the signal transmission between the indoor and outdoor units. It might mean the communication line is interrupted or faulty.

Error code displayed on user interface

Error code displayed on user interface — System fault indicated

An error code is shown on the user interface display, signaling a specific problem within the air conditioner system. Refer to the error code list for details.

Fan motor (DC motor) abnormality

Fan motor (DC motor) abnormality — Indoor fan motor issue

This fault code points to a problem with the DC fan motor in the indoor unit. The fan may not be spinning, spinning too slowly, or making unusual noises.

Freeze-up protection or high-pressure control

Freeze-up protection or high-pressure control — Ice formation or pressure issue

This message indicates that the unit has activated a protection mode. This could be due to ice forming on the indoor coil or excessively high pressure within the system.

Front panel does not open

Front panel does not open — Panel stuck

The front panel of the unit cannot be opened. This might be due to an obstruction or a mechanical issue.

Green LED blinking

Green LED blinking — Intelligent Eye sensor active

The green Intelligent Eye lamp blinks to show that the sensor is detecting occupancy or movement in the room. This feature helps save energy by adjusting operation based on room presence.

Green LED solid

Green LED solid — Unit is operating normally

The green operation lamp on the indoor unit indicates that the air conditioner is currently running. This is the normal operating status.

Heating is insufficient (no air blown)

Heating is insufficient (no air blown) — Heat not distributed

The unit is operating, but warm air is not being blown out. This might be during the initial warm-up or defrost cycle.

Heating operation cannot be selected

Heating operation cannot be selected — Heat mode unavailable

The option to select heating mode is not available on the user interface. This may be due to a specific jumper setting.

High-pressure control (in cooling mode)

High-pressure control (in cooling mode) — Excessive system pressure

This error means the system pressure has become too high while in cooling mode. This can be caused by issues restricting refrigerant flow or heat dissipation.

Humidity sensor error

Humidity sensor error — Humidity sensor fault

This error code signifies a malfunction with the humidity sensor inside the indoor unit. This sensor is responsible for detecting and regulating room humidity levels.

Indoor heat exchanger thermistor abnormality

Indoor heat exchanger thermistor abnormality — Temperature sensor fault

This error indicates that the temperature sensor (thermistor) monitoring the indoor heat exchanger is not functioning correctly. This can affect temperature regulation.

Indoor unit PCB abnormality

Indoor unit PCB abnormality — Electronic control board issue

This indicates a malfunction with the main electronic control board (PCB) inside the indoor unit. This board manages the unit's functions.

Indoor/outdoor unit combination fault

Indoor/outdoor unit combination fault — Incompatible units detected

This error suggests that the indoor and outdoor units are not compatible with each other, or there's an issue with their combination settings. This can happen if units were replaced or incorrectly installed.

Input power overcurrent

Input power overcurrent — Excessive electrical current drawn

This error indicates that the unit is drawing too much electrical current from the power supply. This can be caused by internal faults or issues with the power source.

Inverter instantaneous overcurrent (DC)

Inverter instantaneous overcurrent (DC) — Power surge detected

The inverter has experienced a sudden, high surge of direct current. This is a critical error that requires attention.

Low battery indicated

Low battery indicated — Remote control batteries need replacing

The user interface's LCD display is flashing, indicating that the batteries are low and need to be replaced soon.

Malfunction code displayed

Malfunction code displayed — Error code shown on display

The user interface shows a malfunction code, and the operation lamp may be flashing. This indicates a specific system error.

ON/OFF timer does not operate correctly

ON/OFF timer does not operate correctly — Timer settings inaccurate

The timer functions (ON/OFF timer, weekly timer) are not starting or stopping the unit as programmed. This is often due to incorrect clock or timer settings.

Opening or closing front panel error

Opening or closing front panel error — Panel sensor issue

This error suggests a problem with the sensors that detect whether the front panel of the indoor unit is open or closed. The unit may not operate if it thinks the panel is not properly secured.

Operation starts

Beep-beep — Operation starts

You will hear two short beeps ('beep-beep') when the indoor unit successfully receives a signal to start operation from the user interface.

Operation stops

Long beep — Operation stops

A long beep sound is heard when the unit successfully receives a signal to stop operation from the user interface.

Orange LED solid

Orange LED solid — Timer is set

The orange timer lamp on the indoor unit means that a timer function has been activated. The unit will turn on or off according to the set timer schedule.

Outdoor heat exchanger thermistor abnormality

Outdoor heat exchanger thermistor abnormality — Outdoor sensor error

The temperature sensor for the outdoor heat exchanger is reporting an abnormality. This can affect the efficiency of heat exchange with the outside air.

Outdoor temperature thermistor abnormality

Outdoor temperature thermistor abnormality — Incorrect outdoor temp reading

The sensor that measures the outside temperature is malfunctioning. This prevents the unit from accurately adjusting its operation based on ambient conditions.

Outdoor unit PCB abnormality

Outdoor unit PCB abnormality — Outdoor control board issue

This error indicates a problem with the main electronic control board (PCB) located in the outdoor unit. This board manages the outdoor unit's operations.

Overload activation (compressor overload)

Overload activation (compressor overload) — Compressor protection activated

This indicates that the compressor has been overloaded and has shut down to protect itself. This is often caused by operating conditions that put too much strain on the compressor.

Overvoltage detection

Overvoltage detection — Power supply voltage too high

This error means the voltage supplied to the air conditioner is too high, which could damage the unit's components. The system likely shut down to protect itself.

Position sensor abnormality

Position sensor abnormality — System error detected

There is a problem with the position sensor, which helps the unit determine its orientation or component positions. This can affect proper operation.

Radiation fin temperature rise

Radiation fin temperature rise — Fins are too hot

The temperature of the unit's radiation fins has risen too high. This indicates a potential issue with heat dissipation.

Radiation fin thermistor abnormality

Radiation fin thermistor abnormality — Fin temp sensor error

The temperature sensor for the radiation fins is not working correctly. This impacts the unit's ability to manage its internal temperature.

Refrigerant shortage

Refrigerant shortage — Low on coolant

This indicates that the system is low on refrigerant. This can lead to reduced cooling/heating efficiency and potential damage to the compressor.

Room temperature thermistor error

Room temperature thermistor error — Room sensor fault

This error indicates a problem with the sensor that measures the room's temperature. Accurate temperature readings are crucial for the air conditioner's performance.

Safety device actuates frequently

Safety device actuates frequently — Fuse, breaker, or ELCB trips

A safety device like a fuse, circuit breaker, or earth leakage circuit breaker (ELCB) is repeatedly shutting off power. This indicates a potential electrical fault.

Setting changes

Beep — Setting changes

A single beep sound indicates that a setting has been successfully changed or confirmed via the user interface remote control.

Streamer unit error

Streamer unit error — Air purification system fault

This error relates to the Streamer air purification unit within the air conditioner. It suggests a problem with this specific component or its operation.

System Error code

System Error code — General system fault detected

This is a general error code indicating a problem within the air conditioning system. The specific cause requires further investigation.

System suddenly stops operating

System suddenly stops operating — Interrupted operation

The air conditioner stopped running unexpectedly during operation. This could be due to overheating, power fluctuations, or airflow blockage.

Temperature/humidity differs from other appliances

Temperature/humidity differs from other appliances — Reference value only

The temperature or humidity shown in the Daikin Online Controller app is different from readings on other devices. The app displays readings for the immediate surroundings of the unit only.

Unit does not operate at all

Unit does not operate at all — No power or response

The air conditioner shows no signs of operation. It may not be receiving power or there could be a system-wide issue.

Unit does not receive signals from user interface

Unit does not receive signals from user interface — Remote control lost

The indoor unit is not responding to commands from the user interface remote control. This could be due to battery issues, signal blockage, or interference.

User interface display is blank

User interface display is blank — Remote screen is dark

The LCD screen on the user interface remote control is completely blank. This usually indicates a power issue with the remote itself.

User interface operation switch not working

User interface operation switch not working well — Controls unresponsive

The buttons or controls on the user interface are not functioning correctly. This makes it difficult to operate the air conditioner.

Water leaks from unit

Water leaks from unit — Dripping water detected

Water is leaking from the air conditioner unit. This could be due to a blocked drain, condensation issues, or refrigerant line problems.

WLAN adapter not blinking

WLAN adapter not blinking — Connection issue

The LEDs on the WLAN adapter are not blinking, indicating it cannot connect to your network. You may not be able to control the unit remotely.

WLAN adapter not visible in Wi-Fi list (AP mode)

WLAN adapter not visible in Wi-Fi list — Access point not broadcasting

When in Access Point (AP) mode, the WLAN adapter is not appearing in the list of available Wi-Fi networks on your smart device. You cannot connect directly to the adapter.

WLAN adapter not visible on overview

WLAN adapter not visible on overview screen — Network not found

After setup, the WLAN adapter is not showing up on the home screen of the controller app. This means the app cannot find or communicate with the adapter.