If you're looking for help fixing your Daikin Air Conditioner, look no further! Our comprehensive Daikin Air Conditioner repair guide will explain common issues, provide tips, and maybe show you how to repair your appliance.

Daikin manufactures appliances that homeowners have come to trust. Even a trustworthy appliance requires occasional maintenance or repair, however. If you’re in need of Daikin appliance repair from experienced professionals, your local Appliance Helper can help.

Air conditioning operation stops unexpectedly, and filter cleaning operation starts. (Then, the air conditioning operation restarts.) 
When the auto filter cleaning setting is ON (default), the air conditioning operation stops after 24 hours of air conditioning operation (cooling mode, dehumidifying mode, heating mode, air purifying mode, or ventilation mode) to activate the automatic filter cleaning operation. After the cleaning operation is complete, the air conditioning operation resumes. 

Filter cleaning operation does not stop. 
The air filter is returning to normal position. Please wait for about 1 to 3 minutes. 

The air conditioner continues to operate even when the dehumidifying, dry cooling, or cooling operation is turned off. 
Check if the mould proof automatic setting is set to ON. If the setting is ON, mould proof operation is activated after dehumidifying, dry cooling, or cooling operation stops. 

The indoor unit produces an abnormal noise during operation. 
Stop operation, unplug the power cord or turn off the circuit breaker, and contact the place of purchase. 

A clicking sound is produced. 
A clicking sound may be produced when the refrigerant control valve or electric component operates. 

A buzzing sound is produced. 
A buzzing sound may be produced when the flap moves. 

A rattling/creaking sound is produced. 
A rattling/creaking sound may be produced when the flap position is adjusted during operation startup or stopping. 

A bubbling sound is produced. 
When the room is completely closed and the ventilation fan is operating or when strong winds are blowing outside, outdoor air can enter the drain hose and cause a bubbling sound. This phenomenon tends to occur in a well-sealed house or apartment. 

A soft rumbling sound is produced. 
Check if the unit is operating in ventilation (fan) mode. The unit can produce a soft rumbling sound when it is operating in ventilation (fan) mode. 

A strange sound is produced during humidifying or ventilation operation. 
Hissing sound. The hissing sound is caused by the discharge of humidified or ventilated air. A different sound may be produced depending on the outdoor temperature or humidity. 
Bubbling sound. The bubbling sound comes from inside of the humidifying hose. When the outside humidity is low, manual mould proof operation may improve the situation. If that does not produce any improvement, contact place of purchase. 

A strange sound is produced during humidifying operation. 
The sound is produced when the humidifying fan starts or stops operating. 
Sound generated outside may be transmitted to the air conditioner unit. 

A hissing or crackling sound is produced. 
The hissing or crackling sound is produced by Streamer discharge. It does not denote a malfunction. 

Abnormal noise is produced during filter cleaning operation. 
Stop operation, unplug the power cord or turn off the circuit breaker, and contact the place of purchase. 

The air filter gets stuck or produces a large sound during filter cleaning operation. 
Check if the air filter is deformed. If so, contact the place of purchase. 
Check if the air filter, photocatalytic air purifying/deodorizing filter and dust box are installed correctly. 

The indoor unit produces a sound after humidifying operation stops. 
After humidifying operation stops, the humidifying fan continues operating for about 3 minutes to prevent equipment damage. 

There is a burnt odor from the air conditioner. 
Stop operation, unplug the power cord or turn off the circuit breaker, and contact the place of purchase. 

The air conditioner emits an unpleasant odor. 
The indoor unit sometimes discharges the room odor remaining inside the unit. 
Since a very small amount of ozone is generated during the Streamer air purifying operation, you may notice some odor at the air outlet. The amount of discharged ozone is extremely small and causes no health hazards. 
If mould proof operation is performed and there is an increase in humidity, this may produce an odor. 

Can an ordinary cleaning spray available in a store be used to clean the inside of the air conditioner? 
Do not use a commercial cleaning agent. Commercial cleaners may cause adverse effects on the resin parts of the heat exchanger or other internal components. In the worst case, problems such as water leaks can occur. 

What should I do when I will not use the air conditioner for an extended period of time? 
(1) Operate the air conditioner in mould proof operation on a sunny day to let the inside of the unit dry thoroughly. 
(2) After the cleaning operation stops, unplug the power cord or turn off the dedicated circuit breaker for the air conditioner. 
(3) Remove the batteries from the remote controller. 

How often should I clean the air filters? 
We recommend cleaning the air filters every 2 weeks. Wash the filters with water or clean them with a vacuum cleaner. (See the manual for details.) For heavy soiling, wash the filters with a neutral detergent diluted with tepid water and let the filters dry in a shady place. 

I lost the remote controller. Can I use the air conditioner without it? 
Operation can be started by pressing the "ON/OFF" button on the main unit. In this case, operation mode and fan speed are set to "automatic." 

The remote controller display is not clear, and the remote controller does not work well. 
The batteries are running low. Replace both batteries (2) with new ones. Estimated life for replacement battery is about 1 year. Use alkaline batteries. 

The remote controller display is always illuminated. Can I turn it off? 
The display on the remote controller cannot be turned off. 

When the remote controller is operated, it also causes other electric products, such as the TV, to operate. 
If other electric products operate when the remote controller is used, move those products farther away from the remote controller or contact the place of purchase. 

The indoor unit does not receive remote controller signals, or its signal sensitivity is very poor. The display on the remote controller has faded, does not show anything, or changes by itself. 
The indoor unit may not receive remote controller signals properly in a room with fluorescent lamps on electronic ballasted lighting fixtures (such as inverter fluorescent lamps), or with LCD or plasma televisions. If this happens, contact the place of purchase. 
If the transceiver is exposed to direct sunlight, the indoor unit may not operate properly. 
Worn batteries can also cause erratic operation. Replace all batteries with new batteries. 

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