Troubleshooting for the Daikin Emura

Before making an inquiry or a request for repair, please check the following. If the problem persists, please contact us!

no signNot a Problem

magnify glassDouble Check Before Requesting Repairs

The air conditioner does not operate

Case

   Description/What to Check
Multi-monitor lamp is off.

 

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  • Has the circuit breaker been tripped or the fuse blown?  
  • Is there a power failure?  
  • Are batteries set in the remote controller?
  • Is the timer setting correct?
Multi-monitor lamp is blinking. magnify glass
  • Turn off the power with the circuit breaker and restart operation with the remote controller. If the multi-monitor lamp is still blinking, check the error code and consult your dealer. 

 

The air conditioner suddenly stops operating

Case   Description / what to check
Multi-monitor lamp is on. no sign
  • To protect the system, the air conditioner may stop operating after sudden large voltage fluctuations. It automatically resumes operation in about 3 minutes.
Multi-monitor lamp is blinking. magnify glass
  • Are the air filters dirty? Clean the air filters.
  • Is there anything blocking the air inlet or air outlet of the indoor unit or outdoor unit?
  • Stop operation and after turning off the circuit breaker, remove the obstruction. Then restart operation with the remote controller. If the multi-monitor lamp is still blinking, check the error code and consult your dealer. 
  • Are operation modes all the same for indoor units connected to outdoor units in the multi system? If not, set all indoor units to the same operation mode and confirm that the lamps. Moreover, when the operation mode is in AUTO, set all indoor unit operation modes to COOL or HEAT for a moment and check again that the lamps are normal. If the lamps stop blinking after the above steps, there is no malfunction.

 

The air conditioner does not stop operating

Case   Description / what to check
The air conditioner continues operating even after operation is stopped. no sign

Immediately after the air conditioner is stopped

  • The outdoor unit fan continues rotating for about another 1 minute to protect the system. „    

While the air conditioner is not in operation    

  • When the outdoor temperature is high, the outdoor unit fan may start rotating to protect the system. 

 

The room does not cool down / warm up

Case   Description / what to check
Air does not come out. no sign

In HEAT operation  

  • The air conditioner is warming up. Wait for about 1 to 4 minutes.  
  • During defrosting operation, hot air does not fl ow out of the indoor unit. „    

When the air conditioner operates immediately after the circuit breaker is turned on   

  • The air conditioner is preparing to operate. Wait for about 3 to 20 minutes.

 

The room does not cool down / warm up

Case   Description / what to check
Air does not come out / Air comes out. magnify glass

Is the airflow rate setting appropriate? 

  • Is the airflow rate setting low, such as “Indoor unit quiet” or “Airflow rate 1”? Increase the airflow rate setting. „    

Is the set temperature appropriate? „    

Is the adjustment of the airflow direction appropriate?
Air comes out. magnify glass
  • Is there any furniture directly under or beside the indoor unit? •    
  • Is the air conditioner in ECONO operation or OUTDOOR UNIT QUIET operation?    
  • Is the air filter dirty? 
  • Is there anything blocking the air inlet or air outlet of the indoor unit or outdoor unit? 
  • Is a window or door open?
  • Is an exhaust fan turning?

 

Mist comes out

Case   Description / what to check
Mist comes out of the indoor unit. no sign
  • This happens when the air in the room is cooled into mist by the cold airflow during COOL or other operation.

 

Remote controller

Case   Description / what to check
The unit does not receive signals from the remote controller or has a limited operating range. no sign The batteries may be exhausted. 
  • Replace both batteries with new dry batteries AAA.LR03 (alkaline). 
  • Signal communication may be disabled if an electronic-starter-type fluorescent lamp (such as inverter-type lamps) is in the room. Consult your dealer if that is the case.  
  • The remote controller may not function correctly if the transmitter is exposed to direct sunlight.
LCD is faint, is not working, or the display is erratic. no sign The batteries may be exhausted. 
  • Replace both batteries with new dry batteries AAA.LR03 (alkaline).
Other electric devices start operating. no sign
  • If the remote controller activates other electric devices, move them away or consult your dealer.

 

Air has an odor

Case   Description / what to check
The air conditioner gives off an odor. no sign
  • The room odor absorbed in the unit is discharged with the airflow. 
    We recommend you to have the indoor unit cleaned. Please consult your dealer.

 

Upper and lower front panels

Case   Description / what to check
Upper and lower front panels do not open. (Multi-monitor lamp is blinking.) magnify glass
  • Is there something caught in the upper and lower front panels?
  • Remove the object and attempt operation again using the remote controller.
    If the upper and lower front panels still do not open and the multi-monitor lamp is still blinking, consult your dealer where you bought the air conditioner.
Upper front panel does not close completely. magnify glass
  • Are the upper front panel locks set appropriately?
If the upper and lower front panels are closed while the air conditioner is in operation, the air conditioner will stop operating and the multi-monitor lamp will blink. no sign
  • Restart the air conditioner after stopping the operation of the air conditioner with the remote controller.

 

Others

Case   Description / what to check
The air conditioner suddenly starts behaving strangely during operation. magnify glass
  • The air conditioner may malfunction due to lightning or radio.
  • If the air conditioner malfunctions, turn off the power with the circuit breaker and restart the operation with the remote controller.
HEAT operation cannot be selected, even though the unit is heat pump model. magnify glass
  • Check that the jumper (J8) has not been cut. If it has been cut, contact your dealer.
The ON/OFF TIMER does not  operate according to the settings. no sign
  • Check if the ON/OFF TIMER and the WEEKLY TIMER are set to the same time. Change or deactivate the settings in the WEEKLY TIMER.

 

Notes on the operating conditions

If operation continues under any conditions other than those listed in the table,    

  • A safety device may activate to stop the operation. (With a multi connection in COOL operation, the safety device may work to stop the operation of the outdoor unit only.)
  • Dew may form on the indoor unit and drip from it when COOL or DRY operation is selected.
Mode Operating Conditions
Cool/Dry

Outdoor temperature:  

  • [MXS models]: 14-115°F (–10-46°C)
  • [MXL models]: 14-115°F (–10-46°C)
  • [RX models]: 50-115°F (10-46°C)

Indoor temperature: 64-90°F (18-32°C)
Indoor humidity: 80% max.

Heat

Outdoor temperature:  

  • [MXS models]: 5-75°F (–15-24°C)
  • [MXL models]: –13-75°F (–25-24°C)
  • [RX models]: 5-75°F (–15-24°C)

Indoor temperature: 50-86°F (10-30°C)

 

Contact us immediately if:

When an abnormality (such as a burning smell) occurs, stop operation and turn off the circuit breaker.

  • Continued operation in an abnormal condition may result in problems, electric shock or fire. 
  • Consult the dealer where you bought the air conditioner.

Do not attempt to repair or modify the air conditioner by yourself.

  • Incorrect work may result in electric shock or fire. 
  • Consult the dealer where you bought the air conditioner.

If one of the following symptoms takes place, call us immediately:

  • The power cord is abnormally hot or damaged.  
  • An abnormal sound is heard during operation.   
  • The circuit breaker cuts off the operation frequently.
  • A switch or a button often fails to work properly.   
  • There is a burning smell.
  • Water leaks from the indoor unit.

After a power failure

  • The air conditioner automatically resumes operation in about 3 minutes. Please wait for a while.

„Lightning  

  • If there is a risk lightning could strike in the neighborhood, stop operation and turn off the circuit breaker to protect the system.

Fault diagnosis by remote controller

  1.  When CANCEL is held down for about 5 seconds, "00” blinks in the temperature display section.
  2.  Press CANCEL repeatedly until a long beep is produced.
Emura remote
CODE MEANING
SYSTEM  
00 NORMAL
U0 REFRIGERANT SHORTAGE
U2 OVER-VOLTAGE DETECTION
U4 SIGNAL TRANSMISSION ERROR (BETWEEN INDOOR AND OUTDOOR UNIT)
INDOOR UNIT  
A1 INDOOR UNIT PCB ABNORMALITY
A5 FREEZE-UP PROTECTION OR HEATING PEAK-CUT CONTROL
A6 FAN MOTOR (DC MOTOR) ABNORMALITY
C4 INDOOR HEAT EXCHANGER THERMISTOR ABNORMALITY
C7 FRONT PANEL OPEN /CLOSE FAULT
C9 ROOM TEMPERATURE THERMISTOR ABNORMALITY
OUTDOOR UNIT  
EA FOUR WAY VALVE ABNORMALITY
E1 OUTDOOR UNIT PCB ABNORMALITY
E5 OL ACTIVATION (COMPRESSOR OVERLOAD)
E6 COMPRESSOR LOCK
E7 DC FAN LOCK
F3 DISCHARGE PIPE TEMPERATURE CONTROL
H0 COMPRESSOR SYSTEM SENSOR ABNORMALITY
H6 POSITION SENSOR ABNORMALITY
H8 DC VOLTAGE / CURRENT SENSOR ABNORMALITY
H9 OUTDOOR TEMPERATURE THERMISTOR ABNORMALITY
J3 DISCHARGE PIPE THERMISTOR ABNORMALITY
J6 OUTDOOR HEAT EXCHANGER THERMISTOR ABNORMALITY
L4 RADIATION FIN TEMPERATURE RISE
L5 OUTPUT OVERCURRENT DETECTION
P4 RADIATION FIN THERMISTOR ABNORMALITY