Daikin Mini Split Error Codes List

By | May 17, 2023

Daikin Mini Split Error Code List
If you have an error code on a Daikin mini split, the problem can be found by using a chart with the codes listed.

Sometimes Daikin unit will not be working, and no code displays, in which case the remote control can be used to find the error code.

To use the remote control to find an error code, press the Cancel button on the remote control for 5-6 seconds until 00 is shown on the display.

After the 00 flashes, the Cancel button will cycle through the codes giving short beeps for non-errors and a long beep for the problem error.

Read here for how to find a Daikin error code using the remote control.

Below are the error codes on the left and the malfunction to the right.

For example, for an E1 error code, it would be a defective outdoor PCB.

The chart also gives possible causes; for example, the E1 could be a defective outdoor PCB or a defective connection of the inside or outside relay wires.

Daikin Mini Split Error Codes List
Daikin Mini Split Error Codes Page 1

Daikin Mini Split Error Codes Page 2.2

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Daikin Mini Split Error Codes Page 6

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Daikin Mini Split Error Code List and Meanings

Error CodeStatus
00NORMAL
U0REFRIGERANT SHORTAGE
U2OVER-VOLTAGE DETECTION
U4SIGNAL TRANSMISSION ERROR (BETWEEN INDOOR AND OUTDOOR UNIT)
A1INDOOR UNIT PCB ABNORMALITY
A5FREEZE-UP PROTECTION OR HEATING PEAK-CUT CONTROL
A6FAN MOTOR (DC MOTOR) ABNORMALITY
C4INDOOR HEAT EXCHANGER THERMISTOR ABNORMALITY
C7FRONT PANEL OPEN /CLOSE FAULT
C9ROOM TEMPERATURE THERMISTOR ABNORMALITY
EAFOUR WAY VALVE ABNORMALITY
E1OUTDOOR UNIT PCB ABNORMALITY
E5OL ACTIVATION (COMPRESSOR OVERLOAD)
E6COMPRESSOR LOCK
E7DC FAN LOCK
F3DISCHARGE PIPE TEMPERATURE CONTROL
H0COMPRESSOR SYSTEM SENSOR ABNORMALITY
H6POSITION SENSOR ABNORMALITY
H8DC VOLTAGE / CURRENT SENSOR ABNORMALITY
H9OUTDOOR TEMPERATURE THERMISTOR ABNORMALITY
J3DISCHARGE PIPE THERMISTOR ABNORMALITY
J6OUTDOOR HEAT EXCHANGER THERMISTOR ABNORMALITY
L4RADIATION FIN TEMPERATURE RISE
L5OUTPUT OVERCURRENT DETECTION
P4RADIATION FIN THERMISTOR ABNORMALITY

How to Troubleshoot a Daikin Mini Split

Troubleshooting a Daikin mini split starts with knowing what part of the unit had malfunctioned.

To know which part has malfunctioned, the error code on the unit will need to be looked up on an error code chart.

If there is no code on the unit, the remote control can be used to also pull up errors.

Once the problem is known, more specific causes and fixes can be done to get the system back up and working.

Daikin mini splits are good units that will work for many years with no issues, but sometimes things can go wrong.

When they do go wrong, finding the code and looking it up chart is the first step to solving the problem.

There are many components inside a unit with a code that will display when that component goes bad or fails.

Have you had an issue with a Daikin mini split? Let us know your thoughts below..

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