Solving Problems Based On Error Codes - Daikin ATXM20A2V1B User Reference Manual

9.2 Solving problems based on error codes

ATXM-A
Daikin room air conditioner
4P518786-13K – 2023.06
Fault diagnosis by the wireless remote control
If the unit runs into a problem, you can identify the fault by checking the error
code by the wireless remote control. It is important to understand the problem
and take measures before resetting the error code. This should be done by a
licensed installer or your local dealer.
INFORMATION
See the service manual for:
▪
The complete list of error codes
▪
A more detailed troubleshooting guideline for each error
To check the error code by the wireless remote control
1 Aim the wireless remote control at the unit and press
5 seconds.
Result: blinks in the temperature setting display section.
2 Aim the wireless remote control at the unit and press
a continuous beep is heard.
Result: The code is now displayed on the display.
INFORMATION
▪
A short beep and 2 consecutive beeps indicate non-corresponding codes.
▪
To cancel the code display, hold
disappear from the display if the button is NOT pressed within 1 minute.
System
Error code Description
Normal
Refrigerant shortage
Overvoltage detection
Malfunction of transmission
Signal transmission error (between indoor and outdoor unit)
Indoor unit
Error code Description
Indoor unit PCB abnormality
Freeze-up protection or high-pressure control
Fan motor (DC motor) abnormality
Indoor heat exchanger thermistor abnormality
Room temperature thermistor abnormality
Outdoor unit
Error code Description
4-way valve abnormality
9 Troubleshooting
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for about
repeatedly until
for 5 seconds. The code will also
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