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Troubleshooting
Installer reference guide
51
CTXM-A, FTXM-A, ATXM-A
Daikin room air conditioner
4P518023-17P – 2023.06
13 Troubleshooting
13.1 Solving problems based on error codes
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
for about
5 seconds.
Result:
blinks in the temperature setting display section.
2
Aim the wireless remote control at the unit and press
repeatedly until
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
for 5 seconds. The code will also
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