Solving Problems Based On Error Codes - Daikin FTXF25D5V1B User Reference Manual

8 | Troubleshooting

8.2 Solving problems based on error codes

User reference guide
32
Fault diagnosis by user interface
If the unit runs into a problem, you can identify the fault by checking the error
code by the user interface. 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 user interface
1 Aim the user interface at the unit and press
Result: blinks in the temperature setting display section.
2 Aim the user interface at the unit and press
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
from the display if the button is NOT pressed within 1 minute.
System
Error code Description
Normal
Refrigerant shortage
Overvoltage detection
Signal transmission error (between indoor and outdoor unit)
Indoor/outdoor unit combination fault
Indoor unit
Error code Description
Indoor unit PCB abnormality
Freeze-up protection or high-pressure control
Fan motor (DC motor) abnormality
Room temperature thermistor abnormality
Outdoor unit
Error code Description
4-way valve abnormality
Outdoor unit PCB abnormality
Overload activation (compressor overload)
for about 5 seconds.
repeatedly until a continuous
for 5 seconds. The code will also disappear
FTXF20~42D5V1B + ATXF20~42D5V1B
Daikin room air conditioners
4D520466-13G – 2021.12