13 | Troubleshooting
Installer reference guide
52
FTXJ-A(W)(S)(B)
Daikin room air conditioner
4P518023-12K – 2022.05
Position Error
code
Description
4 F3 Outdoor unit: Malfunction of discharge pipe temperature
5 F6 Outdoor unit: Abnormal high pressure in cooling
6 L3 Outdoor unit: Electrical box temperature rise problem
7 L4 Outdoor unit: Malfunction of inverter radiating fin temperature
rise
8 L5 Outdoor unit: Inverter instantaneous overcurrent
9 U4 Indoor/outdoor unit communication problem
10 E6 Outdoor unit: Compressor startup defect
11 H6 Outdoor unit: Malfunction of position detection sensor
12 H0 Outdoor unit: Voltage/current sensor problem
13 A6 Indoor unit fan motor abnormality
14 U0 Outdoor unit: Shortage of refrigerant
15 C7 Indoor unit: Opening or closing front panel error
16 A3 Indoor unit: Drain level control system abnormality
17 H8 Outdoor unit: Malfunction of compressor input system
18 H9 Outdoor unit: Malfunction of outdoor air thermistor
19 C9 Room thermistor abnormality
20 CC Humidity sensor abnormality
21 C4 Heat exchanger temperature sensor problem
22 C5 Gas pipe thermistor for heat exchanger problem
23 J3 Outdoor unit: Malfunction of discharge pipe thermistor
24 J6 Outdoor unit: Malfunction of heat exchanger thermistor
25 J8 Refrigerant circuit thermistor problem
26 E5 Outdoor unit: Overheat of inverter compressor motor
27 A1 PCB abnormality
28 E1 Outdoor unit: PCB defect
29 UA Indoor unit, outdoor unit mismatching problem
30 U3 Check operation not executed or transmission error
31 UH Malfunction of system
32 P4 Outdoor unit: Malfunction of radiating fin temperature sensor
33 H7 Outdoor unit: Malfunction of outdoor unit fan motor signal
34 U2 Outdoor unit: Defect of power supply voltage
35 EA Outdoor unit: Cool/heat switchover problem
36 AH Indoor unit: Streamer unit abnormality
37 FA Outdoor unit: Abnormal high pressure actuation of high
pressure switch
38 E3 Outdoor unit: Actuation of high pressure switch
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