Daikin minisplit error codes:
A5, E7, F3, F6, L3, L4, L5, U4, E6, H6, H0, A6, U0, C7, A3, H8, H9, C9, CC, C4, C5, CX, J3, J6, J8, E5, A1, E1, UA, U3, UF, UH, P4, H7, U2, EA, AH, FA, E3, H3, F8, A0
A0 - External protection device activated
A1 - Indoor unit PCB abnormality
A3 - Drain Level Control System Abnormality
A5 - Freeze-up protection control/heating peak-cut control
A6 - Fan motor (DC motor) or related abnormality
AH - Malfunction of dust collector of air cleaner
C4 - Indoor heat exchanger thermistor malfunction
C5 - Indoor heat exchanger thermistor malfunction
C7 - Front panel driving motor fault
C9 - Room temperature thermistor abnormality
CX - Malfunction of discharge air thermistor
E1 - Outdoor unit PCB abnormality
E3 - Actuation of high pressure switch (HPS)
E5 - OL activation (compressor overload)
E6 - Compressor lock
E7 - DC fan lock
EA - Four way valve abnormality
F3 - Discharge pipe temperature control
F6 - High pressure control in cooling
F8 - ?
FA - ?
H0 - Compressor system sensor abnormality
H3 - Malfunction of high pressure switch (HPS)
H6 - Position sensor abnormality
H7 - Malfunction of outdoor unit fan motor signal
H8 - DC voltage/current sensor abnormality
H9 - Outdoor air thermistor malfunction
J3 - Discharge pipe thermistor malfunction
J6 - Outdoor heat exchanger thermistor malfunction
J8 - Liquid pipe thermistor malfunction
L3 - Electrical box temperature rise
L4 - Radiation fin temperature rise
L5 - Output overcurrent detection
P4 - Radiation fin thermistor malfunction
U0 - Refrigerant shortage
U2 - Low-voltage detection or over-voltage detection
U3 - Check operation not executed or transmission error
U4 - Signal transmission error (between indoor and outdoor unit)
UA - Unspecified voltage (between indoor and outdoor unit)
UF - System is not set yet
UX - Malfunction of system