Daikin FTXS20K3V1B - Troubleshooting; Error Codes and Description

Troubleshooting SiBE041134EB
60 Service Diagnosis
4. Troubleshooting
4.1 Error Codes and Description
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: Displayed only when system-down occurs.
Error Codes Description
Reference
Page
System
00
Normal —
U0
Refrigerant shortage 66
U2
Low-voltage detection or over-voltage detection 68
U4
Signal transmission error (between indoor unit and outdoor unit) 70
UA
Unspecified voltage (between indoor unit and outdoor unit) 72
Indoor
Unit
A1
Indoor unit PCB abnormality 61
A5
Freeze-up protection control / heating peak-cut control 62
A6
Fan motor (DC motor) or related abnormality 63
C4
Indoor heat exchanger thermistor or related abnormality 65
C9
Room temperature thermistor or related abnormality 65
Outdoor
Unit
E1
Outdoor unit PCB abnormality 73
E5
OL activation (compressor overload) 75
E6
Compressor lock 77
E7
DC fan lock 78
E8
Input overcurrent detection 79
EA
Four way valve abnormality 80
F3
Discharge pipe temperature control 82
F6
High pressure control in cooling 83
H0
Compressor system sensor abnormality 84
H6
Position sensor abnormality 85
H8
DC voltage / current sensor abnormality 87
H9
Outdoor temperature thermistor or related abnormality 88
J3
Discharge pipe thermistor or related abnormality 88
J6
Outdoor heat exchanger thermistor or related abnormality 88
L3
Electrical box temperature rise 90
L4
Radiation fin temperature rise 91
L5
Output overcurrent detection 92
P4
Radiation fin thermistor or related abnormality 88