Daikin FTX50GV1B Manuel de service Page 66

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Troubleshooting SiBE041029_A
56 Service Diagnosis
4. Troubleshooting
4.1 Error Codes and Description
: Displayed only when system-down occurs.
Error Codes Description
Reference
Page
System
00
Normal
U0
Refrigerant shortage 62
U2
Low-voltage detection or over-voltage detection 64
U4
Signal transmission error (between indoor unit and outdoor unit) 66
UA
Unspecified voltage (between indoor unit and outdoor unit) 69
Indoor
Unit
A1
Indoor unit PCB abnormality 57
A5
Freeze-up protection control or heating peak-cut control 58
A6
Fan motor (DC motor) or related abnormality 59
C4
Indoor heat exchanger thermistor or related abnormality 61
C9
Room temperature thermistor or related abnormality 61
Outdoor
Unit
E1
Outdoor unit PCB abnormality 70
E5
OL activation (compressor overload) 72
E6
Compressor lock 74
E7
DC fan lock 75
E8
Input overcurrent detection 76
EA
Four way valve abnormality 77
F3
Discharge pipe temperature control 79
F6
High pressure control in cooling 80
H0
Compressor system sensor abnormality 81
H6
Position sensor abnormality 83
H8
CT or related abnormality (RX50/60G2V1B, 71 class only) 86
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 93
P4
Radiation fin thermistor or related abnormality 88
U7
Signal transmission error on outdoor unit PCB
(RX50/60G2V1B, 71 class only)
68
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