Daikin FTXS09HVJU - Troubleshooting; Error Codes and Description

SiUS04-904 Troubleshooting
98 Service Diagnosis
4. Troubleshooting
4.1 Error Codes and Description
: Displayed only when system-down occurs.
Code
Indication
Description
Reference Page
09/12
Class
15/18/24
Class
System
00
Normal — —
U0
Refrigerant shortage 138 140
U2
Over-voltage detection 142 —
Low-voltage detection — 143
U4
Signal transmission error (between indoor and outdoor unit) 106 106
Indoor
Unit
A1
Indoor unit PCB abnormality 99 99
A5
Freeze-up protection control or high pressure
control
100 100
A6
Fan motor or related abnormality
AC Motor 102 —
DC Motor — 103
C4
Heat exchanger temperature thermistor
abnormality
105 105
C9
Room temperature thermistor abnormality 105 105
Outdoor
Unit
E5
OL activation (compressor overload) 108 108
E6
Compressor lock 109 110
E7
DC fan lock 111 111
E8
Input overcurrent detection 112 113
EA
Four-way valve abnormality 115 117
F3
Discharge pipe temperature control 119 120
F6
High pressure control in cooling 121 121
H6
Position sensor abnormality 123 124
H8
DC voltage/current sensor abnormality 125 —
CT or related abnormality — 126
H9
Outdoor air thermistor or related abnormality 128 128
J3
Discharge pipe temperature thermistor or related abnormality 128 128
J6
Heat exchanger temperature thermistor or related
abnormality
128 128
L3
Electrical box temperature rise 130 130
L4
Radiation fin temperature rise 132 132
L5
Output overcurrent detection 134 136
P4
Heat radiation fin thermistor or related abnormality 128 128