Daikin FTXS09DVJU - Troubleshooting; Error Codes and Description

Troubleshooting SiUS04-702
122 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
Insufficient gas 164 166
U2
Over-voltage detection 168 —
Low-voltage detection — 169
U4
Signal transmission error (between indoor and outdoor unit) 130 130
Indoor
Unit
A1
Indoor unit PCB abnormality 123 123
A5
Freeze-up protection control or high pressure
control
124 124
A6
Fan motor or related abnormality
AC Motor 126 —
DC Motor — 127
C4
Heat exchanger temperature thermistor
abnormality
129 129
C9
Room temperature thermistor abnormality 129 129
Outdoor
Unit
E5
OL activation (compressor overload) 132 132
E6
Compressor lock 133 134
E7
DC fan lock 135 135
E8
Input over current detection 136 137
EA
Four way valve abnormality 139 141
F3
Discharge pipe temperature control 143 144
F6
High pressure control in cooling 145 147
H6
Position sensor abnormality 149 150
H8
DC voltage/current sensor abnormality 151 —
CT or related abnormality — 152
H9
Outdoor air thermistor or related abnormality 154 154
J3
Discharge pipe temperature thermistor or related abnormality 154 154
J6
Heat exchanger temperature thermistor or related
abnormality
154 154
L3
Electrical box temperature rise 156 156
L4
Radiation fin temperature rise 158 158
L5
Output over current detection 160 162
P4
Heat radiation fin thermistor or related abnormality 154 154