Troubleshooting; Error Code Indication By Remote Controller - Daikin CTXU25G2V1B Service Manual

Troubleshooting

2. Troubleshooting
2.1

Error Code Indication by Remote Controller

Code Unit
Basic Failure Diagnosis
A1
A5
A6
Indoor
C4
C9
CC
E1
E5
E6
E7
Outdoor
E8
F3
F6
H0
H1
Humidifying unit Damper abnormality
H6
H8
H9
J3
J6
J8
Outdoor
J9
L3
L4
L5
P4
P9
PA
Humidifying unit
PH
U0
U2
System
U4
Outdoor
U7
System
UA
Indoor
100
Air conditioner does not run.
Air conditioner runs but does not get cooling (heating).
When operation starts, safety breaker works.
Air conditioner makes big noise and vibration.
Air does not humidified enough.
Indoor unit PCB abnormality
Freeze-up protection or high pressure control
Fan motor or related abnormality
Indoor heat exchanger thermistor abnormality
Room temperature thermistor abnormality
Humidity sensor abnormality
Outdoor unit PCB abnormality
OL activation (compressor overload)
Compressor lock
DC fan lock
Input overcurrent detection
Discharge pipe temperature control
High pressure control in cooling
Compressor sensor system abnormality
Position sensor abnormality
DC voltage / DC current sensor abnormality
Outdoor air thermistor abnormality
Discharge pipe thermistor abnormality
Outdoor heat exchanger thermistor abnormality
Liquid pipe thermistor abnormality
Gas pipe thermistor abnormality
Abnormal temperature in electrical box
Temperature rise in radiation fin
Output overcurrent
Radiation fin thermistor abnormality
Fan motor system abnormality / fan lock
Heater wire abnormality
Humidification fan outlet thermistor abnormality / abnormal heater
temperature
Insufficient gas
Over voltage protection (OVP) / low voltage protection (LVP)
Signal transmission error (indoor unit - outdoor unit)
Outdoor unit PCB abnormality or communication circuit abnormality
Signal transmission error on outdoor unit PCB
Incompatible power supply between indoor unit and outdoor unit
Incomplete setting for hose length
Description
SiBE12-908
* Various cases may be possible.
Reference page
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105
107
109
110
113
114
116
118
118
119
125
126
127
128
129
131
132
134
135
136
138
139
139
139
139
139
141
143
145
139
155
156
158
147
149
120
150
153
122
123
Service Diagnosis