Daikin CTX Series Service Manual page 60

DAMA-SM-21-003
 Error Code Definition
Error Code
00
A1
A3
A5
A6
AH
C4
C5
C7
C9
E1
E3
E4
E5
E6
E7
E8
E9
EA
F3
F6
H0
H3
H6
H7
H8
H9
J1
J3
J5
J6
J7
J8
J9
L1
L3
L4
L5
L8
L9
LC
P1
P4
PJ
U0
U2
U4
U7
UA
UF
UH
Service Diagnosis
Checklist

Normal

Indoor PCB error
Drain pump abnormal

Antifreeze

Indoor fan motor abnormal
Electrical air cleaner abnormal

Indoor heat exchanger (1) thermistor short / open
Indoor heat exchanger (2) thermistor short / open
Louver limit switch error

Indoor room thermistor short / open

Outdoor PCB error
High pressure protection
Low pressure protection

Compressor motor lock / compressor overload

Compressor start-up error

Outdoor DC fan motor lock

AC input overcurrent
EXV error

4 way valve error

Discharge pipe overheat

Heat exchanger overheat

Compressor sensor system error
High pressure switch error

Compressor feedback detection error
Fan motor overload / overcurrent / sensor abnormal
AC current sensor error

Outdoor air thermistor short / open
Pressure sensor error

Compressor discharge pipe thermistor short / open / misplaced
Suction pipe thermistor short / open

Outdoor heat exchanger thermistor short / open
Subcooling heat exchanger thermistor short / open
Liquid pipe thermistor short / open
Gas pipe thermistor short / open
Inverter outdoor PCB error

Outdoor control box overheat

Heat sink overheat

IPM error / IGBT error
Inverter compressor overcurrent
Compressor overcurrent prevention
Communication error (outdoor control PCB and inverter PCB)
Open phase or voltage unbalance

Heat sink thermistor short / open
Capacity setting error
Insufficient gas

DC voltage out of range

Communication error
Communication error (outdoor control PCB and IPM PCB)
Installation error (wrong combination of ID and OD units /

wrong or defective ID/OD PCB installed)
Piping & wiring installation mismatch / wrong wiring / insufficient gas

Malfunction of system
Meaning
Troubleshooting
55