Troubleshooting; Error Codes And Description - Daikin FTX-N Series Service Manual

Troubleshooting

4. Troubleshooting

4.1

Error Codes and Description


59
Error Codes
System
Normal
00
Low-voltage detection or over-voltage detection
U2
Signal transmission error (between indoor unit and outdoor unit)
U4
Mismatching of indoor unit and outdoor unit
UA
Indoor
Indoor unit PCB abnormality
A1
Unit
Freeze-up protection control/heating peak-cut control
A5
Indoor fan motor (DC motor) or related abnormality
A6
Indoor heat exchanger thermistor or related abnormality
C4
Room temperature thermistor or related abnormality
C9
Outdoor
Outdoor unit PCB abnormality
E1
Unit
OL activation (compressor overload)
E5
Compressor lock
E6
DC fan lock (outdoor fan)
E7
Input overcurrent detection
E8
Four way valve abnormality
EA
Discharge pipe temperature control
F3
High pressure control in cooling
F6
System shutdown due to compressor internal temperature
F8
abnormality
Compressor system sensor abnormality
H0
Position sensor abnormality
H6
CT or related abnormality
H8
Outdoor temperature thermistor or related abnormality
H9
Discharge pipe thermistor or related abnormality
J3
Outdoor heat exchanger thermistor or related abnormality
J6
Electrical box temperature rise
L3
Radiation fin temperature rise
L4
Output overcurrent detection
L5
Radiation fin thermistor or related abnormality
P4
Signal transmission error on outdoor unit PCB
U7
: Displayed only when system-down occurs.
Description
SiUS041638EA
Reference
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Service Diagnosis