Troubleshooting; Indoor Units - Daikin FTKS20D3VMW Service Manual

Troubleshooting

5. Troubleshooting

5.1

Indoor Units

- : Not used for troubleshooting
∗ : Varies depending on the cases.
Indication on the
remote control
00
Indoor unit in normal condition (Conduct a diagnosis of the outdoor unit.)
A1
Indoor unit PCB abnormality
A5
Freeze-up protection control or high pressure control (heat pump model only)
Fan motor or related
A6
abnormality
C4
Heat exchanger thermistor or related abnormality
C7
Front panel open / close fault (FTXG-E series, CTXG-E series)
C9
Room temperature thermistor abnormality
U4
Signal transmission error (between indoor and outdoor units)
UA
Unspecified voltage (between indoor and outdoor units)
234
Description of the Fault
AC motor (Wall : 20~35 C series, Duct, Floor / Ceiling)
DC motor (Wall : 20~50 D, E series, Floor)
SiENBE12-713
Details of fault
(Refer to the
indicated page.)
—
236
237
239
240
242
243
242
244
246
Service Diagnosis