Troubleshooting; Indoor Units - Daikin D-Series Service Manual

Si12-619A

5. Troubleshooting

5.1

Indoor Units

- : Not used for troubleshooting
∗
Indication on the
remote controller
00
A1
A5
A6
C4
C7
C9
U4
UA
Service Diagnosis
: Varies depending on the cases.
Indoor unit in normal condition (Conduct a diagnosis of the
outdoor unit.)
Indoor unit PCB abnormality
Freeze-up protection control or high pressure control (heat pump
model only)
Fan motor or related abnormality
Heat exchanger thermistor or related abnormality
Shutter drive motor / shutter limit switch abnormality
Room temperature thermistor abnormality
Signal transmission error (between indoor and outdoor units)
Unspecified voltage (between indoor and outdoor units)
Description of the Fault
AC motor
DC motor

Troubleshooting

Details of fault
(Refer to the
indicated page.)
—
211
212
214
215
217
218
217
219
221
209