Aj" Indoor Unit: Malfunction Of Capacity Determination Device - Daikin RTSQ20PY1 Service Manual

Troubleshooting by Indication on the Remote Controller
AJ
4.8 " " Indoor Unit: Malfunction of Capacity Determination
Device
AJ
Remote
Controller
Display
Applicable All indoor unit models
Models
Method of Capacity is determined according to resistance of the capacity setting adaptor and the memory
inside the IC memory on the indoor unit PCB, and whether the value is normal or abnormal is
Malfunction
determined.
Detection
Malfunction When the capacity code is not saved to the PCB, and the capacity setting adaptor is not
connected.
Decision
When a capacity that does not exist for that unit is set.
Conditions
Supposed
Causes
Troubleshooting
237
The capacity setting adaptor was not installed.
Defect of indoor unit PCB
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
The indoor unit
PCB was replaced
with a spare PCB.
YES
The capacity
setting adaptor
need to be installed
when replacing the
PCB.
YES
NO
NO
SiBE31-801_C
Replace the indoor unit PCB.
Replace the indoor unit PCB.
Install a capacity setting adaptor.
Troubleshooting