Aj" Indoor Unit: Malfunction Of Capacity Determination Device - Daikin VRV III RXYQ5-54PY1 Service Manual

Troubleshooting by Indication on the Remote Controller
"AJ" Indoor Unit:
3.8
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 PC board, and whether the value is normal or abnormal
Malfunction
is determined.
Detection
Malfunction Operation and:
When the capacity code is not contained in the PC board's memory, and the capacity setting
Decision
adaptor is not connected.
Conditions
Supposed
Causes
Troubleshooting
230
Malfunction of Capacity Determination
You have forgotten to install the capacity setting adaptor.
Defect of indoor unit PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
The indoor
unit PC board was replaced
with a replacement
PC board.
YES
Was the
capacity setting
adapter mounted when
replacing the
PC board?
NO
NO
YES
Si34-601A
Replace the indoor unit PC board.
Replace the indoor unit PC board.
Install a capacity setting adaptor.
(V2783)
Troubleshooting