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

Troubleshooting by Indication on the remote control
3.8 "AJ " Indoor Unit: Malfunction of Capacity Determination
Device
AJ
remote control
display
Applicable
All indoor unit models
Models
Method of
Capacity is determined according to resistance of the capacity setting adapter 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:
Decision 1. When the capacity code is not contained in the PC board's memory, and the capacity setting
Conditions
2. When a capacity that doesn't exist for that unit is set.
Supposed
! You have forgotten to install the capacity setting adapter.
Causes ! Defect of indoor unit PC board
Troubleshooting
132
adapter is not connected.
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
The indoor unit is a
model that requires
installation of a capacity
setting adaptor when
replacing the PC board.
YES
NO
NO
SiENBE34-703
Replace the indoor unit PC board.
Replace the indoor unit PC board.
Install a capacity setting adaptor.
(V2783)
Troubleshooting