Daikin VRVIII-S, Service Manual

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Troubleshooting by Indication on the remote control SiENBE34-703
132 Troubleshooting
3.8 “
AJ
” Indoor Unit: Malfunction of Capacity Determination
Device
remote control
display
AJ
Applicable
Models
All indoor unit models
Method of
Malfunction
Detection 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
is determined.
Malfunction
Decision
Conditions Operation and:
1. When the capacity code is not contained in the PC board’s memory, and the capacity setting
adapter is not connected.
2. When a capacity that doesn’t exist for that unit is set.
Supposed
Causes
!
You have forgotten to install the capacity setting adapter.
! Defect of indoor unit PC board
Troubleshooting
(V2783)
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Caution
Install a capacity setting adaptor.
Replace the indoor unit PC board.
Replace the indoor unit PC board.
The indoor unit is a
model that requires
installation of a capacity
setting adaptor when
replacing the PC board.
The indoor unit PC
board was
replaced with a
replacement PC
board.
NO
NO
YES
YES