Aj" Indoor Unit: Malfunction Of Capacity Determination Device - Daikin R410As Service Manual

Troubleshooting by Indication on the Remote Controller
" AJ " Indoor Unit:
2.8
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:
1. When the capacity code is not contained in the PC board's memory, and the capacity setting
Decision
Conditions
2. When a capacity that doesn't exist for that unit is set.
!
Supposed
!
Causes
Troubleshooting
166
Malfunction of Capacity Determination
adaptor is not connected.
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
The indoor
unit is a model that
requires installation of a
capacity setting adaptor
when replacing the
PC board.
YES
NO
NO
Si39-302
Replace the indoor unit PC board.
Replace the indoor unit PC board.
Install a capacity setting adaptor.
(V2783)
Troubleshooting