Aj" Indoor Unit: Malfunction Of Capacity Determination Device - Daikin FCQ18PVJU Service Manual

Troubleshooting by Indication on the Remote Controller
AJ
3.8 " " 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
Malfunction inside the IC memory on the indoor unit P.C.B., and whether the value is normal or abnormal is
determined.
Detection
Malfunction
Operation and:
Decision 1. When the capacity code is not contained in the P.C.B.'s memory, and the capacity setting
Conditions
2. When a capacity that doesn't exist for that unit is set.
 You have forgotten to install the capacity setting adaptor.
Supposed
 Defect of indoor unit P.C.B.
Causes
Troubleshooting
95
adaptor is not connected.
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector, or parts could be damaged.
The indoor
unit P.C.B. was replaced
with a replacement
P.C.B.
YES
The indoor
unit is a model that
requires installation of a
capacity setting adaptor
when replacing the
P.C.B.
YES
NO
NO
SiUS28-902_a
Replace the indoor unit P.C.B.
Replace the indoor unit P.C.B.
Install a capacity setting adaptor.
Troubleshooting