Capacity Determination Device Abnormality - Daikin REYQ-AATJA Service Manual

SiUS372201EA

3.20 Capacity Determination Device Abnormality

Applicable
All indoor unit models
Models
AJ
Error Code
Method of Error Capacity is determined according to resistance of the capacity setting adaptor and the memory
Detection inside the IC memory on the indoor unit control PCB, and whether the value is normal or abnormal
is determined.
Error Decision
When the capacity code is not saved to the PCB, and the capacity setting adaptor is not connected.
Conditions When a capacity that does not exist for that unit is set.
Supposed
 The capacity setting adaptor was not installed.
Causes  Defective indoor unit control PCB
Troubleshooting
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
The
indoor unit
NO
control PCB was
replaced with a
spare PCB.
YES
The
capacity
NO
setting adaptor need
to be installed when
replacing the
PCB.
YES
Troubleshooting by Error Code
Replace the indoor unit control
PCB (A1P).
Replace the indoor unit control
PCB (A1P).
Install a capacity setting
adaptor.
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