Daikin Aurora Series, Service Manual, Page: 265 / 333

SiUS341802E Troubleshooting by Error Code
Service Diagnosis 252
2.55 Field Setting after Replacing Outdoor Unit Main PCB
Abnormality or Combination of PCB Abnormality
Error Code
PJ
Applicable
Models
All outdoor unit models
Method of Error
Detection
This error is detected according to communications with the inverter PCB.
Error Decision
Conditions
Make judgement according to communication data on whether or not the type of the inverter PCB is
correct.
Supposed
Causes
„
Mismatching of type of PCB
„
Improper (or no) field setting after replacing outdoor unit main PCB
Troubleshooting
Does the
inverter PCB part
No. match that of the
spare parts
list?
Does the
fan PCB part No.
match that of the spare
parts list?
Has
the DIP
switch setting been
made properly to replace
the outdoor unit
main PCB?
Does the
“Under Preparation”
indication lamp (H2P) on
the outdoor unit
main PCB turn
OFF?
YES
YES
NO
NO
YES
YES
NO
NO
Replace with a correct
inverter PCB.
RXLQ-TATJU,
RXLQ-TAYDU: A3P
RXLQ-TAYCU,
RXYQ-TAYCU: A4P
Replace with a correct fan
PCB.
RXLQ-TATJU,
RXLQ-TAYDU: A4P, A5P
RXLQ-TAYCU,
RXYQ-TAYCU: A5P, A6P
Properly make DIP switch
setting.
(After completion of setting,
reset the power supply.)
Modify the connection
wiring.
Replace the outdoor unit
main PCB (A1P).
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.