Panasonic S-3650PU3E Technical Data & Service Manual page 238

E08 Duplicate Indoor Unit Address Settings Error
1. Error Detection Method
It is judged an error if the addresses of indoor units are duplicated.
The indoor unit address settings are duplicated in the remote control detailed settings mode.
•
•
The multiple unit DISP pin is shorted across the indoor unit whose address is Not Set.
2. Error Diagnosis
1 Indoor
1-1
unit
control
PC board
1-2
1-3
1-4
•
For information on the procedures for replacing the nonvolatile memory (EEPROM) of the indoor unit, refer to the manual
that is packaged with the indoor unit service board.
ACXA73-3129* : 4-Way Cassette Type (Type U3)
ACXA73-3129* : 4-Way Cassette Type (Type U3) Indoor Unit Control Board
5
ACXA73-3440* : Middle Static Pressure Duct Type
TEST Pin
ACXA73-3440* : Middle Static Pressure Duct Type (Type F3) Indoor Unit Control Board
TEST Pin
Is the DISP pin on the indoor unit control PC board shorted?
Conduct checks prior to auto address setting.
Does E08 fail to go off even after running auto address setting again?
The nonvolatile memory (EEPROM) on the indoor unit board has failed.
Replace the EEPROM.
Do not make changes to indoor unit addresses with the detailed settings of the remote
controller.
Make them in the remote control address change mode.
(Type F3)
CHK Pin
RC
DISP Pin
CHK Pin EEPROM
RC
DISP Pin
OPTION
TEST Pin
CHK Pin
EEPROM
RC
OPTION
TEST Pin
CHK Pin
EEPROM
RC
EEPROM
OPTION
OPTION
5-2-1-9
Yes Remove the short
No 1-2
Yes 1- 3
No 1-4