A747931 : 4-Way Cassette Type Indoor Unit Control Board
Ceiling Type (T2 type) Indoor Unit Control Board
EEPROM
OPTION
TEST Pin
CHK Pin
RC
A747938 : Duct Type Indoor Unit Control Board
5
EEPROM
OPTION
TEST Pin
CHK Pin
RC
A747336 : 4-Way Cassette 60 x 60 Type Indoor Unit Control Board
RC
EEPROM
OPTION
TEST Pin
CHK Pin
5-9