Haier AU482FIBHA Service Manual page 106

Some information for the colorful screen wall mounted type unit:
1.The unit address setting method has been changed to use dial switch, which
is as the same as that of the duct unit and ceiling concealed type unit. The
address-setting controller is invalid. When out of factory, the address is set as
No. 3. There are maximum 8 indoor units according to the communication
method.
2.The infrared controller is YR-H71, and the emission code should be code B.
Some buttons will be useless; the whole function is as the same as YR-C04.
The detailed information please refers to the operation manual.
3.The unit has auto restart function. Press "SWING" button 10 times within 5
seconds, after the buzzer sounds 4 times, auto restart function will be activated.
Press "SWING" button 10 times within 5 seconds again, after the buzzer
sounds 2 times, this function will be cancelled.
4.This unit has manual defrosting function. In heating mode with high fan
speed, at 30 degrees, press "SWING" button 8 times in 5 seconds, after the
buzzer sounds 3 times, this function is activated. (used in debugging)
5.The unit has temperature compensation function in heating mode. When out
of factory, temperature compensation is set as 4 degrees. Cut off the wire of
CN4, the compensation will be cancelled.
6.CN3 is short wire for short time function. CN4 is short wire for temperature
compensation. CN6 is testing port for serial communication.