Haier AU282AHBEA Service Manual page 277

units sets: 128×16 can be controller. Address setting of central controller can be met firstly, and then
modulate the address setting of slave unit wired controlled.
LED in indoor PCB:
1. LED1：is the state lamp for remote receiver as well as failure lamp. If indoor unit is normal, LED1 is on,
or if failure occurs, LED1 flashes regularly, and you can adjust failure type according to the flash times.
2. LED2：is used for multi split units as communication lamp. If communication between indoor and
outdoor is normal, LED2 will be on.
3. LED3：is used for single split units as communication lamp. If communication between indoor and
outdoor is normal, LED3 will be on.
4. LED4、LED5：is the lamp that shows the data receiving or sending between wired controller and PCB,
If LED4、LED5 be on in turn, communication between wired controller and PCB is normal.
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