Haier AB072MRERA - Page 643

635
Troubleshooting
[05] EEPROM failure
[09] Indoor address repeated
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
If the chip is xed well
If the chip is damaged
Check if PCB is faulty,
if yes, replace it
Replace it
Reconnect
If wiring between P and
Q is normal
If communication wire is
connected with multi
outdoors
Modify the wiring
Modify the communication wire
If indoor QTY connected with
outdoor is normal
Check outdoor connecting board,
if faulty, replace it