Midea MOU-12HN1 User Manual page 123

MCAC-UTSM-2008-11
E7: EEPROM malfunction
Check whether the main control chip 9177 is broken
Check PCB board or replace the main control board
E8: Full-water malfunction
Check whether the water-level switch is inserted well
Check whether the water-level switch is broken
Check whether the water pump is normal
Check PCB board or replace the main control board
Outdoor Units
E7
EEPROM chip is broken
No
No
E8
Yes
No
Yes
Yes
Replace EEPROM
Yes
Replace 9177 chip
No
Insert the water-level switch well
Yes
Replace the water-level switch
No
Replace the water pump
Troubleshooting
121