Midea MSMBA-07HRN1 - Diagnosis and Solution

Mission On-off DM16-01.01.21en
44 Service manual
10.2 Diagnosis and Solution
10.2.1 EEPROM parameter error diagnosis and solution(E1)
Error Code
E1
Malfunction decision
conditions
Indoor or outdoor PCB main chip does not receive feedback
from EEPROM chip.
Supposed causes ● Installation mistake
● PCB faulty
Trouble shooting:
EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed
voltage.