Klimaire KSIL024-H219 Service Manual - Manual (Page 53)

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9.2 Diagnosis and Solution
9.2.1 EEPROM parameter error diagnosis and solution
Shut off the power supply and turn on it 5s later
The problem comes out again
Is the EEPROM chip plugged in indoor PCB well?
No
Correct the connection
Replace the main PCB of indoor unit