Lennox Mini-Split Service Manual / Page 198
E0 Flowchart
E0
Shut off the power supply and turn it on 1 min-
ute later. Is it still displaying the error code?
If the EEPROM chip is soldered on PCB, re-
place the PCB. Otherwise, check whether the
EEPROM chip is plugged in PCB properly?
Yes
Yes
Insert the EEPROM properly
No
Replace the indoor PCB.
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