Lennox MLA018S4S-1P User Manual

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Error Code: F4
Description: OutdoorEEPROMerror.
General Note: PCBmainchipdoesnotreceivefeedbackfromEEPROMchip.EEPROM:aread-onlymemorywhosecontentscanbe
erasedandreprogrammedusingapulsedvoltage.ForthelocationofEEPROMchip,pleaserefertothebelowphotos.
OutdoorEEPROMmalfunction
Poweroff,thenrestarttheunit3minutes
later.
Yes
Doestheproblemstillexist?
Outdoor PCB(M3OC-30HRFN1-M)
Yes
ReplacetheoutdoormainPCB.

Lennox MLA018S4S-1P Specifications

General

Brand	Lennox
Model	MLA018S4S-1P
Category	Air Conditioner
Language	English