Error Codes: Outdoor Units ESIE05-033–58 Part 3 – Troubleshooting313453.2 Failure of Outdoor Unit PC Board (E1)Remote ControllerDisplayE1Method ofMalfunctionDetectionMicrocomputer checks whether E2PROM is normal.MalfunctionDecisionConditionsE2PROM:When E2PROM malfunctions when turning the power supply onSupposed Causes P Faulty outdoor unit PC boardTroubleshootingCaution Be sure to turn off power switch before connect or disconnect connector, or parts damage may beoccurred.Turn the power supplyoff once andthen back onProblem could be caused byexternal factor (noise, etc.) otherthan malfunction.Fan motor checkReplace the control PC board.NONOYESYESIs normal reset possible?Turnthe powersupply off anddisconnect the fan motorconnector from the PCB, thenturn the power supply onagain. Is "E1"displayed?
