Troubleshooting SiBE04-82496 Service Diagnosis4.12 Input Over Current Detection4.12.1 25/35 ClassRemoteControllerDisplayE8Method ofMalfunctionDetectionAn input over-current is detected by checking the input current value with the compressorrunning.MalfunctionDecisionConditions The following current with the compressor running continues for 2.5 seconds.Cooling / Heating: Above 9.25ASupposedCauses Over-current due to compressor failure Over-current due to defective power transistor Over-current due to defective outdoor unit PCB Error detection due to outdoor unit PCB Over-current due to short-circuitTroubleshootingCheck No.07Refer to P.131Check No.08Refer to P.131CautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.∗ An input over-current may result from wrong internal wiring. If the wires have been disconnected andreconnected for part replacement, for example, and the system is interrupted by an input over-current,take the following procedure.(R8256)NOYESYESNOGet restarted and measure theinput current.Check No. 08Check the discharge pressure.Check No. 07Check the installation condition.Check with the inverter checker (∗).Turn off the power and disconnectthe harnesses U, V and W.Turn off the power, and reconnectthe harnesses. Turn on the poweragain and get restarted.Replace the outdoor unitPCB.Correct the power supply orreplace the outdoor unitPCB.Any LED off?Input current flowingabove its stop level?∗ Inverter checkerPart No.: 1225477
