SiBE07-618_D TroubleshootingService Diagnosis 714.12 Input Overcurrent DetectionRemoteControllerDisplayE8Method ofMalfunctionDetectionAn input overcurrent is detected by checking the input current value being detected by CT withthe compressor running.MalfunctionDecisionConditions The following CT input with the compressor running continues for 2.5 seconds.CT input : Above 20 ASupposedCauses Defective compressor Defective power module Defective outdoor unit PCB Short circuitTroubleshootingCheck No.07Refer to P.96Check No.08Refer to P.96Check No.14Refer to P.99CautionBe sure to turn off the power switch before connecting or disconnectingconnectors, or parts may be damaged.∗ An input overcurrent 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 overcurrent,take the following procedure.(R11709)NOYESYESNOStart operation and measure theinput current.Check No. 08Check the discharge pressure.Check No. 07Check the installation condition.Check No. 14Check 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 start operation.Replace the outdoor unitPCB.Any LED off?Input current flowingabove its stop level?∗ Inverter checkerPart No.: 1225477Correct the power supply orreplace the PM1.(Replace the outdoor unitPCB.)
