Troubleshooting SiBE07-618_C76 Service Diagnosis4.15 High Pressure Control in CoolingRemoteControllerDisplayF6Method ofMalfunctionDetectionHigh-pressure control (operation half, frequency drop, etc.) is activated in cooling mode if thetemperature sensed by the outdoor heat exchanger thermistor exceeds the limit.MalfunctionDecisionConditions The temperature sensed by the outdoor heat exchanger thermistor rises above about 60°C. The error is cleared when the temperature drops below about 50°C.SupposedCauses The installation space is not large enough. Dirty outdoor heat exchanger Defective outdoor fan motor Defective stop valve Defective electronic expansion valve or coil Defective outdoor heat exchanger thermistor Defective outdoor unit PCBTroubleshootingCheck No.04Refer to P.94Check No.06Refer to P.96Check No.07Refer to P.97Check No.08Refer to P.97Check No.09Refer to P.98(R11897)CautionReplace the fan motor.Reconnect the connector orfan motor lead wires.Replace the stop valve.Replace the outdoor heatexchanger thermistor.Replace the outdoor unitPCB.Replace the electronicexpansion valve or the coil.Replace the outdoor unitPCB.Clean the outdoor heatexchanger.Change the installationlocation or direction.Check the installation space.NGOKOKNGNGOKOKOKNGNGCheck No. 09Check the outdoor fan.Check No. 08Check the dischargepressure.Check No. 04Check the electronicexpansion valve.Check No. 06Check the outdoor heatexchanger thermistor.Check No. 07Check the installationcondition.Be sure to turn off the power switch before connecting or disconnectingconnectors, or parts may be damaged.
