SiUS04-924 TroubleshootingService Diagnosis 894.15 High Pressure Control in CoolingRemoteControllerDisplayF6Method ofMalfunctionDetectionHigh-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if thetemperature being sensed by the heat exchanger thermistor exceeds the limit.MalfunctionDecisionConditions Activated when the temperature being sensed by the heat exchanger thermistor rises above149°F(65°C). The error is cleared when the temperature drops below 122°F(50°C).SupposedCauses The installation space is not large enough. Faulty outdoor unit fan Faulty electronic expansion valve Faulty defrost thermistor Faulty outdoor unit PCB Faulty stop valve Dirty heat exchanger Foreign matter stuck in the outdoor unit fanTroubleshootingCheck No.04Refer to P.106Check No.06Refer to P.108Check No.07Refer to P.109Check No.09Refer to P.110(R7142)CautionBe sure to turn off the power switch before connecting or disconnectingthe connector, or parts damage may occur.Replace the fan motor.Repair the connector or fanmotor lead wires.Replace the heat exchangerthermistor.Replace PCB.Replace the electronicexpansion valve or coil.Replace the PCB.Change the air outlet grilleposition.Clean the heat exchanger.Change the installationlocation.Check No. 06Check the heat exchangerCheck the installation space.Check No. 04Check the electronic expansion valve.AbnormalNormalNormalNormalNormalAbnormalAbnormalAbnormalJudgmentJudgmentCheck No. 09Check the outdoor fan.Check No. 07Check the installationcondition.
