12-6 Samsung Electronics12-2-5 In case of heating at the cooling mode or cooling at the heating mode1. Troubleshooting procedureChange the setting temperature ofremote control.Operate it with a heating modeas soon as the defrosting is finished.After 3 minutes, coolingand heating start automatically.NoNoNoYesYesYesIs the Thermo off?Is the unitin the defrosting operation?Is the compressorin 3 minutes off?Check the resistance valueof 4-WAY valve coil.Go to the next page 4-WAY valve main body errorAttach thesensor correctly.Over shortageof the refrigerantConnect the connectercorrectly.4-WAY valve coil errorExchangethe outdoor PCB.NoYesYesYesOKYesNoNoNoNGNoIs much frostin the indoor heatexchanger?Does the4-WAY valve operatenormally?Is theoutdoor air sensor andoutdoor heat exchanger attachedcorrectly?Is the4-WAY valve connectorconnected correctly?Dose thevoltage of AC 230Vapply to the connector of 4 WAYvalve coil during theoperation?Troubleshooting
