88 Samsung ElectronicsReference Sheet͑غ Check Operation & Amount of Refrigerant Automatically Checking1. Check Operation1-1 Check Operation1) What is the Check Operation?DVM MINI main components defective check and check the status of the installation, provide guidelines that can promptlyand accurately resolve the problems that may occur in the field.If does not end the Automatic Commissioning, normal operation is impossible to enter, it should protect the system fromthe abnormal state. ("UP")2) Check operation Preliminary checking.(1) Check the Power cable of Indoor / Outdoor Unit and communication wire.(2) Turn on the power 3 hours before to start the Check operation. (Crankcase heater to be heated sufficiently.)(3) Check before applying power voltage and phase using a phase tester and voltmeter.phase-to-phase, 220V (R-N, S-N, T-N).(4) Power on, perform the tracking. (Outdoor Unit inspects Indoor Unit and optional.)(5) Card to verify the installation of the control box front : must be record the installation details.Necessarily turn on the power 3 hours before to start the Check operation.3) How to use the Check operation.(1) Check operation, use the Key Mode. (Pressing the K1 Tact Switch for a long time)- If does not complete the Check operation, Display the "UP"(Unprepared) on the LED after checking communication.(Compressor to operate general operation is prohibited.)UP Mode will be turned off automatically at finished the Check operation.- Check operation is carried out by the operating conditions.(From 30 minutes to maximum 50 minutes)- During Check operation due to the valve check, the noise can be generated. (Sustained abnormal noise occurs, check it)(2) When an error occurs during the Check operation, check the error code in the product and then service it.(3) Shut down the Check operation, resulting report will be issued using the S-NET or S-CHECKER.- The resulting report of the "Undetermined"item, troubleshoot the accordance with the service manual.- Troubleshoot all the items of "Undetermined" and then restart the Check operation.(4) Check the following as Check operation. (Heating / Cooling)- Check the Cooling and Heating operation is progressing well.- Individual Indoor Unit control : check the wind direction, wind speed.- Check the Indoor and Outdoor abnormal noise.- Check the drainage of the Indoor Unit cooling operation.- More operation : Checking status by using the S-NET.(5) Refer to manual and explain air conditioner usage to user.(6) Deliver this installation guide so that customer retain.