English 2311. TEST OPERATION11-1 TO PERFORM A TEST RUNCAUTIONThis task is only applicable when using the BRC1E53 user interface. When using any other user interface,see the installation manual or service manual of the user interface.NOTE• Backlight. To perform an ON/OFF action on the user interface, the backlight does not need to be lit. Forany other action, it needs to be lit first. The backlight is lit for ±30 seconds when you press a button.(1) Perform introductory steps.Table 13(2) Start the test run.Table 14(3) Check operation for 3 minutes.(4) Check operation of the airflow direction.# Action1Open the liquid stop valve (A) and gas stop valve (B) by removing the stem cap and turning counter-clockwise with a hex wrench until it stops.2 Close the service cover to prevent electric shocks.3 Turn On power for at least 6 hours before starting operation to protect the compressor.4 On the user interface, set the unit to cooling operation mode.# Action Result1 Go to the home menu2Press at least 4 seconds.The Service Setting menu is displayed.3Select the Test Operation.4Press. Test Operation is displayed on the home menu.5Press within 10 seconds.Test run starts.A BCool Set to28 °CReturn SettingService Settings 1/3Test OperationMaintenance ContactField SettingsDemandMin Setpoints DifferentialGroup AddressCoolReturn SettingTest Operation