Daikin FNA25A2VEB Installer's Reference Manual

Also see for FNA25A2VEB: Installation manual Operation manual Installer's reference guide

Contents

7 CommissioningInstaller reference guide18FNA25~60A2VEBSplit system air conditioners4P482940-1 – 2017.06The power supply voltage matches the voltage on theidentification label of the unit.There are NO loose connections or damaged electricalcomponents in the switch box.The insulation resistance of the compressor is OK.There are NO damaged components or squeezedpipes on the inside of the indoor and outdoor units.There are NO refrigerant leaks.The correct pipe size is installed and the pipes areproperly insulated.The stop valves (gas and liquid) on the outdoor unit arefully open.7.3 To perform a test runThis task is only applicable when using the BRC1E52 or BRC1E53user interface. When using any other user interface, see theinstallation manual or service manual of the user interface.NOTICEDo not interrupt the test run.INFORMATIONBacklight. To perform an ON/OFF action on the userinterface, the backlight does not need to be lit. For anyother action, it needs to be lit first. The backlight is lit for±30 seconds when you press a button.1 Perform introductory steps.# Action1 Open the liquid stop valve (A) and gas stop valve (B)by removing the stem cap and turningcounterclockwise with a hex wrench until it stops.A B2 Close the service cover to prevent electric shocks.3 Turn ON power for at least 6 hours before startingoperation to protect the compressor.4 On the user interface, set the unit to cooling operationmode.2 Start the test run# Action Result1 Go to the home menu.Cool Set to28 °C2 Press at least 4 seconds. The Service Settings menuis displayed.# Action Result3 Select Test Operation.Return SettingService Settings 1/3Test OperationMaintenance ContactField SettingsDemandMin Setpoints DifferentialGroup Address4 Press. Test Operation isdisplayed on the homemenu.CoolReturn SettingTest Operation5 Press within 10 seconds. Test run starts.3 Check operation for 3 minutes.4 Stop the test run.# Action Result1 Press at least 4 seconds. The Service Settings menuis displayed.2 Select Test Operation.Return SettingService Settings 1/3Test OperationMaintenance ContactField SettingsDemandMin Setpoints DifferentialGroup Address3 Press. The unit returns to normaloperation, and the homemenu is displayed.NOTICEWhen the indoor unit fan rotates and the operation lightflashes after trial operation, there is a risk of refrigerantleakage. In that case, immediately ventilate the room andcontact your dealer.17.4 Error codes when performing atest runIf the installation of the outdoor unit has NOT been done correctly,the following error codes may be displayed on the user interface:Error code Possible causeNothing displayed(the currently settemperature is notdisplayed)▪ The wiring is disconnected or there is awiring error (between power supply andoutdoor unit, between outdoor unit andindoor units, between indoor unit anduser interface).▪ The fuse on the outdoor or indoor unitPCB has blown.A0 ▪ Refrigerant leak detected.1CH ▪ Abnormality of refrigerant leakagesensor.1E3, E4 or L8 ▪ The stop valves are closed.▪ The air inlet or air outlet is blocked.(1) Only for units using R32 refrigerant. Refer to the outdoor unit specifications for the type of refrigerant to be used.