Daikin FXSN71A2VEB Installation And Operation Manual

Also see for FXSN-A2: Installer and user guide

8 TroubleshootingInstallation and operation manual10FXSN50~112A2VEBCO₂ Conveni-Pack: indoor unit4P602815-1F – 2021.072 Clean the air filter. Use a vacuum cleaner or wash with water.If the air filter is very dirty, use a soft brush and neutraldetergent.3 Dry the air filter in the shadow.4 Re-attach the air filter. Align the 2 hanger brackets and pushthe 2 clips in their place and pull the cloth if necessary.rear suction bottom suction5 Confirm that all hangers are fixed.6 In case of bottom suction, close the air inlet grille. In case ofrear suction, close service duct opening.7 Turn ON the power.8 To remove warning screens, see the reference guide of theuser interface.7.3 About the refrigerantThis product contains refrigerant gases.Refrigerant type: R744 (CO2)WARNING▪ Do NOT pierce or burn refrigerant cycle parts.▪ Be aware that the refrigerant inside the system isodourless.WARNINGThe R744 refrigerant (CO2) inside the unit is odourless,non-flammable and normally does NOT leak.ALWAYS install a CO2 detector according to thespecifications of standard EN378.If the refrigerant leaks in high concentrations in the room, itmay have negative effects on its occupants such asasphyxiation and carbon dioxide poisoning. Ventilate theroom and contact the dealer where you purchased the unit(see "7.3.1 About refrigerant leak detection" [410]).Do NOT use the unit until a service person confirms thatthe part from which the refrigerant leaked has beenrepaired.7.3.1 About refrigerant leak detectionIn order to detect refrigerant leaks, a CO2 refrigerant leak detector(field supply) MUST be installed. The CO2 refrigerant leak detectormay require annual tests. For more details, see the documentationof the installed device.In case a CO2 refrigerant leak is detected▪ the fan of the indoor unit is stopped to prevent the refrigerant frombeing spread,▪ the user interface displays error code A0 or U9 ( for theMadoka; to display error codes, refer to the reference guide of theMadoka),▪ a warning sound will come from the user interface ( only forMadoka with buzzer, see option list) or from another safety alarmin combination with a CO2 refrigerant leak detector (field supply).Actions required by the user1 Ventilate the room and immediately contact the dealer whereyou purchased the unit. Do NOT use the unit before the fault isfixed.Actions required by the installer or the service personINFORMATIONDuring detection of the refrigerant leakage, the contactbetween terminals T1 and T2 disconnects. During normaloperation, the contact between terminals T1 and T2 isclosed (acting as a short circuit).1 If field supplied stop-valves are NOT installed: Close the stopvalves of the gas and liquid pipe on the outdoor unit.2 If field supplied shut-off valves are installed: If the refrigerantleak to the room has stopped, you can use the air conditionerfor other rooms where the refrigerant leak did NOT occur.3 Locate and repair the cause of the refrigerant leak. Ifnecessary, replace the indoor unit.4 Refill the refrigerant if needed.5 Perform manual power reset and resume operation.NOTICEAfter the refrigerant leakage is detected, the unit will senda signal at regular intervals to confirm if the CO2concentration is at a safe level. Even when the CO2concentration is at a safe level, do NOT resume operationbefore the fault is fixed and the refrigerant is refilled.8 TroubleshootingIf one of the following malfunctions occur, take the measures shownbelow and contact your dealer.WARNINGStop operation and shut OFF the power if anythingunusual occurs (burning smells etc.).Leaving the unit running under such circumstances maycause breakage, electrical shock or fire. Contact yourdealer.The system MUST be repaired by a qualified service person.Malfunction MeasureIf a safety device such as a fuse, abreaker or an earth leakage breakerfrequently actuates or the ON/OFFswitch does NOT function properly.Turn OFF all main powersupply switches to theunit.If water leaks from the unit. Stop operation.The operation switch does NOT functionproperly.Turn OFF the powersupply.If the user interface displays or anerror code.Notify your installer andreport the error code. Todisplay error codes, seethe reference guide of theuser interface.