Daikin FXMA50A5VEB Installer And User Manual

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10 | Maintenance and serviceInstaller and user reference guide35FXMA-AVRV system air conditioner4P680920-1 – 2022.01WARNING▪ The refrigerant inside the unit is mildly flammable, but normally does NOT leak. Ifthe refrigerant leaks in the room and comes in contact with fire from a burner, aheater, or a cooker, this may result in fire, or the formation of a harmful gas.▪ Turn OFF any combustible heating devices, ventilate the room, and contact thedealer where you purchased the unit.▪ Do NOT use the unit until a service person confirms that the part from which therefrigerant leaked has been repaired.10.5.1 About the refrigerant leakage sensorWARNINGThe R32 refrigerant leakage sensor must be replaced after every detection or at theend of its lifetime. ONLY authorised persons may replace the sensor.NOTICEFunctionality of the safety measures are periodically automatically checked. In caseof malfunction, an error code will be displayed on the user interface.NOTICEThe R32 refrigerant leakage sensor is a semiconductor detector which mayincorrectly detect substances other than R32 refrigerant. Avoid using chemicalsubstances (e.g. organic solvents, hair spray, paint) in high concentrations, in theclose proximity of the indoor unit because this may cause misdetection of the R32refrigerant leakage sensor.INFORMATIONThe sensor has a lifetime of 10 years. The user interface displays error "CH-05"6 months before the end of the sensor lifetime and error "CH-02" after the end ofthe sensor lifetime. For more information, refer to the reference guide of the userinterface and contact your dealer.In case of detection when the unit is in standbyWhen the detection occurs when the unit is in standby, a "false detection check"will occur.False detection check1 The unit starts fan operation on the lowest setting.2 The user interface displays error "A0-13", emits an alarm sound and the statusindicator blinks.3 The sensor checks if a refrigerant leakage or misdetection occurred.▪ No refrigerant leakage detected. Result: The system resumes normal operationafter approximately 2 minutes.▪ Refrigerant leakage detected. Result:1 The user interface displays error "A0-11", emits an alarm sound and the statusindicator blinks.2 Contact your dealer immediately. For more information, see the installationmanual of the outdoor unit.