Daikin Sky Air Alpha Series Installer's Reference Manual

Also see for Sky Air Alpha RZAG100N7V1B: Installation manual

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Daikin Sky Air Alpha Series Installer's Reference Manual Manual pdf 29 page image

DisposalInstaller reference guide29RZAG71~140N7V1+Y1Sky Air Alpha-series4P573381-1 – 2019.0410.2 Precautions when troubleshootingWARNING▪ When carrying out an inspection on the switch box ofthe unit, ALWAYS make sure that the unit isdisconnected from the mains. Turn off the respectivecircuit breaker.▪ When a safety device was activated, stop the unit andfind out why the safety device was activated beforeresetting it. NEVER shunt safety devices or changetheir values to a value other than the factory defaultsetting. If you are unable to find the cause of theproblem, call your dealer.DANGER: RISK OF ELECTROCUTIONWARNINGPrevent hazards due to inadvertent resetting of the thermalcut-out: power to this appliance MUST NOT be suppliedthrough an external switching device, such as a timer, orconnected to a circuit that is regularly turned ON and OFFby the utility.DANGER: RISK OF BURNING11 DisposalNOTICEDo NOT try to dismantle the system yourself: dismantlingof the system, treatment of the refrigerant, oil and otherparts MUST comply with applicable legislation. UnitsMUST be treated at a specialised treatment facility forreuse, recycling and recovery.11.1 Overview: DisposalTypical workflowDisposing of the system typically consists of the following stages:1 Pumping down the system.2 Bringing the system to a specialized treatment facility.INFORMATIONFor more details, see the service manual.11.2 About pump downThe unit is equipped with an automatic pump down function, withwhich you can collect all refrigerant from the system into the outdoorunit.NOTICEThe outdoor unit is equipped with a low pressure switch ora low pressure sensor to protect the compressor by turningit OFF. NEVER short-circuit the low pressure switch duringpump down operation.11.3 To pump downDANGER: RISK OF EXPLOSIONPump down – Refrigerant leakage. If you want to pumpdown the system, and there is a leak in the refrigerantcircuit:▪ Do NOT use the unit's automatic pump down function,with which you can collect all refrigerant from thesystem into the outdoor unit. Possible consequence:Self-combustion and explosion of the compressorbecause of air going into the operating compressor.▪ Use a separate recovery system so that the unit'scompressor does NOT have to operate.CAUTIONDo not use the unit's automatic pump down function if thetotal piping length exceeds the chargeless length. Afraction of the refrigerant could be left in the circuit.1 Turn ON the main power supply switch.2 Make sure the liquid stop valve and the gas stop valve areopen.3 Press the pump down button (BS2) for at least 8 seconds. BS2is located on the PCB in the outdoor unit (see wiring diagram).Result: The compressor and outdoor unit fan startautomatically, and the indoor unit fan might start automatically.4 ±2 minutes after the compressor started, close the liquid stopvalve. If it is not closed properly during compressor operation,the system cannot be pumped down.5 Once the compressor stops (after 2~5 minutes), close the gasstop valve within 3 minutes after the compressor has stopped.Result: The pump down operation is finished. The userinterface may display " " and the indoor unit may continueoperating. This is NOT a malfunction. Even if you press the ONbutton on the user interface, the unit will NOT start. To restartthe unit, turn OFF the main power supply switch and turn it ONagain.6 Turn OFF the main power supply switch.NOTICEMake sure to reopen both stop valves before restarting theunit.