Daikin RZAG71L7V1B Reference Manual

Also see for RZAG100L7V1B: Service manual

Daikin RZAG71L7V1B Reference Manual Manual pdf 24 page image

11 DisposalInstaller reference guide24RZAG71~140L7V1BSplit system air conditioners4P418663-1 – 2016.0211.2 About pump downThe unit is equipped with an automatic pump down function, withwhich you can collect all refrigerant from the system into the outdoorunit.Example: To protect the environment, pump down when relocatingthe unit or when disposing of the unit.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 down1 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 (BS4) for at least 8 seconds. BS4is 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.Result: The pump down operation is finished. The userinterface may display " " and the indoor pump 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.