12 | Disposal
Installer reference guide
76
RZAG71~140N2V1+Y1
Sky Air Alpha-series
4P695307-1 – 2022.05
3 Press the pump down button (BS2) for at least 8 seconds. BS2 is located on
the PCB in the outdoor unit (see wiring diagram).
Result: The compressor and outdoor unit fan start automatically, and the
indoor unit fan might start automatically.
4 ±2 minutes after the compressor started, close the liquid stop valve. 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 gas stop valve
within 3 minutes after the compressor has stopped.
Result: The pump down operation is finished. The user interface may display
" " and the indoor unit may continue operating. This is NOT a malfunction.
Even if you press the ON button on the user interface, the unit will NOT start.
To restart the unit, turn OFF the main power supply switch and turn it ON
again.
6 Turn OFF the main power supply switch.
NOTICE
Make sure to reopen both stop valves before restarting the unit.
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