Samsung AM FXVAF Series Installation Manual page 90

Setting outdoor unit option switch and key function
Even when the outdoor unit power is off, it is dangerous when you come in contact with inverter PCB and
fan PCB since they are charged with high DC voltage.
though the outdoor unit is normal.
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If there is an A type PBA among the outdoor units installed as a module, the Auto pipe pairing operation
90
Refrigerant charging in Cooling mode
Trial operation in Cooling mode
Pump down all units in Cooling mode
H/R: Checking the pipe connection
H/P: Automatic setting of operation mode
(Cooling/Heating) for trail operation
Checking the amount of refrigerant
Discharge mode of DC link voltage
Forced defrost operation
Forced oil collection
H/R : Auto pipe pairing
H/P : Unused
Base heater testing mode
End Key operation
Display on segment
may differ depending on the progress)
may differ depending on the progress)
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Display on segment
Same as initial state