Panasonic S-36PN1E5

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Caution for Pump Down
(1) If the length of inter-unit tubing exceeds 30 m, pump down cannot be used to recover the refrigerant.
(The overload protection device may be activated.)
(2) Short the “PUMP DOWN” pin (or press and hold the “PUMP DOWN” button) on the outdoor unit PCB for 1
second or longer.
(3) When the valve service port pressure is approximately 0.1 MPa, short the “PUMP DOWN” pin (or press the
“PUMP DOWN” button) again to end refrigerant recovery.
During refrigerant recovery, LED 1 blinks and LED 2 is lit.
CAUTION
Pump down means refrigerant gas in the system is returned to the outdoor unit.
Pump down is used when the unit is to be moved, or before servicing the refrigerant circuit.
Observe the following items when using pump down operation to recover the refrigerant.
This outdoor unit cannot collect more than the rated refrigerant amount as shown by the nameplate on the
back.
If the amount of refrigerant is more than that recommended, do not conduct a pump down.
In this case use another refrigerant collecting system.
In order to protect the compressor, do not continue operating to generate a negative pressure in the
inter-unit tubing.
The PUMP DOWN (CN042) pin is located at the right of the
outdoor unit PCB, as shown in the above figure.
Close the liquid-side valve during refrigerant recovery.
If the unit is operated for 10 minutes or longer with the liquid-side valve open, operation will be stopped,
although no alarm will be displayed on the remote controller.
If this occurs, close the valve and restart operation.
Pay a special attention to the rotating of the fan while operating.
Important Information Concerning Pump Down
System address
(S002)
EEPROM
LED1LED2
PUMP DOWN (CN042)
AUTO ADD (CN041)
(S003)
SM830211-07PAC-i.indb356SM830211-07PAC-i.indb356 2013/09/1722:48:122013/09/1722:48:12