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Outdoor unit
19. Outdoor Unit Setting
19-1. Refrigerant recovery control
Although HFC refrigerant is "Ozone depletion potential = 0", emission control is applied to it as a greenhouse effect
gas.
This model has a switch for the outdoor unit to perform an environment-friendly refrigerant recovery operation
(pump down) when the model is replaced or discarded.
[How to operate]
1 Remove the water in the hydro unit.
(With the water remained in the hydro unit, performing
refrigerant recovery may freeze the water and burst the
unit.) *1
2 Confirm the LED display of the outdoor unit shows the initial
state. If not then please return it to the initial state (*2). Push
and hold down SW01 for at least 5 seconds. D804 will start
slowly flashing. Push SW01 several times until the LED
display becomes as follows. Push SW02, then D805 will
start flashing. Push and hold down SW02 for at least 5
seconds. D804 will start slow flashing and D805 will change
to on. The air to water heat pump enters the forced cooling
mode.
: Off : Light : Flash (5 times/sec)
3 After 3 minutes has passed, close the liquid-side valve.
4 After the refrigerant recovery is completed, close the gas-side valve.
5 Press and hold down SW01 and SW02 at the same time for at least 5 seconds to stop operation.
*1: If can not remove the water
Operate the circulation pump, to prevent freezing.
1.Turn off the power. (hydro and outdoor unit)
2.Set DIP_SW705-3 “ON” on the hydro control board.
3.Turn on the power. (hydro and outdoor unit)
4.Rotate the rotary SW700 to position “1” and press tactile switch SW703 for 5 sec, or longer.
5.Rotating the rotary SW700 to position “F”.
6.If you finish refrigerant recovery operation, set DIP_SW705_3 “OFF”.
*2: Hold down the SW01 and SW02 simultaneously for at least 5 seconds.
D800 D801 D802 D803 D804
LED displays Service switches
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