Toshiba RAV-SM804UT-E, RAV-SM1404UT-E Operation method, Refrigerant Recovery Control, 122

11-4. Outdoor Unit

11-4-1. Refrigerant Recovery Control

The “ozone destruction coefficient” of HFC refrigerant is 0 and the discharge regulation is set as anathermal effect gas.

To this model, a switch which can perform the refrigerant recovery (pump down) by the outdoor unit is mounted so that it is easy to react against the environment at reinstalling or rejection time.

[Operation method]

1)Set the mode of the indoor unit to fan mode.

2)Set all DIP switch SW804 to OFF (Initial status) and then push the button switch SW801 for approx. 1 second. The cooling operation starts. (During this time, D805 (Green LED) flashes.)

This operation finishes by 10 minutes.

3)After operation for 3 minutes or more, close valve at liquid side.

4)After recovery of refrigerant, close valve at gas side.

5)Push the button switch SW801 again for approx. 1 second. The outdoor unit stops.

6)Stop the indoor unit and then turn off the power supply.

W804: All OFF (As initial status)

SW801: Push for 1 second.

	4
ON		3
		2
		1

The D805 (Green LED) flashes.

D800
D801
D802
D803
D804		4
D805	ON	3
		2
		1
	ON	4
		3
		2
		1

11-4-2. Various setting on outdoor unit (Existing piping, Power save, Cooling-only, etc.)

The following settings are available by DIP switch setup and jumper line setup.

Function				Set position			Control contents
					Turn the switch to ON when mounting a duct to the discharge
					port of the outdoor unit. Add 3 taps to the upper limit value of the
High static					outdoor fan tap.
pressure setup					The operation is performed with
					(Max: Upper fan: 890 rpm / Lower fan: 910 rpm (WF)).
	SW802				In this case, the outdoor noise level may increase.
Existing piping				High static pressure setup	Turn the switch to ON when Ø19.1 is used for the existing pipe.
			4		In this case, the heating capacity may lower according to outside
setup				Existing piping setup
			3		temp. and indoor temp. in heating operation.
			2	Power save setup
					Turn the switch to ON when using the power save function.
Power save setup	ON			Snow-proof fan control
			1		The control to lower the compressor frequency (Approx. –10%) is
					performed by indoor heat exchanger temp. in heating operation.
					When snow enters from clearance of the fan guard or heat
Snow-proof fan		∗ all are OFF at shipment.			exchanger into blast path and it is accumulated, the control to
					prevent generation of motor lock is validated.
control
					When outside temp. is below 0°C though the compressor stops,
					the outdoor fan operates with W5.
Defrost time				J805, J806	The defrost interval is cut to shorten it than the standard status.
					For contents of control and cutting method, refer to
change
						Section 8-2-10. Defrost control.
					When it is needed to lower the maximum value of the
					compressor frequency, cut the jumper line.
					Max. frequency at cooling/heating is lowered.
					In this case the Max. capacity decreases.
Max. frequency						Max. frequency of compressor
				J807
change								RAV-SP1104		RAV-SP1404
						Model
								COOL	HEAT	COOL	HEAT
						Standard status		53.4	71.4	64.2	90.6
						When J807 is cut		53.4	64.2	64.2	72.0
Cooling-only setup				J808	When using the air conditioner as a cooling-only conditioner, cut
					the jumper line.(An air conditioner can be changed to cooling-
					only conditioner by “0F” of DN code on the remote controller.)

– 122 –