Outdoor Unit; Refrigerant Recovery Control; Operation Method - Toshiba RAV-SM404SDT-E Service Manual

12-4. Outdoor Unit

12-4-1. 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.
12-4-2. 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
High static
pressure setup
SW802
Existing
piping setup
Power save
setup
∗ all are OFF at shipment.
Snow-proof
fan control
Defrost
time change
Max. frequency
change
Cooling-only
setup
Set position
High static pressure setup
Existing piping setup
Power save setup
Snow-proof fan control
J805, J806
J807
J808
<In case of SP110, SP140>
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 outdoor fan tap.
The operation is performed with
(Max: Upper fan: 890 rpm / Lower fan: 910 rpm (WF)).
In this case, the upper limit value of static pressure for duct is 5Pa or less
on 25°C degrees and please use straight duct.
In this case, the outdoor noise level may increase.
Turn the switch to ON when Ø19.1 is used for the existing pipe.
In this case, the heating capacity may lower according to outside temp. and
indoor temp. in heating operation.
Turn the switch to ON when using the power save function.
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 exchanger into
blast path and it is accumulated, the control to prevent generation of motor
lock is validated.
When outside temp. is below 0°C though the compressor stops, the
outdoor fan operates with W5.
The defrost interval is cut to shorten it than the standard status.
For contents of control and cutting method, refer to Section
9-2-10. 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 of compressor
RAV-SP1104
Model
COOL
Standard status 53.4
When J807 is cut 53.4
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.)
– 166 –
Revised 2: Mar., 2008
W804: All OFF (As initial status)
SW801: Push for 1 second.
The D805 (Green LED)
flashes.
D800
D801
D802
D803
D804
D805
RAV-SP1404
HEAT COOL HEAT
71.4 64.2 90.6
64.2 64.2 72.0