Toshiba RAV-GV1401ATP-E Installation Manual page 20

Refrigerant recovery
When recovering the refrigerant in situations such as when relocating an indoor unit or outdoor unit, the recovery
operation can be performed by operating the SW01 and SW02 switches on the P.C. board of the outdoor unit.
A cover for the electric parts has been installed in order to provide protection from electric shocks while work is
being performed. Operate the service switches and check the LED displays with this electric parts cover in place.
Do not remove this cover while the power is still on.
DANGER
The entire P.C. board of this air conditioner system is a high-voltage area.
When operating the service switches with the power of the system left on, wear electrically insulated gloves.
LED displays
D800 D801 D802 D803 D804
(Yellow) (Yellow) (Yellow) (Yellow) (Yellow) (Green)
• There are four LEDs display patterns.
: ON
: OFF
: Rapid flashing (5 times/sec.)
: Slow flashing (1 time/sec.)
In the initial LED display status, D805 is lighted as shown on the table below. If the initial status is not
established (if D805 is flashing), hold down the SW01 and SW02 service switches simultaneously for at least
5 seconds to return the LED displays to the initial status.
D800 D801
(Yellow) (Yellow)
or or
Rapid Rapid
OFF or OFF or OFF or
flashing flashing
37-EN
D805
LED display initial status
D802 D803 D804
(Yellow) (Yellow) (Yellow)
or or or
Rapid Rapid Rapid
OFF or OFF or
flashing flashing flashing
– 19 –
Steps taken to recover the refrigerant
1. Operate the indoor unit in the fan mode.
2. Check that the LED displays are placed in their initial status. If not, place them in the initial status.
3. Hold down SW01 for at least 5 seconds, and check that D804 flashes slowly. (Fig. 1)
4. Press SW01 once to set the LED displays (D800 to D805) to the "refrigerant recovery LED display" shown
below. (Fig. 2)
(Fig. 1)
LED displays indicated when step 3 is taken
D800 D801
: ON, : OFF,
Service switches
5. Press SW02 to set D805 to rapid flashing. (Each time SW02 is pressed, D805 is switched between rapid
SW01, SW02
flashing and OFF.) (Fig. 3)
6. Hold down SW02 for at least 5 seconds, and when D804 flashes slowly and D805 lights, the forced cooling
operation is started. (Max. 10 minutes) (Fig. 4)
(Fig. 3)
LED displays indicated when step 5 is taken
D800 D801
: ON, : OFF,
7. After operating the system for at least 3 minutes, close the valve on the liquid side.
8. After the refrigerant has been recovered, close the valve on the gas side.
9. Hold down SW01 and SW02 simultaneously for at least 5 seconds. The LED displays are returned to the initial
status, and the cooling operation and indoor fan operation stop.
10. Turn off the power.
* If there is any reason to doubt whether the recovery was successful in the course of this operation, hold down
SW01 and SW02 simultaneously for at least 5 seconds to return to the initial status, and then repeat the steps
for recovering the refrigerant.
D805
(Green)
ON
(Fig. 2)
D802 D803 D804 D805 D800
: ON,
: Slow flashing
(Fig. 4)
LED displays indicated when step 6 is taken
D802 D803 D804 D805 D800
: Rapid flashing : ON,
Refrigerant recovery LED display
D801 D802 D803 D804 D805
: OFF, : Rapid flashing
D801 D802 D803 D804 D805
: OFF, : Slow flashing
38-EN