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Pump Down Operation
In order to protect the environment, be sure to pump down when relocating or disposing of the unit.
1) Remove the valve lid from liquid shut-off valve and gas shut-off valve.
2) Carry out forced cooling operation.
3) After five to ten minutes, close the liquid shut-off valve with a hexagonal wrench.
4) After two to three minutes, close the gas shut-off valve and stop forced cooling operation.
How to force cooling operation mode
■ Using the indoor unit operation/stop button
Press the indoor unit operation/stop button for at least five seconds.
(Operation will start.)
• Forced cooling operation will stop automatically after around 15 minutes.
To force a test run to stop, press the indoor unit operation/stop button.
■ Using the main unit's remote control
1) Press the "operation/stop" button. (Operation will start.)
2) Press the temperature
3) Press the "operation select" button twice.
(
will be displayed and the unit will enter test run mode.)
4) Press the "operation select" button to return the operation mode to cooling.
• Test run mode will stop automatically after around 30 minutes. To force a test run to stop, press the operation/stop button.
CAUTION
After closing the liquid shut-off valve, close the gas shut-off valve within three minutes, then stop the forced operation.
Facility Setting
(cooling at low outdoor temperature)
This function is limited only for facilities (the target of air conditioning is equipment (such as computer)). Never use it in
a residence or office (the space where there is a human).
1) Cutting jumper8 (J8) on the circuit board will expand the operation range down to –15°C. However it will stop if the outdoor
temperature drops below –20°C and start back up once the temperature rises again.
CAUTION
1) If the outdoor unit is installed where the heat exchanger of the unit is exposed to direct wind, provide a windbreak wall.
2) Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings.
3) Do not place humidifiers or other items which might raise the humidity in rooms where facility settings are being used.
A humidifier might cause dew jumping from the indoor unit outlet vent.
4) Cutting jumper 8 (J8) sets the indoor fan tap to the highest position. Notify the user about this.
■English
button and the "operation select" button at the same time.
Not available with the RXG25/35CVMB,
ARXG25/35CVMB, RXG25/35E2V1B, or ARXG25/35E2V1B)
S90
PCB
S80
S80
Cut J8 with nippers
or a similar tools.
Hexagonal
wrench
Liquid shut-off valve
Close
as shut-off
valve
Valve lid
2
3
8
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