Cool" Position; Heat" Position - Fujitsu Airstage VR-II Series Service Manual

3-2-4 "COOL" Position

When using the cooling mode, set the temperature to a value lower than the current room temperature, otherwise
the indoor unit will not start the cooling operation and only the fan will rotate.
An example for COOLING TEMPERATURE CONTROL time chart (Manual setting)
Ts +1°F(+0.5°C)
Temperature Ts
Ts -1°F(-0.5°C)
3Min.
Refrigerant ON
flow OFF
100%
Opening of
0%
EEV
ON
Indoor fan*1
OFF
Ts : Corrected setting temperature
T : Corrected room temperature
R
*1 When Cooling Thermo-OFF(Fuction setting) activates, the Indoor fan stops under the temperature controlling.
(The room temperature detection in the wired remote controller has to be activated.)

3-2-5 "HEAT" Position

(1) When using the heating mode, set the temperature to a value higher than the current room temperature, otherwise
the indoor unit will not start the heating operation.
(2) After the start of heating operation, the fan of indoor unit will not rotate until the heater exchange is warmed up to
blow out warm air.
During defrosting, the OPERATION indicator lamp flashes 6 sec. ON and 2 sec. OFF, and repeat. The heating operation
(3)
will be temporarily interrupted.
An example for HEATING TEMPERATURE CONTROL time chart (Manual setting)
Ts +1°F(+0.5°C)
Temperature Ts
Ts -1°F(-0.5°C)
Refrigerant ON
flow OFF
100%
Opening of
0%
EEV
ON
Indoor fan*1
OFF
Ts : Corrected setting temperature
: Corrected room temperature
T
R
: Duration of cold air prevention*2
*1 When the room temperature detection in the wired remote controlle activates, the Indoor fan stops at the thermo -
OFF condition.
*2 When the cold air prevention (Fuction setting) invaldiates, the Indoor fan keeps the operation by the setting.
4Min. 1Min.
4Min. 1Min.
T
R
Ts +1°F(+0.5°C) : The thres hold temperature of start of refrigrant flow
Ts -1°F(-0.5°C)
: The thres hold temperature of stop of refrigrant flow
4Min. 1Min.
Ts +1°F(+0.5°C) : The thres hold temperature of start of refrigrant flow
Ts -1°F(-0.5°C)
: The thres hold temperature of stop of refrigrant flow
03-06
T
R