Fujitsu AB Series A18LATN User Manual

5-4. AUTO CHANGEOVER OPERATION
When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum
mode from among the HEATING, COOLING and MONITORING modes. During operation, the
optimum mode is automatically swiched in accordance with temperature changes. The temperature
can be set between 18°C and 30°C in 1 °C steps.
When operation starts, only the indoor fan is operated for 1 minute. (Air flow mode: S- Lo)
After 1 minute, depends on the room temperature and outdoor unit's operarion mode,
the operation mode is selected in accordance with the below.
( Table 4 : Operation mode selection table )
1
05-04
Room temperature :Tb
A zone
Tb > Ts +2 °C
Ts -2 °C > Tb
Ts +2 °C > Tb > Ts -2 °C
Monitoring
Monitoring
Heating
Ts : Setting temperature
( Table 4 : Operation mode selection table )
Room
temperature :TR
Room
temperature :TR
Operation
mode
TR > Ts +3.6°F
(2°C)
Ts +3.6°F > TR
(2°C)
=
=
=
Ts +3.6°F > TR > Ts-3.6°F
(2°C) (2°C)
Cooling
Monitoring
Heating
Operation
mode
Room
temperature :TR
Operation
mode
Monitoring
Heating
TR > Ts
=
Monitoring
Ts > TR
Cooling
TR > Ts
Ts > TR
Outdoor unit's
operation mode : Stop
Outdoor unit's
operation mode : Heating
Outdoor unit's
operation mode : Cooling
Ts : Setting temperature
マルチ用
B zone
Cooling
(Automatic Dry)
Monitoring
Heating
C zone
Monitoring
Monitoring
=
=
( Fig.5 : Operation mode selection based on Outdoor Temperature )
Cooling
(Automatic Dry)
[ For AB*A18/ 24LATN ]
A zone
B zone
C zone
32°C
-10°C
[ For AB*A36/ 45LATN ]
A zone
B zone
C zone
32°C
-15°C
Outdoor temperature zone
When COOLING was selected at , the air conditioner operates as follow:
The same operation as COOLING OPERATION of item 5-1 above is performed.
However, the setting temperature is raised 1°C and the room temperature correct coefficient value is 0°C
When the compressor frequency have been below 20Hz for 8 minutes or the room temperature reaches
"setting temperature -1.5°C" , operation is automatically switched to DRY OPERATION of item 5-3 above
is performed.
However, compressor control based on room temperature is as follows.
If the room temperature reaches "setting temperature +2°C" during DRY operation,
operation returns to COOLING operation.
When HEATING was selected at , the same operation as HEATING OPERATION of item 5-2
above is performed. However, the room temperature correct coefficient value is 0°C.
When the compressor was stopped for 6 consecutive minutes by the temperature control function
after the COOLING or HEATING operation mode was selected at above, operation is switched
to MONITORING and the operation mode is selected again.
1
2
3
1
4
1
Room
temperature
Compressor :ON
Compressor :OFF
Ts - 0.5°C
Ts - 1.5°C

Fujitsu AB Series A18LATN Specifications

General

Brand	Fujitsu
Model	AB Series A18LATN
Category	Air Conditioner
Language	English