Fujitsu Airstage J-II, Service Manual

Page: 45 / 209

3-1 FAN CONTROL
03-01
3-1-1 Fan Speed Setting
3. INDOOR UNIT OPERATION
AUTO
HIGH MED LOW
Press the FAN CONTROL button to set the fan speed.
Fan speed setting
3-1-2 "AUTO" Position
Fan speed zone
Hi zone
Med zone
Low zone
When the room
temperature decreases
When the room
temperature increases
3. DRY OPERATION
1. COOLING OPERATION
2. HEAT OPERATION
• Expansion
• valve
• Indoor fan
motor
ON
OFF
OPEN
CLOSE ON
ON
ON
ON ON ON
ON
ON
30s
30s
5s 3min 5s 2min30s
The indoor fan always rotates at "Lo" speed.
TIME -->
2
T
R
-T
S
1 2
T
R
-T
S
1
T
R
-T
S
2
T
R
-T
S
2 3
T
R
-T
S
3
T
R
-T
S
(1) When the T
S
is changed.
(2) When the operation mode is changed from other mode to "COOL".
(3) When the fan control is changed from other position to "AUTO".
The fan speed is determined automatically in accordance
with the condition "(T
R
(corrected room temperature) - T
S
(corrected set temperature)" as shown on the right.
However, the fan speed zone is determined in the manner
as the room temperature increases for the following cases.
Same as Cooling operation, fan speed is decided by the
difference between the room temperature and the set
temperature.
(1) The indoor fan starts operation 5 seconds after the electric expansion valve opens. However, when the indoor unit just
starts its operation or the operation mode is changed from other to "DRY" and the refrigerant circulation is not stopped,
the fan will rotate immediately without a delay time of 5 seconds.
(2) The indoor fan will stop in 30 seconds when the refrigerant circulation stops.
(3) The indoor fan will stop immediately when the indoor unit is stopped by pushing the stop button or by a setting of ON timer.
(4) When the refrigerant circulation is stopped due to a lower room temperature for more then 3 minutes, the fan will rotate
2 minutes at intervals of 3 minutes.
(5) When the indoor unit just starts its operation or the operation mode is changed from other to "DRY" and the refrigerant
circulation is stopped, the fan will rotate for 1 minute and then it will operate according to the statement (4).
2min
Fan speed zone
Low zone
Med zone
Hi zone
When the room
temperature decreases
When the room
temperature increases
-2
T
R
-T
S
-2 -3
T
R
-T
S
-3
T
R
-T
S
-2
T
R
-T
S
-1 -2
T
R
-T
S
-1
T
R
-T
S