Indoor Unit Operation; Fan Speed Setting; Fan Control; Auto" Position - Fujitsu Airstage J-II Service Manual

3. INDOOR UNIT OPERATION

3-1 FAN CONTROL

3-1-1 Fan Speed Setting

Fan speed setting

3-1-2 "AUTO" Position

1. COOLING OPERATION
The fan speed is determined automatically in accordance
with the condition "(T
(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.
(1) When the T
S
(2) When the operation mode is changed from other mode to "COOL".
(3) When the fan control is changed from other position to "AUTO".
2. HEAT OPERATION
Same as Cooling operation, fan speed is decided by the
difference between the room temperature and the set
temperature.
3. DRY OPERATION
The indoor fan always rotates at "Lo" speed.
• Expansion
• valve
• Indoor fan
motor
(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).
Press the FAN CONTROL button to set the fan speed.
AUTO
(corrected room temperature) - T
R
is changed.
OPEN
ON
CLOSE
ON
ON
OFF
30s
HIGH MED
T
S
1
T
T
-2
T
ON
ON ON
5s 30s 2min30s 2min
03-01
LOW
Fan speed zone
Hi zone
-T
2
R S
Med zone
T -T
2
R S
Low zone
-T
1
R S
When the room
temperature decreases
Fan speed zone
Low zone
-T
-2
R S
Med zone
T -T
-3
R S
Hi zone
-T
-3
R S
When the room
temperature decreases
ON
ON
ON
3min 5s
T -T
3
R S
2 T -T
3
R S
T -T
2
R S
When the room
temperature increases
T -T
-1
R S
-1 T -T
-2
R S
T -T
-2
R S
When the room
temperature increases
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