Fujitsu AB*14LBAJ Service Instruction page 10

3. COOLING OPERATION
Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature,
as shown in Figure 1.
On the other hand, if switched in [HIGH]
operation modes QUIET, LOW, MED, HIGH,as shown in Table 2.
(Fig.1)
airflow change - over ( Cooling: AUTO )
TR-Ts > 2 degC
=
2 degC > TR-Ts > 1 degC
=
1 degC > TR-Ts
4. HEATING OPERATION
4-1. For AB/ AR/ AU/ AS Type
When the airflow is set to [AUTO], the indoor fan
motor operates [MED] mode.
Then the indoor fan motor will run according
to a room temperature, as shown in Figure 2.
On the other hand, if switched in [HIGH]
the indoor motor will run at a constant airflow
of [HEAT] operation modes QUIET, LOW, MED, HIGH,
as shown in Table 2.
4-2. For AB*F/ AR*F/ AU*F/ AS*A/ AG*F Type
Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature,
as shown in Figure 3.
On the other hand, if switched in [HIGH]
of [HEAT] operation modes QUIET, LOW, MED, HIGH, as shown in Table 2.
( Fig.3 : Airflow change - over ( Heating : AUTO ) )
TR-Ts > - 1 degC
=
- 1 degC > TR-Ts > - 2 degC
=
- 2 degC > TR-Ts
[QUIET], the indoor motor will run at a constant airflow of [COOL]
Hi mode
Me mode
Lo mode
When the room
temperature lowers
[QUIET],
[QUIET], the indoor motor will run at a constant airflow
When the room
temperature rises
Lo mode
Me mode
Hi mode
*(Me+ mode)
*For AS*A07/ 09/ 12/ 14/ 18LACM
01-07
*1
When the room
temperature rises
TR-Ts > 3 degC
=
*(TR-Ts > 2.5 degC)
=
3 degC > TR-Ts > 2 degC
*(2.5 degC > TR-Ts > 1.5 degC)
2 degC > TR-Ts
*(2 degC > TR-Ts)
*For AB*F/ AR*F/ AS*A/ AU*F/ AG*F Type
*1 : Contains a condition to the following
When the operation mode is set to AUTO mode
at the start of operation.
When the setting temperature was changed.
When the operation mode was changed to COOLING mode.
When the airflow mode was changed to AUTO mode.
( Fig.2 : Airflow change - over ( Heating : AUTO ) )
Indoor heat exchanger
temperature
Go up one-step
47°C
41°C
*(42°C)
Go down one-step
*For AS*7/ 9/ 12LMACW
When the room
temperature drops
TR-Ts > - 1.5 degC
=
- 1.5 degC > TR-Ts > - 2.5 degC
- 2.5 degC > TR-Ts
TR : Room temperature
Ts : Setting temperature
=
=
Hold
TR : Room temperature
Ts : Setting temperature
=