9-
3
.
Intermittent Operation Control for Indoor Fans of the Indoor Unit at Thermo-off
Side in Heating Operation
While heating operation is executed in two rooms, if room temperature reached the setup temperature in one
room and thermo-off occurred, the following operations start. (Refer to the figure below.)
1. The indoor unit of the room (A room) in which thermo-off did not occur starts a continuous operation with
the setup number of revolution.
2. The indoor unit of the room (B room) in which thermo-off occurred starts intermittent operation of the indoor fan.
The indoor fan operates with number of revolution of UL or SUL. Fan-ON time is 2 minutes and Fan-OFF
time is 2 to 4 minutes.
However if temperature of the indoor heat exchanger becomes over 55°C or more in B room, the indoor fan
stops the intermittent operation and starts continuous operation.
While heating operation is executed in 2 rooms, if room temperature reached the setup temperature in both
rooms and thermo-off occurred, both indoor units start intermittent operation of the indoor fan.
T on=2 min.
A room
Thermo-ON continues
0 rpm
0 rpm
B room thermo-ON
↓
Thermo-OFF
↓
Thermo-ON
Indoor fan: Operates with setup number of revolution
B room thermo-OFF
B room thermo-ON
Operated with setup number
of revolution
∗
1 Operated with UL or SUL
Fan stop
T off
T off
T off
T on
T on
T on
UL
(
∗
1)
UL
(
∗
1)
UL
(
∗
1)
Fan stop
Fan stop
∗
In case which Tc sensor temperature exceeds 55˚C
in B room, the fan stops intermittent operation and
starts continuous operation with UL or SUL (
∗
1).
2 min.
3 min.
4 min.
To < 5˚C
5 < To < 10
10 < To
T off time
Item
Operation flow and applicable data, etc.
Description
The following settings are availiable by DIP switch setup.
11.
Various setting
on outdoor unit
(Power save,
Cooling-only, etc.)
Caution:Set the switch before turning on the power supply.
Function
Power save
setup
Setting position
Control contents
Turn the switch to ON, when using the power save function.
SW802
No.1
ON
ON
OFF
OFF
No.2
OFF
ON
ON
OFF
Current limit
11A
8.5A
Full
Full (Default)
When using the air conditioner as a cooling-only
conditioner, turn the switch to ON.
(If the heating mode is selected by remote controll, outdoor
unit will remain stop. If mixed with indoor unit cooling and
heating, outdoor unit performs cooling operation.)
When using the air conditioner as a heating-only
conditioner, turn the switch to ON.
(If the cooling mode is selected by remote controll, outdoor
unit will remain stop. If mixed with indoor unit cooling and
heating, outdoor unit performs heating operation.)
Cooling-only
setup
Heating-only
setup
SW802
1
2
3
4
ON
OFF
SW801
Cooling only setting
Heating only setting
1
2
3
4
ON
OFF
Select current limit
Power save function
FILE NO. SVM-15073
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Содержание RAS-4M27S3AV-A
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