Hitachi RPC-1.5FSR - AIR FLOW DIRECTION; ADJUSTING VERTICAL DEFLECTOR; AUTOMATIC SETTING OF LOUVER; SWING LOUVER DIRECTION DURING HEATING OPERATION

6 AIR FLOW DIRECTION
6.1 ADJUSTING VERTICAL DEFLECTOR
The vertical deector which consist 3 sets of deector are
connected by the connecting rod. Adjust the vertical deectors
by hand to the required direction. To adjust them, stop swinging
the louver during the operation.
Connecting rod
Louver
Vertical deector
1 set
6.2 AUTOMATIC SETTING OF LOUVER
The swing louver is stopped and moved by controlling the
remote control switch. When “Stop” switch is pressed from
the remote control switch, the swing louver will be closed
automatically and the operation is stopped.
When “RUN” switch is pressed from the remote control switch,
the swing louver will be opened automatically. At this time, for
cooling, dry and fan operation, the indoor unit is operated with
the set temperature after the fan speed “SLOW” operation is
performed for approximately 20 seconds.
6.3 SWING LOUVER DIRECTION DURING HEATING OPERATION
The louver angle is xed horizontally during the heating operation.
• When the heating operation starts
• When the defrost operation starts
• When thermo-controller activates
Horizontal
When the discharge temperature is higher than 30 ºC, the louver
angle is automatically returned to the setting condition.
! CAUTION
Do not move the louver by hand. If moved, the louver mechanism will be
damaged and the air ow direction may not be set.
Louver
Do not move the louver
by hand
7 AUTOMATIC CONTROL
The system is equipped with the following functions.
• Three minute guard (enforced stoppage)
The compressor remains o󰀨 for at least 3 minutes once it
has stopped. If the system is started within approximately
3 minutes after it has stopped, the RUN indicator is
activated. However, the cooling operation or the heating
operation remains o󰀨 and does not start until after 3 minutes
has elapsed.
• Three minute guard (enforced operation)
If all indoor units of the system are Thermo-OFF within
approximately 3 minutes after compressor has started,
compressor is operated during 3 minutes continuously.
However, if all indoor units of the system are stopped by
remote control switch, compressor is stopped.
• Frost prevention during cooling operation
When the indoor unit is operated at low discharge air
temperature, the cooling operation may be changed to fan
operation for a while to avoid frost formation on the indoor
heat exchanger.
• Self-cleaning expansion valve
It is for self cleaning the expansion valve when the operation
is stopped at cooling. The sound which the refrigerant ows
may be heard from the indoor unit during the selfcleaning.
However it is not abnormal.
• Hot start during heating operation
To prevent cold air discharge in the room, the fan speed
is controlled from the slow position and the low position
and then to the set position according to the discharge air
temperature. At this time the louver is xed horizontally.
• During defrosting operation
When the outdoor unit is performing the automatic defrosting
operation, the indoor fan is stopped and the louver is xed
horizontally.
AIR FLOW DIRECTION
PMML0551 rev.4 - 07/2023 - A10762310A
5
EN