Hitachi PSC-A1T Technical Catalogue

4 Individual remote controls
PC-ART
TCGB0106 rev.0 - 12/2014
125
4

Automatic COOL/HEAT mode procedure
Automatic COOL/HEAT mode must be congured as an optional function.
This function allows the system to be switched automatically to COOL/HEAT mode based on the difference between the tempera-
ture setting and the temperature of the suction air. If the intake air exceeds the temperature setting by 3 °C, the system will switch to
COOL mode and, if it is 3 °C less than the temperature setting, the system will switch to HEAT mode.
NOTE
• If the heating function is set to LOW, the overload protection devices will often shut-off the system. When this happens, set the fan
speed to HIGH or MED (medium).
• If the outdoor temperature is above 21°C, the system will not operate in heating mode.
• The temperature difference between the cooling and heating operations is quite considerable when this function is used. This func-
tion cannot therefore be used for air conditioning a room where accurate control of temperature and humidity is required.

Timer function procedure
• Setting the current date and time
1 Press the SELECT DAY ▼ button for at least 3 seconds to change from operation mode
to the current day setting mode. SET will be displayed and the day will ash. All of the
days of the week are displayed.
SET
Mon Tue
Wed
Thu Fri
Sat
Sun
000
:
2 Press the SELECT DAY ▼ button until the current day is ashing and press OK.
All the days will disappear except the selected day, and the time will start to ash.
SET
Mon Tue
Wed
Thu Fri
Sat
Sun
000
:
3 Press SELECT DAY/SCHEDULE ▲ ▼ to move the "hour" up and down; once set, press
OK. The "hour" will stop and the "minutes" will start to ash.
SET Wed

:
4 Press SELECT DAY/SCHEDULE ▲ ▼ again to set the "minutes" and, once set, press
OK again. The current time setting mode will end and the system will return to operation
mode. The "minutes" will be displayed and SET will turn off. The "seconds" will start to
count from zero.
Wed

:
COOL
A/C
HIGH
SET TEMP.
ºC
• Setting the timer schedules
1 Press the TIMER button. SET will be displayed and the rst schedule number "1" will
ash. The rest of the schedule numbers will remain xed.
NOTE
Pressing and holding the TIMER button for more than 3 seconds activates the weekday timer schedule
setting.
1234S
SCHEDULE
ON

OFF
SET

:

:
2 By pressing the SELECT SCHEDULE ▲ button, the schedule number will change in
sequence: [1][2][3][4][S][1]….,
- By selecting [S], the user can set the on/off time and the temperature change as a
means of saving energy (check the section on setting the temperature change).
- By pressing the TIMER button, SET and SCHEDULE are turned off and the system
switches to operation mode.
:
1234S
ADDS
SCHEDULE
RNkHR
ON

OFF
:
COOL
A/C
HIGH
SET
3 Pressing the OK button indicates the selected schedule number. The other schedule
numbers will switch off and the switch-on "hour" for the selected program will ash.
:
SET
1
SCHEDULE
ON

OFF
:
4 Press SELECT DAY/SCHEDULE ▲ ▼ to adjust the "hour" and, once set, press OK. The
"hour" will stop and the "minutes" will start to ash.
:
SET
1
SCHEDULE
ON

OFF
:

Hitachi PSC-A1T Specifications

General

Brand	Hitachi
Model	PSC-A1T
Category	Controller
Language	English