Hitachi RAC-07G4, Service Manual

Page: 39 / 70

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-1
-2
-3
-4
0.66 deg
0.33 deg
Set temperature
ON/OFF Switch
Fan Speed L
Power relay
Stick relay
Operation lamp
30 sec
2 sec
2 sec
Dry lamp
30 sec
+3
+2
+1
-1
-2
-3
Set temperature
ON / OFF Switch
Fan Speed L
Power relay
Stick relay
Operation lamp
L L L
30 sec
Dry lamp
30 sec
2 sec 2 sec 2 sec
On / Off switch On / Off switch
Fan Speed
Fan Speed
Stick relay Stick relay
ON / OFF switch ON / OFF switch
Operation lamp
Operation lamp
Operation and stop are repeated independent of timer reservations
ON / OFF switch ON / OFF switch
Reservation
Reservation
Cancel
Cancel
Operation lamp
Operation lamp
Timer lamp
Timer lamp
Timer memory
Timer memory
(OFF timer during stop) (OFF timer during stop) (Cancel) (Change of the reservation time)
ON / OFF switch ON / OFF switch
Reservation
Reservation
Cancel
Cancel
Operation lamp
Operation lamp
Timer lamp
Timer lamp
Timer memory
Timer memory
(ON timer during operation) (ON timer during operation) (Cancel) (Cancel) (Change of the reservation time) (Change of the reservation time)
ON / OFF switch ON / OFF switch
Reservation
Reservation
Cancel
Cancel
Operation lamp
Operation lamp
Timer lamp
Timer lamp
Timer memory
Timer memory
(OFF ON timer) (OFF ON timer) (ON OFF timer) (ON OFF timer) (ON OFF timer during operation) (ON OFF timer during operation)
(OFF ON timer during stop) (OFF ON timer during stop)
PM1:00 PM3:00 PM5:00 PM1:00 PM3:00 PM5:00 PM1:00 PM3:00 PM5:00 PM1:00 PM3:00 PM5:00 PM1:00 PM3:00 PM5:00 PM1:00 PM3:00 PM5:00 PM1:00 PM3:00 PM5:00 PM1:00 PM3:00 PM5:00
Operation mode
Control function
Fan Cooling Sensor dehumidification Circulation Automatic
1
ON / OFF switch,
basic mode
2
Timer
operation
ON timer
OFF timer
OFF
→
ON
timer
Automatic
MED
LO
HI
• Operation in “HI” mode
• Operation in “MED” mode
• Operation in “LO” mode
• Same as on the left.
• Same as on the left.
• Same as on the left.
• Only circulation with cut
velocity is executed,
independent of the
thermostat signal.
(1) Strong
3
Fan speed
mode
Thermostat operation
H
→
HI
M
→
MED
L → LO
• The power relay is
delayed by 2 seconds
from the start of
thermostat.
(1) In case of “Automatic” mode
Note:
• The min. ON time of the power relay
is 3 minutes, and the min. OFF time
also is 3 minutes.
(2) In other modes than “Automatic”
Same as above (but operation is
made with the velocity set at the
time of operation start).
• “HI”, “MED”, or “LO” operation is
executed according to the thermostat
signal. (Refer to “Thermostat operation”.)
→
• “LO” and “Stop” are repeated according to the thermostat
signal, independent of the setting.
Notes:
• Forced operation by ON / OFF
button ON is executed even
with thermostat OFF.
• The room temperature 30 sec
after operation start, minus
0.66 deg, becomes the set
temperature.
• When the room temperature
is 16
°
C or lower, 16
°
C
becomes the set temperature.
• The other operations are the
same as for (1).
• Repetition of “HI” and “Stop” by means of thermo signal and time.
•
Repetition of “MED” “Stop” by means of thermo signal and time.
•
Repetition of “LO” “Stop” by means of thermo signal and time.
• The “Automatic” speed mode for
each operation mode is used
independent of the setting.
(“LO” at the time of “Sensor
dehumidification”.)
• The operation mode at the start
of operation differs as shown
below according to the room
temperature.
Notes
• A shift is not accepted at the
time of operation start.
• There is no switching between
modes after start of operation.
• When the operation is started
again within 20 hours after stop
with the ON / OFF button,
operation will be executed in the
previous mode.
• The operation details are the
same as for each operation
mode.
• The set temperature is set with
the room temperature adjustment
button. Correction by V,
±
3
°
C is
possible with. At this time, the
operation mode judgement
temperature also is shifted at the
same time. However, correction
is possible only in cooling
operation mode, but not in
“Sensor dehumidification” mode.
(2) Set temperature is higher than room temperature.
(1) When the set temperature is lower than the room temperature.
4
BASIC MODE
MODEL RAS-07G4/09G4/14G4//RAC-07G4/09G4/14G4
Notes:
• The min. ON time of the power relay is 3 minutes, and the min.
OFF time also is 3 minutes.
• The indoor fan is not delayed with operation start by ON / OFF
button.
Cooling The set temperature
shall be 27
°
C.
Sensor The set temperature
dehumidi- shall be 2 degrees
fication
below the room
temperature at the
start of operation.
No.
Room temperature
at the start of
operation
→
→
+3
+2
+1
-1
-2
-3
Set temperature
ON / OFF Switch ON / OFF Switch
Fan Speed H
Fan Speed M
Fan Speed L
Power relay
Stick relay
Operation lamp
H L M L M H L
L M M L M M
2 sec 2 sec 2 sec
2 sec
+3
+2
+1
-1
-2
-3
Set temperature
ON / OFF Switch
Fan Speed L
Stick relay
Operation lamp
L L L L
❈
Both operation lamp and Dry lamp light during Sensor
dehumidification at operation mode.