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Hitachi RAS-18GH5 - Basic Mode

Hitachi RAS-18GH5
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Operation mode
Control function
Fan Cooling Sensor dehumidi cation Heating Automatic
1
Start/stop button,
basic mode
2
Timer
operation
ON timer
OFF timer
OFF
ON
timer
Automatic
MED
LO
HI
Operation in the previous
circulation mode
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
Circulation
mode
Thermostat operation
H
HI
L
MED
S
LO
The power relay is
delayed by 2 seconds
from the start of
thermostat operation.
(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 start/stop
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).
Air-blow mode (A) (B)
H L H
L L L
S S L
Automatic L
X
L
“HI”, “MED”, “LO”, and “Stop” are repeated according to the thermostat
signal and time.
“HI”, “MED”, “LO”, and “Stop” are repeated according to the thermostat
signal and time.
“MED”, “LO”, and “Stop” are repeated according to the thermostat signal
and time.
“LO” and “Stop” are repeated according to the thermostat signal and time.
The “Automatic” speed mode
for each operation mode is used
independent of the setting.
(“Week” at the time of “Sensor
dehumidi cation”.)
The operation mode at the
start of operation differs as
shown below according to
the room temperature.
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 min. after
stop with the start/stop 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 dehumidi ca-
tion” mode.
(2) Set temperature is higher than room temperature.
(1) When the set temperature is lower than the room
temperature.
Example for “HI” circulation mode
4
Notes:
The min. ON time of the power relay is 3 minutes, and the min. OFF time
also is 3 minutes.
In automatic circulation mode, “HI” in section (B) occurs only the rst time.
BASIC MODE
MODEL RAS-18GH5/RAC-18GH5
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
start/ stop button ON.
The indoor fan is delayed by 5 sec with operation start by
thermostat operation.
Cooling The set temperature
shall be 27°C.
Sensor The set temperature
dehumidi- shall be 2 degrees
cation below the room
temperature at the
start of operation.
Heating The set temperature
shall be 23°C +
temperature shift
amount.
No.
5
6
Reversing valve lock protection
AIR BLOW CHANGE TO "H" FORCILY WHEN ENTERING "PD CUT 2"
AIR BLOW CAN BE CHANGED BY REMOTE CONTROL AFTER TEMP. T7.
AIR BLOW RETURNS TO THE SET SPEED AT T5.
All relays are stopped by low-
temperature input.
Not accepted during hot keep,
during compressor stop, during
defrosting and during forced
3 minutes.
Accepted only during heating
operation.
Recovery at the time of stop by
low-temperature input is reset
recovery.
The timer lamp ashes at the
time of stop.
– 41 –
Heating load reduction and Pd cut
Room temperature
at the start of
operation

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