Hitachi RAK-18REF Service Manual

AUTOMATIC OPERATION
The device will automatically determine the mode of operation, HEAT or COOL depending on the current room
temperature. The selected mode of operation will change when the room temperature varies.
However, the mode of operation will not change when indoor unit is connected to multi type outdoor unit.
VARIOUS FUNCTIONS
■ Auto Restart Control
●
If there is a power failure, operation will be automatically restarted when the power is resumed with previous
operation mode and airflow direction.
(As the operation is not stopped by remote controller.)
●
If you intend not to continue the operation when the power is resumed, switch off the power supply.
When you switch on the circuit breaker, the operation will be automatically restarted with previous operation
mode and airflow direction.
Note: 1. If you do not require Auto Restart Control, please consult your sales agent.
2. Auto Restart Control is not available when Timer or Sleep Timer mode is set.
■
As the settings are stored in the memory of the remote controller,
you only have to press the
(ON/OFF) button next time.
Press the MODE selector button so that the display indicates
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
the (AUTO) mode of operation.
●
When AUTO has been selected,
t
he
de
vice
will
a
ut
o
ma
tic
al
ly
determine the mod
e
of ope
ra
tio
n,
HEAT
o
HEAT
HEAT
r COOL
d
e
pe
n
di
ng
on
the c
ur
r
ent r
oom
t
em
pe
ra
tu
r
e. H
owever
th
e m
od
e of
operation will not change when indoor unit is connected to
multi type outdoor unit.
●
If the mode automatically selected by the unit is not
satisfactory, manually change the mode setting (HEAT,
DEHUMIDIFY, COOL or FAN).
Press the (FAN SPEED) button to select AUTO, HIGH, MED,
LOW or SILENT.
Press the
(ON/OFF) button.
Operation starts with a beep.
Press the button again to stop operation.
Set the desired room temperature with the TEMPERATURE
buttons (the display indicates the setting).
The temperature setting and the actual room temperature may
vary depending on conditions.
1
2
3
Set the desired FAN SPEED with the (FAN SPEED) button
(the display indicates the setting).
(AUTO)
(HIGH)
(MED)
(SILENT)
(LOW)
(AUTO)
(HIGH)
START
STOP
Temperature range can be set between 16°C and 32°C.
- 3 -
HEATING OPERATION
●
Use the device for heating when the outdoor temperature is under 21°C.
When it is too warm (over 21°C), the heating function may not work in order to protect the device.
●
In order to keep reliability of the device, please use this device above –15°C of the outdoor
temperature.
Defrosting will be performed about once an hour when frost forms on the heat exchange of the
outdoor unit, for 5~10 minutes each time.
During defrosting operation, the operation lamp blinks in cycle of 2 seconds on and 1 second off.
The maximum time for defrosting is 20 minutes.
However, if the indoor unit is connected to multi type outdoor unit, the maximum time for defrosting
is 15 minutes.
(If the piping length used is longer than usual, frost will likely to form.)
Defrosting
■
Press the MODE selector button so that the display indicates
(HEAT).
Set the desired FAN SPEED with the (FAN SPEED) button
(the display indicates the setting).
(AUTO)
(HIGH)
(MED)
(SILENT)
(LOW)
Set the desired room temperature with the TEMPERATURE buttons
(the display indicates the setting).
The temperature setting and the actual room temperature may
vary depending on conditions.
Temperature range can be set between 16°C and 32°C.
Press the
(ON/OFF) button. Heating operation starts with
a beep. Press the button again to stop operation.
■
As the settings are stored in the memory of the remote controller, you
only have to press the
(ON/OFF) button next time.
■
During AUTO fan, the fan speed automatically changes as below:
●
When the difference between room temperature and setting temperature
is large, fan starts to run at HI speed.
●
After room temperature reaches the preset temperature, fan speed
will be changed to lower speed to obtain optimum room temperature
condition for natural healthy heating.
1
2
3
(AUTO)
(HIGH)
START
STOP
- 4 -
9

Hitachi RAK-18REF Specifications

General

Brand	Hitachi
Model	RAK-18REF
Category	Air Conditioner
Language	English