Hitachi RAK-DJ18PHAE Manuel page 16

FrostWash Operation
It does not wash when outside temperature is less than about 1 degrees Celsius or
more than 43 degrees Celsius.
It does not wash when the humidity in the room is about 30% or less or about 70% or
more.
FrostWash Operation
When "FrostWash" is done by operating a remote controller, it does not wash
does not start
when the room temperature is less than about 10 degrees Celsius or more than
about 32 degrees Celsius.
Within 60 minutes after the end of "FrostWash", "FrostWash" is not operated for
product protection.
Noise occurred
It is the sound that the internal machine is inflated and contracted by the
during FrostWash
temperature change and the fin of the heat exchanger is frozen and thawed
operation
Repeat for 1 se
Because "FrostWash" can not work when operating the "FrostWash" with remote
controller.
(Clean Function
Lamp) blinks
Repeat for 4 seconds on and 1 second off for 15 seconds
Because FrostWash has not been done for a long time.
Operate the remote controller to operate "FrostWash".
Mold Guard Operation
If the air conditioner operation is stopped after heating operation, Mold Guard will not
operate.
If the air conditioner has operated in cooling and drying mode, including auto mode,
for less than 10 minutes, the Mold Guard operation will not start even if the air
Mold Guard operation
conditioner is in off mode.
does not start
If operation of the air conditioner is stop by OFF Timer or GoodSleep Timer, the Mold
Guard will not operate.
If ON Timer is set and on time is within about 2 hours, the Mold-Guard will not operate.
If Mold Guard operation stop at middle point, FrostWash and Filter sign indicator will
During Mold Guard
turn off.
The horizontal deflector remain open.
Room temperature or humidity may rise.
Depending on situation, Mold Guard will operate with Fan Mode.
When there would be the window near indoor unit, the water might condense on the
Notes
window during Mold Guard. If necessary, to cancel Mold Guard.
When after FrostWash operation, the water inside the indoor unit evaporates and,
depending on the room conditions, may emitted as steam. But this is not a
malfunction. If necessary, to cancel Mold-Guard.
The following phenomena do not indicate unit failure.
During heating, the operation
indicator blinks and air blow stops
Hissing or fizzy sounds
Squeaking noise
Rustling noise
Clicking noise
cond on and 1 second off for 10 seconds
The air conditioner is operating
·
Outside air temperature, room temperature and room humidity are not
·
suitable for "FrostWash"
It has not been over 60 minutes since the end of "FrostWash"
·
(Clean Function Lamp) on the indoor unit lights up during Mold Guard operation.
<Operation start>
The unit is preparing to blow warm air. Please wait.
<In operation>
The outdoor unit is defrosting. Please wait.
Refrigerant flow noise in the pipe or valve sound generated when flow rate is
adjusted.
Noise generated when the unit expands or contracts due to temperature changes.
Noise generated with the indoor unit fan's rpm changing such as operation start
times.
Noise of the motorized valve when the unit is switched on.
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