Hitachi RAK-VJ25PHAT Instruction Manual page 16

FrostWash Operation
Is the total operation time of the air conditioner beyond default setting when the
air-conditioner is operated for about 30 minutes and stopped?
The FrostWash be started that must to meet with the follow conditions.
FrostWash
Operation
Does not change to non -automatic "FrostWash"?
does not start
Does it happen after "sleep" and "time off"?
Automatic "FrostWash" interval becomes longer. Please operate manual
"FrostWash" with remote controller.
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 temperature change
during FrostWash
and the fin of the heat exchanger is frozen and thawed.
operation
Repeat for 1 second on and 1 second off for 10 seconds
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,
Mold Guard operation
for less than 10 minutes, the Mold Guard operation will not start even if the air
does not start
conditioner is in off mode.
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.
During Mold Guard
If Mold Guard operation stop at middle point, FrostWash and Filter sign indicator will
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
indoor FrostWash
Accumulated operating hours of
Accumulation time
the air conditioner have exceeded
about 42 hours
The room temperature
The humidity in the room
The outside temperature
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.
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outdoor FrostWash
auto operation.
Accumulated power supply
of the air conditioner have
exceeded
about 10~32 ℃ about
about 30~70% it does not request.
℃
about 1~43 about
auto operation
about 60 days
5~25 ℃
℃
5~25