Hitachi RAC-P25YHAB, Manual

Page: 14 / 65

●
●
●
■
FrostWash (Auto mode)
※ It depends on the conditions of the room.
The process of FrostWash
About 8 min
About 20 min to 90 min.
Operation such as
cooling operation
Freezing and thawing heat exchanger
Auto Stop
Running Stop
The deflector remain open during fan operation, freezing, thawing.
●
If you want to stop FrostWash operation, press the (Start/Stop) button twice.
●
lamp on the indoor unit lights up during FrostWash operation.
FrostWash auto start conditions
Accumulated operating hours of the air conditioner have exceeded 42 hours
operation
H
or not in room for 15 minutes uman sensor detects somebody is in room for 15 minutes and over times;
FrostWash start
FrostWash end
●
When pressing the button such as cooling during FrostWash operation, FrostWash operation is discontinued
and start the cooling operation after about 3 minutes.
●
When FrostWash is stopped during FrostWash operation, the unit automatically restart FrostWash operation at
the next operation stop.
●
In order to protect the product, FrostWash function cannot be carried out again for about 60 minutes after Frost
Wash operation is completed.
●
When the outdoor temperature or indoor humidity are not suitable for FrostWash operation, only fan operation
is carried out, FrostWash operation will be done again at the next operation stop.
●
Sometimes the heat exchanger may not freeze depending on the conditions of the room.
●
When the ON timer reaches the set time during FrostWash operation, it will stop the FrostWash operation and
start the operation of setting mode.
●
If the interval of the Off to On timer is less than 2 hours, FrostWash operation may not be completed. In
that case, it will restart FrostWash operation at the next operation stop.
To be to normal FrostWash (Auto mode) interval (42 hours), please stop operation of air conditioner and
operate FrostWash (Auto mode) or FrostWash (Manual mode).
4
" "
The dust and dirt adhering to indoor heat exchanger which is the cause of the smell. They are washed away
by freezing and thawing of the heat exchanger.
FrostWash function can work when the outdoor temperature is 1
℃ to
43
℃
and Indoor humidity is 30% to 70%.
There are two kinds of FrostWash operation, auto mode and manual mode.
Fan operation
Air conditioner is operated for more than 30 minutes and stops, such as cooling
FROSTWASH OPERATION
FrostWash start
FrostWash end
About 20 min to 90 min. About 8 min
not in room
About 30 minutes or more
Operation such as
cooling operation
Operation such as
cooling operation
Last FrostWash
Running Stop Running Stop
Auto Stop
15 min
detect human
in room or not in room
FrostWash
About 20 min to 90 min.
Auto Stop
FrostWash
in room in room
detect human
in room or
not in room
Fan operation
15 min
in room
detect human
in room or
not in room
Fan operation
15 min
in room
detect human
in room or
not in room
Fan operation
Fan operation
15 min
Fan operation
Accumulated operating hours of the air conditioner
have exceeded 42 hours
FrostWash end
- 14 -