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Hitachi RAS-25QH1 Technische Information Seite 191

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AUTO FRESH DEFROSTING
Auto Fresh Defrosting is carried out : the
system checks the outdoor heat exchanger
and defrosts it as necessary before stopping
operation.
After the ON/OFF button is pressed to stop
heating, the outdoor unit is still working with
the HOT KEEP lamp lighting.
Fan speed does not change when fan
speed selector is changed during auto
operation.
At this point fan speed is automatic.
This is because "Nice temperature reservation"
function is operating. This function starts operation
earlier so the preset temperature is reached at the
preset time. Operation may start maximum 60 minutes
before the preset time.
When on-timer has been programmed,
operation starts before the preset time has
been reached.
Does "Nice temperature reservation"
It does not work. It works only during cooling and
function operate during dehumidifying?
heating.
This is because "Nice temperature reservation"
function is operating. The start time varies according
to the load of room. Since load varies greatly during
heating, the operation start time is corrected, so it will
vary each day.
Has the clock been set? Timer cannot be
set unless the clock has been set.
{
The current time display
The current time disappears
When the current time is set,
in approx. 10 seconds. The
the display flashes for approx.
time set display has priority.
3 minutes.
disappears soon.
The timer has been programmed, but the
Is the current time past the preset time?
Preset time disappears.
When the preset time reaches the current tire, it
disappears.
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