Wireless Remote Controller; Common/Others - Hitachi RAS-25CNH1 Service Manual

Q15
Even when the reserved time is the same,
the system turns on at a different time.

Wireless remote controller

Q16
The timer setting cannot be done.
Q17
The present time display is turned
off too soon.
Q18
The reserved time is erased though the timer
was set.

Common/Others

Q19
In the auto fan speed mode, the
fan speed changes over between
"Hi", "Med" and "Lo".
Q20
The noise from the outdoor gets louder at the
start of operation.
Q21
The noise of the outdoor unit changes from
time to time.
Q21
The room temperature differs from the preset
temperature set by the room temperature
control.
Q21
The air does not come out immediately after
starting operation.
A15
The Nice temperature reservation is working correctly.
The turn-on time varies depending on the conditions of the
room. In the heating operation, since the system
calculates and corrects the starting time to reach the
preset temperature at the reserved time under the current
conditions, the operating time is defferent every day.
A16
Has the present time been set?
If the clock is not set, the timer cannot be set.
A17
The present time display
appears for about 10 seconds.
The timer set display has
priority.
A18
The reserved time may have been passed.
When the present time reaches the reserved time, the
reserved time is erased.
A19
This is not a problem. The
system automatically controls
the fan speed to protect the
blowing out of cold air.
A20
This is not a problem. Since the compressor is operated at
full speed to increase heating/cooling capacity when
starting operation, it gets louder.
A21
This is not a problem. The speed of the compressor varies
depending of the temperature difference between the
preset temperature of the thermostat and the room
temperature.
A22
The room temperature may differ from the preset
temperature due to the structure of the room, air flow
condition, etc.
If there is a difference, adjust the preset temperature to
obtain the optimum room temperature.
A23
After the power is turned on, when the heating or
dehumidifying operation is set, the unit performs heat-
running operation for 1 minute. In the heating operation,
the operation lamp blinks for this period. It is not a
malfunction.
– 90 –
When the present time is set,
the display blinks for about 3
minutes.
In the Auto fan speed mode,
the system detects the heat
exchange temperature and
automatically changes the fan
speed to "Hi", "Med" and "Lo"
when the temperature is low.