Hitachi RAC-25CNH11, Руководство по обслуживанию

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SERVICE CALL Q & A
MODEL RAS-25CNH11 /RAC-25CNH11
A1
Q2
Q3
Q1
Q5
A2
A3
A4
A5
Q1
Cooling operation
The compressor has stopped
suddenly during cooling
operation.
Dehumidifying operation
The fan speed cannot be changed.
Cool air is blown in the
dehumidifying mode.
The operation is not stopped
when the preset room
temperature is changed higher us-
ing the remote controller during
dehumidifying operation.
Check if frost has formed on
the indoor unit heat exchanger.
Wait 3
_
4 minutes until it is
defrosted.
If the air conditioner operates in
the cooling mode when it is
cold, frost may form on the heat
exchanger of the indoor unit.
The fan speed is fixed at "Lo" in the dehumidifying mode.
This is for higher dehumudifying efficiency. It is not a maifunction.
This is the case of
➁
in A4. A temperature slightfy lower than the
actual room temeprature becomes the set temperature and the
dehumidifying operaion is done if possible.
Though the preset room
temperature is set higher than
actual room temperature using
the remote controller,
dehumidifying operation is done.
The dehumidifying mode operates as follows by comparing the preset
room temperature and the actual room temperature.
➀
When room temperature > preset room temperature, operation is
done according to the preset room temparature of the remote
controller.
➁
When room temperature < preset room temperature, regardless
of the preset room temperature, a temperature slightly lower than
the actual room temperature automativally becomes the set
temperature.
Sin ce Q4 is the case of above
➁
, it is not possible to operate using
the room temperature control. Turn off using the Start/Stop switch
once, set the preset room temperature again, then turn on using the
Start/Stop switch.