Hitachi RAM-36NP2A, Service Manual, Page: 23 / 87

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HEATING OPERATION
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Use the device for heating when the outdoor temperature is under 21°C.
When it is too warm (over 21°C), the heating function may not work in order to protect the device.
●
In order to maintain reliability of the device, please use this device when outdoor temperature is above
–15°C.
Press the MODE selector button so that the display indicates
(HEAT).
Set the desired FAN SPEED with the (FAN SPEED) button
(the display indicates the setting).
(AUTO) (HIGH) (MED)
(SILENT) (LOW)
Set the desired room temperature with the TEMPERATURE buttons
(the display indicates the setting).
The temperature setting and the actual room temperature may
vary depending on conditions.
Press the (START/STOP) button. Heating operation starts with
a beep. Press the button again to stop operation.
■ As the settings are stored in the memory of the remote controller, you
only have to press the (START/STOP) button next time.
■
During AUTO fan, the fan speed automatically changes as below:
●
When the difference between room temperature and setting temperature
is large, fan starts to run at HI speed.
●
After room temperature reaches the preset temperature, fan speed
will be changed to lower speed to obtain optimum room temperature
condition for natural healthy heating.
START
STOP
Defrosting will be performed about once an hour when frost forms on the heat exchange of the outdoor
unit, for 5~10 minutes each time.
During defrosting operation, the operation lamp blinks in a cycle of 3 seconds on and 0.5 second off.
The maximum time for defrosting is 20 minutes.
However, if the indoor unit is connected to multi type outdoor unit, the maximum time for defrosting is
15 minutes.
(If the piping length used is longer than usual, frost is likely to form.)
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2
3
Defrosting