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13.3. Protection Control For Heating Operation
13.3.1. Intake Air Temperature Control
Compressor will operate at maximum frequency if below conditions occur:
1. When the indoor intake air temperature is 30qC or above.
13.3.2. Outdoor Air Temperature Control
The maximum current value is regulated when the outdoor air temperature rises above 14qC in order to avoid compressor
overloading.
13.3.3. Overload Protection Control
The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures.
13.3.4. Cold Draught Prevention Control
When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced.
13.3.5. Deice Operation
When outdoor pipe temperature and outdoor air temperature is low, deice operation start where indoor fan motor and outdoor fan
motor stop and operation LED blinks.
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