9.2. OUTDOOR UNIT OPERATION (CU-2E15CBPG/2E18CBPG)
9.2.1. Compressor Operation Frequent
9.2.1.1. Cooling, Dry and Heating Operations
·
The compressor operation frequency is determined by room
temperature, capacity rank algebra and model code algebra.
1. When operation is started after the air conditioner has been
stopped for more than one hour, the air conditioner operates at a
high frequency which lowers the room temperature quickly for
cooling (or raises it quickly for heating) .
2. If, when two or more indoor units are operating, the thermostat is
set to OFF in one room, the automatic expansion valve is closed to
adjust the flow of refrigerant so as to control the room temperature.
3. When the thermostat is set to OFF during 1-room operation, the
compressor and fan of the outdoor unit are stopped. (The outdoor
unit fan is stopped 30 seconds after the compressor.)
4. It takes about 180 seconds to restart operation when the
compressor has been stopped. (Time delay safety control)
9.2.2. Deice Operation (Fuzzy Control) <Heating>
·
The extent of the frost is estimated from the operating time, temperature of the outdoor heat exchanger and outside air
temperature.
·
Highly efficient deice operation coped with to the frost condition is performed.
1. When the temperature of the outdoor unit heat exchanger falls below 3 °C, the de-icing timer is activated. When it comes
below the operation temperature continuously for 3 minutes after the timer setting has been reached, the deice operation
is started.
2. The 4-way valve is switched, and the frost is thawed out in the cooling cycle.
3. De-icing ends about 12 minutes after it started or when the temperature of the heat exchanger rises above 25 °C.
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CS-ME7CKPG / CS-ME10CKPG / CS-ME12CKPG / CS-ME14CKPG / CS-ME18CKPG / CU-2E15CBPG / CU-2E18CBPG / CU-3E23CBPG / CU-4E27CBPG
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