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Fuzzy Operation (C/O Model)
• According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting
temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.
Compressor ON Temp
Compressor OFF Temp
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
26°C ≤ Intake Air Temp
24°C ≤ Intake Air Temp < 26°C
22°C ≤ Intake Air Temp < 24°C
18°C ≤ Intake Air Temp < 22°C
Intake Air Temp<18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the
temperature.
Fuzzy Operation (H/P Model)
• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since
the operation off, the operation mode is selected.
• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only
the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air
temp at that moment as follows.
24°C ≤ Inatake Air Temp
21°C ≤ Inatake Air Temp<24°C
Inatake Air Temp<21°C
• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10
sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
1) Fuzzy Operation for Cooling
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below
the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor
is turned on.
Compressor ON Temp
Compressor OFF Temp
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
26°C≤ Intake Air Temp
24°C≤ Intake Air Temp<26°C
22°C≤ Intake Air Temp<24°C
18°C≤ Intake Air Temp<22°C
Intake Air Temp<18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the tem-
perature.
Setting Temp + 0.5°C
Setting Temp + 0.5°C
25°C
Intake Air Temp + 1°C
Intake Air Temp + 0.5°C
Intake Air Temp
18°C
Fuzzy Operation for Cooling
Fuzzy Operation for Dehumidification
Fuzzy Operation for Heating
Setting Temp +0.5°C
Setting Temp + 0.5°C
25°C
Intake Air Temp + 1°C
Intake Air Temp + 0.5°C
Intake Air Temp
18°C
-14-
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Troubleshooting
