3
3
- 4
Control of Mini ECO-i SYSTEM
1. Main Operating Functions
1-2. Automatic Control for Heating and Cooling
Automatic Heating/Cooling Control
(1) When operation starts, heating or cooling is selected according to the set temperature and the room tempera-
ture.
G
Room temperature
≥
Set tempe 1
→
Cooling
G
Set temperature – 1 < Room temperature
≤
Set tempe 1
→
Monitoring mode (*1)
G
Room temperature < Set temperature – 1
→
Heating
*1: If the difference between the room temperature and set temperature is small when operation starts, the
cooling thermostat remains in standby status (OFF) until the temperature difference increases. When the
temperature difference increases, either cooling operation or heating operation is selected. This standby
status is known as “monitoring mode.”
(2) After operation starts in the selected operating mode, the set temperature is automatically shifted by +2°C
(cooling operation) or –2°C (heating operation).
Example: Temperature set on the remote controller is 20°C.
(3) Operating mode changes (heating
→
cooling, cooling
→
heating) which occur during operation as a result of
temperature changes are handled as shown below.
G
Heating
→
cooling: Room temperature
≥
Shifted set temperature (set tempe 2°C) + 0.5°C
G
Cooling
→
heating: Room temperature
≤
Shifted set temperature (set temperature – 2°C) – 1.0°C
Example: Temperature set on the remote controller is 20°C.
*2: During heating operation when the body sensor is used, a temperature shift is applied to the intake temper-
ature detected by the sensor, in consideration for the difference in temperature at the top and bottom of the
room. (Refer to the “Room Temperature Control” item.) If this intake shift temperature is 4°C, then the
heating
→
cooling change occurs when the temperature detected by the body sensor is 26.5°C or higher.
(4) Cooling (heating) operation does not change if the room temperature changes from area C
→
A (or A
→
C)
within 10 minutes after the compressor turns OFF. (Monitoring mode is excepted.)
(5) When the heating/cooling
change occurs, the 4-way
valve switches approximate-
ly 30 to 50 seconds after the
compressor turns ON.
Shifted set temp
Shifted set temp
Selected operating mode
Selected operating mode
Remote controller display
–2 deg
–1 deg
+1 deg
+3 deg
+2 deg
+2.5 deg
–3 deg
Thermostat
ON
ON
OFF
ON
OFF
ON
OFF
ON
ON OFF
OFF
A
B
C
Heating
Heating
Cooling
Selected operating mode
Shifted set temp.
Remote controller display
1
Cooling
22°C
20°C
2
Heating
18°C
20°C
Operating mode change
Shifted set temp.
1
Heating
→
Cooling
20 + 2 0.5 = 22.5°C or higher (*2)
2
Cooling
→
Heating
20 – 2 – 1.0 = 17°C or lower
06-405 Mini-ECOi_TD3 11/6/06 6:18 PM Page 4
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