4. FUNCTIONS
4-1 Room temperature control
The unit adjusts room temperature by turning the outdoor unit’s compressor ON and OFF. This process is
controlled by the thermostat located in the indoor unit. The figures on this and the next page show how each
part of the system performs as the room temperature changes and the thermostat activates the compressor to
start (thermo ON) or stop (thermo OFF). Fig. 1 shows about the cooling cycle, and Fig. 2 shows about the
heating cycle.
(A) Cooling
Fig. 1
(THERMO. OFF)
(THERMO. ON)
ROOM TEMP.
THERMO. ON
5 MINUTES
MORE THAN
5 MINUTES
3 MINUTES
T+1°C
T-1°C
SET TEMP . T °C
COMPRESSOR
OUTDOOR FAN
(H, M or L)
INDOOR F AN
OFF
OFF
OFF
OFF
1
1. Refer to 2-4 Outdoor Fan Speed Control
MORE THAN
3 MINUTES
MORE THAN
5 MINUTES
ON
ON
ON
ON
ON
ON
SET SPEED
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
DRAIN PUMP
DEW PROOF
HEATER
BODY SENSOR
1573_X_S
THERMO. OFF
Chart Summary and Explanations
Once the compressor Starts, it keeps running for 5 minutes.
Once the compressor stops, it will not start running again for 3 minutes.
If you change the operation mode ( HEAT, DRY, COOL, or FAN ) during the cooling cycle,
the control circuit stops the compressor for 3 minutes.
the compressor is not controlled by the room sensor.
Thermo ON: When room temperature rises 1°C (2°C when set on body sensor) above
the set temperature T°, (T°+1°C or T°+2°C when set on body sensor):
Compressor
ON
Thermo OFF : When the room temperature is -1°C below the set temperature T°:
Compressor
OFF
15
