Processes And Functions; Room Temperature Control; (A) Cooling - Sanyo SPW-XR253GH56 Technical Data & Service Manual

2-1 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

BODY SENSOR
T+1°C
SET TEMP. T°C
T–1°C
COMPRESSOR
1
1
OUTDOOR FAN
(H, M or L)
INDOOR FAN
DRAIN PUMP
1 2
DEW PROOF
HEATER
3
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.
For 5 minutes after the compressor is first turned on, and for 3 minutes after it is turned off,
4
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
Thermo OFF: When the room temperature is –1°C below the set temperature T˚:
5
THERMO. OFF
(THERMO. ON)
MORE THAN
3 MINUTES
5 MINUTES
ON OFF
ON OFF
ON OFF
ON OFF
1. Refer to 2-4 Outdoor Fan Speed Control
Chart Summary and Explanations
the set temperature T˚, (T˚+1°C or T˚+2°C when set on body sensor):
Compressor
Compressor

2. Processes and functions

(THERMO. OFF)
ROOM TEMP.
MORE THAN
5 MINUTES
3 MINUTES
ON OFF
ON OFF
SET SPEED
ON OFF
ON OFF
ON
OFF
II - 2
THERMO. ON
MORE THAN
5 MINUTES
ON
ON
ON
ON
1573_X_S
Fig. 1
SM830080