Sanyo SPW-C253GH5, Service Manual

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SM830035
2
2. Processes and functions
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
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 OR M)
INDOOR FAN
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
0671_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.
❑
For 5 minutes after the compressor is first turned on, and for 3 minutes after it is turned off,
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