Processes And Functions; Room Temperature Control - Sanyo C1852 Service Manual

10. PROCESSES AND FUNCTIONS

(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 remote control unit.
The figures on this and the next pages show how each part of the system performs when the
room temperature changes and the thermostat activates the compressor to start (thermo ON)
or stop (thermo OFF). Fig. 8 shows about the cooling cycle.
S. T.+ 1 F
SET TEMP. T F
(S.T.)
COMPRESSOR
INDOOR FAN
OUTDOOR FAN
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 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 F above the set temperature T˚, (T ˚+1
Thermo OFF: When the room temperature is equal to or below the set temperature T˚:
WITHIN 3 MINUTE
THERMO ON
THERMO OFF
3 MINUTES
OFF
ON
ON OFF
Chart Summary and Explanations
ROOM TEMPERATURE
MORE THAN 3 MINUTES
MORE THAN
5 MINUTES
ON
SET SPEED (MANUAL)
ON
Compressor ON
Compressor OFF
– 27 –
THERMO ON
THERMO OFF
OFF ON
OFF ON
Fig. 8
1028_X_S
F):
SM830079