Automatic Control For Heating And Cooling - Sanyo CHDZ07263 Service Manual

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 temperature.
Room temperature Set temperature + 2
Set temperature – 2 < Room temperature
Room temperature < Set temperature – 2
*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 differ-
ence 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 + 4°F (cooling opera-
tion) or – 4°F (heating operation).
Example: Temperature set on the remote controller is 68°F.
Selected operating mode
1 Cooling
2 Heating
(3) Operating mode changes (heating
changes are handled as shown below.
Heating cooling: Room temperature
Cooling heating: Room temperature
Example: Temperature set on the remote controller is 68°F.
Operating mode change
1 Heating Cooling
2 Cooling Heating
*2: During heating operation when the body sensor is used, a temperature shift is applied to the intake temperature
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 7°F, then the heating
occurs when the temperature detected by the body sensor is 80°F or higher.
(4) Cooling (heating) operation does not change if the room temperature changes from area C
minutes after the compressor turns OFF. (Monitoring mode is excepted.)
Cooling
Set temperature + 2
Heating
Shifted set temp. Remote controller display
72°F
64°F
cooling, cooling heating) which occur during operation as a result of temperature
Shifted set temperature (set temperature + 4°F + 1°F
Shifted set temperature (set temperature – 4°F – 2°F
Shifted set temp.
68 + 4 + 1 = 73°F or higher (*2)
68 – 4 – 2 = 62°F or lower
Selected operating mode
Shifted set temp
Remote controller display
Shifted set temp
Selected operating mode
Thermostat
2 - 3
Monitoring mode (*1)
68°F
68°F
A (or A
A
+6 deg
+5 deg
+4 deg
+2 deg
B
–2 deg
–4 deg
–6 deg
C
ON OFF
ON OFF
Heating
Remote Control Functions
cooling change
C) within 10
ON OFF ON OFF ON OFF ON
Cooling Heating
1
2
3
4
5
6
7