Main Functions SiMT041509E
19 Function and Control
1.7 Thermostat Control
Outline Thermostat control is based on the difference between the room thermistor temperature and the
target temperature.
Detail Thermostat OFF Condition
The temperature difference is in the zone A.
Thermostat ON Conditions
The temperature difference returns to the zone C after being in the zone A.
The system resumes from defrost control in any zones except A.
The operation turns on in any zones except A.
The monitoring time has passed while the temperature difference is in the zone B.
(Cooling / Dry: 10 minutes, Heating: 10 seconds)
<Cooling / Dry>
<Heating>
Refer to Temperature Control on page 13 for detail.
Zone B
Zone A
OFF
ON
Zone C
Room thermistor temperature – target temperature
–1.5˚C
(R22110)
Cooling : –0.5˚C
Dry : –0.5˚C
Cooling : –2.0˚C
Dry : –2.5 ~ –2.0˚C
Zone A
OFF
ON
Zone C
2.0˚C
0.5˚C
1.5˚C
Room thermistor temperature – target temperature
(R22129)
Zone B