SiUS04-924_A Main Functions
20 Function and Control
1.7 Thermostat Control
Thermostat control is based on the difference between the room thermistor temperature and the
target temperature.
Thermostat OFF Condition
The temperature difference is in zone A.
Thermostat ON Condition
The temperature difference is above zone C after being in 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 zone B.
(Cooling / Dry: 10 minutes, Heating: 10 seconds)
<Cooling / Dry>
<Heating>
Refer to “Temperature Control” on page 13 for detail.
B
A
OFF
ON
C
Room thermistor temperature – target temperature
–1.5˚C (–2.7˚F)
(R14452)
Cooling : –0.5˚C (–0.9˚F)
Dry : –0.5˚C (–0.9˚F)
Cooling : –2.0˚C (–3.6˚F)
Dry : –2.5 ~ –2.0˚C (–4.5 ~ –3.6˚F)
B
B
A
A
OFF
OFF
ON
ON
C
C
2.0˚C (3.6˚F)
0.5˚C (0.9˚F)
1.5˚C (2.7˚F)
Room thermistor temperature – target temperature
(R14451)
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