Main Functions SiUS091133
35 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 the zone A.
Thermostat ON Condition
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>
FTXS series
FDXS series
<Heating>
Refer to “Temperature Control” on page 28 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
A
OFF
ON
C
Room thermistor temperature – target temperature
–1.5˚C (–2.7˚F)
(R16693)
Cooling : –1.0˚C (–1.8˚F)
Dry : –1.0˚C (–1.8˚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
ONON
CC
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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