Thermostat Control - Daikin RXYQ-TA Series Service Manual

Outline of Control (Indoor Unit)
8.4

Thermostat Control

8.4.1 Without Optional Infrared Floor Sensor
Whether the thermostat is turned on or off is determined by the difference between the remote
controller set temperature and the actual detected room temperature (∗1).
Normal operation
· Cooling operation
· Heating operation
Dry operation
· When Tro < 24.5°C (76.1°F)
· When Tro
FXTQ-TA only
If the field setting 14(24)-5 is set to 02, Tro will be the same as the cooling set temperature at the
time of starting dry operation.
∗1: The thermistor for room temperature detection depends on the field setting 10(20)-2.
∗2: Description of symbols
77
Normal operation
(Thermostat ON)
Normal operation
(Thermostat ON)
Dry operation
≥
24.5°C (76.1°F)
Dry operation
Dry operation
∆
T : Room temperature – Remote controller set temperature
Tro : Room temperature at the start of dry operation
Tr : Room temperature
∆T ≤ –1.0˚C (–1.8˚F)
Thermostat OFF
∆T ≥ +1.0˚C (+1.8˚F)
∆T ≥ +1.0˚C (+1.8˚F)
Thermostat OFF
∆T ≤ –1.0˚C (–1.8˚F)
Tr < Tro – 1.0˚C (–1.8˚F)
Thermostat OFF
Tr > Tro + 1.0˚C (+1.8˚F)
Tr < Tro – 1.5˚C (–2.7˚F)
Thermostat OFF
Tr > Tro + 0.5˚C (+0.9˚F)
Tr < Tro – 1.0˚C (–1.8˚F)
Thermostat OFF
Tr > Tro + 1.0˚C (+1.8˚F)
SiUS341615E
Functions and Control