Thermostat Control - Daikin REYQ-TA Series Service Manual

Outline of Control (Indoor Unit)
9.4

Thermostat Control

9.4.1 Without Optional Infrared Presence/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
95
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)
SiUS371614E
Functions and Control