Thermostat Control - Daikin VRV EMERION RXYQ-AATJA Service Manual

Outline of Control (Indoor Unit)
9.4

Thermostat Control

The thermostat ON/OFF differential value (factory setting) differs depending on the models.
9.4.1 Without 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 ≥ 24.5°C (76.1°F)
FXZQ-TB, FXUQ-PA, FXSQ-TB, FXMQ-TB, FXTQ-TA, CXTQ-TA only
If the field setting 11 (21)-12 (for FXZQ-TB, FXUQ-PA, FXSQ-TB, FXMQ-TB) or 14 (24)-5 (for
FXTQ-TA, CXTQ-TA) is set to 02, Tro will be the same as the cooling set temperature.
ΔT = Room temperature – Remote controller set temperature
Tro: Room temperature at the start of dry operation
Tr: Room temperature
1: The thermistor for room temperature detection depends on the field setting 10 (20)-2.
129
Differential value
1°C (1.8°F) FXFQ-T, FXEQ-P, FXHQ-M, FXTQ-TA
FXZQ-TB, FXUQ-PA, FXDQ-M, FXSQ-TB, FXMQ-PB, FXMQ-TB, FXMQ-M,
0.5°C (0.9°F)
FXAQ-P, FXLQ-M, FXNQ-M, FXMQ-MF, CXTQ-TA
Normal operation
(Thermostat ON)
Normal operation
(Thermostat ON)
Tr < Tro – 1.0˚C (–1.8˚F)
Dry operation
Tr > Tro + 1.0˚C (+1.8˚F)
Tr < Tro – 1.5˚C (–2.7˚F)
Dry operation
Tr > Tro + 0.5˚C (+0.9˚F)
Tr < Tro – 1.0°C (–1.8°F)
Dry operation
Tr > Tro + 1.0°C (+1.8°F)
ΔT ≤ –1.0˚C (–1.8˚F)
Thermostat OFF
ΔT ≥ +1.0˚C (+1.8˚F)
ΔT ≥ +1.0˚C (+1.8˚F)
Thermostat OFF
ΔT ≤ –1.0˚C (–1.8˚F)
Thermostat OFF
Thermostat OFF
Thermostat OFF
Model
Part 4 Functions and Control
SiUS342303E