Daikin VRV S RXQ4/5ARV1, Service Manual, Page: 86 / 377

Outline of Control (Indoor Unit) SiAF332111E
80 Part 4 Functions and Control
Note(s)
3. Outline of Control (Indoor Unit)
3.1 Set Temperature and Control Target Temperature
The relationship between remote controller set temperature and control target temperature is
described below.
Examples are given to illustrate a control target temperature that satisfies the remote controller
set temperature.
Regarding control target temperature
When using the infrared floor sensor, the temperature around people will be treated as the
control target temperature for operation.
What is the temperature around people?
The temperature around people refers to the temperature of the living space, obtained from the
temperature around the ceiling and the temperature underfoot. The temperature is calculated
using the detected values of the suction air thermistor and the infrared floor sensor.
It is difficult to use only suction air temperature control for underfoot air conditioning.
3.2 Thermostat Control
3.2.1 Without Optional Infrared Presence/Floor Sensor
The thermostat ON/OFF condition is determined by the difference between the remote
controller set temperature and the actual detected room temperature (

1).
 Normal operation

Cooling operation
 Dry operation
 When Tro < 24.5°C
 When Tro ≥ 24.5°C
ΔT = Detected room temperature – Remote controller set temperature
Tro: Detected room temperature at the start of dry operation
Tr: Determined by the room temperature detected by the thermistor

1: The thermistor used to detect room temperature is according to the field setting 10 (20)-2.
Remote controller set temperat u re
Control target temperat u re
˚C
Temperat u re
Cooling
Thermostat OFF
Normal operation
(Thermostat ON)
Δ
T ≤ –1.0°C
Δ T ≥ + 1.0°C
Thermostat OFF
Dry operation
Tr < Tro – 1.0°C
Tr
>
Tro + 1.0°C
Thermostat OFF
Tr
<
Tro – 1.5°C
Tr > Tro + 0.5°C
Dry operation