Sinclair SDV 6 Service Manual page 45

6.3 Start and Stop Control
Indoor Unit judges the operation state according to the temperature compensation value (ΔTC) and the difference value
between detected indoor temperature (T1) and set temperature (TS).
When the indoor temperature reaches the set one, Indoor Unit shut down; when the indoor temperature exceeds the set
one, Indoor Unit start running.

Objective
1. Ensure comfort. When the indoor temperature of indoor return air reaches the temperature range set by the user, if
the IDU fails to shut down, the room temperature will deviate from the expected value of the user and reduce the
comfort of the room.
2. Energy saving. When the temperature of the return air reaches the temperature range set by the user, if the IDU fails
to shut down, the air conditioning system will continue to operate inefficiently under the condition of low indoor load,
with low energy efficiency and no energy saving.
3. The use of temperature compensation values is to solve the problem of differences in the distribution of the room
temperature field. The room due to structural differences, room heat source distribution differences, solar radiation,
hot air uplift, cold air sink and other factors will cause the temperature detected by the indoor unit's own return air
temperature sensor(T1) and the user's human activity area temperature deviation, temperature compensation
value(ΔTC) is used to repair this deviation
4. Ensure compressor reliability. The control will prevent frequent start/stop and the temperature compensation in the
temperature shutdown control will inhibit frequent opening and closing of the air conditioning system, extending the
service life of the air conditioning system;

Cooling (Dry)
Cooling(Dry)

Heating
Note:
The temperature compensation value (ΔTC) of cooling and heating operation can be found in the specifications of each
model. For details, please contact local technical support personnel
42
T − T
1
T − T
1
T
1
Heating
T − T
1
≥ （0 + ΔTC）℃
��
＜（ − 1 + ΔTC）℃
��
＜（0 + ΔTC）℃
− T
��
≥ （1 + ΔTC）℃
��
Enter standby mode when the
set temperature is reached
Enter standby mode when the
set temperature is reached