V6R VRF 50Hz
49
P
art
3
- Con
tr
ol
Figure 3-8.3: Case 1: Tsh=Tsc
b)
0<Tsc-Tsh<3°C
When the indoor ambient temperature(T1) is below Tsh, the indoor unit run in heating mode.
When the indoor ambient temperature(T1) is arrives Tsh+1°C, the indoor unit is heating thermostat OFF.
When the indoor ambient temperature(T1) is arrives Tsc+1.5°C, the indoor unit is cooling thermostat ON.
Case 2:
Tsc= 26°C, Tsh=24°C
If the indoor unit operates cooling mode and when indoor ambient drops to 24.5°C, the indoor unit will change to heating
mode; if the indoor unit operates heating mode and when indoor ambient rises to 27.5°C, the indoor unit will change to
cooling mode.
c)
Tsc-Tsh
≥
3°C
When the indoor ambient temperature(T1) is below Tsh, the indoor unit run in heating mode.
When the indoor ambient temperature(T1) is arrives Tsh+1°C, the indoor unit is heating thermostat OFF.
When the indoor ambient temperature(T1) is arrives Tsc, the indoor unit is cooling thermostat ON.
Case 3:
Tsc= 26°C, Tsh=22°C
If the indoor unit operates cooling mode and when indoor ambient drops to 22°C, the indoor unit will change to heating
mode; if the indoor unit operates heating mode and when indoor ambient rises to 26°C, the indoor unit will change to
cooling mode.
The default minimum time requirement for mode change is 15min. 30min, 60min and 90min can be set by wired controller
with bi-directional communication function.
Time
Cooling/Heating ON
Cooling satisfied
Cooling ON
1
℃
1
℃
Cooling ON
2
℃
2
℃
Heating satisfied
Mode change:
Heating to cooling
Mode change:
Heating to cooling
Mode change:
Cooling to heating
15min/30min/60min/90min
Cooling ON
Heating ON
26
℃
T1
