Midea V8 VRF Series Service Manual page 27

V8 VRF Indoor Units
2.3 Function Descriptions
2.3.1 Power failure memory function
The power failure memory function can be used to ensure that, in the event of a power outage, the indoor units, which
was in operation before, automatically restart once the power returns. When the power returns following a power outage,
units with Power failure memory function enabled restart with the same operating mode, fan speed and remote control
lock status settings as before the power outage. If, during this timed delay, the remote or wired controller is used to send a
command to a unit, that unit starts-up immediately with those new settings. Indoor units with this function disabled go
into standby once the power returns following a power outage.
2.3.2 Heating mode temperature compensation setting
Since indoor units are often installed at ceiling level, and since warm air rises, the ambient temperature sensed at the unit
can be higher than the ambient temperature where users are standing or sitting. To compensate for this, in heating mode
the indoor units target a temperature that is higher than the set temperature. The heating mode temperature
compensation setting sets the difference between the set temperature and the target temperature. For example, if the set
temperature is 20°C and the heating mode compensation setting is 4°C, the units target an ambient temperature (sensed
at the unit) of 24°C
Depending on a variety of factors including the height of the room and the position of the units, different values may be
appropriate for the heating mode temperature compensation setting. Values of 0°C, 2°C, 4°C, 6°C or 8°C can be selected
Controller.
2.3.3 Cooling mode temperature compensation setting
With cooling mode temperature compensation, in cooling mode the indoor units target a temperature that is lower than
the set temperature. The cooling mode temperature compensation setting sets the difference between the set
temperature and the target temperature. For example, if the set temperature is 26°C and the cooling mode compensation
setting is 2°C, the units target an ambient temperature (sensed at the unit) of 24°C. Values of 0°C or 2°Cfor cooling mode
temperature compensation can be selected by controller.
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