Mitsubishi Electric BAC-HD150 Instruction Book page 44

Appendix Outline of Auto (dual set points) and Setback modes
Auto (dual set points) and Setback modes:
When the operation mode is set to the Auto (dual set points) mode or the Setback mode, two set temperatures (one each for
cooling and heating) can be set. Depending on the room temperature, indoor unit will automatically operate in either the
cooling or heating mode and keep the room temperature within the preset range.
■ Differences between the two modes
• Auto (dual set points) mode
The set temperatures that are specified for the Cool/Drying mode and the Heat mode will be used to automatically control
the room temperature to stay within the set temperatures. This mode is especially effective during the in-between
seasons, when the temperature difference between the highest and the lowest is large and both heating and cooling
modes are used within the same day.
Set Temp Cool
Set Temp Heat
• Setback mode
Room temperature is controlled to stay within the set temperature range that is specified for the Setback mode. By
leaving sufficient temperature differential between the set temperature for cooling (upper limit) and heating (lower limit), it
is possible to keep the room temperature within the specified range without overworking the air conditioners. This setting
will be especially effective during periods of non-occupancy.
Set High Limit
Setback Temp
Set Low Limit
Setback Temp
Operation pattern during Auto (dual set points) mode
Heat Cool
Operation pattern during Setback mode
Heat Cool
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The room temperature
changes
corresponding to the
change in the outside
temperature.
Heat
The room temperature
changes
corresponding to the
change in the outside
temperature.
Heat
Room
temperature
Cool
Room
temperature
Cool