Night Setback Control - Mitsubishi Electric AG-150A Instruction Book

7-2 Night setback control

To use Night setback control (abbreviated to setback control below), click [Functions 3] on the menu, and then
click [Setback Control]. Air conditioning group can be set for this control.
This control prevents indoor dew by heating automatically when the room temperature goes outside of the
specific range during the night.
Note: If PAC-YG50ECA Expansion Controllers are connected, Expansion Controller system selection buttons will appear. Select
the desired Expansion Controller (EC1, EC2, or EC3), and make the settings for each system. Make the settings with the
Expansion Controllers properly connected.
Note: This control starts heating operation when the control object group stops and the temperature drops below the Min.
temperature. Also this control starts cooling operation when the control object group stops and the temperature rises above
the Max. temperature.
Note: If the room temperature is measured by the air-conditioner's suction temperature sensor, the temperature may not be
correct when the air-conditioner is inactive and the air is not fresh. When the temperature is not measured correctly, switch
the sensor to external temperature sensor (PAC-SE40TSA / PAC-SE41TSA) or remote control sensor.
Note: When connecting AG-150A controllers by connecting an Expansion Controller to the system, set back settings should be
made only on one of the AG-150A controllers.
Setback usability
Select setback usability.
Setback control period
Set the setback control period.
Group number, group
name
Displays group number and
group name.
Refresh
Read setting data from AG-150A.
(1)Select [Use] and set the setback control period.
Note: When [00:00 - 00:00] is set, setback control is active for 24 hours.
(2)Set the control temperature range (Max. and Min.) for each group. For example, suppose [01:00 -
05:00][12°C - --°C] is selected. In this case, heating operation starts automatically when the room
temperature drops below 12°C between 1:00 to 5:00. When the control period is over at 5:00, the set
temperature returns to the original and the operation stops.
Note: During setback operation after the temperature drops below the Min. temperature, when the control period is over or the
room temperature rises to <Min. temperature + 3°C>, the setback control and air conditioning unit stop and the set
temperature returns to the original. In the same way, during setback operation after the temperature rises above the Max.
temperature, when the control period is over or the room temperature drops to < Max. temperature - 3°C>, the setback
control and air conditioning unit stop and the set temperature returns to the original.
Note: When copying settings of a group to another group, click [Copy] button. The screen will change to a selection screen
(yellow-green). Click [Paste] on a group to be copied.
Note: The CITY MULTI model supports a temperature setting range of 12-28°C / 53-83°F when in Heat mode. (When S series
(PUMY) is used, set the temperature at 17°C-28°C / 63-83°F in heat mode.)
(3) Click [Save Settings] to send setting data to AG-150A.
When setback control is active, air conditioning group operates as shown below.
Room.
temperature
21°C
Min. temperature
12°C
Heat ON Heat OFF
21°C
When the temperature drops below the Min.
temperature (heating control)
Setback operation stops
(when the temperature
Setback
rise 3°C or the control
operation
period is over)
starts
Heat OFF
Heat ON
12°C 21°C
Setback control period
Max. temperature
28°C
Room
temperature
24°C
Cool On Cool OFF
24°C
When the temperature rises above the Max.
temperature (cooling control)
39
Control temperature range
Max./Min. temperature for
setback control can be set.
Expansion Controller
system selection buttons
Click to select the system to be
set.
Save settings
Send setting data to AG-150A.
3°C
Setback
operation
starts
Cool OFF
Cool ON
28°C 24°C
Setback control period