Groups Not Supporting The Auto (Dual Set Point) Mode; Groups Supporting The Auto (Dual Set Point) Mode - Mitsubishi Electric AT-50B Instruction Book

The System-Changeover function operates depending on whether the group supports the Auto (dual set
point) mode or not.

1) Groups not supporting the Auto (dual set point) mode

Set temperature
24ºC

2) Groups supporting the Auto (dual set point) mode

Set temperature
for cooling
28ºC
Set temperature
for heating
20ºC
• Do not set the heating temperature above the cooling temperature.
• In the case of groups that support the Auto (dual set point) mode, a huge difference between
the heating and cooling temperatures may delay the changeover of the operation mode. It is
recommended to set heating and cooling temperatures to the same value.
Cooling operation
Mode change (Cool→Heat)
Summer
Cooling operation
Thermo OFF
Mode change (Cool→Heat)
Summer
Mode change (Heat→Cool)
Heating operation
Winter
Mode change (Heat→Cool)
Thermo OFF
Heating operation
Winter
1.5ºC
1.5ºC
Summer
1.5ºC
1.5ºC
Summer
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