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49
COMMON TERMS AND WHERE TO FIND THEM
Auto changeover
page 46
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This feature automatically switches your system from heating to cooling – and from
cooling to heating – whenever necessary when the thermostat is set in auto mode.
Auxiliary heat (heat pump systems only)
page 33
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Most heat pump systems can’t heat a home sufficiently when it gets very cold
outside so they use a supplemental heating source called auxiliary heat. The system
knows when to use this help and does so automatically. If it’s using auxiliary heat,
the display will show
aux heat on
. You have no control over the auxiliary heat
function.
Backlighting
page 39
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backlighting illuminates your display. When the thermostat is powered by
electricity, the backlight is on constantly at a dim level that brightens when you
push a button. With battery powered thermostats, the backlight is off until you press
a button.