Common Terms and Where to Find Them
Auto changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 14
This feature automatically switches your system from heating to
cooling – or from cooling to heating – whenever necessary.
Auxiliary heat (heat pump systems only) . . . . . . . . . . . . . . . .page 10
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 17
Backlighting illuminates your display when you push a button.
Emergency heat (heat pump systems only) . . . . . . . . . . . . .page 10
You can manually set the thermostat to use emergency heat but it is
the most expensive option. If it's using emergency heat, the display
will show Em heat.
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