Carrier Non-Programmable Thermostats Manuel du propriétaire télécharger pdf (Page 22)

WHAT IF . . .

The battery icon is displayed

The battery icon appears on the display only when the battery starts to lose

power. Replace it when one−third of the icon is black. If your thermostat is

battery powered and you wait until the icon is just a silhouette with no black

bars, you will slowly lose thermostat functions until it doesn’t work at all.

“Aux heat on” is displayed (heat pump systems only)

Aux heat on is auxiliary heat. It applies only to the heat pump version. If it is on,

you will see aux heat on. When it is displayed, it means the system has deter-

mined that it’s too cold outside for your heat pump to heat the house without

help, so it’s getting help from the electric heaters. This happens automatically.

“Em heat” is displayed (heat pump systems only)

Em heat is the display term for emergency heat and applies only to the heat

pump version. You have to turn on emergency heat manually – it doesn’t happen

automatically – so if you see Em heat on the display, it means somebody has

turned it on.

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Carrier Non-Programmable Thermostats Manuel du propriétaire Page 22