Carrier 33CS450-01 Owner's Manual page 61

Using ! Heat
ENTER EMERGENCYHEAT: Only available if you have a Heat Pump
installed. To initiate the Emergency Heat feature, press the FAN
button. While holding the FAN button press the UP button. The
Cool setpoint display will read 'EH' (emergency heat).
4"
Press for
Emergency
Heat
OPERATION: During Emergency Heat operation the
thermostat will turn on the fan and the 2nd stage of heat
when there is a demand for heat. Also during Emergency
Heat the 1st stage of heating or cooling will be unavailable.
EXITEMERGENCYHEAT: Follow the same steps as entering
Emergency Heat by pressing the FAN and UP buttons. During
Emergency Heat, only OFF and HEAT modes are available by
pressing the MODE button.
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