About Advanced Features & Operation
2 STAGE OPERATION - The 2nd Stage of heat or cool is turned on when (1) the 1st Stage has been on for a minimum of two minutes, and (2) the temperature spread from the setpoint is equal to or greater than: the setpoint plus the deadband, plus 2 degrees.
Heating | Cooling |
2 degrees
Dead Band
Dead
Band
2 degrees
2nd Stage | 1st Stage | Heat | Cool | 1st Stage | 2nd Stage |
turn on | turn on | Setpoint | Setpoint | turn on | turn on |
MINIMUM HEAT/COOL SETPOINT DIFFERENCE - The Heat and Cool setpoints will not be allowed to come any closer to each other than the value set in Advanced Setup step
#8, on page 7. This minimum difference is enforced during Auto changeover and Program On operation.
EMERGENCY HEAT - Is a feature available to Heat Pump installations. To turn on Emergency Heat press in the Fan button. While holding the Fan button press
the Up button for 2 seconds. The Cool setpoint display will read ‘EH’.
Press for | 72 | EH |
Emergency Heat | 72HEAT |
Fan
During Emergency Heat the thermostat will turn
on the fan and the 2nd stage of heat, when there is a demand for heat, locking out the 1st stage compressor. Exiting Emergency Heat is the same as entering. During Emergency Heat only OFF and HEAT are available.
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