Venstar T4950-IAQ, Руководство пользователя и инструкции по установке

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Emergency Heat
The Emergency Heat function is only available
if your thermostat is set to control a Heat Pump.
To initiate the Emergency Heat feature, Press the EMERGENCY HEAT button.
During Emergency Heat operation the thermostat will turn on the fan and
auxiliary stages of heat when there is a demand for heat. The compressor will
not be turned on for either heating or cooling. To exit Emergency Heat, press the
EMERGENCY HEAT button.
Emergency Heat
EMERGENCY HEAT