How To Set Honeywell Thermostat Temperature To Heat. The system should start blowing hot air. Set the temperature between 60 and 80 degrees fahrenheit to keep the house at a consistent temperature and avoid using auxiliary heat.
To cancel the temporary setting at any time, press run. How do i adjust a thermostat so that the heat reaches the set temperature? I have a new programmable honeywell t4, th4110u2005 thermostat that was programmed by an installer so that the set temperature will always stay at the set temperature all year round.i have the set room temperature set at 72 degrees in permanent mode.if the cool on or the snowflake icon is flashing, the thermostat is in delay mode, which can take up to 5 minutes.