Honeywell CT2800 Owner's Manual - Page 20

d. Install new batteries. Make sure that positive and negative terminals are oriented as marked inside battery case. e. Close the battery door and set the System switch to HEAT or COOL. NOTE: If "bAt Lo" continues to display after replacing the batteries, set System switch to OFF, insert batteries backward, wait for five to ten seconds, and return batteries to correct orientation. Then reprogram. IMPORTANT: Replace batteries once a year to prevent heating/cooling system from shutting down due to lack of battery power in thermostat. If leaving home for longer than a month, change batteries before leaving. Override program settings NOTE: Make sure the System switch is set to either HEAT or COOL before making any changes to the schedule. Change the temperature temporarily Fig. 27. Press or until the desired temperature is displayed. An arrow is displayed, indicating that the change is temporary (Fig. 27). NOTE: A temporary change to temperature lasts for current program period only. Heating/cooling schedule you programmed resumes when next scheduled program period is reached.To cancel temporary change before next scheduled program period, press Run Program . 69-1638-1 20