Honeywell T8635L Owner's Manual - Page 44

Troubleshooting (Cont) Symptom Outdoor temperature not displayed or is incorrect. Possible Cause Installer did not activate this option. Outdoor sensor is connected incorrectly. Action Contact installer or service technician. 1 COM, 2 COM, or 3 COM is displayed. The thermostat is unable to communicate with the equipment interface module located at the furnace. Turn the power off and then on to your furnace. If the problem persists, call your local heating and air conditioning dealer for assistance. is flashing and there is no air coming from the register. When using the thermostat in zoning applications, the thermostat must wait for all other zones to end their call for heat or cool before the fan request in this zone is honored. Wait until all other zone heat or cool cycles are complete. Heat or cool turns on before programmed time. Adaptive Intelligent Recovery™ control is on. Adaptive Intelligent Recovery™ control brings the heat or cool on early to meet the temperature set for the programmed period. See Adaptive Intelligent Recovery™ control section. To disable Adaptive Intelligent Recovery™ control, contact your local Heating and Air Conditioning contractor. 44 69-1332-4