Owner's Manual
Page 10
... possible equipment damage, do not operate cooling when outside temperature is set to Heat or Cool. • Check the system fuse or circuit breaker and replace or reset if necessary. • Check for air movement at the register. • Check power to the heating or cooling equipment. • Adjust the temperature.... 69-1490 10 Temperature setting is too warm or cool. • Check that the SYSTEM switch on . Heating or cooling does not come on the thermostat is below 50°F (10°C).
... possible equipment damage, do not operate cooling when outside temperature is set to Heat or Cool. • Check the system fuse or circuit breaker and replace or reset if necessary. • Check for air movement at the register. • Check power to the heating or cooling equipment. • Adjust the temperature.... 69-1490 10 Temperature setting is too warm or cool. • Check that the SYSTEM switch on . Heating or cooling does not come on the thermostat is below 50°F (10°C).
Installation Instructions
Page 1
...in the trash. drafts or dead spots behind the thermostat. unheated (uncooled) areas such as provided in a sealed tube. Contact your old control in corners. - Registered Trademark Copyright © 2002 Honeywell • • All Rights Reserved 69- 1480-... pipes and chimneys. - Do not install the thermostat where it carefully. ® U.S. This thermostat is a precision instrument and was carefully adjusted at 3 cph. The T8400C Thermostat is selectable at 1, 3, 4, 5, 6, or 9 cph. After installation is replacing a control that contains mercury in a sealed tube...
...in the trash. drafts or dead spots behind the thermostat. unheated (uncooled) areas such as provided in a sealed tube. Contact your old control in corners. - Registered Trademark Copyright © 2002 Honeywell • • All Rights Reserved 69- 1480-... pipes and chimneys. - Do not install the thermostat where it carefully. ® U.S. This thermostat is a precision instrument and was carefully adjusted at 3 cph. The T8400C Thermostat is selectable at 1, 3, 4, 5, 6, or 9 cph. After installation is replacing a control that contains mercury in a sealed tube...