Honeywell T8400C Owner's Manual

Honeywell T8400C Manual

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  • Honeywell T8400C | Owner's Manual - Page 1
    Set Room FAN Auto On SYSTEM Cool Off Heat M18535 Em Ht Aux Ht Set Room Electronic Thermostat OWNER'S GUIDE FAN Auto On SYSTEM Cool Off Heat Em.Ht. M18539 1 69-1490 69-1490
  • Honeywell T8400C | Owner's Manual - Page 2
    years of Honeywell engineering expertise went into the making of this thermostat in an effort to provide you with a more comfortable and convenient living environment. • Simple and easy to use. The ▲ and ▼ keys make it easy for you to change your temperature setting. • Large digital display. You can
  • Honeywell T8400C | Owner's Manual - Page 3
    Settings Setting FAN and SYSTEM Switches Fan and system settings are controlled by using FAN and SYSTEM switches located on the bottom of the thermostat case. First set the FAN switch: Auto: Normal setting for most homes. In cooling, the fan goes off and on with the cooling equipment. In
  • Honeywell T8400C | Owner's Manual - Page 4
    shows a snowflake when cooling is on. Off: Both heating and cooling are off. Heat: Normal setting for months when your home needs heating. Digital display shows a flame when heating is on. Em. Ht.: (Not available on all models.) Switch to this setting when your home needs heat, but your
  • Honeywell T8400C | Owner's Manual - Page 5
    Em Ht and Aux Ht Indications Emergency Heat (Em Ht) and Auxiliary Heat (Aux Ht) indications are not available on all models. The ▲ indicator points to either Em Ht or Aux Ht when these modes are active. Em Ht: Aux Ht: The ▲ indicator points to Em Ht when the SYSTEM switch is set at Em Ht. The ▲
  • Honeywell T8400C | Owner's Manual - Page 6
    and the room temperature are shown separately on the digital display. The ▼ indicator points to Set when the temperature setting is displayed and to Room when the room temperature is displayed. 1. To display the temperature setting on the digital display, press either the ▲ or ▼ key once. Set Room
  • Honeywell T8400C | Owner's Manual - Page 7
    energy costs. Set Room M18442 2. To raise the temperature setting, press the ▲ key. When in the cooling mode, raising the temperature before you leave for work or school also lowers your energy costs. Set Room M18443 7 69-1490
  • Honeywell T8400C | Owner's Manual - Page 8
    . If you like saving energy, but would like your thermostat to automatically change the temperature setting, you might want to consider purchasing the Honeywell Chronotherm® Programmable Thermostat. With this thermostat, temperature settings can be conveniently programmed to automatically save
  • Honeywell T8400C | Owner's Manual - Page 9
    SAVE 7% TO 33% ON ENERGY COSTS PERCENT OF HEATING COSTS YOU CAN SAVE SAVINGS FOR ONCE-A-DAY 10°F (5°C) DECREASE* 6 TO 8% 9 TO 11% 12 TO 13% 14 TO 15% 16 TO 18% SAVINGS FOR TWICE-A-DAY 10°F (5°C) DECREASE* 12 TO 18 TO 23 TO 25 TO UP TO 16% 22% 25% 29% 30% HEAT PERCENT OF COOLING COSTS YOU CAN
  • Honeywell T8400C | Owner's Manual - Page 10
    instructions. Heating or cooling does not come on. Temperature setting is too warm or cool. • Check that the SYSTEM switch on the thermostat 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
  • Honeywell T8400C | Owner's Manual - Page 11
    If you have questions concerning this thermostat, call Honeywell Customer Assistance at 1-800-468-1502, Monday-Friday, 7:00 am-5:30 pm, Central time. For service, contact your local heating and cooling contractor: 11 69-1490
  • Honeywell T8400C | Owner's Manual - Page 12
    Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 Copyright © 2000 Honeywell All Rights Reserved ® U.S. Registered Trademark 69-1490 J.H. 9-00 6ww9w
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FAN
SYSTEM
Auto On
Cool Off Heat Em.Ht.
Em Ht
Aux Ht
Set
Room
OWNER’S GUIDE
Electronic
Thermostat
69-1490
FAN
SYSTEM
Auto On
Cool Off Heat
Set
Room