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Honeywell Electronic Thermostat Owner's Manual
Honeywell Electronic Thermostat Owner's Manual

Honeywell Electronic Thermostat Owner's Manual

Electronic thermostat

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Electronic
Thermostat
Set
Room
OWNER'S GUIDE
FAN
SYSTEM
Auto On
Cool Off Heat
M18535
Em Ht
Aux Ht
Room
Set
FAN
SYSTEM
Cool Off Heat Em.Ht.
Auto On
M18539
1
69-1490
69-1490

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Summary of Contents for Honeywell Electronic Thermostat

  • Page 1 Electronic Thermostat Room OWNER’S GUIDE SYSTEM Auto On Cool Off Heat M18535 Em Ht Aux Ht Room SYSTEM Cool Off Heat Em.Ht. Auto On M18539 69-1490 69-1490...
  • Page 2 Congratulations on the purchase of your new thermostat! Over 100 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 keys make it easy for you to change your temperature setting.
  • Page 3: Setting Fan And System Switches

    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.
  • Page 4 Then set the SYSTEM switch: Cool: Normal setting for months when your home needs cooling (air conditioning). Digital display shows a snowflake when cooling is on. Off: Both heating and cooling are off. Heat: Normal setting for months when your home needs heating.
  • 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: indicator points to Em Ht when the SYSTEM switch is set at Em Ht.
  • Page 6 Displaying Temperature Setting NOTE: Your temperature setting can be set anywhere from 40° to 99°F (5° to 37°C). The temperature setting 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.
  • Page 7: Changing Temperature Setting

    Changing Temperature Setting 1. To lower the temperature setting, press the key. When in the heating mode, lowering the temperature at night or during the day can lower your energy costs. Room M18442 2. To raise the temperature setting, press the key.
  • Page 8: Energy Savings

    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 energy.
  • Page 9 SAVE 7% TO 33% ON ENERGY COSTS PERCENT OF HEATING COSTS YOU CAN SAVE SAVINGS FOR ONCE-A-DAY SAVINGS FOR TWICE-A-DAY 10°F (5°C) DECREASE* 10°F (5°C) DECREASE* HEAT 6 TO 12 TO 16% 9 TO 11% 18 TO 22% 12 TO 13% 23 TO 25% 14 TO 15% 25 TO 29%...
  • Page 10: Troubleshooting Guide

    Troubleshooting Guide CAUTION To avoid possible equipment damage, do not operate cooling when outside temperature is below 50°F (10°C). See equipment manufacturer instructions. Heating or cooling • Check that the SYSTEM switch does not come on. on the thermostat is set to Heat or Cool.
  • 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: 69-1490...
  • Page 12 Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 Copyright © 2000 Honeywell All Rights Reserved Printed in U.S.A. on recycled ® U.S. Registered Trademark paper containing at least 10% 69-1490 J.H. 9-00 post-consumer paper fibers.