110-1052F 5/12/05 11:59 AM Page 3

TABLE OF CONTENTS

 

 

How do I change the time of day and day of the week?

.Page

4

How do I turn on the heating or cooling cycles?

.Page

5

How do I cycle the fan?

.Page

6

How does INTERMITTENT FAN work?

.Page

6

How do I temporarily change the temperature?

.Page

7

Can I set a temporary adjustment for longer than 3 hours?

.Page

8

Can I set the thermostat to hold one temperature indefinitely?

.Page

9

How do I return to the Program Mode after being in HOLD?

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9

How do I set the Vacation Mode?

.Page 10

How do I program my thermostat?

.Page 11

How do I copy one day’s program to another day?

.Page 13

What is an event?

.Page 14

How do I know what program is right for me?

.Page 14

How do I set the Humidify Levels?

.Page 15

How do I set the Dehumidify Levels?

.Page 15

What is the difference between Basic and Precision modes?

.Page 15

What happens if the mode is set to OFF?

.Page 16

What is the difference between Basic and Basic/DP?

.Page 16

What is the Dew Point Adjustment function?

.Page 16

Can I change the humidifier maintenance service interval?

.Page 16

What are the USER settings?

.Page 17

Detailed Information on the USER SETTINGS (Or what do these USER SETTINGS do?)

.Page 18

When would I need to change the USER settings?

.Page 20

What are the INSTALLER settings?

.Page 21

When would I need to change the INSTALLER settings?

.Page 24

How does Energy Efficient Recovery™ (EER™) work?

.Page 25

How does my remote outdoor sensor work?

.Page 25

Where should I install a remote outdoor sensor?

.Page 25

What do the lights below the display mean?

.Page 25

What should I do if my power goes out?

.Page 26

How do I reset the thermostat program to factory conditions?

.Page 26

How do I know if the heating or cooling is on?

.Page 26

Who do I contact for more information?

.Page 26

My energy bills are too high. Is there anything I can do?

.Page 27

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Lennox International Inc 81M28, 81M27, 81M26 user manual Table of Contents