Contents
1 About Your Thermostat
Quick Reference - Thermostat and Display ............... 4
2 User Settings
Accessing User Settings ........................................... 8
Table of User Settings ...............................................9
Resetting Service Reminders ....................................9
Setting the Time and Day ........................................10
Humidity Setpoints (4235 only) ................................10
Backlight Control .....................................................11
Service Reminders ..................................................12
Temperature & Lock Code .......................................13
Resetting Thermostat ..............................................14
3 Setting Your Program Schedule
Tips Before Setting Your Program Schedule .............15
Programming a 7 Day Schedule ..............................17
Programming a 5-2 Day Schedule ...........................19
4 Operating Your Thermostat
Setting the System Control Mode ........................... 20
Setting the Fan Control Mode ..................................21
Temperature Adjustment ........................................ 22
Program Event Indicators ....................................... 23
System Status and Maintenance Indicators ............ 24
5 Additional Operation Features
Auto Changeover Mode ....................................... 28
Adaptive Recovery Mode ..................................... 28
Circulating Fan Mode ...........................................29
Programmable Fan Mode .....................................29
Compressor Protection .........................................29
Locking and Unlocking the Thermostat ................ 30
Indoor Remote Sensing ........................................ 31
Outdoor Remote Sensing ..................................... 31
Humidification / Dehumidification (4235 only).......32
Pre-Occupancy Purge ..........................................33
Condensate Overflow ...........................................34
Occupancy Control ...............................................34
Door Sensor .........................................................34
6 Thermostat Maintenance
Battery Replacement ........................................... 35
Thermostat Cleaning ........................................... 35
User Manual 2