Honeywell PRO4000 Series User Manual

PRO
4000 Series
Programmable
Digital
Thermostat
User Guide
Read and save these instructions.
Your new thermostat is pre-programmed. Just set the time and day. For help
please visit yourhome.honeywell.com
Press to set desired temperature.
NOTE: Set SYSTEM switch to the system you want
to control (Heat or Cool).
Fan Switch is used to
control your fan.
Auto: Fan runs only when
heating or cooling system
is on.
On: Fan runs continuously.
System switch is used to control your heating
or cooling system.
Cool: Cooling system control.
Off: All systems off.
Heat: Heating system control.
Em Heat: Emergency & Auxiliary Heat control.
Compressor is locked out. (Select models only.)
Set: Sets time/day/schedule.
Hold:
Overrides programmed temperature.
Run: Resumes program schedule.
Thermostat controls

Honeywell PRO4000 Series Specifications

General

Model	PRO4000 Series
Type	Programmable Thermostat
Temperature Range	40°F to 90°F (4°C to 32°C)
Hold Feature	Yes
Filter Change Alert	Yes
Power Source	Hardwired or Battery
Compatibility	Gas, Oil, Electric Systems
Changeover	Automatic or Manual
Backup Battery	Yes
Weight	0.5 lbs

Summary

Thermostat Controls Overview

Fan Switch Function

Controls fan operation: Auto runs with system, On runs continuously.

System Switch Function

Selects heating, cooling, or off mode for the HVAC system.

Display Screen Information

System Status Indicators

Indicates if cooling, heating, or emergency heat is currently active.

Setting Time and Day

Setting the Clock

Procedure to adjust the thermostat's current time setting.

Setting the Day

Procedure to select the correct day of the week.

Program Schedule Settings

Wake Schedule Setup

Sets wake-up time and desired temperature for the morning.

Leave Schedule Setup

Sets departure time and energy-saving temperature for when away.

Return Schedule Setup

Sets return time and comfort temperature for the evening.

Sleep Schedule Setup

Sets bedtime and energy-saving temperature for overnight.

Adjusting Program Schedules

Weekday Schedule Adjustment

Modify wake, leave, return, and sleep settings for Mon-Fri.

Weekend Schedule Adjustment

Configure wake, leave, return, and sleep settings for Sat-Sun.

Program Schedule Overrides

Temporary Temperature Adjustment

Adjusts temperature until the next scheduled period begins.

Permanent Temperature Hold

Holds a specific temperature 24/7, disabling the schedule.

Adaptive Intelligent Recovery (AIR)

AIR Function Explanation

How AIR optimizes heating/cooling start times for comfort.

Compressor Protection

Compressor Restart Delay

Protects compressor by enforcing a minimum wait time between cycles.

Battery Replacement

Replacing Thermostat Batteries

Steps for inserting new batteries and preserving memory.

Quick Reference and Support

Basic Operation Summary

Quick overview of thermostat functions and controls.

Customer Assistance Information

Contact details and resources for product support.

Troubleshooting Common Issues

Display Blank Troubleshooting

Steps to fix a thermostat with a blank screen.

System Not Responding Troubleshooting

Diagnosing and resolving issues with heating/cooling system failures.

Temperature Setting Issues

Addressing problems where temperature settings do not change.

Flashing 'Cool On'/'Heat On' Indicators

Understanding and resolving flashing status indicators.

'Heat On' Indicator Not Displayed

Troubleshooting why the 'Heat On' indicator is not visible.

'Cool On' Indicator Not Displayed

Troubleshooting why the 'Cool On' indicator is not visible.

5-Year Limited Warranty

Warranty Coverage and Terms

Explains what the 5-year limited warranty covers and its limitations.

Warranty Claims and Contact

Information on how to file a warranty claim and contact support.