Honeywell RTH2300B1038/E1 User Manual

Owner’s Manual
Read and save these
instructions.
For help please visit
honeywellhome.com
RTH2300/RTH221
Series
Programmable
Thermostat
M37777
Heat Off Cool Auto On
Fan
Heat Off Cool
Auto On
Fan
Set
Hold
Run
Identify System Type
This thermostat is compatible with the following systems:
• Gas, oil or electric furnace
• Central air conditioner
• Hot water system with or without pump
• Millivolt system
• Central heating and cooling system
• Heat pump without auxiliary/backup heat
Do you need assistance? We are here to help.
Visit http://honeywellhome.com/support for wiring assistance before returning the
thermostat to the store.
This thermostat cannot be used on heat pumps with backup heat or on
multistage systems.

Honeywell RTH2300B1038/E1 Specifications

General

Type	Programmable Thermostat
Display	Digital
Stages	1 Heat / 1 Cool
Backlight	Yes
Programmable	Yes
Hold Feature	Yes
Filter Change Alert	Yes
Temperature Range	40°F to 90°F
Power Source	Battery
Compatibility	Heating and Cooling
Schedule	7-Day Programming
Voltage	24 VAC
Battery	2 AA Batteries
Weight	0.5 lbs

Summary

Identify System Type

Mercury Recycling Notice

Customer Assistance and Support

Turn Off Power to Heating/Cooling System

Remove Old Thermostat

Label Wires with Tags

Separate Wallplate from New Thermostat

Mount Wallplate

Connect Wires to Wallplate

Alternate Wiring Configurations

Install Batteries

Set Fan Operation Switch

Install Thermostat Onto Wallplate

Turn Power Back On

Configure System Type

Advanced Installation and Setup

Enter System Setup Mode

Press and hold ▲ and ▼ buttons to enter system setup.

Navigate and Change Settings

Use ▲/▼ to change settings; ▲+▼ simultaneously to advance.

About Your New Thermostat

Thermostat Controls and Display

Understanding the Display Screen

Explains setpoint indicator, time, day, program period, system status, and temperature readings.

Set Time and Day

Program Schedule

Adjust Program Schedules (RTH2300)

Step-by-step guide to adjust weekday and weekend schedules for the RTH2300 model.

Adjust Program Schedules (RTH221)

Step-by-step guide to adjust schedules for the RTH221 model.

Temporary Program Schedule Override

Permanent Program Schedule Override

Built-in Compressor Protection

Change Filter Reminder (RTH2300 Only)

Battery Replacement Procedure

Electrical Ratings

Troubleshooting Common Issues

1-Year Limited Warranty