Emerson 1HDEZ-1521 PART NO. 37-7343B

www.white-rodgers.com

www.emersonclimate.com

White-Rodgers is a business

of Emerson Electric Co.

The Emerson logo is a

trademark and service mark

of Emerson Electric Co.

PART NO. 37-7343B

Replaces 37-7343A

1312

Contents

Main WARNING ! CAUTION ! Applications and Speci cations Page Equipment Control Page Page INSTALLATION Fig. 1 - Typical Connection of a Single Stage or Multi-Stage System *Factory installed jumper between RH and RC * Fig. 2 - Typical Connection of Heat Pump System up to 4 Stages Heat/2 Stages Cool Page Wiring Guide for Equipment Accessories Thermostat Tabs 12 INSTALLATION Thermostat Equipment Control Power System Page Communicating Devices Page Page USB Upload Faults Status Thermostat Summary Heat Pump Lockout (outdoor sensor required) Dual Fuel Setpoint (outdoor sensor required) Page Installation Test Check System Operation Navigating through your thermostat menus Clock and Display Settings Heating Program Cooling Program Thermostat Settings Page Page Page Page Reset Operation Page Equipment Control Fault Codes Page PART NO. 37-7343B