Honeywell DB7110U1000 Universal Single-Stage Heat Pump Defrost Control

Universal Defrost Control for Single Stage On/Off Heat Pumps. It provides control of the outdoor equipment; compressor contractor, reversing valve, and outdoor fan in response to thermostat requests and air and coil temperatures. It also controls the indoor auxiliary heat source that is used during defrost operations and often as a second stage of heat. A defrost cycle is triggered based on outdoor air and outdoor coil temperatures that are measured using included temperature sensors. Fits any heat pump without need to relocate internal components Dual LED's provide simple configuration and diagnostic capabilities Replaces over 260 single stage heat pump defrost controls