Patent ID: 9719715
Date: 2017-08-01
CPC Classifications: F25B,F25D

Claim:
1. A controller for a heat pump system, the heat pump system configured to operate at least two defrost cycles, the controller configured to: receive weather data for a defined geographic area proximate to an installed location of the heat pump system, the weather data comprising a humidity level; determine whether the heat pump system is operating in a freezing precipitation condition based at least in part upon the humidity level; determine whether to operate a de-icing cycle based at least in part upon the weather data, wherein the de-icing cycle comprises operating a heating strip on an orifice ring comprising an outdoor fan system of the heat pump system; select, based at least in part upon determining whether the heat pump system is operating in the freezing precipitation condition, one of the at least two defrost cycles; and operate the de-icing cycle prior to operating the one of the at least two defrost cycles, based at least in part upon determining whether to operate the de-icing cycle based at least in part upon the weather data.