07731098 is referenced by 8 patents and cites 9 patents.

A thermostat is provided that receives one or more inputs from at least one heating system of a climate control system, and initiates an appropriate action in response to the input. The thermostat can turn off a heat pump providing substandard heat and responsively turn on a fuel-fired auxiliary furnace. The thermostat may discontinue further operation of the auxiliary furnace upon receiving an operating error signal associated with the auxiliary furnace, and responsively turn on the heat pump to provide for continued heating. The thermostat may also discontinue operation of the fuel-fired furnace and turn on a circulating fan in response to an input signal indicating a furnace high-temperature or a carbon monoxide presence.

Title
Thermostat responsive to inputs from external devices
Application Number
11/843380
Publication Number
7731098 (B2)
Application Date
August 22, 2007
Publication Date
June 8, 2010
Inventor
John R Sartain
St. Louis
MO, US
Steven L Carey
St. Louis
MO, US
William P Butler
St. Louis
MO, US
Agent
Harness Dickey & Pierce
Assignee
Emerson Electric Co
MO, US
IPC
G01M 1/38
F25B 29/00
G01K 13/00
F24F 7/00
View Original Source