Fault-tolerant HVAC system

Details Fault-tolerant HVAC system Fault-tolerant HVAC system

1996-03-28

1998-01-06

Ruggiero, Joseph

Boots, shoes, and leggings

165205, 364505, 364557, 364184, G06F 1900

Patent

active

057061904

ABSTRACT:
A fault-tolerant HVAC system for use in a single or multi-zoned system, capable of continued operation in the event of a thermostat, or other sensing device malfunction. An HVAC controller controls the operation of an HVAC unit in accordance with a temperature signal output from the thermostat and indicative of air temperature of a conditioned space proximate the thermostat. The HVAC controller detects a thermostat malfunction and, in response thereto, instead controls the operation of the HVAC unit in accordance with a temperature sensor outputting a signal indicative of return air temperature from the conditioned space.

REFERENCES:
patent: 4448033 (1984-05-01), Briccetti
patent: 4843084 (1989-06-01), Parker et al.
patent: 4931948 (1990-06-01), Parker et al.
patent: 4942613 (1990-07-01), Lynch
patent: 5481481 (1996-01-01), Frey et al.

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