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Electronic thermostat with multiple program options

  • US 5,873,519 A
  • Filed: 08/19/1997
  • Issued: 02/23/1999
  • Est. Priority Date: 08/19/1997
  • Status: Expired due to Fees
First Claim
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1. A programmable electronic thermostat for controlling operation of a space conditioning system to maintain a desired ambient temperature in an indoor space, said thermostat comprising:

  • memory means for storing user-entered program instructions;

    user-operable first input means for entering a first set of program instructions into said memory means, whereby a user is able to select from a plurality of program options respecting particular days per week and particular periods per day for which a temperature setpoint is discretely programmable, said particular periods per day being constrained to be the same for each day of the week, said temperature setpoint corresponding to the desired ambient temperature during a corresponding period;

    user-operable second input means for entering a second set of program instructions into said memory means, said second set of program instructions indicating the temperature setpoint for each particular period per day selected by the user; and

    processing means for processing said first and second sets of program instructions and information indicating ambient temperature in the indoor space in accordance with a predetermined set of control instructions, to control operation of the space conditioning system.

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