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Automotive air-conditioning servicing system and method

  • US 4,755,957 A
  • Filed: 03/27/1986
  • Issued: 07/05/1988
  • Est. Priority Date: 03/27/1986
  • Status: Expired due to Term
First Claim
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1. A method for servicing air-conditioning systems, comprising:

  • measuring the high and low side pressures of an air-conditioning system;

    converting said measured pressures to electrical signals corresponding to said measured pressures;

    analyzing said electrical signals by comparing said electrical signals to electrical signals provided by a data-storage means corresponding to standard pressure values for proper functioning of said system;

    providing an output indicating whether said air-conditioning system is functioning properly;

    providing an output if said system is not functioning properly indicating one or more possible causes of malfunction of the system; and

    providing an output indicating the procedure to be followed by the operator to effect repair of said system if said system is not functioning properly.

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