Resistance is Constant During RANDOM or HILL Programs on LifeFitness 90C and 90CW Bikes

Probable Cause

  1. Loose wire connections.
  2. Worn or damaged harnesses.
  3. Malfunctioning Display Console.
  4. Malfunctioning Alternator Control Board.
  5. Malfunctioning Alternator.

Corrective Action

  1. Disconnect then, reset connections.
  2. Inspect wire harnesses. Replace any worn or damaged harness.
  3. Test with substitute Display Console. Replace malfunctioning Console.
  4. Test with substitute Alternator Control Board. Replace defective board.
  5. Test Alternator output or, test with substitute Alternator.
    1. Alternator Voltage Test:
      1. Attach DC voltmeter to Alternator.
        1. Voltmeter positive (+) probe to Alternator red lead.
        2. Voltmeter negative (-) lead to Alternator black lead.
      2. Maintain pedal speed greater than 45 RPM.
      3. Press START key.
        1. Alternator Voltage Specification: 9 - 11 VDC when pedal speed greater than 45 RPM.
      4. Replace malfunctioning Alternator.
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