-88

Display Cable Red Wire Fault

Appliance: Sub-Zero 700 Series Models: 700TR, 700TC/I, 700TF/I, 700BR, 700BF/I

⚠ What This Means

The display shows -88, the top lights are off, and all keys are inoperative. This indicates the red wire of the display cable is unhooked or faulty.

🔧 How to Fix

  1. Disconnect power at the master power switch.
  2. Locate the display cable connecting the control panel to the control board.
  3. Check the red wire for loose connections, breaks, or corrosion.
  4. Repair or reseat the red wire connection.
  5. Restore power and verify the display and keys function normally.

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