U.S. Motors variable-speed pool pump display is blank or unreadable, but the pump may still run at a default speed.

Safety first: Turn off power before removing the display or keypad.

• Check backlight: In a dark environment, see if any faint backlight is visible. A lit but blank screen suggests logic/display failure.
• Inspect connections: Remove the display/keypad and reseat the ribbon cable or connector to the main board.
• Look for moisture: Check for condensation or water inside the display housing. Dry thoroughly and improve sealing if needed.
• Test pump operation: If the pump still runs on schedule, the main control is likely OK and only the display is faulty.
• Replace display/keypad: Install a new U.S. Motors user interface/display module to restore visibility and control.