Harris
Display / User Interface Power Loss
Pump display is blank but motor hums or runs
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed display board, Loose display power connector, Blown low-voltage fuse on control PCB
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before opening the control housing.
- Inspect display connections: Remove the control cover and verify the display/keypad harness is firmly connected to the main PCB.
- Check for low-voltage fuse: Some Harris models include a small fuse protecting the display circuit. Inspect and replace with the same rating if blown.
- Look for damage: Examine the display board for burn marks or corrosion.
If the display remains blank with proper connections and fuses, replace the keypad/display assembly or entire control module.
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Repair Difficulty
Medium
3/5
Required Part
Harris pump keypad/display assembly
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