E07
Scalemaster Keypad / User Interface Fault

Display shows E07 and the unit will not accept new settings or buttons are unresponsive

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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

Damaged membrane keypad on Scalemaster front panel, Moisture ingress behind display, Loose ribbon cable between keypad and PCB, Faulty user interface board

How to Fix / Troubleshooting

Safety first: Disconnect power before removing the front cover or keypad assembly.

Step-by-step checks:

  • 1. Inspect for moisture: Check around the display and keypad for signs of condensation or water drips from above. Resolve any leaks before proceeding.
  • 2. Power cycle: Turn off power for a few minutes, then restore. Sometimes a temporary software lock can be cleared by a reset.
  • 3. Check keypad ribbon cable: Remove the front cover and locate the flat ribbon cable from the keypad to the PCB. Ensure it is fully inserted and not damaged or creased sharply.
  • 4. Test individual buttons: With power on, press each button firmly. If none respond, suspect the keypad or UI board. If only some fail, the membrane may be worn.

Keypad and UI board replacement involves handling delicate electronics and seals. If E07 persists, arrange for a Scalemaster service engineer to replace the front panel assembly.

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Repair Difficulty

Medium 3/5

Required Part

Keypad / User Interface Panel
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