E6 displayed and the unit will not accept new settings or buttons do not respond

Safety: Disconnect power before removing the control panel.

• Check for lock mode: Some Tapworks models have a child lock or keypad lock. Refer to the user manual to disable any lock function before assuming a fault.
• Inspect for moisture: Remove the control cover and look for condensation or salt residue on the keypad and PCB. Dry gently with a hairdryer on a cool setting and clean with a soft cloth.
• Check ribbon cable: Ensure the flat ribbon cable from the keypad to the control board is fully inserted and not damaged. Reseat the connector.
• Test individual buttons: With power restored, press each button firmly. If some work and others do not, the keypad membrane is likely failing.
• Replace keypad / front panel: If E6 persists or buttons remain unresponsive, replace the Tapworks front control panel or keypad membrane assembly as supplied by the manufacturer.