Err
Mealthy General System Fault / Firmware Error

Generic 'Err' or 'Error' message appears and cooker will not start any program.

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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

Temporary firmware glitch, Corrupted program memory, Control board failure, Loose internal connectors

How to Fix / Troubleshooting

Safety first: Unplug the cooker.

  • Power reset: Leave the unit unplugged for at least 10–15 minutes to allow internal capacitors to discharge. Plug back in and check if the error clears.
  • Check for stuck buttons: Inspect the control panel for any buttons that appear stuck or depressed. Gently free them if necessary.
  • Inspect internal connectors: Remove the housing and reseat the main board connectors (power, sensors, control panel) to ensure good contact.
  • Factory reset (if available): Consult the Mealthy manual for a factory reset procedure and perform it.
  • Board replacement: If the error persists on every power-up, the main control board is likely defective and should be replaced.

Warning: Do not attempt to reflash firmware unless Mealthy provides an official procedure.

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Repair Difficulty

Hard 4/5

Required Part

Main Control Board
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