E15
MasterPro Real-Time Clock / Timer Circuit Fault

E15 error appears when trying to start a delayed timer or preset 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

Failed RTC chip on control board, Corrupted timer firmware, Low backup capacitor or battery (if equipped), Control panel communication error

How to Fix / Troubleshooting

Safety first: Unplug the cooker before opening the control panel.

Basic reset:

  • Unplug the unit for 10 minutes, then reconnect and set the clock/time again if the model supports it.
  • Try running an immediate (non-delayed) program to confirm that only timer functions are affected.

Internal inspection:

  • Access the main control board and inspect the area around the RTC (if identifiable) for corrosion or damage.
  • Reseat any connectors between the display/time module and the main PCB.

Resolution: If E15 persists and only delayed functions fail, the RTC or associated circuitry on the main board is likely defective. Board replacement is typically required and should be done by a service technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Main Control Board
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