E10
Gram Power Supply / Relay Board Fault

Oven shows E10 and none of the heating functions operate, though the display works.

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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

Blown internal fuse on main PCB, Burned power relay contacts, Loose mains terminal block, Damaged power track on PCB

How to Fix / Troubleshooting

Safety first: Disconnect the oven from mains. Internal components carry lethal voltages.

Steps to check:

  • Remove the top or rear cover to access the mains terminal block and main control board.
  • Inspect the terminal block for signs of overheating or loose screws. Tighten connections and replace the block if melted.
  • Check for an internal glass fuse on or near the PCB. Test with a multimeter and replace only with the same rating if blown.
  • Examine the PCB for burned tracks or components near the power relays. Any visible damage usually requires PCB replacement.
  • After repairs, reassemble and test. If E10 persists, replace the main control board.

Warning: PCB-level repairs should only be done by qualified personnel. Incorrect work can cause fire or electric shock.

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Repair Difficulty

Professional Required 5/5

Required Part

Main Control Board (PCB)
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