ER12
Sage Low Voltage / Power Supply Fault

Machine displays ER12 and will not power up fully or shows erratic behavior

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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 internal power supply module, Loose mains connector, Blown internal fuse, Shorted component on PCB drawing excess current

How to Fix / Troubleshooting

Safety: Unplug the machine before any inspection. Mains voltage is dangerous; only qualified persons should work on live circuits.

  • External checks:
    • Test the wall outlet with another appliance to confirm proper voltage.
    • Avoid using long extension leads or multi-way adapters that may drop voltage.
  • Power reset: Leave the machine unplugged for 10–15 minutes, then reconnect directly to a wall outlet.
  • Internal fuse (advanced):
    • Remove the housing and locate the internal mains fuse on or near the power entry or PCB.
    • If blown, investigate for short circuits before replacing with the exact same rating and type.
  • Repair: Replace the power supply board or main control board if the low-voltage rails are not present or stable. This is typically a professional repair.
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Repair Difficulty

Professional Required 5/5

Required Part

Power Supply Board
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