E20
Tower Evaporator Defrost / Release Fault

E20 error code, unit may freeze water but not release cubes properly.

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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

Insufficient hot gas bypass (on certain Tower models), poor evaporator surface coating, incorrect cycle timing from PCB, scaled evaporator surface

How to Fix / Troubleshooting

Safety: Unplug the unit before touching the evaporator.

  • Clean evaporator surface: Mineral buildup can cause cubes to stick. Use a soft cloth with a vinegar solution to gently clean the evaporator plate, then rinse and dry.
  • Check ambient temperature: Very low room temperatures can affect release. Ensure the unit is used within the specified ambient range.
  • Inspect refrigerant lines: Look for kinks or crushed tubing near the evaporator that could affect hot gas flow (do not cut or open the system).
  • Control timing: If E20 persists, the control PCB may not be providing correct harvest timing. Replacement of the main control PCB may be required.
  • Technician service: If a sealed system or hot gas bypass issue is suspected, contact a qualified refrigeration technician.
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Repair Difficulty

Professional Required 5/5

Required Part

Evaporator Assembly
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